User’s Manual Model EJA110A, EJA120A and EJA130A Differential Pressure Transmitters IM 01C21B01-01E IM 01C21B01-01E Yokogawa Electric Corporation 11th Edition
CONTENTS CONTENTS 1. INTRODUCTION ............................................................................................ 1-1 Regarding This Manual ................................................................................. 1-1 1.1 For Safe Use of Product ........................................................................ 1-1 1.2 Warranty ................................................................................................ 1-2 1.3 ATEX Documentation .............................
CONTENTS 6.3.2 External Indicator Connection ...................................................... 6-1 6.3.3 BRAIN TERMINAL BT200 Connection ........................................ 6-1 6.3.4 Check Meter Connection .............................................................. 6-2 6.4 Wiring .................................................................................................. 6-2 6.4.1 Loop Configuration .......................................................................
CONTENTS (18) Test Output Setup ..................................................................... 8-16 (19) User Memo Fields ..................................................................... 8-16 8.4 Displaying Data Using the BT200 ..................................................... 8-17 8.4.1 Displaying Measured Data ......................................................... 8-17 8.4.2 Display Transmitter Model and Specifications ........................... 8-17 8.5 Self-Diagnostics .............
1. INTRODUCTION 1. INTRODUCTION • The following safety symbol marks are used in this manual: Thank you for purchasing the DPharp electronic pressure transmitter. The DPharp Pressure Transmitters are precisely calibrated at the factory before shipment. To ensure correct and efficient use of the instrument, please read this manual thoroughly and fully understand how to operate the instrument before operating it.
1. INTRODUCTION (f) Modification • Yokogawa will not be liable for malfunctions or damage resulting from any modification made to this instrument by the customer. • In case of high process temperature, care should be taken not to burn yourself because the surface of body and case reaches a high temperature. • The instrument installed in the process is under pressure. Never loosen the process connector bolts to avoid the dangerous spouting of process fluid. 1.
1. INTRODUCTION 1.3 ATEX Documentation SF This procedure is only applicable to the countries in European Union. Kaikkien ATEX Ex -tyyppisten tuotteiden käyttöhjeet ovat saatavilla englannin-, saksan- ja ranskankielisinä. Mikäli tarvitsette Ex -tyyppisten tuotteiden ohjeita omalla paikallisella kielellännne, ottakaa yhteyttä lähimpään Yokogawa-toimistoon tai -edustajaan. GB All instruction manuals for ATEX Ex related products are available in English, German and French.
1.
2. HANDLING CAUTIONS 2. HANDLING CAUTIONS This chapter describes important cautions regarding how to handle the transmitter. Read carefully before using the transmitter. mode was ordered, ‘SQRT’ is inscribed in field *2; if square root output mode was ordered, ‘SQRT’ is inscribed in field *3. The EJA-A Series pressure transmitters are thoroughly tested at the factory before shipment. When the transmitter is delivered, visually check them to make sure that no damage occurred during ship-ment.
2. HANDLING CAUTIONS 2.4 Selecting the Installation Location CAUTION Maximum working pressure of the model EJA120A differential pressure transmitter is 50 kPa {0.5 kgf/cm2}. Should the pressure exceed 50 kPa {0.5 kgf/ cm2}, it is possible to break the sensor. Proceed with caution when applying pressure. The transmitter is designed to withstand severe environmental conditions.
2. HANDLING CAUTIONS (c) Before conducting these tests, disconnect all signal lines from the transmitter terminals. Perform the tests in the following procedure: and may cause dangerous condition. Please contact Yokogawa for any repair or modification required to the instrument. • Insulation Resistance Test 1) Short-circuit the + and – SUPPLY terminals in the terminal box. 2) Turn OFF the insulation tester.
2. HANDLING CAUTIONS Note 2. Entity Parameters • Intrinsically Safe Apparatus Parameters [Groups A, B, C, D, E, F and G] Vmax = 30 V Ci = 22.5 nF Imax = 165 mA Li = 730 µH Pmax = 0.9 W * Associated Apparatus Parameters (FM approved barriers) Voc ≤ 30 V Ca > 22.5 nF Isc ≤ 165 mA La > 730 µH Pmax ≤ 0.
2. HANDLING CAUTIONS • Take care not to generate mechanical sparking when accessing to the instrument and peripheral devices in a hazardous location. Note 4. Maintenance and Repair • The instrument modification or parts replacement by other than authorized representative of Yokogawa Electric Corporation is prohibited and will void Factory Mutual Explosionproof Approval. c.
2. HANDLING CAUTIONS • Encl “Type 4X” • Temperature Class: T6, T5, and T4 • Process Temperature: 85°C (T6), 100°C (T5), and 120°C (T4) • Ambient Temperature: –40 to 80°C • Supply Voltage: 42 V dc max. • Output Signal: 4 to 20 mA Note 2. Wiring • All wiring shall comply with Canadian Electrical Code Part I and Local Electrical Codes. • In hazardous location, wiring shall be in conduit as shown in the figure. CAUTION: SEAL ALL CONDUITS WITHIN 50 cm OF THE ENCLOSURE.
2. HANDLING CAUTIONS Note 2. Entity Parameters • Intrinsically safe ratings are as follows: Maximum Input Voltage (Ui) = 30 V Maximum Input Current (Ii) = 165 mA Maximum Input Power (Pi) = 0.9 W Maximum Internal Capacitance (Ci) = 22.5 nF Maximum Internal Inductance (Li) = 730 µH • Type "n" ratings are as follows: Maximum Input Voltage (Ui) = 30 V Maximum Internal Capacitance (Ci) = 22.
2. HANDLING CAUTIONS • In case of ANSI 1/2 NPT plug, ANSI hexagonal wrench should be applied to screw in. Note 3. Operation • WARNING: AFTER DE-ENERGIZING, DELAY 10 MINUTES BEFORE OPENING. • WARNING: WHEN AMBIENT TEMPERATURE ≥ 70°C, USE THE HEAT-RESISTING CABLES ≥ 90°C. • Take care not to generate mechanical sparking when accessing to the instrument and peripheral devices in a hazardous location. Note 4.
2. HANDLING CAUTIONS Note 4. Operation • Keep the “CAUTION” label to the transmitter. CAUTION: AFTER DE-ENERGIZING, DELAY 10 MINUTES BEFORE OPENING. WHEN THE AMBIENT TEMP. 70°C, USE HEAT-RESISTING CABLES 90°C. • Take care not to generate mechanical sparking when accessing to the instrument and peripheral devices in a hazardous location. Note 5.
2. HANDLING CAUTIONS (3) Installation (6) Name Plate Name plate WARNING • All wiring shall comply with local installation requirement and local electrical code. • There is no need of the conduit seal for both of Division 1 and Division 2 hazardous locations because this product is sealed at factory. • In case of ANSI 1/2 NPT plug, ANSI hexagonal wrench should be applied to screw in.
2. HANDLING CAUTIONS 2.10 EMC Conformity Standards EN61326-1 Class A, Table 2 (For use in industrial locations) EN61326-2-3 CAUTION This instrument is a Class A product, and it is designed for use in the industrial environment. Please use this instrument in the industrial environment only.
2. HANDLING CAUTIONS 2.12Low Voltage Directive Applicable standard : EN61010-1 (1) Pollution Degree 2 "Pollution degree" describes the degree to which a soild, liquid, or gas which deteriorates dielectric strength or surface resistivity is adhering. " 2 " applies to normal indoor atmosphere. Normally, only non-conductive pollution occurs. Occasionally, however, temporary conductivity caused by condenstaion must be expected.
3. COMPONENT NAMES 3. COMPONENT NAMES Vertical impulse piping type Process connection Pressure-detector section Process connector (Note 1) Horizontal impulse piping type Cover flange External indicator conduit connection (Note 1) Terminal box cover Conduit connection CPU assembly Integral indicator (Note 1) Mounting screw Zeroadjustment screw Transmitter section Range-setting switch (Note 1) (See Subsection 7.
4 . INSTALLATION 4. INSTALLATION 4.1 Precautions Vertical pipe mounting Before installing the transmitter, read the cautionary notes in Section 2.4, “Selecting the Installation Location.” For additional information on the ambient conditions allowed at the installation location, refer to Subsection 10.1 “Standard Specifications.” Transmitter mounting bolt IMPORTANT • When welding piping during construction, take care not to allow welding currents to flow through the transmitter.
4 . INSTALLATION 4.3 Changing the Process Connection Vertical pipe mounting (Process connector upside) U-bolt nut Transmitter mounting bolt The transmitter is shipped with the process connection specified at the time of ordering. To make a change such as modifying the drain (vent) plug(s) attached to the upside of the cover flange on shipment to be attached to the downside follow the procedure below.
4 . INSTALLATION 4.4 Swapping the High/Lowpressure Side Connection 4.4.2 Using the BRAIN TERMINAL BT200 This method is applicable only to the Model EJA110A L, EJA110A- M, EJA110A- H, EJA120A- E, EJA130A- M and EJA130A- H. 4.4.1 Rotating Pressure-detector Section 180° With a BRAIN TERMINAL, you can change which process connection is used as the high-pressure side without mechanically rotating the pressure-detector section 180 as described in Subsection 4.4.1.
4 . INSTALLATION 4.5 Rotating Transmitter Section 4.6 Changing the Direction of Integral Indicator The DPharp transmitter section can be rotated in 90° segments. 1) Remove the two Allen screws that fasten the transmitter section and capsule assembly, using the Allen wrench. 2) Rotate the transmitter section slowly in 90° segments. 3) Tighten the two Allen screws to a torque of 5 N·m.
5. INSTALLING IMPULSE PIPING 5. INSTALLING IMPULSE PIPING 5.1 Impulse Piping Installation Precautions (4) Connecting the Transmitter and 3-Valve Manifold A 3-valve manifold consists of two stop valves to block process pressure and an equalizing valve to equalize the pressures on the high and low pressure sides of the transmitter. Such a manifold makes it easier to disconnect the transmitter from the impulse piping, and is convenient when adjusting the transmitter zero point.
5. INSTALLING IMPULSE PIPING Impulse piping Nipple Vent plug (optional) 3-valve manifold NOTE Ball head lock nut Stop valve (low pressure side) After completing the connection of the transmitter and 3-valve manifold, be sure to CLOSE the low pressure and high pressure stop valves, OPEN the equalizing valve, and leave the manifold with the equalizing valve OPEN. You must do this in order to avoid overloading the transmitter from either the high or the low pressure side when beginning operation.
5. INSTALLING IMPULSE PIPING (6) Preventing Wind Speed Effects in Very Low Differential Pressure Measurement (2) Position of Process Pressure Taps and Transmitter If condensate (or gas) accumulates in the impulse piping, it should be removed periodically by opening the drain (or vent) plugs.
5. INSTALLING IMPULSE PIPING 5.2 Impulse Piping Connection Examples Figure 5.2 shows examples of typical impulse piping connections. Before connecting the transmitter to the process, study the transmitter installation location, the process piping layout, and the characteristics of the process fluid (corrosiveness, toxicity, flammability, etc.), in order to make appropriate changes and additions to the connection configurations. Note the following points when referring to these piping examples.
6. WIRING 6. WIRING 6.1 Wiring Precautions IMPORTANT • Lay wiring as far as possible from electrical noise sources such as large capacity transformers, motors, and power supplies. • Remove electrical connection dust cap before wiring. • All threaded parts must be treated with waterproofing sealant. (A non-hardening silicone group sealant is recommended.) • To prevent noise pickup, do not pass signal and 0ówer cables through the same ducts.
6. WIRING (2) Intrinsically Safe Type For intrinsically safe type, a safety barrier must be included in the loop. 6.3.4 Check Meter Connection Connect the check meter to the CHECK + and – terminals (use hooks). • A 4 to 20 mA DC output signal from the CHECK + and – terminals. Hazardous Location (Note) Use a check meter whose internal resistance is 10 Ω or less.
6. WIRING (2) Flameproof Type Wire cables through a flameproof packing adapter, or using a flameproof metal conduit. Wiring cable through flameproof packing adapter. • Apply a nonhardening sealant to the terminal box connection port and to the threads on the flameproof packing adapter for waterproofing. 6.5 Grounding Grounding is always required for the proper operation of transmitters. Follow the domestic electrical requirements as regulated in each country.
7. OPERATION 7. OPERATION (c) Turn ON power and connect the BT200. Open the terminal box cover, and connect the BT200 to the SUPPLY + and – terminals. (d) Using the BT200, confirm that the transmitter is operating properly. Check parameter values or change the setpoints as necessary. See Chapter 8 for BT200 operation. If the transmitter is equipped with an integral indicator, its indication can be used to confirm that the transmitter is operating properly. 7.
7. OPERATION Confirming that Transmitter is Operating Properly Using the BT200 • If the wiring system is faulty, ‘communication error’ appears on the display. • If the transmitter is faulty, ‘SELF CHECK ERROR’ appears on the display. 7.2 Zero Point Adjustment Adjust the zero point after operating preparation is completed. IMPORTANT Do not turn off the power to the transmitter immediately after a zero adjustment.
7. OPERATION Using the BT200 Zero point can be adjusted by simple key operation of the BT200. IMPORTANT • Remove the BT200 from the terminal box, and confirm that none of the terminal screws are loosened. • Close the terminal box cover and the amplifier cover. Screw each cover in tightly until it will not turn further. • Two covers are required to be locked on the CENELEC and IECEx Flameproof type transmitters. An Allen head bolts (shrouding bolts) are provided under edge of the each cover for locking.
7. OPERATION 7.5.2 7.5 Venting or Draining Transmitter Pressure-detector Section Venting Gas 1) Gradually open the vent screw to vent gas from the transmitter pressur-detector section. (See Figure 7.5.2.) 2) When the transmitter is completely vented, close the vent screw. 3) Tighen the vent screw to a torque of 10 N·m.
7. OPERATION 6) Press the range-setting push-button. The integral indicator then displays “HSET.” 7) Apply a pressure of 3 MPa to the transmitter. (Note 1) 8) Turn the external zero-adjustment screw in the desired direction. The integral indicator displays the output signal in %. (Note 2) 9) Adjust the output signal to 100% (5 V DC) by rotating the external zero-adjustment screw. Doing so completes the HRV setting. 10) Press the range-setting push-button.
8. BRAIN TERMINAL BT200 OPERATION 8. BRAIN TERMINAL BT200 OPERATION The DPharp is equipped with BRAIN communications capabilities, so that range changes, Tag No. setup, monitoring of self-diagnostic results, and zero point adjustment can be handled by remote control via BT200 BRAIN TERMINAL or CENTUM CS console. This section describes procedures for setting parameters using the BT200. For details concerning the BT200, see IM 01C00A11-01E, “BT200 User’s Manual.” 8.2 BT200 Operating Procedures 8.2.
8. BRAIN TERMINAL BT200 OPERATION 8.2.2 Operating Key Functions Use the function key [F1] CODE to enter symbols. The following symbols will appear in sequence, one at a time, at the cursor each time you press [F1] CODE: (1) Alphanumeric Keys and Shift Keys You can use the alphanumeric keys in conjunction with the shift keys to enter symbols, as well as alphanumeric keys. / . – , + * ) ( ’ & % $ # ” ! To enter characters next to these symbols, press [ > ] to move the cursor.
8. BRAIN TERMINAL BT200 OPERATION 8.2.3 Calling Up Menu Addresses Using the Operating Keys ––WELCOME–– BRAIN TERMINAL ID: BT200 STARTUP SCREEN check connection push ENTER key UTIL The utility screen contains the following items. 1. BT200 ID settings 2. Security code settings 3. Switching language of messages (Japanese or English) 4. LCD contrast setting 5. Adjusting printout tone (BT200-P00 only) UTILITY 1.ID 2.SECURITY CODE 3.LANGUAGE SELECT 4.LCD CONTRAST 5.
8. BRAIN TERMINAL BT200 OPERATION 8.3 Setting Parameters Using the BT200 8.3.1 Parameter Summary Instruments to which applicable: F: Differential pressure transmitters P: Pressure transmitters L: Liquid level transmitters No. Item 01 MODEL 02 TAG NO. EJA110A, EJA120A, and EJA130A EJA310A, EJA430A, EJA440A, EJA510A, and EJA530A EJA210A and EJA220A Description Model+capsule type Tag number 03 SELF CHECK Self-diagnostic result A DISPLAY Measured data display A10 OUTPUT (%) A11 ENGR.
8. BRAIN TERMINAL BT200 OPERATION No. D Item AUX SET 1 D31 STAT. P.
8. BRAIN TERMINAL BT200 OPERATION 8.3.2 Parameter Usage and Selection IMPORTANT Before describing the procedure for setting parameters, we present the following table showing how the parameters are used and in what case. If the transmitter is turned off within 30 seconds after parameters have been set, the set data will not be stored and the terminal returns to previous settings. Table 8.3.1 Parameter Usage and Selection Setup Item Tag No. setup P.8-7 Calibration range setup P.
8. BRAIN TERMINAL BT200 OPERATION 8.3.3 Setting Parameters Set or change the parameters as necessary. After completing these, do not fail to use the “DIAG” key to confirm that “GOOD” is displayed for the selfdiagnostic result at _60: SELF CHECK. set data. The set data items flash. When all items have been confir- PRINTER OFF F2:PRINTER ON FEED POFF NO med, press the again. (To go back to the setting panel, press the (NO) key. (1) Tag No.
8. BRAIN TERMINAL BT200 OPERATION b. Setting Calibration Range Lower Range Value and Higher Range Value (C21: LOW RANGE, C22: HIGH RANGE) These range values are set as specified in the order before the instrument is shipped. Follow the procedure below to change the range. • Example 2: With present settings of 0 to 30 kPa, set the Higher range value to10 kPa. DEL FEED DEL CLR FEED NO SET C20:PRESS UNIT kPa C21:LOW RANGE 0.5 kPa C22:HIGH RANGE 30.
8. BRAIN TERMINAL BT200 OPERATION (4) Output Mode and Integral Indicator Display Mode Setup (C40: OUTPUT MODE) The mode setting for the output signal and the integral indicator coordinate as shown in the table below. BT200 Display Output Mode Integral Indicator Display Mode OUT: LIN DSP: LIN Linear Linear • Example: Change the low cut setting range from 10% to 20%, and the low cut mode from LINEAR to ZERO.
8. BRAIN TERMINAL BT200 OPERATION (7) Integral Indicator Scale Setup The following 5 displays are available for integral indicators. D20: DISP SELECT and Display NORMAL % Description and Related parameters Indicates –5 to 110% range depending on the Measurement range (C21, C22). User-set engineering unit display D20: DISP SELECT NORMAL % INP PRES PRES & % D20: DISP SELECT USER SET USER & % Set for user-set engineering unit display. Transmitter is set A10:OUTPUT (%) 45.
8. BRAIN TERMINAL BT200 OPERATION b. Setting User-set Engineering Unit (D21: DISP UNIT) This parameter allows entry of the engineering units to be displayed on the BT200. When the instrument is shipped, this is set as specified in the order. c. Lower and Higher Range Value Setup in Engineering Unit (D22: DISP LRV, D23: DISP HRV) These parameter items are used to set the lower and higher range values for the engineering unit display. Follow the procedure below to change this setting.
8. BRAIN TERMINAL BT200 OPERATION (9) Unit Setup for Displayed Static Pressure (D31: STAT.P.UNIT) Follow the procedure below to change the static pressure units. Changing this parameter changes the unit for the A30: STATIC PRESS (static pressure) display. Optional code/C1 The parameter is set to LOW. If a failure, output which is –5% or lower is generated. The parameter D53: ERROR OUT is set to LOW from the factory.
8. BRAIN TERMINAL BT200 OPERATION (14) Bi-directional Flow Measurement Setup (E30: BI DIRE MODE) (a) This parameter enables selection of 50% output at an input of 0 kPa. Procedure is shown in the figure below. (b) Combining this with C40: OUTPUT MODE provides a square root output computed independently for 0% to 50% output and for 50% to 100% output.
8. BRAIN TERMINAL BT200 OPERATION Note that changing the higher range value does not cause the lower range value to change but does change the span. (a) Follow the procedure below when setting the present output to 0% (4 mA). Output is 0.5%. A10:OUTPUT (%) 0.5 % • Example 2: When the higher range value is to be changed to 10 kPa with the present setting of 0 to 30 kPa, take the following action with an input pressure of 10 kPa applied. SET J10:ZERO ADJ 0.0 % + 000.
8. BRAIN TERMINAL BT200 OPERATION (b)-2 Follow the procedure below to use J11: ZERO DEV. • Zero point adjustment using external zero-adjustment screw on the transmitter Turn the zero-adjustment screw on the outside of the transmitter case using a slotted screwdriver. Turn the screw to the right to increase the zero point or to the left to decrease the zero output; the zero adjusts in increments of 0.01% of the range setting.
8. BRAIN TERMINAL BT200 OPERATION • Example: For the range of 0 to 30 kPa. A40: INPUT = 30.15 kPa J15: SPAN ADJ = 0.15 % IMPORTANT 1. Test output is held for approximately 10 minutes, and then released automatically after the time has elapsed. Even if the BT200 power supply is turned off or the communication cable is disconnected during test output, it is held for approximately 10 minutes. 2. Press the (OK) key to release test output immediately.
8. BRAIN TERMINAL BT200 OPERATION 8.4 Displaying Data Using the BT200 8.4.1 8.5 Self-Diagnostics 8.5.1 Displaying Measured Data Checking for Problems (1) Identifying Problems with BT200 The following four areas can be checked. (a) Whether connections are good. (b) Whether BT200 was properly operated. (c) Whether settings were properly entered. (d) History of the errors. See examples below. The BT200 can be used to display measured data. The measured data is updated automatically every 7 seconds.
8. BRAIN TERMINAL BT200 OPERATION (2) Checking with Integral Indicator • Example 3: Checking the history of the errors Connect the BT200 to the transmitter, and call item “P.” MENU J:ADJUST K:TEST M:MEMO P:RECORD HOME SET ADJ ESC PARAM P10:ERROR REC 1 ERROR P11:ERROR REC 2 ERROR P12:ERROR REC 3 GOOD DATA DIAG PRNT ESC NOTE If an error is detected in the self-diagnostic, an error number is displayed on the integral indicator.
8. BRAIN TERMINAL BT200 OPERATION 8.5.2 Errors and Countermeasures The table below shows a summary of error messages. Table 8.5.1 Error Message Summary Integral Indicator Display BT200 Display Cause Output Operation during Error Countermeasure None GOOD ---- ERROR Er. 01 CAP MODULE FAULT Capsule problem.*1 Outputs the signal (Hold, High, or Low) set with parameter D53. Replace the capsule when error keeps appearing even after restart.*2 Er. 02 AMP MODULE FAULT Amplifier problem.
9. MAINTENANCE 9. MAINTENANCE 9.1 Overview WARNING Since the accumulated process fluid may be toxic or otherwise harmful, take appropriate care to avoid contact with the body, or inhalation of vapors during draining condensate or venting gas in transmitter pressure-detector section and even after dismounting the instrument from the process line for maintenance. Maintenance of the transmitter is easy due to its modular construction.
9. MAINTENANCE Table 9.2.1 Instruments Required for Calibration Name Yokogawa-recommended Instrument Power supply Model SDBT or SDBS distributor Load resistor Load adjustment resistor [100 Ω ±1%, 1 W] Voltmeter Digital manometer Pressure generator Pressure source Remarks 4 to 20 mA DC signal Model 2792 standard resistor [250 Ω ±0.005%, 3 W] Model 2501 A digital multimeter Accuracy (10V DC range): ±(0.002% of rdg + 1 dgt) Model MT220 precision digital manometer 1) For 10 kPa class Accuracy: ±(0.
9. MAINTENANCE 9.4 Disassembly and Reassembly 9.4.1 Replacing the Integral Indicator CAUTION This section describes procedures for disassembly and reassembly for maintenance and component replacement. Cautions for Flameproof Type Transmitters Users are prohibited by law from modifying the construction of a flameproof type transmitter. This would invalidate the agency approval and the transmitter’s use in such rated area.
9. MAINTENANCE Attaching the Integral Indicator Integral indicator can be installed in the following three directions. F0910.EPS Figure 9.4.1 Installation Direction of Indicator 1) Align both the LCD board assembly and CPU assembly connectors and engage them. 2) Insert and tighten the two mounting screws. 3) Replace the cover. Output terminal cable Press forward 9.4.2 Replacing the CPU Board Assembly This subsection describes the procedure for replacing the CPU assembly. (See Figure 9.4.
9. MAINTENANCE NOTE Removing the Capsule Assembly Confirm that the zero-adjustment screw pin is placed properly in the groove on the bracket prior to tightening the two bosses. If it is not, the zero-adjustment mechanism will be damaged. IMPORTANT Exercise care as follows when cleaning the capsule assembly. • Handle the capsule assembly with care, and be especially careful not to damage or distort the diaphragms that contact the process fluid.
9. MAINTENANCE 9.5 Troubleshooting Pressure-detector section Nut Cover flange Allen screw If any abnormality appears in the measured values, use the troubleshooting flow chart below to isolate and remedy the problem. Since some problems have complex causes, these flow charts may not identify all. If you have difficulty isolating or correcting a problem, contact Yokogawa service personnel. 9.5.
9. MAINTENANCE 9.5.2 Troubleshooting Flow Charts Output travels beyond 0% or 100%. The following sorts of symptoms indicate that transmitter may not be operating properly. Example : • There is no output signal. • Output signal does not change even though process variable is known to be varying. • Output value is inconsistent with value inferred for process variable. Connect BRAIN TERMINAL and check self-diagnostics.
9. MAINTENANCE Large output error. Connect BRAIN TERMINAL and check self-diagnostics. Does the selfdiagnostic indicate problem location? NO YES Refer to error message summary in Subsection 8.5.2 to take actions. NO Are valves opened or closed correctly? YES Fully close equalizing valve, and fully open high pressure and low pressure valves. NO Is impulse piping connected correctly? YES Refer to individual model user manuals and connect piping as appropriate for the measurement purpose.
10. GENERAL SPECIFICATIONS 10. GENERAL SPECIFICATIONS 10.1 Standard Specifications Output “ ”: Two wire 4 to 20 mA DC output with digital communications, linear or square root programmable. BRAIN or HART FSK protocol are superimposed on the 4 to 20 mA signal. Failure Alarm: Output status at CPU failure and hardware error; Up-scale: 110%, 21.6 mA DC or more(standard) Down-scale: -5%, 3.2 mA DC or less -2.5%, 3.
10. GENERAL SPECIFICATIONS Installation Non-wetted Parts Materials: Bolting; SCM435, SUS630, or SUH660 Housing; Low copper cast-aluminum alloy with polyurethane paint (Munsell 0.6GY3.1/2.0) Degrees of Protection IP67, NEMA4X, JIS C0920 immersion proof Cover O-rings; Buna-N Data plate and tag; SUS304 or SUS316(optional) Fill Fluid; Silicone or Fluorinated oil (optional) Weight: 3.9 kg (8.
10. GENERAL SPECIFICATIONS 10.
10. GENERAL SPECIFICATIONS Model EJA120A Model EJA120A Output Signal Description Suffix Codes . . . . . . . . . . . . . . . . . . . . Differential pressure transmitter (for draft application) -D . . . . . . . . . . . . . . . . . . 4 to 20 mA DC with digital communication (BRAIN protocol) -E . . . . . . . . . . . (Note 1) 4 to 20 mA DC with digital communication (HART protocol) -F . . . . . . . . . . . (Note 4) Digital communication (FOUNDATION Fieldbus protocol) -G . . . . . . . . . . .
10. GENERAL SPECIFICATIONS Model EJA130A Model EJA130A Output Signal Measurement span(capsule) Suffix Codes ......................... -D . . . . . . . . . . . . . . . . . . . . . . . -E . . . . . . . . . . . . . . . . (Note 1) -F . . . . . . . . . . . . . . . . (Note 4) -G . . . . . . . . . . . . . . . . (Note 6) M...................... H...................... Wetted parts material S.................... ................... Process connection 0 1................... 2................... 3..............
10. GENERAL SPECIFICATIONS 10.3 Optional Specifications For FOUNDATION Fieldbus explosion protected type, see IM 01C22T02-01E. For PROFIBUS PA explosion protected type, see IM 01C22T03-00E. Item Description Factory Mutual (FM) CENELEC ATEX Code FM Explosionproof Approval *1 Explosionproof for Class I, Division 1, Groups B, C and D Dust-ignitionproof for Class II/III, Division 1, Groups E, F and G Hazardous (classified) locations, indoors and outdoors (NEMA 4X) Temperature class: T6 Amb. Temp.
10. GENERAL SPECIFICATIONS Item Canadian Standards Association (CSA) Description Code CSA Explosionproof Approval *1 Certificate: 1089598 Explosionproof for Class I, Division 1, Groups B, C and D Dustignitionproof for Class II/III, Division 1, Groups E, F and G Division2 ‘SEALS NOT REQUIRED’ , Temp. Class: T4, T5, T6 Encl Type 4x Max. Process Temp.: T4; 120 C (248 F), T5; 100 C (212 F), T6; 85 C (185 F) Amb. Temp.
10. GENERAL SPECIFICATIONS Item Description Code Amplifier cover only P Amplifier cover and terminal cover, Munsell 7.5 R4/14 PR Epoxy resin-baked coating X1 316 SST exterior parts Exterior parts on the amprifier housing (nameplates, tag plates, zero-adjustment screw, stopper screw) will become 316 or 316L SST. HC Lightning protector Transmitter power supply voltag: 10.5 to 32 V DC (10.
10. GENERAL SPECIFICATIONS 10.4 Dimensions Model EJA110A and EJA120A Vertical Impulse Piping Type Process connector upside (INSTALLATION CODE ‘6’) (For CODE ‘2’, ‘3’ or ‘7’, refer to the notes below.) Unit: mm (approx. inch) Process connection (Optional) 259(10.20) 197 (7.76) 146 (5.75) 110 (4.33) Low pressure side (Note 1) 54 (2.13) ø78 (3.07) 46 (1.81) Process connectors 148 (5.83) High pressure side 102 (4.02) 234(9.21) 72 (2.83) 97 (3.
10. GENERAL SPECIFICATIONS Model EJA130A Vertical Impulse Piping Type Process connector upside (INSTALLATION CODE ‘6’) (For CODE ‘2’, ‘3’ or ‘7’, refer to the notes below.) Unit: mm (approx. inch) 259(10.20) 132(5.20) 200(7.87) High pressure side 146(5.75) Process connection 54 (2.13) Low pressure side (Note 1) 192(7.56) ø78 (3.07) 68(2.68) Internal indicator (Optional) 124(4.88) 279(10.98) 94(3.70) 97(3.82) Conduit connection Zero adjustment Ground terminal 53(2.
Customer Maintenance Parts List DPharp EJA Series Transmitter Section 2 5 4 11 A 10 3 12 13 1 2 2 1 14 A 6 7-2 7-1 Item Part No.
Customer Maintenance Parts List Model EJA110A, EJA120A and EJA130A Differential Pressure Transmitter (Pressure-detector Section) Horizontal Impulse Piping Type 15 2 11–1 18 19 16 1 3 4–1 4–1 3 5 10–1 6 7 12–1 21 12–2 13–1 22 For EJA130A 14 11–2 10–2 4–2 13–3 4–2 12–3 13–2 All Rights Reserved, Copyright © 1999, Yokogawa Electric Corporation.
2 Vertical Impulse Piping Type 14 3 13–1 4–1 1 11–1 3 12–1 4–1 2 21 8 10–1 9 22 18 20 15 17 For EJA130A 13–3 13–2 12–3 11–2 4–2 4–2 10–2 July 2001 Subject to change without notice. Printed in Japan.
3 Item 1 2 3 4-1 4-2 5 6 7 8 Part No.
4 Item Part No.
5 Capsule Assembly Part Number EJA110A Table 1.
REVISION RECORD Title: Model EJA110A, EJA120A and EJA130A Differential Pressure Transmitter Manual No.: IM 01C21B01-01E Edition Date Page 1st Jun. 1997 – 2nd Mar. 1998 CONTENTS 1-1 5-3 6-1 11-1 11-3 11-7 2-9+ CMPL 3rd Sep. 1998 2-13 8-18 11-1 11-3 11-4 11-5 CMPL 4th Oct. 1999 - 2-8 8-4 10-3 CMPL 5th Sep. 2000 2-8 8-5 9-5 10-2 10-3 10-4 10-5 10-6 10-7 Revised Item New publication Page 3 1 • Add REVISION RECORD. • Add ‘NOTE’ notice for FOUNDATION Fieldbus and HART protcol versions. 5.1.
Edition Date Page 5th (Continued) Sep. 2000 CMPL 6th July 2001 2-10 8-4, 8-5 10-3 CMPL Revised Item CMPL 1C21A1-02E 4th 5th(Manual Change) • Add part numbers to 7-1 CPU Assembly. F9342AF and F9342AM CMPL 1C21A1-02E 5th 6th • Add part numbers to 7-2 CPU Assembly. F9342BG • Change part number of 7-1 CPU Assembly. F9342BC → F9342BB • Change part number of 10 Plug G9330DK → G9330DP CMPL 1C21B0-01E 1st 2nd(Manual Change) Page 3 • Add part number to 10-1 and 10-2 Bolt.
Edition Date Page 11th (Continued) Oct. 2008 2-9 2-11 7-1 8-4, 8-5 8-6 8-9 and later 8-19 9-1 9-5 10-3 through 10-5 10-7, 10-8 10-9, 10-10 CMPL Revised Item 2.9.4 2.10 7.1 • Change explosion protection marking for type n from EEx to Ex. • Update EMC conformity standards. • Modify layout. • Change the maximum working pressure to 16 MPa. 8.3.1 • Add new parameters. 8.3.2 • Add items in table 8.3.1. 8-3.3 • Add (6)Change Output Limits and (17)Span Adjustment. Renumber the items. 8.5.
