User’s Manual Model FLXA21 2-Wire Analyzer IM 12A01A02-01E IM 12A01A02-01E 5th Edition
i Introduction u Thank you for purchasing the FLXA21 2-Wire Analyzer. Please read the following respective documents before installing and using the FLXA21. n Notes on Handling User’s Manuals • • • • • • Please hand over the user’s manuals to your end users so that they can keep the user’s manuals on hand for convenient reference. Please read the information thoroughly before using the product.
ii Safety Precautions u n Safety, Protection, and Modification of the Product • In order to protect the system controlled by the product and the product itself and ensure safe operation, observe the safety precautions described in this user’s manual. We assume no liability for safety if users fail to observe these instructions when operating the product. • If this instrument is used in a manner not specified in this user’s manual, the protection provided by this instrument may be impaired.
iii n FLXA21 • The FLXA21 should only be used with equipment that meets the relevant IEC, American, Canadian, and Japanese standards. Yokogawa accepts no responsibility for the misuse of this unit. • Don’t install “general purpose type” instruments in the hazardous area. • The Instrument is packed carefully with shock absorbing materials, nevertheless, the instrument may be damaged or broken if subjected to strong shock, such as if the instrument is dropped. Handle with care.
iv l For Explosion proof (Intrinsically safe type) WARNING Electrostatic charge may cause an explosion hazard. Avoid any actions that cause the generation of electrostatic charge, e.g., rubbing with a dry cloth. Because the enclosure of the FLXA21 2-Wire Analyzer, if it is mounted in an area where the use of category 1 G Zone 0 apparatus is required, it must be installed such, that, even in the event of rare incidents, ignition sources due to friction sparks are excluded.
v Returned goods that have been in contact with process fluids must be decontaminated/ disinfected before shipment. Goods should carry a certificate to this effect, for the health and safety of our employees. Material safety data sheets should also be included for all components of the processes to which the equipment has been exposed. n Copyright and Trademark Notices The copyrights of online manual contained in the CD-ROM are reserved.
Toc-1 Model FLXA21 2-Wire Analyzer IM 12A01A02-01E 5th Edition CONTENTS u Introduction.....................................................................................................i u Safety Precautions........................................................................................ii 1. INTRODUCTION AND GENERAL DESCRIPTION................................... 1-1 2. 1.1 Instrument check...............................................................................................
Toc-2 Temperature settings.......................................................................... 4-4 4.2.3 Temperature compensation................................................................ 4-4 4.2.4 Calibration settings............................................................................. 4-5 4.2.5 Impedance settings............................................................................. 4-8 4.2.6 Concentration...................................................................
Toc-3 7.1 Measurement...................................................................................... 7-3 7.1.2 Configure sensor................................................................................ 7-3 7.1.3 Temperature settings.......................................................................... 7-3 7.1.4 Temperature compensation................................................................ 7-4 7.1.5 Calibration settings......................................................
Toc-4 10. COMMISSIONING OF ISC (Inductive Conductivity)............................ 10-1 10.1 12. 13. 10.1.1 Measurement.................................................................................... 10-3 10.1.2 Configure sensor.............................................................................. 10-3 10.1.3 Temperature settings........................................................................ 10-3 10.1.4 Temperature compensation................................................
Toc-5 13.1 Sensor setup.................................................................................................... 13-2 13.2 Measurement setup......................................................................................... 13-3 16. 13.2.2 Temperature settings........................................................................ 13-3 13.2.3 Temperature compensation.............................................................. 13-3 13.2.4 Salinity compensation....................
Toc-6 16.1 Sensor setup.................................................................................................... 16-3 16.2 Measurement setup......................................................................................... 16-4 Measurement.................................................................................... 16-4 16.2.2 Temperature settings........................................................................ 16-4 16.2.3 Temperature compensation......................
INTRODUCTION AND GENERAL DESCRIPTION 1 This manual describes how to use the FLXA21 with Yokogawa’s or other companies’ sensors. Please read carefully this manual and the instruction manual of the relevant sensor before using this instrument. For the specifications of the FLXA21, please refer to the General Specifications (GS 12A01A0201E) in the attached CD-ROM.
1.1 <1. INTRODUCTION AND GENERAL DESCRIPTION> 1-2 Instrument check Upon delivery, unpack the instrument carefully and inspect it to ensure that it was not damaged during shipment. If damage is found, retain the original packing materials (including the outer box) and then immediately notify the carrier and the relevant Yokogawa sales office.
1-3 <1. INTRODUCTION AND GENERAL DESCRIPTION> l Checking the accessories Make sure the accessories in Table 1.1 are included. Table 1.1 Product Name Cable glands Quantity 3 or 4 sets 3 sets pH analyzer SENCOM pH analyzer Option Jumper Grommet set Grommet Remark In the case of the plastic housing. 4 sets when 2 sensors are used. With a sleeve for grounding cable line. In the case of the stainless steel housing. With rubber plug (1 pcs).
1.2 1-4 <1. INTRODUCTION AND GENERAL DESCRIPTION> Screen operation CAUTION Press the touch screen only with your finger. Do not use a tool with a sharp tip (ex. pencil, ballpoint pen), a thin stick, a tool with a hard tip etc. to avoid scratches on the touch screen. Press the center of the icon or character to avoid wrong operation. The main screen operations are as follows.
1-5 <1. INTRODUCTION AND GENERAL DESCRIPTION> n Main display F E 1 G Tag:FLXA21–PH A D B C J 10.38 HOLD TEXT_ORP1 PH1 Figure 1.4 Go to Infomation (Figure 1.10) WASH TEXT_TEMP1 19 mV K Go to Zoom (Figure 1.8) pH TEXT_PH1 25.0 °C 4mA Go to Home (Figure 1.6) Go to Execute & Setup (Figure 1.11) 20mA H L M Example of main display Main display The Main display appears upon startup when one sensor is connected and the MONITOR display is disabled.
<1. INTRODUCTION AND GENERAL DESCRIPTION> 1-6 n Home display (when two sensors are connected) F B C G Tag:FLXA21–PH 25.0 °C 19 mV pH Tag:FLXA21–PH 24.9 °C 24 mV pH 4mA J PH1 Figure 1.6 10.38 6.35 D E A H K 20mA Example of home display Home display The Home display appears upon startup when two sensors are connected and the MONITOR display is disabled.
1-7 <1. INTRODUCTION AND GENERAL DESCRIPTION> n Trend display D Measurement value (pH) C 1 F pH1 Tag：FLXA21-PH 12.00 9.10pH 8.40 Maximum value on this display Current process value 5.60 Minimum value on this display 2.50 B 12:00 A 12:20 E Time G Figure 1.9 12:40 Maximum Average Minimum Example of trend display Trend display The Trend display appears when the Trend button on the Zoom display is pressed.
1-8 <1. INTRODUCTION AND GENERAL DESCRIPTION> For some errors concerned with setting, a message on the remedy can jump to the relevant setting directly. Fault: mA configuration error Figure 1.10 Problem with mA and Process parameter. Remedy Select a correct ‘Process parameter’ for mA in: Commissioning >> Output setup Example of jumping from remedy to setting If neither a fault is detected nor warning is indicated, “Working properly” is displayed.
1.4 <1. INTRODUCTION AND GENERAL DESCRIPTION> 1-9 Regulatory Compliance 1 Safety: EN61010-1 UL 61010-1 CAN/CSA C22.2 No.61010-1 EMC: EN61326-1 Class A, Table 2 (For use in industrial locations) EN61326-2-3 AS/NZS CISPR11 Korea Electromagnetic Conformity Standard Installation altitude: 2000 m or less Category based on IEC 61010: I (Note 1) Pollution degree based on IEC 61010: 2 (Note 2) Note 1: Installation category, called over-voltage category, specifies impulse withstand voltage.
<1. INTRODUCTION AND GENERAL DESCRIPTION> 1-10 Type of protection Class I, Division 1, Groups A, B, C and D (Intrinsically Safe) Class I, Division 2, Groups A, B, C and D (Nonincendive) Class I, Zone 0, in Hazardous (Classified) Locations (Intrinsically Safe) Class I, Zone 2, Group IIC, in Hazardous (Classified) Locations (Nonincendive) AEx ia IIC For all protection type, T4: for ambient temperature: -20 to 55°C T6: for ambient temperature: -20 to 40°C Atmosphere pressure: 80 kPa (0.
1-11 <1. INTRODUCTION AND GENERAL DESCRIPTION> pH/ORP Sensor module, SC Sensor module and DO Sensor module Input parameters Output parameters Ui, Vmax = 13.92 V Ii, Imax = 50 mA Pi, Pmax = 0.374 W Ci = 40 nF Li = 2.9 mH Sensor input circuit(pH: terminals 11 through 19, SC: terminals 11 though 16, DO: terminals 11 thourgh 18) Uo Vt, Voc = 11.76 V Io, It, Isc = 116.5 mA = 0.342 W Po Co, Ca = 100 nF Lo, La = 1.7mH 1 ISC Sensor module Input parameters Output parameters Ui, Vmax = 13.
<1. INTRODUCTION AND GENERAL DESCRIPTION> 1-12 Electrical data are as follows; Maximum Voltage (Ui) = 30V Maximum Current (Ii) = 100mA Maximum Power (Pi) = 0.75W Internal Capacitance (Ci) = 13F Internal Inductance (Li) = 0mH Note 1: The output current must be limited by a resistor “R” such that Imaxout=Uz/R (linear source). Note 2: Safety barrier certified by a notify body in EU as ATEX should be used. Note 3: When using non isolation barrier, connect (*) to IS earthing system.
<1. INTRODUCTION AND GENERAL DESCRIPTION> 1-13 Control Drawing (CSA type) Intrinsically Safe Group IIC, Zone 0 Class I, Division 1 Non-incendive Class I, Division 2, Groups A, B, C, D Hazardous Location ← → Non Hazardous Location 2 wire analyzer + Measuring module 1 Supply + Sensor 1 Safety Barrier Housing Assembly Refer to Note Supply Measuring module 2 Sensor 2 (Refer to Note 7) Note: The measuring module on this drawing means the sensor module on this General Specifications.
1-14 <1. INTRODUCTION AND GENERAL DESCRIPTION> WARNING Installation and wiring The FLXA21 should only be used with equipment that meets the relevant IEC, American or Canadian standards. Yokogawa accepts no responsibility for the misuse of this unit. WARNING Don’t install “general purpose type” instruments in the hazardous area.
<1. INTRODUCTION AND GENERAL DESCRIPTION> 1-15 WARNING 1 Electrostatic discharge The FLXA21 contains devices that can be damaged by electrostatic discharge. When servicing this equipment, please observe proper procedures to prevent such damage. Replacement components should be shipped in conductive packaging. Repair work should be done at grounded workstations using grounded soldering irons and wrist straps to avoid electrostatic discharge. PH SC ISC DO SENCOM IM 12A01A02-01E 5th Edition : Oct.
2-1 <2. WIRING AND INSTALLATION> 2. WIRING AND INSTALLATION Install the cable glands into the FLXA21 before installing it (see section 2.3.) Upon delivery, the cable glands are not installed.
2.1 <2. WIRING AND INSTALLATION> 2-2 Installation site The FLXA21 is weatherproof and can be installed both inside and outside. It should, however, be installed as close as possible to the sensor to avoid long cable runs between the instrument and sensor. When the pH sensor is used, the cable length including the sensor cable should not exceed 20 meters (65.6 feet). 60 meters when using BA10 extension box and WF10 cable.
2.3 2-3 <2. WIRING AND INSTALLATION> Installing the cable glands The supplied cable glands are for cables with an outside diameter of 6 to 12 mm (0.24 to 0.47 inches). Unused cable entry holes must be sealed with cable glands including the supplied close up plugs. For sensor 1 cable (For sensor 2 cable) For sensor 1 cable (For sensor 2 cable) 2 (A hole is drilled, if specified.) For power supply For power supply For grounding cable Plastic Housing Figure 2.3 Stainless Steel Housing F0202.
2-4 <2. WIRING AND INSTALLATION> CAUTION When installing cable glands, hold cable glands and tighten cable gland nuts to a torque of 6 N•m. If cable glands, not gland nuts, are tightened, O-rings may be come out from the proper positions. l Adapter for conduit work When protecting the cable with a conduit, use an adapter (option codes: /CB4, /CD4, or /CF4). Set the adapter as shown in figure 2.5, instead of using the cable gland as shown in figure 2.4. Unit: mm(inch) Nut Approx. 55(2.2") 49 (1.
2-5 <2. WIRING AND INSTALLATION> CAUTION The FLXA21 is used with a DC power supply. Do not use an alternating current or 100 volt mains power supply. The cable leading to the distributor (power supply) supplies the power to and transmits the output signal from the FLXA21. Use a two conductor shielded cable with a minimum cross sectional area of 1.25 mm2 and an outside diameter of 6 to 12 mm. The cable gland supplied with the instrument is compatible with these diameters.
2-6 <2. WIRING AND INSTALLATION> l Grounding the stainless steel housing Use the terminal outside the converter housing for grounding (Figure 2.7B). Use a ring terminal. When connecting the converter to a distributor, connect the shield of a double-core shielded cable to the terminal on the terminal block in the converter. Do not connect the shield to the ground terminal in the distributor. A: Plastic housing (Internal grounding) Figure 2.7 2.4.
2.5 2-7 <2. WIRING AND INSTALLATION> Sensor wiring The FLXA21 can be used with a wide range of commercially available sensor types, both from Yokogawa and other manufacturers. Terminal screw size is M4, and torque of screw up is 1.2 N•m. Pin terminal, ring terminal and spade terminal can be used. Pin terminal: pin diameter: max. 1.9 mm 2 Ring and spade terminal: width: max. 7.8 mm For details on the sensors, refer to the respective instruction manuals of the sensors.
2-8 <2. WIRING AND INSTALLATION> n Wiring of YOKOGAWA sensors 11 11 12 12 Board Terminals 13 14 15 13 14 15 16 16 17 pH, pH & ORP, rH 11 12 13 16 17 ORP 11 12 13 14 pH Comp.
2-9 <2.
<2. WIRING AND INSTALLATION> 2.5.1 2-10 Wiring the pH/ORP sensor n pH Measurement Conventional pH sensors are connected to the module as follows: FLXA21 11 Temperature 12 Temperature 13 Reference 14 Solution ground 15 Glass (measure) 16 Shield 17 Shield TC REF Liquid PH Earth In addition to the wiring of the sensor, insure that a jumper for low-impedance sensor inputs is installed.
<2. WIRING AND INSTALLATION> 2-11 n ORP Measurement The ORP measurement uses the same sensor input module as the pH measurement. It is not uncommon to measure ORP as process variable and a pH Glass electrode as reference. This is the case with rH measurement and with pH compensated ORP measurement.
2.5.2 2-12 <2. WIRING AND INSTALLATION> Wiring the conductivity (SC) sensor Contacting Conductivity, SC, sensors are connected to the module as follows: 11 + Temp 12 - 13 V14 i- 15 V+ 16 i+ The above diagram shows wiring for 4-electrode conductivity sensors, such as SC42-SP34 large bore series. For 2-electrode conductivity sensors, such as SC42-SP36 small bore series, jumpers must be installed between terminals 13-14 and between terminals 15-16, as shown in the diagram below.
2.5.4 2-13 <2. WIRING AND INSTALLATION> Wiring the dissolved oxygen (DO) sensor The input module for DO measurement is suitable for different types of DO sensors: i. Galvanic sensors like model DO30G ii.
Mounting methods See Figure 2.9. The FLXA21 has various mounting possibilities. • Panel mounting using optional mounting hardware (/PM or /UM) • Wall mounting using optional mounting hardware (/U or /UM) • Pipe mounting using optional mounting hardware (/U or /UM) on a horizontal or vertical pipes (Nominal size: 50A) The universal mounting kit (/UM) contains the pipe and wall mounting hardware (/U) and the panel mounting hardware (/PM). Some can be left unused.
2.7 2-15 <2. WIRING AND INSTALLATION> Operation When all wiring is completed, turn on the power of the instrument. Make sure that the LCD screen turns on. Then, the screen changes to the Quick Setup display. If the instrument is not configured, an error indicator may be displayed, or the measurement values displayed may be incorrect. Check the initial settings and change them to suit your purpose. 2 If you are using the without display unit, refer to “HART communication (TI 12A01A02-60E).
3. 3-1 <3. OPERATION OF pH/ORP> OPERATION OF pH/ORP This chapter describes the screen operations of pH/ORP, the object to be measured. Further details of screen operations can also be found in section 1.2. Tag:FLXA21–PH 10.38 3 pH 25.0 °C Calibration 5.1 ◆pH ◆ORP 5.3 19 mV 4mA PH1 20mA Calibration pH ◆Manual 5.1.1 ◆Automatic5.1.2 ◆Sample 5.1.3 ◆Temperature 5.2 Execute &Setup Execute: Calibration/Wash HOLD Temporary output HOLD Calibration ORP 5.4 Temporary output 5.
3.1 <3. OPERATION OF pH/ORP> 3-2 Change language The screen is set to display English at factory shipment; if you wish to use the FLXA21 in another language, first select a language as described in section 2.7. 3.2 Quick setup The Quick setup screen is used to set up the basic items you want to set up first, such as the date/time and sensor settings. The detailed settings are described in chapter 4, Commissioning.
3-3 <3. OPERATION OF pH/ORP> 3 Sensor setup Quick setup Sensor type Start quick setup? Yes No pH+ORP pH ORP pH+ORP Chanage language mA(output) Process parameter pH1 pH1 Temperature1 ORP1 rH1 pH2 0% value 0.00Temperature2 pH 100% value 14.
3-4 <3. OPERATION OF pH/ORP> n Measurement setup Select a suitable measurement parameter from among those displayed and set it up. Measurement parameter setup can be made only when “pH + ORP” is selected on the Sensor setup screen. For details, see section 4.2.1. n Temperature settings Select a suitable temperature element from among those displayed and set it up. Celsius (ºC) or Fahrenheit (ºF) temperature scale can be selected. For details, see section 4.2.2.
3-5 <3. OPERATION OF pH/ORP> On the Home display, pressing of the 1st sensor (top) or 2nd sensor (bottom) causes the display of the selected sensor to appear on the Main display. of the 2nd or 3rd display item causes the 1st display item to On the Main display, pressing be replaced by the selected item. NOTE Measured values to be displayed in the 1st to 3rd display items depend on the user definition (see section 4.7.1).
3-6 <3. OPERATION OF pH/ORP> In case of trouble, when you contact your nearest Yokogawa service center, please inform us of the module and FLXA21 software revision displayed on the Detail screen and other display information as well as the module productions number indicated on the nameplate attached to the instrument.
<3. OPERATION OF pH/ORP> 3-7 n PH (ORP)’s zero, slope, and sensor, and Impedance l Zero = calibrated sensor offset in mV. Theoretically, the sensor reads 0 mV in a buffer solution of pH 7. The ZERO value indicates the condition of the sensor. The trend of ZERO drift of the sensor is used to predict the lifetime of the sensor. ZERO can also be displayed in pH units and then it represents the pH value where the sensor output is 0 mV at 25ºC.
<3. OPERATION OF pH/ORP> 3-8 If both impedance measurements are disabled (Error setting: Off), the display shows “- - - - (bar)”. If either impedance measurement 1 or 2 is enabled, the display shows both the impedance values. l Impedance 2 Impedance shows the electrical resistance of the reference electrode liquid junction. The liquid junction forms the electrolytic contact between the reference electrode and the measuring electrode, so it must be kept clean and filled with conductive electrolyte.
3-9 <3. OPERATION OF pH/ORP> As shown in Figure 3.8, the date is predicted based on the intersection point of the upper or lower limits and the extrapolated line of the values obtained by the least squares method. Upper limit Value Lower limit Current date Projected maintenance date 3 Day F0310.ai Figure 3.8 The status shows the certainty of the projected maintenance date in terms of the correlation coefficient R. Tables 3.1 and 3.2 show respective display patterns. Table 3.
3-10 <3. OPERATION OF pH/ORP> History information on events are automatically stored on the preset conditions. In addition to this storing, following three messages can be manually stored in the logbook; "Sensor washed by hand", "Module replaced", "Sensor replaced" To store these messages, press and select one of three messages from the Item on the Memorandum screen. Its event date/time will be the time when a message is selected and entered.
3-11 <3. OPERATION OF pH/ORP> NOTE Measurement value (pH) Updating the trend screen setup resets the current trend graph and starts a new one. pH1 10.38pH Tag: FLXA21-PH 12.00 8.40 Max. and min. values on this display Current process value 5.60 Maximum Average Minimum 2.50 12:00 12:20 3 12:40 Time Figure 3.10 Trend screen The 1st display item data on the Main display is shown as a graph.
3.7 <3. OPERATION OF pH/ORP> 3-12 Calibration and Commissioning Allows you to calibrate and configure the instrument. These operations can be protected with a password. For details on the password, refer to section 4.6.3. Execute & Setup Execute: Calibration HOLD Temporary output Setup: Commissioning Change language Start Quick Setup Figure 3.12 Execute & Setup Pressing changes the display to the Execute & Setup screen.
4. 4-1 <4. COMMISSIONING OF pH/ORP> COMMISSIONING OF pH/ORP This chapter describes how to check and change settings from the Commissioning screen. When you move to the Commissioning screen, the output is held. Execute &Setup Execute: Calibration/Wash HOLD Temporary output Setup: Comissioning Change language Start Quick Setup Figure 4.
4-2 <4. COMMISSIONING OF pH/ORP> Table 4.1 Menu Structure and Default Values in “Commissioning” Parameter Sensor setup Measurement setup Sensor type Measurement Temperature setting Temp. compensation Calibration settings Impedance settings Concentration Sensor diag. settings Output setup Ref. sect. Temp. element Compensation Reference temp. Process Temp.
4.1 4-3 <4. COMMISSIONING OF pH/ORP> Sensor setup “Sensor type” setup is determined by the sensor to be connected to the instrument. Select one of the following three sensor types: Only pH is measured. The glass electrode (input 1) is connected to terminal 15 pH: and the reference electrode (input 2) is connected to terminal 13. ORP: Only Redox is measured. The metal electrode (input 1) is connected to terminal 15 and the reference electrode (or glass) (input 2) is connected to terminal 13.
4.2.2 4-4 <4. COMMISSIONING OF pH/ORP> Temperature settings Select the temperature element used for compensation from among Pt1000, Pt100, 3kBalco, 8k55, PTC10k, 6k8, and 500Ω. Select the same type as the temperature element that is actually connected. Celsius (°C) or Fahrenheit (°F) temperature units are available. If the unit is changed, the following values are also recalculated automatically to the new unit: • Manual temp. • Reference temp. • Temp. coefficient • Temp. ranges in the matrix 4.2.
l 4-5 <4. COMMISSIONING OF pH/ORP> Matrix Matrix means a temperature compensation which uses the temperature compensation matrix. The temperature compensation matrix is a table of pH values at various temperatures corresponding to the pH values at the standard temperature. For details, see Appendix 1. When the temperature or the precompensated pH value is out of the range of the temperature compensation matrix, the temperature compensation error (warning) will be issued. This is not a device error.
l <4. COMMISSIONING OF pH/ORP> 4-6 Limits and timing Zero High/Low Set the high and low limits of Zero (aspot). During calibration, it is checked whether the new zero exceeds these high and low limits. Narrowing the band will prevent bad calibration procedures and calibration of bad sensors, which results in higher accuracy. The default values should be adjusted to suit the application and the “users” criterion. Slope High/Low Set the high and low limits of Slope (sensitivity).
4-7 <4. COMMISSIONING OF pH/ORP> l Auto correct (Zero, Slope) This function calculates calibration coefficients from the transition of past calibration data (zero, slope) and compensates pH value using these calibration coefficients after the latest calibration. The default setting is “Disable.” To make the function effective, select “Enable.
4.2.5 4-8 <4. COMMISSIONING OF pH/ORP> Impedance settings This screen is used to set the impedance relating to an input impedance check. Input 1 impedance represents the “glass membrane impedance” of a pH sensor. In case of an ORP sensor, it represents “metal electrode impedance.” Input 2 impedance stands for “reference impedance.” If you select “Input impedance: Low,” the display moves to the Input impedance screen, enabling you to set the high and low limits.
4-9 <4. COMMISSIONING OF pH/ORP> 4.2.7 Sensor diagnostic settings This screen is used to set items relating to sensor diagnostics displayed on the screens invoked by pressing . Gauges are displayed for only parameters that have been enabled in “Sensor diag. settings.” Parameters set to Disable are provided with a bar display. The setting parameters include Input 1 imp., Input 2 imp., Progress time, and Heat cycle. When input impedance is set “High” (section 4.2.5), “FINE” value can be changed.
4-10 <4. COMMISSIONING OF pH/ORP> On the Redundant system, when a sensor (Sensor 1) of the 1st module fails, the output is automatically switched to the output of the 2nd module. After repairing the Sensor 1, manual reset of redundant system is necessary to return to the output of 1st module from the output of the 2nd module. Display Sensor 1 Sensor 2 R(1) R(2) Alive R(1) Repair sensor Dead Alive Dead mA Alive Alive mA Alive Alive mA Sensor 1 is dead.
4-11 <4. COMMISSIONING OF pH/ORP> n Configure Hold On the Configure Hold, settings are performed to hold of the mA output at a preset value. (Refer to the section 5.4.) This is enabled only if “mA” is “Output.” During the Commissioning or the Quick Setup, the mA output is automatically held. The preset value depends on a setting on the “Last or fixed”. The preset value is a value measured just before hold condition. “Last”: “Fixed”: The preset value is a value set in the “Fixed value mA”.
<4. COMMISSIONING OF pH/ORP> Table 4.2 4-12 Error configuration Display item pH too high pH too low Temperature too high Temperature too low ORP too high ORP too low rH too high rH too low Matrix config. error Calib. time exceeded Wash half-time error Impedance 1 too high Impedance 1 too low Impedance 2 too high Impedance 2 too low Description The pH value exceeds 16.00. The pH value is lower than –2.00. Measured process temperature is higher than the maximum limit.
4.5 4-13 <4. COMMISSIONING OF pH/ORP> Logbook configuration In “Logbook configuration,” the user configures information to be saved to a logbook or initializes the logbooks. Logbooks are used to keep an electronic record of events such as error messages, calibrations, and programmed data changes. By referring to this log, users can, for instance, easily determine maintenance or replacement schedules.
4-14 <4. COMMISSIONING OF pH/ORP> If you select “Load factory settings,” the instrument will be set to the default settings at factory shipment. When this item is selected, a screen prompting whether to restart is displayed. If this is no problem, press “Yes.” Then the “Loading …” message appears and blinks and loading is started. When the factory settings have been loaded, the instrument will be restarted. When “Save user settings” is selected, the current settings can be saved as the defaults.
4-15 <4. COMMISSIONING OF pH/ORP> n HART Select this menu when HART communication is made. In the HART setup screen, specify the network address and set up parameters for SV, TV, and FV. (PV is linked with the “process parameter” setting in “Output settings” and cannot be changed here.) l Network address For 1-to-1 communication, leave the default value [0] unchanged. For multi-drop where multiple HART devices are connected on a bus, set addresses in 1 to 15.
4-16 <4. COMMISSIONING OF pH/ORP> l Wash contact Select Disabled or Enabled. When this item is enabled, items for a wash can be set on the Wash settings screen. In the Wash settings screen, set the interval time, wash time, and recovery time and setup of various washes. Interval time: Set the wash interval in hours. Set the wash time in minutes. In a continuous wash, wash time is Wash time/measure time: replaced by measure time. Recovery time: Set the recovery time in minutes.
4-17 <4. COMMISSIONING OF pH/ORP> However, for applications where the pH during wash shows almost the same value as the normal pH, the difference will be approximately zero. In such a case, disable the wash recovery check. An example of such applications is the monitoring of waste water pH. If you select water jet cleaning in such a case, the normal pH as well as the washing time pH will be around pH 7; the difference will be approximately zero, so the recovery time check will not work normally.
4.7.1 4-18 <4. COMMISSIONING OF pH/ORP> Main display (Dual display, Individual display) Display setup Display setup Main display Trend Auto Return Ad.just contrast MONITOR display Figure 4.7 or Dual display Individual display Trend Auto Return Adjust contrast MONITOR display Display setup screens for a single module (left) and two modules (right) l Main display When one module is installed on the instrument, only the Main display is available.
4.7.2 4-19 <4. COMMISSIONING OF pH/ORP> Trend This screen is used to make settings for the Trend Graph Screen. Set the process parameters to be displayed for each trend. They can be set for the 1st to 3rd trends. When all three process parameters are set “Empty”, there is no trend display (no trend button). l X-axis: Timing Select the X-axis timing’s time span on the trend graph display from a list.
4.8 4-20 <4. COMMISSIONING OF pH/ORP> Calculated data setup On this setup, parameters can be set for calculated data. When two modules are installed on the instrument, the calculated data can be set for pH values or ORP values measured by two sensors. Select “Differential” or “Average” on the Calculated data setup screen. Differential: A difference between measurement values measured by a sensor 1 and sensor 2 is an output as a calculated result.
5. 5-1 <5. CALIBRATION OF pH/ORP> CALIBRATION OF pH/ORP Before pH measurement, calibrate the pH sensor with the standard solution. Before ORP measurement, check the electrode as a part of regular maintenance. NOTE A default is “10 min” for “Auto Return”. When maintenance like a calibration that may take much time is performed, “60 min” or “Disable” is recommended to be selected. (Refer to the section 4.7.3.
5.1 <5. CALIBRATION OF pH/ORP> 5-2 pH calibration There are the Manual, Automatic, and Sample modes of pH calibration. 5.1.1 Manual calibration The unit is adjusted to match the value of the buffer standards or a process solution with a known pH value (buffer solution). The user determines the pH value, temperature influence, and stability. Select the calibration type from among [zero/slope], [zero/slope/ITP(3point)], and [zero/slope1,2 (3point)].
5-3 <5. CALIBRATION OF pH/ORP> ( tt - t1 t -t (273.15 + t2)(ITP - pH2) + (1 - 3 1 ) x (273.15 + t1)(ITP - pH1) t2 - t1 2 - t1 (273.15 + t3) 3 pH3cal = ITP - pHn: Tn: ) pH value of n-th buffer solution Temperature of n-th buffer solution (ºC) ITP: ITP value displayed in calibration settings (see section 4.2.4) Assign 7.00 as the ITP value when a specific value is not available or for the first calibration of a sensor. Do not use the 3rd solution whose pH value is within pH3cal ± 1.
5-4 <5. CALIBRATION OF pH/ORP> l zero/slope Select the solution that works with the “buffer solution” selected in calibration settings and perform calibration by following the prompts on the screen. l zero/slope/ITP(3point) Calibration is performed in the sequence of the sequence selection menu (Table 5.1) of the solution that works with the “buffer solution” selected in calibration settings. Perform calibration by following the prompts on the screen.
5.1.3 5-5 <5. CALIBRATION OF pH/ORP> Sample calibration A sample calibration is a single-point calibration for only the zero (asymmetric). It adjusts the recorded reading to a collected sample value. Press [Take Sample] to record a collected sample value in memory. Re-enter the Sample Cal. screen and press [Start calibration] to perform a sample calibration. This updates the recorded data. NOTE When a sensor or an electrode is exchanged or replaced, sensor wellness data should be reset.
5-6 <5. CALIBRATION OF pH/ORP> 5.4 HOLD The FLXA21 has a function to hold the mA output at a preset value (default: “Last”). Use this menu to hold the output. For the settings, see “n Configure Hold” on page 4-11. During commissioning or quick setup, the output is automatically held. Setting “Hold during Calibration/Wash” to “Disabled” deactivates the hold function during calibration or washing. to select Execute: HOLD and then choose Manual Hold ON or Manual Hold OFF.
6-1 <6. OPERATION OF SC (Conductivity)> 6. OPERATION OF SC (Conductivity) This chapter describes the screen operations of SC, the object to be measured. Further details of screen operations can also be found in section 1.2. Tag:FLXA21–SC 10.38 mS/cm 25.0 °C 4mA 6 Conduct1-TC1 Calibration ◆Cell constant(manual) 8.1 ◆Cell constant(automatic)8.2 8.3 ◆Air calibration 8.4 ◆Sample ◆Temperature coefficient 8.5 ◆Temperature calibration 8.
6.1 <6. OPERATION OF SC (Conductivity)> 6-2 Change language The screen is set to display English at factory shipment; if you wish to use the FLXA21 in another language, first select a language as described in section 2.7. 6.2 Quick setup The Quick setup screen is used to set up the basic items you want to set up first, such as the date/time and sensor settings. The detailed settings are described in chapter 8, Commissioning.
6-3 <6. OPERATION OF SC (Conductivity)> 6 Measurement setup Quick setup Measure Conductivity Conductivity Resistitivity Concentration Conduct.+Concenter. Start quick setup? Yes No Chanage language mA(output) Process parameter Conduct1-TC1 Conduct1-TC1 Temperature1 Concent1-TC1 Concent1-TC2 Conduct1-TC2 0% value 0.000 nS/cm Resist1-TC1 100% value 500.
6-4 <6. OPERATION OF SC (Conductivity)> n Configure sensor From among the sensor types displayed on this screen, select an appropriate electrode for the sensor used. The measurement units can also be selected from among “/cm” and “/m”. The cell constant (factory default) is determined by factory calibration made during manufacturing. The cell constant is indicated on the sensor. If a new sensor is used, the cell constant indicated here should be changed.
6-5 <6. OPERATION OF SC (Conductivity)> On the Home display, pressing of the 1st sensor (top) or 2nd sensor (bottom) causes the display of the selected sensor to appear on the Main display. of the 2nd or 3rd display item causes the 1st display item to On the Main display, pressing be replaced by the selected item. NOTE Measured values to be displayed in the 1st to 3rd display items depend on the user definition (see section 7.6.1).
6-6 <6. OPERATION OF SC (Conductivity)> In case of trouble, when you contact your nearest Yokogawa service center, please inform us of the module and FLXA21 software revision displayed on the Detail screen and other display information as well as the module productions number indicated on the nameplate attached to the instrument. mA Sesor wellness: Polarization Cell constant Heat cycle Progress Time 20 12 4 15.
6-7 <6. OPERATION OF SC (Conductivity)> n Contact status This screen is displayed only if the PH201G distributor is used and “PH201G” is selected in communication setup. n c.c. (factory) This parameter displays the cell constant (factory setting). The cell constant (factory setting) is determined by factory calibration made during sensor manufacturing. This value can be set in Commissioning → Measurement setup → Sensor setup. 6 The cell constant is indicated on the sensor or cable label. n c.c.
6-8 <6. OPERATION OF SC (Conductivity)> n Sensor wellness At the Sensor wellness window, the soundness of a module is displayed. A larger number of n in each gauge indicates that the parameter concerned is sound. A gauge is indicated for only those parameters whose sensor wellness setting is “enabled,” while a bar (----) is displayed if the sensor wellness setting is “disabled.” Sensor wellness setup can be made in Commissioning → Measurement setup → Sensor diag. settings. For details, see section 7.
6-9 <6. OPERATION OF SC (Conductivity)> The status shows the certainty of the projected maintenance date in terms of the correlation coefficient R. Tables 6.1 and 6.2 show respective display patterns. Table 6.1 Display pattern of the projected maintenance date Projected date --: -- 0-1 month 1-3 months 3-6 months 6-12 months Over 1 year cannot be predictable due to insufficient data Table 6.2 Status Display pattern of the status (- - - - -) (R < 0.50) 6 (Poor) (Reasonable) (Excellent) (0.
6-10 <6. OPERATION OF SC (Conductivity)> (Fig.6.6) Read Logbook: logbook1-1 logbook1-1 logbook1-2 logbook1-1 2010/02/15 15:15 Power on 1/1 ** Memorandum: Item Sensor washed by hand Sensor washed by hand Enter? Module replaced No Sensor replaced Finish Memorandum: Item Sensor replaced Enter? No No logbook1-1 2010/02/15 17:04 Sensor replaced 2010/02/15 15:15 Power on 1/1 Yes Finish ** When storing message manually. Figure 6.8 6.
<6. OPERATION OF SC (Conductivity)> Measurement value (mS/cm) Conduct1-TC1 10.38mS/cm Tag: FLXA21-SC 12.00 8.40 Max. and min. values on this display Current process value 5.60 Maximum Average Minimum 2.50 12:00 12:20 6-11 12:40 6 Time Figure 6.9 Trend screen The 1st display item data on the Main display is shown as a graph. Touching any point on the display changes the display to the 2nd display item data (and to the 3rd display item data if set) and then returns to the Main display.
6.7 <6. OPERATION OF SC (Conductivity)> 6-12 Calibration and Commissioning Allows you to calibrate and configure the instrument. These operations can be protected with a password. For details on the password, refer to section 7.5.3. Execute & Setup Execute: Calibration HOLD Temporary output Setup: Commissioning Change language Start Quick Setup Figure 6.11 Execute & Setup Pressing changes the display to the Execute & Setup screen.
7. 7-1 <7. COMMISSIONING OF SC (Conductivity)> COMMISSIONING OF SC (Conductivity) This chapter describes how to check and change settings from the Commissioning screen. When you move to the Commissioning screen, the output is held. Execute &Setup Execute: Calibration/Wash HOLD Temporary output Setup: Comissioning Change language Start Quick Setup Figure 7.
7-2 <7. COMMISSIONING OF SC (Conductivity)> Table 7.1 Menu Structure and Default Values in “Commissioning” Parameter Measurement setup 7.1.1 Sensor type Measuring unit Cell constant (factory) Temp. element 7.1.2 Temp. compensation Compensation Reference temp. Method 7.1.4 Calibration settings Limits: 7.1.5 Configure sensor Temperature settings Concentration Sensor diag. settings Output setup Ref. sect. Measurement 7.1.3 Air adjust c.c. Timing: Step Range Stabilization time Calibr.
7.1 7-3 <7. COMMISSIONING OF SC (Conductivity)> Measurement setup This section describes how to set up various parameters relating to measurements. Measurements are performed based on the measurement parameter setup. 7.1.1 Measurement Select a measurement parameter from Conductivity, Resistivity, Concentration, and Conduct. + Concentr. The setting of the measurement parameter changes the menu structure in Error configuration, Display setup, etc. accordingly. 7.1.
7-4 <7. COMMISSIONING OF SC (Conductivity)> 7.1.4 Temperature compensation l Temperature compensation Two methods can be used: Automatic and Manual. Select Automatic when a temperature element is used or Manual when a manually set temperature is used. NOTE When Manual is selected on the Temperature compensation, a process temperature should be set in the “Manual temp.” A temperature shown on the Main display or the Home display is this manually set temperature.
7-5 <7. COMMISSIONING OF SC (Conductivity)> NOTE The temperature compensation is not performed around zero. In this case, a warning may be issued. 7.1.5 Calibration settings The screen flow differs depending on the combination of objects to be measured. 7 l Air adjust limit Generally, air calibration is not required. To avoid the effects of the cable on the measurement of lower conductivities such as pure water, a “zero” calibration with a dry sensor may be done.
7-6 <7. COMMISSIONING OF SC (Conductivity)> l Concentration table Concentration can be calculated by using the temperature compensation matrix or the additional concentration table. • By using the temperature compensation matrix Set the “Additional table” to “Disabled”. The concentration can be obtained from the temperature compensation matrix (based on the relation between the conductivity at the reference temperature and the concentration). Select Temp.
7-7 <7. COMMISSIONING OF SC (Conductivity)> The output of the selected process parameter is shown as a bar on the bottom of the Main display or the Home display. And its parameter symbol (for example, Conduct1-TC1 or DiffCond-TC1) is shown above the bar, too. When a selected process parameter is displayed as a measurement value, the top left number or character is turned to be white number or character on black background (for example, or ). (Refer to the section 1.2.) Table 7.
7-8 <7. COMMISSIONING OF SC (Conductivity)> Display Sensor 1 Sensor 2 R(1) R(2) Alive R(1) Repair sensor Dead Dead Alive Alive mA Alive mA Alive Alive mA Sensor 1 is dead. (automatic) If sensor 1 fails, the output is automatically switched to the sensor-2 value. This display is the example when “Redundant” is selected as a process parameter. mA Redundant system restart (manual) After repairing sensor 1, reset the backup made Even if a fault on the sensor 1 is by the redundant system.
7-9 <7. COMMISSIONING OF SC (Conductivity)> During the Commissioning or the Quick Setup, the mA output is automatically held. The preset value depends on a setting on the “Last or fixed”. The preset value is a value measured just before hold condition. “Last”: “Fixed”: The preset value is a value set in the “Fixed value mA”. When the “Fixed” is selected, set a mA value in the “Fixed value mA”.
7-10 <7. COMMISSIONING OF SC (Conductivity)> NOTE When setting the error limits of “Conductivity too high” and “Conductivity too low,” enter values obtained by dividing the conductivity value to be used as a limit value by the cell constant (given at factory shipment) of the sensor used (conductivity / cell constant). In resistivity measurements, set a value (resistivity x cell constant). NOTE The temperature compensation is not performed around zero. In this case, a warning may be issued.
7.5 7-11 <7. COMMISSIONING OF SC (Conductivity)> Advanced setup Advanced setup is used to set functions relating to matters other than measurements such as the selection of settings, tag setting, password setting for protecting calibration and commissioning operations, date setting, and communication setting. (“Factory setup” is for service engineers only; there is no item to be set by the user.) 7.5.
7.5.3 7-12 <7. COMMISSIONING OF SC (Conductivity)> Passwords Calibration and commissioning operations can be separately protected by each password. To protect execute operations, enter a password in Execute’s input field. To protect commissioning operations, enter a password in Commissioning’s input field. By default, both input fields are empty. When a password input field is empty, operation is not password-protected. A password can contain up to 8 characters.
7-13 <7. COMMISSIONING OF SC (Conductivity)> For more information on HART communication, see the Technical Information (TI 12A01A0260E) in the attached CD-ROM. n PH201G Select this menu if the PH201G distributor is connected to the instrument. In the PH201G setup screen, make settings for “Hold contact,” and “Fail contact.” l Hold contact 7 Select Disabled or Enabled. When this item is enabled, the output will be held according to the setting of “Hold type” on the Hold setup screen.
7-14 <7. COMMISSIONING OF SC (Conductivity)> l Main display When one module is installed on the instrument, only the Main display is available. Three measurement values can be set to display on the Main display as a primary value (1st line), a second value (2nd line) and a third value (3rd line) respectively. On the “Additional text”, a text of up to 12 alphanumeric characters can be assigned to each measurement value.
7.6.3 7-15 <7. COMMISSIONING OF SC (Conductivity)> Auto Return When no operation is performed for the time set in “Auto Return”, the display returns to the Monitor display (or to the Main display when the MONITOR display is disabled) and the analyzer returns to a normal measuring mode. (When the Trend display is selected, the Auto Return doesn’t work.) Select the time from among Disable, 10 min, and 60 min. When the Auto Return function is not used, select “Disable.” NOTE A default is “10 min”.
Pressing <7. COMMISSIONING OF SC (Conductivity)> 7-16 returns the display to the original calculated data display. A calculated data can be set as a process parameter on the “mA (Output)” setup screen. (Section 7.2.) IM 12A01A02-01E 5th Edition : Oct.
8. 8-1 <8. CALIBRATION OF SC (Conductivity)> CALIBRATION OF SC (Conductivity) The cell constant of a conductivity meter does not change during operation, as long as it remains undamaged, and clean. Therefore, it is vital that in any calibration check, the first step should be to clean the sensor, or at least to check its cleanliness. After cleaning, ensure that the sensor is carefully rinsed in distilled water to remove all traces of the cleaning medium.
8-2 <8. CALIBRATION OF SC (Conductivity)> NOTE When a sensor is exchanged or replaced, sensor wellness data should be reset. When a sensor is replaced, the replacement can be recorded manually into a logbook. (Refer to the figure 6.9.) 8.1 Cell constant (manual) The intention of this calibration routine is to fine-tune a sensor for which only the nominal cell constant is known, or to recalibrate a sensor that has been changed (or damaged) during operation.
8.4 8-3 <8. CALIBRATION OF SC (Conductivity)> Sample With the sensor in situ, a sample can be taken for laboratory analysis. Sample calibration records the time and reading, and holds these in memory until the analysis has been completed. The laboratory data can then be entered regardless of the current process value, without the need for calculations.
8-4 <8. CALIBRATION OF SC (Conductivity)> 8.7 HOLD The FLXA21 has a function to hold the mA output at a preset value (default: “Last”). Use this menu to hold the output. For the settings, see “n Configure Hold” on page 7-8. During commissioning or quick setup, the output is automatically held. Setting “Hold during Calibration” to “Disabled” deactivates the hold function during calibration. to select Execute: HOLD and then choose Manual Hold ON or Manual Hold OFF.
9. 9-1 <9. OPERATION OF ISC (Induvtive Conductivity)> OPERATION OF ISC (Induvtive Conductivity) This chapter describes the screen operations of ISC, the object to be measured. Further details of screen operations can also be found in section 1.2. 9 Tag:FLXA21–ISC 10.38 25.0 °C 4mA mS/cm Conduct1-TC1 Calibration c.c.(manual) ◆Cell constant(manual) 11.1 ◆Cell constant(automatic)11.2 11.3 ◆Air calibration 11.4 ◆Sample ◆Temperature coefficient 11.5 ◆Temperature calibration 11.
9.1 <9. OPERATION OF ISC (Induvtive Conductivity)> 9-2 Change language The screen is set to display English at factory shipment; if you wish to use the FLXA21 in another language, first select a language as described in section 2.7. 9.2 Quick setup The Quick setup screen is used to set up the basic items you want to set up first, such as the date/time and sensor settings. The detailed settings are described in chapter 11, Commissioning.
9-3 <9. OPERATION OF ISC (Induvtive Conductivity)> 9 Measurement setup Quick setup Start quick setup? Yes No mA(output) Measure Conductivity Conductivity Concentration Conduct.+Concenter. Process parameter Conduct1-TC1 Conduct1-TC1 Temperature1 Concent1-TC1 Conduct1-TC2 Concent1-TC2 0% value 0.000 nS/cm 100% value 1.
9-4 <9. OPERATION OF ISC (Induvtive Conductivity)> n Configure sensor The measurement units can also be selected from among “/cm” and “/m”. The cell constant (factory default) is determined by factory calibration made during manufacturing. The cell constant is indicated on the sensor. If a new sensor is used, the cell constant indicated here should be changed. When this value is changed, the real cell constant will also be changed. For details, see section 10.1.2.
<9. OPERATION OF ISC (Induvtive Conductivity)> 10.38 9-5 Monitor display mS/cm 9 Tag:FLXA21–ISC 10.00 1st display item 2nd display item 3rd display item 25.0 °C Conduct1-TC1 Tag:FLXA21–ISC 25.0 °C 19.00 mS/cm 4mA 9.4 20mA Tag:FLXA21–ISC 19.00 25.0 °C mS/cm 10.00 mS/cm Conduct1-TC1 Figure 9.4 Main display 19.00 mS/cm 4mA 10.
9-6 <9. OPERATION OF ISC (Induvtive Conductivity)> mA Sesor wellness: Cell constant Heat cycle Progress Time 20 12 4 15.00 Reset wellness data New sensor? –––– –––– Reset welness data Next Next * “Yes” resets sensor wellness data. Yes No 2010/02/15 16:04:07 Last calibrated at -------- -----Calibration due at -------- -----Projected Calibration >12months (no meaning) HOLD FAIL Next Next c.c.(factory) 1.880/cm c.c.(adjusted) 1.880/cm Temp.comp.1 NaCl Temp.comp.2 None Sensor Ohm 500.
<9. OPERATION OF ISC (Induvtive Conductivity)> 9-7 n c.c. (factory) This parameter displays the cell constant (factory setting). The cell constant (factory setting) is determined by factory calibration made during sensor manufacturing. This value can be set in Commissioning → Measurement setup → Sensor setup. The cell constant is indicated on the sensor or cable label. 9 n c.c. (adjusted) This parameter displays the cell constant (adjusted).
9-8 <9. OPERATION OF ISC (Induvtive Conductivity)> n Last calibrated = date on which the last sensor calibration was performed. The displayed value of the Zero is the result of this calibration. The displayed value of Slope was calibrated on this date only if the last calibration was a 2-point calibration. n Calibration due = the date when the calibration must be done next according to the settings of the calibration interval.
9-9 <9. OPERATION OF ISC (Induvtive Conductivity)> n Read logbook The FLXA21 has two types of logbook per sensor to store history information on events, such as changed settings and calibrations. By selecting one of the logbooks that you wish to check, you can retrieve and check this information. Storage of history information on each event in a logbook or which logbook to use for storage can be set up on the Configure logbook screen. For details, see section 10.4.
9-10 <9. OPERATION OF ISC (Induvtive Conductivity)> The screen displays the trend of up to 41 averages of the measurement for each time interval. The FLXA21 samples the measurements every second. The trending graphic also shows the maximum and minimum measured values in that interval. For example, if the time scale is set to 4 hours, then the trend is shown for 4 hours prior to the actual measurement. Each point on the trend line represents the average over 4×60×60/41 = 351 measurements (seconds).
9.6 9-11 <9. OPERATION OF ISC (Induvtive Conductivity)> Instrument status screen In the field of the Main display, the (Warning) or (Fault) sign appears according to the instrument status. Upon pressing the displayed button, detailed information of the relevant status appears. See “n Information button 9.7 ” on page 1-7. 9 Calibration and Commissioning Allows you to calibrate and configure the instrument. These operations can be protected with a password.
10. 10-1 <10. COMMISSIONING OF ISC (Inductive Conductivity)> COMMISSIONING OF ISC (Inductive Conductivity) This chapter describes how to check and change settings from the Commissioning screen. When you move to the Commissioning screen, the output is held. Execute &Setup Execute: Calibration HOLD Setup: Comissioning Change language Start Quick Setup Figure 10.
10-2 <10. COMMISSIONING OF ISC (Inductive Conductivity)> Table 10.1 Menu Structure and Default Values in “Commissioning” Parameter Measurement setup Measurement Configure sensor Temperature settings Temp. compensation Measuring unit Cell constant (factory) Temp. element Compensation Reference temp. Method Calibration settings Limits: Concentration Sensor diag. settings Output setup Ref. sect. Air adjust c.c. Timing: Step Range Stabilization time Calib.
10.1.1 10-3 <10. COMMISSIONING OF ISC (Inductive Conductivity)> Measurement Select a measurement parameter from Conductivity, Concentration, and Conduct. + Concentr. The setting of the measurement parameter changes the menu structure in Error configuration, Display setup, etc. accordingly. 10.1.2 Configure sensor This section describes how to configure the sensor to be connected. l Measuring unit 10 Either /cm or /m can be chosen here. The process values will be expressed in S/cm or S/m.
10-4 <10. COMMISSIONING OF ISC (Inductive Conductivity)> l Process temperature compensation Select a temperature compensation method from among None, TC, NaCl, and Matrix. “None” does not perform the temperature compensation. l TC This method uses the linear compensation function. For how to calculate a temperature coefficient of the compensation function, see “l Configure calculated temperature coefficient (TC).” on page App.3-1.
10-5 <10. COMMISSIONING OF ISC (Inductive Conductivity)> NOTE Perform a zero check for air calibration while the temperature compensation is set to NaCl. l c.c. high High limit of the cell constant expressed as a % of the nominal value. During calibration this value is used to check if the calibrated cell constant remains within reasonable limits. l c.c. low Low limit of the cell constant expressed as a % of the nominal value.
10-6 <10. COMMISSIONING OF ISC (Inductive Conductivity)> l Unit for table Select the concentration display units from among %, ppt, ppm, and ppb. Changing the unit will not result in a re-calculation of the table. Reenter values in the additional concentration table. 10.1.7 Sensor diagnostic settings This screen is used to set items relating to sensor diagnostics displayed on the screens invoked by pressing . Gauges are displayed for only parameters that have been enabled in “Sensor diag.
10-7 <10. COMMISSIONING OF ISC (Inductive Conductivity)> Burn Select the designated output in case of a fault from among Off, Low, and High. See “10.3 Error configuration” to set the output. Off: Output depends on the measured value. Low: Output is fixed to 3.6 mA (when None is set in Communication setup) Output is fixed to 3.9 mA (when HART or PH201G is selected in Communication setup) High: Output is fixed to 22.0 mA.
10-8 <10. COMMISSIONING OF ISC (Inductive Conductivity)> Table 10.3 Error configuration Display item Conductivity too high (or Concentration) Conductivity too low (or Concentration) Temperature too high Temperature too low Calibr. time exceeded Configuration error: 1st comp. matrix 2nd comp. matrix Concentration table Description Default Conductivity or resistivity is lower than the minimum limit. Warn. Conductivity or resistivity is higher than the maximum limit. Warn.
10.5 10-9 <10. COMMISSIONING OF ISC (Inductive Conductivity)> Advanced setup Advanced setup is used to set functions relating to matters other than measurements such as the selection of settings, tag setting, password setting for protecting calibration and commissioning operations, date setting, and communication setting. (“Factory setup” is for service engineers only; there is no item to be set by the user.) 10.5.
10.5.3 <10. COMMISSIONING OF ISC (Inductive Conductivity)> 10-10 Passwords Calibration and commissioning operations can be separately protected by each password. To protect execute operations, enter a password in Execute’s input field. To protect commissioning operations, enter a password in Commissioning’s input field. By default, both input fields are empty. When a password input field is empty, operation is not password-protected. A password can contain up to 8 characters.
10-11 <10. COMMISSIONING OF ISC (Inductive Conductivity)> n PH201G Select this menu if the PH201G distributor is connected to the instrument. In the PH201G setup screen, make settings for “Hold contact,” and “Fail contact.” l Hold contact Select Disabled or Enabled. When this item is enabled, the output will be held according to the setting of “Hold type” on the Hold setup screen. 10 l Fail contact Select a status from among “Fail + Warn,” “Fail only,” and “Disabled.
10-12 <10. COMMISSIONING OF ISC (Inductive Conductivity)> l X-axis: Timing Select the X-axis timing’s time span on the trend graph display from a list. l Y-axis: Limits Set the Y-axis high and low limits on the trend graph display on a Trend screen basis. NOTE Updating the trend display setup resets the current trend graph and starts a new one. 10.6.
11. 11-1 <11. CALIBRATION OF ISC (Inductive Conductivity)> CALIBRATION OF ISC (Inductive Conductivity) Inductive conductivity meters must be calibrated after being installed in a measurement location or moved to a different location. Inductive conductivity meters do not generally need to be calibrated repetitively if they have been calibrated once before the start of use. If the cell is severely contaminated or has been subject to abrasion (possibly during cleaning), calibration may be necessary.
<11. CALIBRATION OF ISC (Inductive Conductivity)> 11-2 NOTE The standard instrument to be used in calibration with a process solution should always be accurate. Yokogawa recommends that the Model SC72 pocket conductivity meter be used for this purpose. Where temperature compensation 1 (SC1) and temperature compensation 2 (SC2) have been configured, the configured temperature compensation is effective even during calibration.
Correction factor (x nominal C.C.) <11. CALIBRATION OF ISC (Inductive Conductivity)> 1.30 1.25 1.20 1.15 Non-conductive piping 1.10 D 1.05 1.00 0.95 Conductive piping 0.90 0 Figure 11.3 11.
11-4 <11. CALIBRATION OF ISC (Inductive Conductivity)> NOTE The temperature compensation should be set to NaCl when confirming zero during air calibration. NOTE The temperature compensation is not performed around zero. In this case, a warning may be issued. Not being wet, the sensor measures the conductivity of air, which is close to zero.
11-5 <11. CALIBRATION OF ISC (Inductive Conductivity)> 11.6 Temperature calibration In order to make the most accurate measurements, it is important to have a precise temperature measurement. This affects the display of temperature, and the output signal (when used). More important, however, is the temperature compensation, and calibration accuracy. The temperature of the sensor system should be measured independently with a high precision thermometer.
12. 12-1 <12. OPERATION OF DO (Dissolved Oxygen)> OPERATION OF DO (Dissolved Oxygen) This chapter describes the screen operations of DO, the object to be measured. Further details of screen operations can also be found in section 1.2. Tag:FLXA21–DO 10.38 12 mg/L 25.0 °C Calibration 4mA Oxygen1 20mA Execute & Setup Execute: Calibration HOLD Temporary output Setup: Commissioning Change language Start Quick Setup Comissioning 13.1 ◆Sensor setup ◆Measuremet setup 13.2 13.
12.1 <12. OPERATION OF DO (Dissolved Oxygen)> 12-2 Change language The screen is set to display English at factory shipment; if you wish to use the FLXA21 in another language, first select a language as described in section 2.7. 12.2 Quick setup The Quick setup screen is used to set up the basic items you want to set up first, such as the date/time and sensor settings. The detailed settings are described in chapter 14, Commissioning.
12-3 <12. OPERATION OF DO (Dissolved Oxygen)> 12 Sensor setup Quick setup Sensor type Start quick setup? Yes No Galvanic Galvanic Polarographic Chanage language mA(output) Process parameter Oxygen1 Oxygen1 Temperature1 Oxygen2 Temperature2 0% value 0.00Calculated mg/L 100% value 20.00 mg/L Redundant Finish Next Next Format Date Time Date/Time Finish Configure sensor YYYY/MM/DD YYYY/MM/DD MM/DD/YYYY 2010/03/03 DD/MM/YYYY Monitor display Unit mg/L mg/L sensor sensitivity ppm 0.
12-4 <12. OPERATION OF DO (Dissolved Oxygen)> n Configure sensor On this screen, select the units and set the sensor sensitivity. If Polarograph is selected for the sensor type, the polarograph application voltage can also be set. For details, see section 13.2.1. n Temperature settings Select a suitable temperature element from among those displayed and set it up. Celsius (ºC) or Fahrenheit (ºF) temperature scale can be selected. For details, see section 13.2.2.
12-5 <12. OPERATION OF DO (Dissolved Oxygen)> On the Main display, pressing be replaced by the selected item. of the 2nd or 3rd display item causes the 1st display item to NOTE Measured values to be displayed in the 1st to 3rd display items depend on the user definition (see section 13.7.1). In the default condition, the 1st display item is oxygen, the 2nd display item is temperature, and the 3rd display item is empty. 12 When the MONITOR display is enabled (see section 13.7.
mA 12-6 <12. OPERATION OF DO (Dissolved Oxygen)> Sesor wellness: Slope Heat cycle Progress Time 20 12 4 15.00 Reset wellness data New sensor? –––– –––– Reset welness data Next Next * “Yes” resets sensor wellness data. Yes No 2010/02/15 16:04:07 Last calibrated at -------- -----Calibration due at -------- ------ HOLD FAIL WASH Next Next DO module(sensor1): Module Pdn No. S12345 Software Revision 1.10 Zero Current 0.00 µA Slope 100.0 % Sensor Current 0.
12-7 <12. OPERATION OF DO (Dissolved Oxygen)> n Zero Current = The offset value of a calibrated sensor. This is the offset of the sensor and sensor circuit in the zero oxygen condition. n Slope This parameter indicates the sensitivity of the sensor after calibration. It is indicated as a percentage of the reference sensitivity based on the selection of the sensor or that has been entered. 12 n Sensor Current = The raw output of the sensor before it is calibrated and temperature compensated.
12-8 <12. OPERATION OF DO (Dissolved Oxygen)> n DO module (sensor) With this screen, you can check the module productions number and software revision of the installed module. n HOUSING ASSY With this screen, you can check the module productions number, software revision, and HART device revision of the housing assembly. n Read logbook The FLXA21 has two types of logbook per sensor to store history information on events, such as changed settings and calibrations.
12.5 12-9 <12. OPERATION OF DO (Dissolved Oxygen)> Trend graphics Pressing on the Zoom display changes the display to a graphical mode in which the average measured value is shown on a time scale. The “Live” value is also digitally displayed in a text box. The time scale (X-axis) and the primary value scale (Y-axis) are set in the “DISPLAY SETUP” menu (Section 13.7.2). The screen displays the trend of up to 41 averages of the measurement for each time interval.
<12. OPERATION OF DO (Dissolved Oxygen)> mA Tag: FLXA21-DO 12.00 20 12-10 Oxygen1 10.38mg/L 8.40 12 5.60 4 15.00 2.50 12:00 Next 12:20 Tag: FLXA21-DO 12.00 12:40 Temperature1 25.0°C 8.40 5.60 2.50 12:00 Figure 12.9 12.6 12:20 12:40 Trend graphics Instrument status screen In the field of the Main display, the (Warning) or (Fault) sign appears according to the instrument status. Upon pressing the displayed button, detailed information of the relevant status appears.
<12. OPERATION OF DO (Dissolved Oxygen)> Browse through the menu items by pressing 12-11 until you find the desired menu and then press to enter that menu. It is also possible to enter a desired menu by pressing the ¯ symbol beside the menu item. For calibration (HOLD, Temporary output), read chapter 14, and for commissioning, read chapter 13. 12 DO IM 12A01A02-01E 5th Edition : Oct.
13. 13-1 <13. COMMISSIONING OF DO (Dissolved Oxygen)> COMMISSIONING OF DO (Dissolved Oxygen) This chapter describes how to check and change settings from the Commissioning screen. When you move to the Commissioning screen, the output is held. Execute &Setup Execute: Calibration/Wash HOLD Temporary output Setup: Comissioning Change language Start Quick Setup Figure 13.
13-2 <13. COMMISSIONING OF DO (Dissolved Oxygen)> Table 13.1 Menu Structure and Default Values in “Commissioning Parameter Sensor setup Sensor type Measurement setup Configure sensor Temperature settings Output setup Ref. sect. 13.1 Unit Sensor sensitivity Polarization Voltage Temp. element 13.2.1 13.2.2 Temp. compensation 13.2.3 Salinity compensation 13.2.4 Pressure comp. (Measure) 13.2.5 Calibration settings 13.2.6 Sensor diag. settings 13.2.7 mA 13.
13-3 <13. COMMISSIONING OF DO (Dissolved Oxygen)> 13.2 Measurement setup In this section, set up various parameters relating to measurements. Measurements are performed based on the measurement parameter setup. If “Polarographic” is selected for “Sensor type” in the Sensor setup screen, the polarographic application voltage can be set. 13.2.1 Sensor setup Select a unit for sensors from mg/L, ppm, ppb, and %SAT. Select a value for sensor sensitivity from 0.45 μA/ppm (50 µm), 0.
13.2.6 13-4 <13. COMMISSIONING OF DO (Dissolved Oxygen)> Calibration settings In “Calibration settings,” set the high and low limits of Zero/Slope and set up parameters relating to stabilization performed during calibration. l Limits and timing Zero High/Low Set the high and low limits of Zero. During calibration, it is checked whether the new zero exceeds these high and low limits.
13-5 <13. COMMISSIONING OF DO (Dissolved Oxygen)> 13.2.7 Sensor diag. settings This screen is used to set items relating to sensor diagnostics displayed on the screens invoked by pressing . Gauges are displayed for only parameters that have been enabled in “Sensor diag. settings.” Parameters set to Disable are provided with a bar display. The setting parameters include Progress time and Heat cycle.
13-6 <13. COMMISSIONING OF DO (Dissolved Oxygen)> R(1) Display Sensor 1 Sensor 2 R(2) Alive R(1) Repair sensor Dead Dead Alive Alive mA Alive mA Alive Alive mA Sensor 1 is dead. (automatic) If sensor 1 fails, the output is automatically switched to the sensor-2 value. This display is the example when “Redundant” is selected as a process parameter.
13-7 <13. COMMISSIONING OF DO (Dissolved Oxygen)> Damping time This is the time taken for a response to a step input change to reach 90% of the final value (attenuation time). Set this time in sec. l Simulate When this function is selected, an output of the instrument will be a fixed current value set in % of the output span. The output span range is -2.5% to 112.5% (3.6 mA to 22.0 mA). When “Simulate” is selected, regardless of hold setting, the output is always simulated value.
13-8 <13. COMMISSIONING OF DO (Dissolved Oxygen)> Table 13.4 Error configuration Display item DO too high DO too low Temperature too high Temperature too low Sensor membrande Calib. time exceeded Description Input is over 50 μA (galvanic) or 1200 nA (polarographic). Input is below −0.05 μA (galvanic) or −1.2 nA (polarographic). Measured process temperature is higher than the maximum limit. Measured process temperature is lower than the minimum limit. Sensor membrane is damaged.
13.6 13-9 <13. COMMISSIONING OF DO (Dissolved Oxygen)> Advanced setup Advanced setup is used to set functions relating to matters other than measurements such as the selection of settings, tag setting, password setting for protecting calibration and commissioning operations, date setting, and communication setting. (“Factory setup” is for service engineers only; there is no item to be set by the user.) 13.6.
13.6.3 <13. COMMISSIONING OF DO (Dissolved Oxygen)> 13-10 Passwords Calibration and commissioning operations can be separately protected by each password. To protect execute operations, enter a password in Execute’s input field. To protect commissioning operations, enter a password in Commissioning’s input field. By default, both input fields are empty. When a password input field is empty, operation is not password-protected. A password can contain up to 8 characters.
13-11 <13. COMMISSIONING OF DO (Dissolved Oxygen)> If blank is selected for a parameter, items below that parameter must all be set to blank. If an item is blank, those below it cannot be set to a status other than blank. For more information on HART communication, see the Technical Information (TI 12A01A0260E) in the attached CD-ROM. n PH201G Select this menu if the PH201G distributor is connected to the instrument.
13-12 <13. COMMISSIONING OF DO (Dissolved Oxygen)> When a continuous wash is disabled Tint Tint Tw Tw Tr Tr Tint: Interval time Tw: Wash time Tr: Recovery time When a continuous wash is enabled Tint Tw Tw’ Tint Tr Tw Tw’ Tr Tint: Tw: Tw’: Tr: Interval time Measure time Wash time Recovery time F050605_2.ai Figure 13.3 13.6.6 Factory setup For “Factory setup,” there is no item to be set by the user. NOTE This menu is for service engineers only. This section is protected by a password.
13-13 <13. COMMISSIONING OF DO (Dissolved Oxygen)> Three measurement values can be set to display on the Main display as a primary value (1st line), a second value (2nd line) and a third value (3rd line) respectively. On the “Additional text”, a text of up to 12 alphanumeric characters can be assigned to each measurement value. Additional texts are displayed on the Main display, and are useful for identifying measurements.
13.7.3 13-14 <13. COMMISSIONING OF DO (Dissolved Oxygen)> Auto Return When no operation is performed for the time set in “Auto Return”, the display returns to the Monitor display (or to the Main display when the MONITOR display is disabled) and the analyzer returns to a normal measuring mode. (When the Trend display is selected, the Auto Return doesn’t work.) Select the time from among Disable, 10 min, and 60 min. When the Auto Return function is not used, select “Disable.
14. 14-1 <14. CALIBRATION OF DO (Dissolved Oxygen)> CALIBRATION OF DO (Dissolved Oxygen) Calibrate dissolved oxygen sensors after installing or replacing them, cleaning the membrane, or replacing the electrolyte solution. Air, water, and manual calibrations are available. Air calibration is the most common and easiest method. Water calibration is more accurate. Manual calibration uses manually analyzed sample water and adjusts the sensor to the value. NOTE A default is “10 min” for “Auto Return”.
14.1 14-2 <14. CALIBRATION OF DO (Dissolved Oxygen)> Air calibration Span calibration in the ambient atmosphere is the most common and easiest method. Although setting the Zero Calibration to “Enabled” allows 2-point calibration of Zero (0%) and Span (100%), only span calibration is generally performed. For zero calibration, see the next section. Set the sensor in the maintenance mode. Wash off any stain on the membrane and use a soft tissue to wipe off any remaining water from the membrane.
14.3 14-3 <14. CALIBRATION OF DO (Dissolved Oxygen)> Manual slope calibration Calibrate the sensitivity of the sensor with a solution of known oxygen concentration. First, analyze the oxygen concentration of a sample solution and then calibrate the sensor sensitivity to adjust to this value. From the actual measurement of salinity and temperature, obtain the dissolved oxygen concentration by referring to Table 1 in Appendix 4 and enter it.
14-4 <14. CALIBRATION OF DO (Dissolved Oxygen)> 14.5 HOLD The FLXA21 has a function to hold the mA output at a preset value (default: “Last”). Use this menu to hold the output. For the settings, see “n Configure Hold” on page 13-7. During commissioning or quick setup, the output is automatically held. Setting “Hold during Calibration/Wash” to “Disabled” deactivates the hold function during calibration or washing. to select Execute: HOLD and then choose Manual Hold ON or Manual Hold OFF.
15. 15-1 <15. OPERATION OF SENCOM pH/ORP> OPERATION OF SENCOM pH/ORP This chapter describes the screen operations of SENCOM pH/ORP, the object to be measured. Further details of screen operations can also be found in section 1.2. Tag:SENCOM 10.38 15 pH 25.0 °C Calibration 17.1 ◆pH ◆ORP 17.3 ◆Temperature 17.2 19 mV 4mA PH1 20mA Calibration pH ◆Manual 17.1.1 ◆Automatic17.1.2 ◆Sample 17.1.
15.1 <15. OPERATION OF SENCOM pH/ORP> 15-2 Change language The screen is set to display English at factory shipment; if you wish to use the FLXA21 in another language, first select a language as described in section 2.7. 15.2 Quick setup The Quick setup screen is used to set up the basic items you want to set up first, such as the date/time and sensor settings. The detailed settings are described in chapter 16, Commissioning.
15-3 <15. OPERATION OF SENCOM pH/ORP> 15 Sensor setup Quick setup Sensor type Start quick setup? Yes No pH+ORP pH ORP pH+ORP mA(output) Process parameter pH1 pH1 Temperature1 ORP1 rH1 0% value 100% value Chanage language Finish Next Next *1 Format Date Time Date/Time YYYY/MM/DD YYYY/MM/DD MM/DD/YYYY 2010/03/03 DD/MM/YYYY Finish Measurement setup Measurement 17:04:07 Next 0.00 pH 14.00pH Monitor display pH+ORP pH ORP pH+ORP pH+rH rH Next Next Next Temperature settings Temp.
15-4 <15. OPERATION OF SENCOM pH/ORP> n Measurement setup Select a suitable measurement parameter from among those displayed and set it up. Measurement parameter setup can be made only when “pH + ORP” is selected on the Sensor setup screen. For details, see section 16.2.1. n Temperature settings In the case of temperature sensors, the temperature parameter is automatically set when connection is made. Celsius (ºC) or Fahrenheit (ºF) temperature scale can be selected. For details, see section 16.2.2.
<15. OPERATION OF SENCOM pH/ORP> 10.38 15-5 Monitor display mS/cm 15 Tag:SENCOM 10.00 1st display item 2nd display item 3rd display item Tag:SENCOM 25.0 °C 19.00 mV 4mA 15.4 pH1 20mA Tag:SENCOM 19.00 mV 25.0 °C 10.00 pH pH1 Figure 15.4 Main display 19.00 mV 4mA 10.00 pH pH 25.
mA 15-6 <15. OPERATION OF SENCOM pH/ORP> Sesor wellness: Zero Slope Input 1 imp. Input 2 imp. Heat cycle Progress Time Reset welness data Next 20 12 4 15.00 Next Reset wellness data New sensor? “Yes” resets sensor wellness data. –––– –––– –––– –––– Yes No * SENCOM sensor status1: Max temp.exposed 35.0°C High pH total time 50 h. Low pH total time 27 h.
<15. OPERATION OF SENCOM pH/ORP> 15-7 n PH (ORP)’s zero, slope, and sensor, and Impedance l Zero = calibrated sensor offset in mV. Theoretically, the sensor reads 0 mV in a buffer solution of pH 7. The ZERO value indicates the condition of the sensor. The trend of ZERO drift of the sensor is used to predict the lifetime of the sensor. ZERO can also be displayed in pH units and then it represents the pH value where the sensor output is 0 mV at 25ºC.
<15. OPERATION OF SENCOM pH/ORP> 15-8 l Impedance 2 Impedance shows the electrical resistance of the reference electrode liquid junction. The liquid junction forms the electrolytic contact between the reference electrode and the measuring electrode, so it must be kept clean and filled with conductive electrolyte. Otherwise the measurement will suffer from instability, drift and measuring errors. The electrical impedance is one of the most important.
15-9 <15. OPERATION OF SENCOM pH/ORP> Upper limit Value Lower limit 15 Current date Projected maintenance date Day F0310.ai Figure 15.7 The status shows the certainty of the projected maintenance date in terms of the correlation coefficient R. Tables 15.1 and 15.2 show respective display patterns. Table 15.
15-10 <15. OPERATION OF SENCOM pH/ORP> Temperature (°C) a User-defined sterilization temperature b c User-defined sterilization time Time (min) Figure 15.8 F1510.ai Sterilization a: This event is not counted because the duration does not reach the prescribed sterilization time. b: This event is counted because the duration exceeds the prescribed sterilization time. c: This event is counted because the duration exceeds the prescribed sterilization time.
15-11 <15. OPERATION OF SENCOM pH/ORP> n Read logbook The FLXA21 has three types of logbook per sensor to store history information regarding the setting changes and calibration. By selecting a desired logbook, you can retrieve and check the information. The Configure logbook screen is used to set whether to store history information of each event and which logbook to use for storage. The SENCOM logbook cannot be designated. For details, see Section 16.5.
15.5 15-12 <15. OPERATION OF SENCOM pH/ORP> Trend graphics Pressing on the Zoom display changes the display to a graphical mode in which the average measured value is shown on a time scale. The “Live” value is also digitally displayed in a text box. The time scale (X-axis) and the primary value scale (Y-axis) are set in the “DISPLAY SETUP” menu (Section 16.7.2). The screen displays the trend of up to 41 averages of the measurement for each time interval.
<15. OPERATION OF SENCOM pH/ORP> mA pH1 10.38pH Tag: SENCOM 12.00 20 15-13 8.40 15 12 5.60 4 15.00 2.50 12:00 Next 12:20 12:40 Temperature1 25.0°C Tag: SENCOM 12.00 8.40 5.60 2.50 12:00 Figure 15.11 15.6 12:20 12:40 Trend graphics Instrument status screen In the field of the Main display, the (Warning) or (Fault) sign appears according to the instrument status. Upon pressing the displayed button, detailed information of the relevant status appears. See “n Information button 15.
15-14 <15. OPERATION OF SENCOM pH/ORP> Browse through the menu items by pressing until you find the desired menu and then press to enter that menu. It is also possible to enter a desired menu by pressing the ¯ symbol beside the menu item. For calibration (HOLD), read chapter 17, and for commissioning, read chapter 16. IM 12A01A02-01E 5th Edition : Oct.
16. 16-1 <16. COMMISSIONING OF SENCOM pH/ORP> COMMISSIONING OF SENCOM pH/ORP This chapter describes how to check and change settings from the Commissioning screen. When you move to the Commissioning screen, the output is held. Execute &Setup Execute: Calibration/Wash HOLD Setup: Comissioning Change language Start Quick Setup Figure 16.
16-2 <16. COMMISSIONING OF SENCOM pH/ORP> Table 16.1 Menu Structure and Default Values in “Commissioning” Parameter Sensor setup Measurement setup Output setup Error configuration Logbook configuration Advanced setup Ref. sect. Sensor type Safe sensor disconnection Measurement Temp. element Temperature setting Temp. compensation Compensation Reference temp. Process Temp.
16.1 16-3 <16. COMMISSIONING OF SENCOM pH/ORP> Sensor setup “Sensor type” setup is determined by the sensor to be connected to the instrument. Select one of the following three sensor types: Only pH is measured. pH: ORP: Only ORP is measured. Use this setting for the ORP measurement on the basis of a glass electrode. For the measurement on the basis of a reference electrode, select pH+ORP and then select ORP in [Measurement]. pH + ORP: Both pH and ORP are measured simultaneously.
16-4 <16. COMMISSIONING OF SENCOM pH/ORP> Make sure that “Enable” is selected before disconnecting the sensor. Until the removal, a bar (----) is displayed for the measurement value, and the error message “SENCOM sensor is not connected” appears on the display. Upon connecting the sensor again, it automatically starts measurement and the Safe sensor disconnection turns to “Disable.” NOTE Disconnect the SENCOM sensor after setting the Safe sensor disconnection to “Enable”.
16-5 <16. COMMISSIONING OF SENCOM pH/ORP> n Temperature compensation This compensation of pH value is performed on the Nernst equation. Two methods can be used: Automatic and Manual. Select Automatic when a temperature element is used, or select Manual when a manually set temperature is used. NOTE When Manual is selected on the Temperature compensation, a process temperature should be set in the “Manual temp.” A temperature shown on the Main display is this manually set temperature.
l 16-6 <16. COMMISSIONING OF SENCOM pH/ORP> NEN6411 This algorithm takes into account the dissociation of water in strong acid and strong alkaline solutions. It is particularly useful for pH measurement of boiler feed water. 16.2.4 Calibration settings The screen flow differs depending on the combination of objects to be measured. Calibration settings for a pH converter involve slope (sensitivity), zero (aspot), and ITP (isothermal point). Figure 16.
<16. COMMISSIONING OF SENCOM pH/ORP> 16-7 Step Range Set the range over which the stability of a measured value is checked. If variations of a measured value over the stabilization time are within this setpoint, the measured value is judged to have stabilized. Stabilization time This is the time over which the stability of a pH value is monitored during calibration.
a: Actual change b: Zero and slope calculated from the calibration data c: Zero and slope calculated from the calibration data and shifted using the latest calibration data d: Data from calibration d Zero, Slope 16-8 <16. COMMISSIONING OF SENCOM pH/ORP> a b c Calibration Time Figure 16.3 Auto correct n ORP settings l Limits and timing Zero High/Low Zero (aspot) high and low limits. During calibration, it is checked whether the new zero exceeds these high and low limits.
16.2.5 16-9 <16. COMMISSIONING OF SENCOM pH/ORP> Impedance settings This screen is used to set the impedance relating to an input impedance check. “High” or “Low” is automatically set according to the connected SENCOM sensor. You cannot select the setting. In the case of “Low”, high and low limits can be set. For FU20F sensors, Impedance 1 is “High” and Impedance 2 is “Low”. Input 1 impedance represents the “glass membrane impedance” of a pH sensor.
<16. COMMISSIONING OF SENCOM pH/ORP> 16-10 l Define SENCOM status Set the parameters for analyzing the SENCOM sensor. They are displayed on the detail screen. The parameters are Sterilized temp., Sterilized time, High temp.1, High temp.2, Low pH value, and High pH value. 16.3 Output setup The general procedure is to first define the function of the output, Output or Simulate. Then, set the process parameters associated with the output. On the Output, an output of measured value is selected.
16-11 <16. COMMISSIONING OF SENCOM pH/ORP> n Configure Hold On the Configure Hold, settings are performed to hold of the mA output at a preset value. (Refer to the section 17.4.) This is enabled only if “mA” is “Output.” During the Commissioning or the Quick Setup, the mA output is automatically held. The preset value depends on a setting on the “Last or fixed”. The preset value is a value measured just before hold condition. “Last”: “Fixed”: The preset value is a value set in the “Fixed value mA”.
<16. COMMISSIONING OF SENCOM pH/ORP> Table 16.3 16-12 Error configuration Display item pH too high pH too low Temperature too high Temperature too low ORP too high ORP too low rH too high rH too low Matrix config. error Calib. time exceeded Wash half-time error Impedance 1 too high Impedance 1 too low Impedance 2 too high Impedance 2 too low SENCOM changed Description The pH value exceeds 16.00. The pH value is lower than –2.00. Measured process temperature is higher than the maximum limit.
16-13 <16. COMMISSIONING OF SENCOM pH/ORP> In “Logbook configuration,” the user can select “Off,” “1-1,” or “1-2” for each item of interest to be logged. The SENCOM logbook cannot be specified. This can be done for items displayed on the Settings logbook 1/3 to 3/3 screens. Assigning 1-1 or 1-2 to each item allows information to be organized and logged in a logbook. NOTE Some events such as power-on are saved into the logbook “1-1”. This logbook may be full earlier.
<16. COMMISSIONING OF SENCOM pH/ORP> 16-14 When “Save user settings” is selected, the current settings can be saved as the defaults. When this item is selected, the user settings will start to be saved immediately. After saving the parameters, press function. or to change the display because this save doesn’t have restart If “Load user settings” is selected, the settings saved as user settings can be set as the defaults.
16-15 <16. COMMISSIONING OF SENCOM pH/ORP> n HART Select this menu when HART communication is made. In the HART setup screen, specify the network address and set up parameters for SV, TV, and FV. (PV is linked with the “process parameter” setting in “Output settings” and cannot be changed here.) l Network address For 1-to-1 communication, leave the default value [0] unchanged. For multi-drop where multiple HART devices are connected on a bus, set addresses in 1 to 15.
16-16 <16. COMMISSIONING OF SENCOM pH/ORP> Wash time/measure time: Set the wash time in minutes. In a continuous wash, wash time is replaced by measure time. Recovery time: Set the recovery time in minutes. Manual wash: Select “Disabled” or “Enabled.” When this item is enabled, a wash cycle can be activated manually. On the Calibration/Wash screen, press the “Start manual wash cycle” to perform a manual wash. Imp2 wash: Select “Disabled” or “Enabled.
16-17 <16. COMMISSIONING OF SENCOM pH/ORP> tI : Wash Period Good Electrode 1/2∆pH Bad Electrode pH ∆pH 1/3tR tW : Wash Time 16 tR : Recovery Time Time tI : Wash Period tW : Wash Time tR : Recovery Time F050605_3.ai Figure 16.5 16.6.6 Factory setup For “Factory setup,” there is no item to be set by the user. NOTE This menu is for service engineers only. This section is protected by a password.
16.7.2 16-18 <16. COMMISSIONING OF SENCOM pH/ORP> Trend This screen is used to make settings for the Trend Graph Screen. Set the process parameters to be displayed for each trend. They can be set for the 1st to 3rd trends. When all three process parameters are set “Empty”, there is no trend display (no trend button). l X-axis: Timing Select the X-axis timing’s time span on the trend graph display from a list.
17. 17-1 <17. CALIBRATION OF SENCOM pH/ORP> CALIBRATION OF SENCOM pH/ORP The FLXA21 checks the status of sensors including the connection. While an error is issued, calibration cannot be performed. NOTE Do not disconnect the sensor during calibration. Before pH measurement, calibrate the pH sensor with the standard solution. Before ORP measurement, check the electrode as a part of regular maintenance. 17 NOTE A default is “10 min” for “Auto Return”.
17.1 <17. CALIBRATION OF SENCOM pH/ORP> 17-2 pH calibration There are the Manual, Automatic, and Sample modes of pH calibration. 17.1.1 Manual calibration The unit is adjusted to match the value of the buffer standards or a process solution with a known pH value (buffer solution). The user determines the pH value, temperature influence, and stability. Select the calibration type from among [zero/slope], [zero/slope/ITP(3point)], and [zero/slope1,2 (3point)].
<17. CALIBRATION OF SENCOM pH/ORP> 17-3 ( tt - t1 t -t (273.15 + t2)(ITP - pH2) + (1 - 3 1 ) x (273.15 + t1)(ITP - pH1) t2 - t1 2 - t1 (273.15 + t3) 3 pH3cal = ITP - pHn: Tn: ) pH value of n-th buffer solution Temperature of n-th buffer solution (ºC) ITP: ITP value displayed in calibration settings (see section 16.2.4) Assign 7.00 as the ITP value when a specific value is not available or for the first calibration of a sensor.
17-4 <17. CALIBRATION OF SENCOM pH/ORP> l zero/slope Select the solution that works with the “buffer solution” selected in calibration settings and perform calibration by following the prompts on the screen. l zero/slope/ITP(3point) Calibration is performed in the sequence of the sequence selection menu (Table 17.1) of the solution that works with the “buffer solution” selected in calibration settings. Perform calibration by following the prompts on the screen.
17.1.3 17-5 <17. CALIBRATION OF SENCOM pH/ORP> Sample calibration A sample calibration is a single-point calibration for only the zero (asymmetric). It adjusts the recorded reading to a collected sample value. Press [Take Sample] to record a collected sample value in memory. Re-enter the Sample Cal. screen and press [Start calibration] to perform a sample calibration. This updates the recorded data. NOTE When a sensor or an electrode is exchanged or replaced, sensor wellness data should be reset.
17-6 <17. CALIBRATION OF SENCOM pH/ORP> 17.4 HOLD The FLXA21 has a function to hold the mA output at a preset value (default: “Last”). Use this menu to hold the output. For the settings, see “n Configure Hold” on page 16-11. During commissioning or quick setup, the output is automatically held. Setting “Hold during Calibration/Wash” to “Disabled” deactivates the hold function during calibration or washing. to select Execute: HOLD and then choose Manual Hold ON or Manual Hold OFF.
18. 18-1 <18. MAINTENANCE> MAINTENANCE n Periodic maintenance The FLXA21 requires very little periodic maintenance, except to make sure the front window is kept clean in order to permit a clear view of the display and allow proper operation of the touchscreen. If the window becomes soiled, clean it using a soft damp cloth or soft tissue. To deal with more stubborn stains, a neutral detergent may be used.
<19. TROUBLESHOOTING> 19. 19-1 TROUBLESHOOTING When a or indicator is displayed on the Main display, detailed error information can be given by pressing this indicator-button. See “n Information button ” on page 1-7. For setting of error items, refer to the Error configuration of the section 4.4, 7.3, 10.3, 13.4, or 16.4. For each error item, Warning or Fault will be indicated. Except these error items set on the Error configuration, some errors will be indicated.
<19. TROUBLESHOOTING> 19-2 n Replacement of Modules Only authorized person of Yokogawa is allowed to replace modules. Be sure to keep the replacement procedure below. CAUTION Turn off the power supply to the analyzer before replacement of modules. Lock Figure 19.3 Unlock Locking the module Do not hold the upper fine part when pulling out the module. First, unlock the module by releasing the lock mechanism on the left and right of the module.
<19. TROUBLESHOOTING> 19-3 l Checking nameplates of safety marking In case of Intrinsically safe type or type ”n” or non-incendive model, confirm the name plate on the housing assembly and the sensor module. CAUTION Intrinsically safe type or type-n or non-incendive housing assembly /sensor module are certified independently. So they must be combined appropriately.
<19. TROUBLESHOOTING> Bottom Side Top Side *3 *1 *5 *2 *1 *2: *3: *4: *5: *6: 19-4 *6 *4 This marking conforms to Intrinsically safe type of IECEx. This marking conforms to Intrinsically safe type of ATEX. This marking conforms to Intrinsically safe type of FM. This marking conforms to Intrinsically safe type of CSA. This marking conforms to non-incendive type of FM. This marking conforms to non-incendive type of CSA. Figure 19.6 Example: Nameplates of sensor module assembly.
App.1-1 Appendix 1 For pH/ORP n Buffer tables The following tables show the details of the buffer solutions selectable in Calibration settings of pH (Section 4.2.4) (unit: pH). Table 1 NIST (IEC 60746-2)/DIN 19266 0°C 5°C 10°C 1.668 1.670 1.68 pH 4.01 pH 4.003 3.999 3.998 6.87 pH 6.984 6.951 6.923 9.18 pH 9.464 9.395 9.332 15°C 20°C 25°C 30°C 35°C 38°C 40°C 45°C 50°C 55°C 60°C 70°C 80°C 90°C 95°C 1.672 3.999 6.900 9.276 1.675 4.002 6.881 9.225 1.679 4.008 6.865 9.180 1.
App.1-2 n Matrix temperature compensation Table 5 shows the defaults for the matrix temperature compensation selectable in Temperature compensation (Section 4.2.3). Table 5 Defaults for the matrix temperature compensation (Reference temperature (Tref.): 25.0°C) Temp. range Tref. Tmin. (T1) T2 T3 T4 Tmax. (T5) (25.0°C) 5.0°C 25.0°C 45.0°C 65.0°C 85.0°C Solution 1 (Min.) 6.40 pH 6.42 pH 6.40 pH 6.34 pH 6.23 pH 6.11 pH Solution 2 Solution 3 Solution 4 7.00 pH 7.38 pH 7.
App.1-3 n Checking ORP sensor electrodes The normal functionality of the ORP sensor electrode is determined by measuring the ORP value of the solution with a known ORP value, and by checking if the value is within the tolerable range. To check the ORP sensor before regular operation, follow the procedure below. The electrode is checked in measurement mode. l Solution for checking Use solutions with a known ORP value, such as quinhydrone, ferrous, and other solutions.
App.1-4 600 Oxidation-reduction potential (mV) Ferrous solution 500 Tolerable range 400 Quinhydrone solution 300 Tolerable range 200 100 0 0 10 20 30 40 50 Temperature (°C) Figure 1 Oxidation-reduction Potential Given by Checking Solution IM 12A01A02-01E 5th Edition : Oct.
App.2-1 Appendix 2 For SC (Conductivity) n Temperature compensation The conductivity of a solution is very dependent on temperature. Typically for every 1°C change in temperature the solution conductivity will change by approximately 2%. The effect of temperature varies from one solution to another and is determined by several factors like solution composition, concentration and temperature range.
App.2-2 A. Calculation of temperature coefficient factor (With known conductivity at reference temperature). Kt - Kref α= T - Tref α T Kt Tref Kref X 100 K ref = Temperature compensation factor in %/°C = Measured temperature in °C = Conductivity at T = Reference temperature = Conductivity at Tref B.
App.2-3 Calculate the temperature coefficient of a liquid from the following data. Conductivity 124.5 µS/cm at a liquid temperature of 18.0 °C and a conductivity 147.6 µS/cm at a liquid temperature of 31.0 °C. Substituting the data in the above formula gives the following result. α= 147.6 - 124.5 124.5x(31.0 - 25) - 147.6x(18.0 - 25) x 100= 1.298 %/°C Set the temperature coefficient in the FLXA21 converter.
App.2-4 Table A Ammonia 0..50ppb (Conductivity unit: µS/cm) Solutions (Conc.) Temp.ranges Tmin. 0 ˚C 2. 10 ˚C 3. 20 ˚C 4. 30 ˚C 5. 40 ˚C 6. 50 ˚C 7. 60 ˚C 8. 70 ˚C 9. 80 ˚C Tmax. 90 ˚C Tref. 25.0 ˚C Solut. Min. 0 ppb 0.0116 0.0230 0.0419 0.0710 0.114 0.173 0.251 0.350 0.471 0.611 0.0565 Solution 2 1 ppb 0.0173 0.0284 0.0466 0.0749 0.117 0.176 0.254 0.353 0.475 0.617 0.0608 Solution 3 2 ppb 0.0229 0.037 0.0512 0.0788 0.120 0.178 0.256 0.356 0.479 0.623 0.
App.2-5 Table D Sulfunic acid 0..27% (Conductivity unit: S/cm) Solutions Solut. Solu- Solu- Solu- Solu- Solu- Solution 2 tion 3 tion 4 tion 5 tion 6 tion 7 (Conc.) Min. 0% 5% 8% 12 % 14 % 17 % 20 % Temp.ranges Tmin. -1.11 ˚C 0 0.1496 0.2330 0.3275 0.3695 0.4225 0.4640 2. 10 ˚C 0 0.1813 0.3845 0.4030 0.4355 0.5210 0.5725 3. 21.1 ˚C 0 0.2102 0.3330 0.4740 0.5335 0.6145 0.6805 0 0.2351 0.3740 0.5360 0.6070 0.7030 0.7810 4. 32.2 ˚C 0 0.2574 0.4130 0.5945 0.6735 0.7835 0.
App.2-6 Table G NaOH 0..15% (Conductivity unit: S/cm) Solutions Solut. (Conc.) Min. 0% Temp.ranges Tmin. 0 ˚C 0 2. 10 ˚C 0 3. 18 ˚C 0 0 4. 25 ˚C 0 5. 30 ˚C 6. 40 ˚C 0 0 7. 50 ˚C 8. 60 ˚C 0 9. 80 ˚C 0 0 Tmax. 100 ˚C Tref. 25.0 ˚C 0 Solution 2 1% 0.035 0.042 0.047 0.052 0.056 0.063 0.070 0.080 0.100 0.119 0.052 Solution 3 3% 0.087 0.109 0.125 0.142 0.153 0.179 0.201 0.223 0.270 0.315 0.142 Solution 4 4% 0.113 0.140 0.163 0.183 0.200 0.233 0.265 0.293 0.350 0.407 0.
App.2-7 Table J HCl 0..18% (Conductivity unit: S/cm) Solutions Solut. Solu- Solu- Solu- Solu- Solu- Solution 2 tion 3 tion 4 tion 5 tion 6 tion 7 (Conc.) Min. 0 % 3.65 % 5.48 % 7.3 % 9.12 % 11 % 12.8 % Temp.ranges Tmin. -10 ˚C 0 0.174 0.226 0.277 0.329 0.362 0.390 2. 0 ˚C 0 0.212 0.294 0.364 0.421 0.464 0.489 3. 10 ˚C 0 0.262 0.362 0.445 0.512 0.566 0.603 0 0.284 0.3948 0.481 0.554 0.61 0.653 4. 15 ˚C 0 0.312 0.431 0.526 0.600 0.658 0.706 5. 20 ˚C 6. 25 ˚C 0 0.332 0.
App.2-8 Table M HNO3 35..80% (Conductivity unit: S/cm) Solutions (Conc.) Temp.ranges Tmin. -16 ˚C 2. 0 ˚C 3. 10 ˚C 4. 18 ˚C 5. 20 ˚C 6. 25 ˚C 7. 30 ˚C 8. 40 ˚C 9. 50 ˚C Tmax. 60 ˚C Tref. 25.0 ˚C Solut. Solu- Solu- Solu- Solu- SoluMin. tion 2 tion 3 tion 4 tion 5 tion 6 35 % 37.2 % 43.3 % 49.6 % 55.8 % 62 % 0.412 0.400 0.368 0.334 0.288 0.254 0.576 0.5554 0.507 0.456 0.404 0.352 0.678 0.666 0.614 0.555 0.493 0.438 0.770 0.754 0.700 0.634 0.565 0.506 0.786 0.776 0.
App.2-9 n Temperature compensation error The temperature compensation error (alarm) is issued in any of the following cases. l TC The error is issued when: (measured temperature – reference temperature) < –90/compensation coefficient The default of the temperature compensation coefficient is 2.10%/°C. For example, when the reference temperature is 25°C, the temperature compensation coefficient is 2.10%/°C and the measured temperature is lower than –17.
App.2-10 Conductivity (µS/cm, 25°C) 7000 KCI NaCI CaCI2 6000 MgCI2 Na2SO4 5000 4000 MgSO4 3000 2000 1000 0 1000 2000 3000 4000 5000 Concentration (mg/L) Figure 2 Relations of concentration and conductivity n Calibration solutions for conductivity The calibration (cell constant) of a sensor does not change unless the sensor is damaged. It can also appear to change because of coating of the electrodes, or partial blockage.
App.2-11 FLXA21 is programmed with the following table of conductivity of Potassium Chloride (KCl) solutions at 25°C. This is used in the Automatic Cell Constant setting calibration feature. (See chapter 9 on calibration) The table is derived from the Standards laid down in “International Recommendation No. 56 of the Organisation Internationale de Métrologie Legale”. Table 4 KCl values at 25 °C Standard solution 1.000 M KCl 0.100 M KCl 0.010 M KCl 0.005 M KCl 0.
App.2-12 The USP<645> limit value is a non-temperature-compensated conductivity. When a measuring conductivity needs to be shown on the main or home display as a non-temperature-compensated conductivity, set the temperature compensation on “None”. (Refer to the section 7.1.4.) Conductivity (µS/cm) 3.5 3.0 USP limit 2.5 USP safety margin (user programmable) 2.0 1.5 1.0 0.5 0.
App.3-1 Appendix 3 For ISC (Inductive Conductivity) n Temperature compensation The conductivity of a solution is very dependent on temperature. Typically for every 1°C change in temperature the solution conductivity will change by approximately 2%. The effect of temperature varies from one solution to another and is determined by several factors like solution composition, concentration and temperature range.
App.3-2 A. Calculation of temperature coefficient factor (With known conductivity at reference temperature). Kt - Kref α= T - Tref α T Kt Tref Kref X 100 K ref = Temperature compensation factor in %/°C = Measured temperature in °C = Conductivity at T = Reference temperature = Conductivity at Tref B.
App.3-3 Calculate the temperature coefficient of a liquid from the following data. Conductivity 124.5 µS/cm at a liquid temperature of 18.0 °C and a conductivity 147.6 µS/cm at a liquid temperature of 31.0 °C. Substituting the data in the above formula gives the following result. α= 147.6 - 124.5 124.5x(31.0 - 25) - 147.6x(18.0 - 25) x 100= 1.298 %/°C Set the temperature coefficient in the FLXA21 converter.
App.3-4 Table A Sulfunic acid 1..5% (Conductivity unit: S/cm) Solutions (Conc.) Temp.ranges Tmin. 0 ˚C 2. 10 ˚C 3. 20 ˚C 4. 30 ˚C 5. 40 ˚C 6. 50 ˚C 7. 62.5 ˚C 8. 75 ˚C 9. 87.5 ˚C Tmax. 100 ˚C Tref. 25.0 ˚C Solut. Min. 1% 0.0338 0.0391 0.0444 0.0491 0.0533 0.0575 0.0606 0.0637 0.0659 0.0680 0.0470 Solution 2 1.5 % 0.0487 0.0571 0.0655 0.0727 0.0789 0.0580 0.0899 0.0949 0.0988 0.103 0.
App.3-5 Table D Sulfunic acid 93..100% (Conductivity unit: S/cm) Solutions (Conc.) Temp.ranges Tmin. 10 ˚C 2. 20 ˚C 3. 25 ˚C 4. 30 ˚C 5. 40 ˚C 6. 50 ˚C 7. 60 ˚C 8. 70 ˚C 9. 80 ˚C Tmax. 90 ˚C Tref. 25.0 ˚C Solut. Min. 93 % 0.0860 0.1153 0.1320 0.1490 0.1897 0.2323 0.2787 0.3284 0.3826 0.4390 0.1320 Solution 2 94 % 0.0835 0.1143 0.1310 0.1467 0.1860 0.2275 0.2715 0.3196 0.3714 0.4250 0.1310 Solution 3 95 % 0.0800 01110 0.1260 0.1414 0.1787 0.2190 0.
App.3-6 Table G HCl 24..44% (Conductivity unit: S/cm) Solutions (Conc.) Temp.ranges Tmin. -20 ˚C 2. 0 ˚C 3. 10 ˚C 4. 15 ˚C 5. 20 ˚C 6. 25 ˚C 7. 30 ˚C 8. 45 ˚C 9. 55 ˚C Tmax. 65 ˚C Tref. 25.0 ˚C Solut. Solu- Solu- Solu- Solu- Solu- Solu- Solu- Solu- Solut. Min. tion 2 tion 3 tion 4 tion 5 tion 6 tion 7 tion 8 tion 9 Max. 23.7 % 25.6 % 29.2 % 31 % 32.8 % 34.7 % 36.5 % 38.3 % 40.1 % 43.8 % 0.354 0.351 0.342 0.335 0.328 0.319 0.312 0.303 0.295 0.277 0.560 0.
App.3-7 Table J HNO3 35..80% (Conductivity unit: S/cm) Solutions (Conc.) Temp.ranges Tmin. -16 ˚C 2. 0 ˚C 3. 10 ˚C 4. 18 ˚C 5. 20 ˚C 6. 25 ˚C 7. 30 ˚C 8. 40 ˚C 9. 50 ˚C Tmax. 60 ˚C Tref. 25.0 ˚C Solut. Solu- Solu- Solu- Solu- SoluMin. tion 2 tion 3 tion 4 tion 5 tion 6 35 % 37.2 % 43.3 % 49.6 % 55.8 % 62 % 0.412 0.400 0.368 0.334 0.288 0.254 0.576 0.5554 0.507 0.456 0.404 0.352 0.678 0.666 0.614 0.555 0.493 0.438 0.770 0.754 0.700 0.634 0.565 0.506 0.
App.3-8 Table M NaOH 25..50% (Conductivity unit: S/cm) Solutions (Conc.) Temp.ranges Tmin. 0 ˚C 2. 10 ˚C 3. 18 ˚C 4. 25 ˚C 5. 30 ˚C 6. 40 ˚C 7. 50 ˚C 8. 60 ˚C 9. 75 ˚C Tmax. 80 ˚C Tref. 25.0 ˚C Solut. Min. 25 % 0.140 0.212 0.270 0.352 0.411 0.528 0.645 0.796 1.023 1.098 0.352 Solution 2 28 % 0.100 0.174 0.232 0.313 0.372 0.489 0.605 0.766 1.007 1.086 0.313 Solution 3 30 % 0.075 0.148 0.207 0.289 0.347 0.463 0.580 0.746 0.995 1.078 0.
App.3-9 n Temperature compensation error The temperature compensation error (alarm) is issued in any of the following cases. l TC The error is issued when: (measured temperature – reference temperature) < –90/compensation coefficient The default of the temperature compensation coefficient is 2.10%/°C. For example, when the reference temperature is 25°C, the temperature compensation coefficient is 2.10%/°C and the measured temperature is lower than –17.
App.3-10 FLXA21 is programmed with the following table of conductivity of Potassium Chloride (KCl) solutions at 25°C. This is used in the Automatic Cell Constant setting calibration feature. (See section 11.2) The table is derived from the Standards laid down in “International Recommendation No. 56 of the Organisation Internationale de Métrologie Legale”. Table 4 KCl values at 25 °C mol/l 0.001 0.002 0.005 0.01 0.1 1.0 mg KCl/kg of solution 74.66 149.
App.3-11 The conductance (1/R) is proportional to the specific conductivity and a constant factor that is determined by the geometry of the sensor (length divided by surface area of the hole in the toroid) and the installation of the sensor. There are 2 toroids mounted in the “dough nut” shaped sensor. The liquid also flows through the second toroid and therefore the liquid turn can be considered as a primary wind ing of the second ring transformer.
App.4-1 Appendix 4 For DO (Dissolved Oxygen) n Dissolved oxygen Dissolved oxygen means the oxygen dissolved in water. Its concentration is expressed as the amount of oxygen per unit volume of water (mg/L or ppm). The solubility of oxygen in water varies depending on water temperature, salinity, atmospheric pressure, etc. The sensors used in FLXA21 use the membrane electrode method to measure the dissolved oxygen.
App.4-2 Table 2 Solubility of oxygen in water as a funstion of temperature and pressure Pressure [kPa (atm) *1] Temperature 111.5 (1.1) 101.3 (1.0) 91.2 (0.9) 81.1 (0.8) 70.9 (0.7) (°C) Solubillity (mg/l) 0.0 16.09 13.14 11.69 10.21 8.74 5.0 14.06 11.48 10.20 8.91 7.62 10.0 12.43 10.15 9.00 7.86 6.71 15.0 11.10 9.05 8.03 7.01 5.98 20.0 10.02 8.14 7.23 6.30 5.37 25.0 9.12 7.40 6.56 5.70 4.84 30.0 8.35 6.76 5.99 5.19 4.60 35.0 7.69 6.22 5.47 4.75 4.01 40.0 7.10 5.
FLXA21 2-Wire Analyzer Customer Maintenance Parts List 5 1 2 6 7 8 Item 1 3 10 9 11 4 12 13 14 15 Part No.
i Revision Record Manual Title : Model FLXA21 2-Wire Analyzer Manual No. : IM 12A01A02-01E Oct. 2013/5th Edition HOUSING ASSY Software Revision 2.10 Addition of MONITOR display, and other corrections Sep. 2013/4th Edition Product Career S2, HOUSING ASSY Software Revision 2.
Supplement Model FLXA21 2-Wire Analyzer User’s Manual Thank you for selecting our FLXA21 2-Wire Analyzer. Though User’s Manual, IM 12A01A02-01E 5th Edition, is provided with the product, an addition to the manual has been made. Please attach a copy of this supplement to the manual and follow the instructions below when using the instrument. Note n Instructions related to NEPSI type is added. Model FLXA21 2-Wire analyzer has been certified as explosion proof equipment by NEPSI.
l Figure 19.5 and Figure 19.6 (pages 19-3 and 19-4) Articles are revised as following. -P (Plastic) -S (Stainless steel) *1 *2 *3 *4 *1 *2 *3 *4 *5 *6 *7 *5 -U (Stainless steel + urethane coating) -E (Stainless steel + epoxy coating) *6 *1 *2 *3 *4 *5 *7 *1 This marking conforms to Intrinsically safe type of IECEx. *2: This marking conforms to Intrinsically safe type of ATEX. *3: This marking conforms to Intrinsically safe type of NEPSI.
Bottom Side Top Side *4 *1 *6 *2 *7 *5 *3 *1 This marking conforms to Intrinsically safe type of IECEx. *2: This marking conforms to Intrinsically safe type of ATEX. *3: This marking conforms to Intrinsically safe type of NEPSI. *4: This marking conforms to Intrinsically safe type of FM. *5: This marking conforms to Intrinsically safe type of CSA. *6: This marking conforms to non-incendive type of FM. *7: This marking conforms to non-incendive type of CSA. Figure 19.
