BA 194C/07/en/07.02 No. 51500268 Software version 2.50 or later Liquisys M CPM 223 / 253 Transmitter for pH and Redox Operating Instructions ENDRESS+HAUSER LIQUISYS S slp 8.
Need information on the instrument? Please read the following chapters: General information Safety You wish to install the instrument. The required steps are described in this chapter: Installation You wish to operate or reconfigure the instrument.
Liquisys M CPM 223 / 253 Table of contents PM253E00.CHP Table of contents 1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1 1.2 1.3 1.4 1.5 Symbols used . . . . . . . Storage and transport . Unpacking . . . . . . . . . . Dismantling, packaging Product structure . . . . . 2 2 2 2 3 .... .... .... and .... ........ ........ ........ disposal . ........ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General information Liquisys M CPM 223 / 253 1 General information 1.1 Symbols used Warning: Double insulation This symbol alerts to hazards which could cause serious injuries as well as damage to the equipment if ignored. Equipment protected by double insulation. Alarm relay Caution: This symbol alerts to possible faults which could arise from incorrect operation. They could cause damage to the equiment if ignored. Note: Input Output This symbol indicates important items of information. 1.
Liquisys M CPM 223 / 253 General information PM253E01.CHP 1.5 Product structure You can identify the instrument version by the order code on the nameplate. Sub “codes” are the release codes for Software upgrade shown for ChemoClean (left of diagonal line) or Plus package (right of diagonal line). ENDRESS+HAUSER Made in Germany LIQUISYS M pH / Redox D-70839 Gerlingen order code CPM 253-PS1515 codes - 3472 / 8732 serial no. 276944 meas.
Safety Liquisys M CPM 223 / 253 2 Safety 2.1 Intended application The CPM 223/253 transmitter is a field-tested and reliable transmitter used to determine the pH or redox (ORP) value. The CPM 223/253 is particularly suitable for use in the following areas of application: 2.
Liquisys M CPM 223 / 253 Safety PM253E02.CHP 2.4 Monitoring and safety features Safety features Monitoring features The transmitter is protected against external influences and damage by the following design measures: In the event of a system error or power failure, an alarm condition is signalled via a faultsignalling contact. • Rugged housing • Degree of protection provided by enclosure: IP 65 (CPM 253) • UV resistance 2.
Installation Liquisys M CPM 223 / 253 3 Installation The following procedure should be followed for a complete measuring system installation: • Installation or attachment of transmitter (see chapter 3.3) • Selection and connection of cable and electrode (see chapters 3.4, 3.5 and 9) • Installation is followed by start-up (see chapter 5) 3.
Liquisys M CPM 223 / 253 Installation PM253E03.CHP 3.2 Dimensions Pg 13.5 Pg 7 Pg 16 11 157 ENDRESS+HAUSER LIQUISYS REL1 ALARM CAL REL REL2 REL1 70 115 247 REL2 ∅6 E 70 154 170 FELD1.CDR Fig. 3.2 Dimensions of Liquisys M CPM 253 Fig. 3.3 Inside of housing of Liquisys M CPM 253: 1 Removable electronics box 2 Partition plate 3 Terminal blocks 4 Fuse Note: There is a hole in the punching for Pg 16 cable entry. It serves as a pressure balance during air freight dispatching.
Liquisys M CPM 223 / 253 96 Installation 90 139 6 Fig. 3.4 Liquisys M CPM 223, Mounting version EINBAU2.CDR 3.3 Mounting 3.3.1 Field instrument Several mounting options are available for the Liquisys M in the field instrument version: Weather protection cover CYY 101 can be used for outdoor installation in conjunction with all mounting variants. • Post mounting on cylindrical pipes • Post mounting on a square post • Wall mounting with fastening screws.
Liquisys M CPM 223 / 253 Installation PM253E03.CHP Post mounting kit Universal mounting post CYY 102 Mounting kit for installation of field housing on horizontal and vertical pipes (max. ∅ 60 mm); material: stainless steel SS 304 (AISI 304); order no. 50086842 Square tube for mounting of measuring transmitters; SS 304 material; order no.: CYY102-A 90 ∅8 70 1495 ∅ max. 60 60 x 60 60 70 90 M6 ∅6 70 150 90 left: Mounting kit for post mounting on cylindrical pipes 120 MONT5.
Installation Liquisys M CPM 223 / 253 3.3.2 Fig. 3.7 Pipe mounting of Liquisys M field instrument Mounting examples MONT10.CDR Liquisys M field instrument left: Wall mounting Fig. 3.8 10 right: Mounting with universal post and weather protection cover MONT2.
Liquisys M CPM 223 / 253 Installation PM253E03.CHP 3.3.3 Panel-mounted instrument The device is attached using the supplied tensioning screws (see Fig. 3.9). The required overall installation depth is approx. 165 mm. 92+0,5 92+0.5 1 2 92 3 96 90 3 33 57 3 max. 45 approx. 25 139 6 MONT9.CDR Endress+Hauser Fig. 3.
Installation Liquisys M CPM 223 / 253 3.4 Electrical connection Connection diagram The connection diagram depicted in Fig. 3.10 shows the connections of an instrument equipped with all the options. The connection of the various electrodes with the measuring cables is shown in more detail in the subsequent figures. 41 pH/SRC 42 Electrode 43 Ref.
Liquisys M CPM 223 / 253 Installation PM253E03.CHP Note: Caution: • Please label the sensor terminal • Terminal designated as NC block with the enclosed sticker. may not be switched. • Connect the ground terminal with • Undesignated terminals PE. may not be switched.
Installation Liquisys M CPM 223 / 253 3.5 Electrode installation and measuring cable connection Measuring cable connection The terminal block is located in a separate connection compartment which is accessible by opening the plastic cover. Remove the pre-pressed knock-outs for cable entry. Note: • Protect connectors, cable ends and terminals against moisture to prevent inaccurate measurement! The pH and redox electrodes are connected using special terminated and shielded multicore cables.
Liquisys M CPM 223 / 253 Installation PM253E03.CHP Cable termination for panel-mounted instrument CPM 223 with solder-free BNC plug (for glass electrodes only) 1. Cut off wire end sleeves of the coaxial cable. Inner screen BK (Ref.) 2. Insert cable gland (➀) and washer (➁) on cable, remove inner insulation (13 mm), then screw clamping ring (➂) onto insulation. Please note: Parts ➀ to ➂ are supplied for cable diameters of 3.2 mm and 5 mm. 3.
Installation Liquisys M CPM 223 / 253 Note: • The instrument is pre-configured for symmetrical measurement. Change the configuration in field A2 for asymmetrical measurement (see chapter 5.2.1). • The conductor for the potential matching pin must be connected to the “PA/PM” terminal of the instrument for symmetrical measurement. • If the software setting “asymmetrical” is chosen for a symmetrical connection, this will reduce the service life of the reference electrode.
Liquisys M CPM 223 / 253 Operation PM253ED4.CHP 4 Operation 4.
Operation Liquisys M CPM 223 / 253 4.3 Keys CAL key When the CAL key is pressed, the instrument prompts for the calibration access code: Code 22 for calibration Code 0 or any code for calibration data checking. Press the CAL key to acknowledge the calibration data or to proceed within the calibration menu. ENTER key The ENTER key has serveral functions: Opens the Setup menu in measuring mode Stores (acknowledges) data entered in Setup mode Moving on within the function groups.
Liquisys M CPM 223 / 253 Operation PM253ED4.CHP 4.4 Auto / manual mode of operation Auto mode In this mode of operation, the relays are controlled by the transmitter. REL key In manual mode, the REL key is used to select one of the relays or the cleaning function present in the instrument. Switching to manual mode The instrument is switched to the manual mode for relay setting by pressing the following keys: Press AUTO key. Enter code 22. Confirm with ENTER key. Select relay or function.
Operation Liquisys M CPM 223 / 253 4.5 Operating concept 4.5.1 Operating modes Measuring mode: Standard mode of operation, display of current measured values Setup mode: Access to all configuration settings Calibration mode: Execution of calibration routine Code The function groups are selected with the PLUS or MINUS key Fig. 4.3 Description of possible operating modes SET-MOD.CDR Note: • Remains in Setup mode for approx. 15 mins., the system automatically jumps back to measuring mode.
Liquisys M CPM 223 / 253 Operation PM253ED4.CHP 4.5.2 Access codes All instrument access codes are fixed, i.e. they cannot be modified. When the instrument requests the access codes, it recognises the difference between codes (cf. Fig. 5.3): • CAL key + Code 22: Access to Calibration and Offset menus. • ENTER + Code keys 22: Access to the Configuration menus, allowing configuration and user-specific settings. 4.5.3 • PLUS + ENTER + Code keys 9999: Locks the keypad.
Operation Liquisys M CPM 223 / 253 4.5.4 Hold function: “freezing” of outputsfreezes” the outputs The current output is “frozen” in the setup mode and during calibration, i.e. the last current value is constantly output. The display shows the “HOLD” message. In case of steady control (4... 20 mA) on current output 2, it is set to 0/4 mA during Hold. Note: • Hold settings can be found in chapter 5.5, function S2. • During automatic operation, all contacts will go to their normal positions.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5A.CHP 5 Instrument configuration After power-up the instrument performs a self-test and then enters to measuring mode. Now it can be configured and calibrated for the first time. The values set by the user are kept even in the event of a power failure.
Instrument configuration Liquisys M CPM 223 / 253 Factory settings When the instrument is switched on for the first time, the factory settings are in effect. The following table provides an overview of all major settings. Please refer to the description of the individual functions in chapter 5 for all other factory settings (the factory settings are printed in bold face).
Liquisys M CPM 223 / 253 Instrument configuration PM253E5A.CHP 5.1 Start-up After switching the instruement on, make the following settings to the specified function groups: • Function group SERVICE (S) S1: Select language and exit function group. • Function group SETUP 1 (A) Adjust all the parameters in this group, see chapter 5.2.1. 5.2 • Function group SETUP 2 (B) Make all settings in this group, see chapter 5.2.2. Other configuration options are explained in the chapters to follow for each menu.
Instrument configuration Coding A5 A6 Selection or range Factory setting (bold) Field Glass Antim = Antimony IsFET Selection of electrode Pt 100 Pt 1K NTC 30K None Selection of temperature sensor 5.2.2 Coding Field B1 Selection of type of temperature compensation (during process) Display Info For glass electrodes: glass For IsFET sensors: IsFET Glass A5 Only glass electrodes with the zero point at pH 7 may be used.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5A.CHP 5.3 Current input This function group offers two independent application solutions, provided that the current output of an external measured quantity, e.g. flow meter, is connected to the 4 … 20 mA input of Liquisys M CPM 223 / 253.
Instrument configuration 5.3.2 Liquisys M CPM 223 / 253 Feedforward control to PID controller In processes with very short response times it may be practical to apply the flow rate to the controller, if the flow rate fluctuates, in order to optimise the control process. Measuring water extraction point Static mixer Injection points Flow meter F Liquisys M CPM 253 CPA 250 with CPS 11 ENDRESS+HAUSER LIQUISYS M mg/l 0.42 25.0 °C REL1 ALARM CAL REL REL2 REL1 E REL2 Acid Fig. 5.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5A.CHP Coding Field Selection or range Factory setting (bold) Function group CURRENT INPUT Z Z1 Z2 Z3 Info Z CUR.INPUT Select flow rate monitoring of main stream (with controller switch-off) Off Input Enter delay for controller switch-off by current input 0s 0 ... 2000 s Enter delay for controller switch-on by current input Display 0s 0 ... 2000 s Off Z1 Cont.
Instrument configuration 5.4 Liquisys M CPM 223 / 253 Current outputs The function group CURRENT OUTPUT is used to configure the individual outputs. Either a linear (O3 (1)) or, in conjunction with the plus package, a user-defined current output characteristic (O3 (3)) can be entered. Furthermore, a current output value can be simulated to check the current outputs (O3 ( 2)). The controller set value in field R 237 / R 266 can be output via current output 2, if available.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5A.
Instrument configuration Coding O3 (2) O321 O3 (3) O331 O332 O333 O334 O335 Field Selection or range Factory setting (bold) Current output simulation lin = linear (1) sim = simulation (2) Tab = Tabelle (3) Enter simulation value current value 0.00 ... 22.00 mA Enter current output table (only for S version) lin = linear (1) sim = simulation (2) Tab = Table (3) Selection of table option read edit Enter number of table value pairs 1 1 ... 10 Selection of table value pair 1 1 ... No.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5A.CHP 5.5 Monitoring functions The monitoring functions are used to define various alarms and to set output contacts. Each individual error can be defined to be effective or not (at the contact or error current) Moreover, the eletrode can be checked for glass breakage, or for leak current at the electrode (P1, P2, P7). An alarm condition can be defined to activate a cleaning function (F8). 5.5.
Instrument configuration Coding F6 F7 F8 Field Set alarm contact to be effective for selected error Selection or range Factory setting (bold) yes no Set error current to be effective for selected error no yes Automatic start of cleaning function? no yes Liquisys M CPM 223 / 253 Display yes F6 Rel.Assg no F7 Curr.Assg no F8 Info If set “no” all the other alarm settings (e. g. alarm delay) are also deactivated. The settings themselves are retained.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5A.CHP 5.5.2 Check The function group CHECK is only accessible for instruments equipped with the Plus packet. Two different monitoring functions can be selected for the measurement in the function group CHECK: SCS electrode monitoring The sensor check system monitors the pH and reference electrode for inaccurate measurement and total failure. The SCS detects: – Breakage of electrode glass – Fine short circuits in the pH measuring circuit, e.g.
Instrument configuration Liquisys M CPM 223 / 253 Limit monitoring This function monitors the measuring value for exceeding monitoring limits and triggers an alarm.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5A.CHP Coding Field Selection or range Factory setting (bold) Display Info pH 16.00 P8 HighAlarm Enter upper alarm threshold 16.00 pH -2.00 ... 16.00 pH P9 Select process monitoring (PCS alarm) Off AC CC AC+CC AC! CC! ACCC! Off P9 ProcMonit P10 Enter maximum permissible period for lower alarm threshold 60 min 0 ... 2000 min 60 P10 Tmax Low P11 Enter maximum permissible period for upper alarm threshold 120 min 0 ...
Instrument configuration 5.6 Liquisys M CPM 223 / 253 Relay contact configuration The function group RELAYS is only accessible for instruments equipped with the Plus packet. The relay contacts described below can be selected and configured as required (max.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5B.CHP 5.6.2 P(ID) controller The Liquisys M supports the definition of various controller functions. On the basis of the PID controller, P, PI, PD and PID controllers can be implemented. The best control response is obtained using the controller best suited to the application in question.Depending on the selection in field R 237 / R 266, the set value can be output via relay or current output 2.
Instrument configuration Liquisys M CPM 223 / 253 Control and fine-optimisation of set parameters using a recorder Actual value Actual Tn too large Tn too small Time Time Actual value Actual Kp too small Kp too large Time Time Actual Optimal setting Fig. 5.11 Optimisation of settings Tn and Kp Time REGEL02.CDR Actuating signal outputs (R237 ... R2310) The control contact in question outputs a switched signal. The intensity of this signal is proportional to the controller’s control output.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5B.CHP Control characteristic for direct and inverted control action Field R236 offers two control characteristics for selection which have the effects shown in the following diagram. Y 100 % direct = max. function Xw – Xw Y 100 % inverted = min. function –Xw REGEL03.CDR 5.6.3 Fig. 5.13 Control characteristic of a proportional-action controller with direct and inverted control action Fig. 5.
Instrument configuration 5.6.4 Liquisys M CPM 223 / 253 ChemoClean function Just like the timer function, ChemoClean can also be used to start a cleaning cycle. However, ChemoClean supports different cleaning and rinse intervals. • Use relays 3 (water) and Thus, irregular cleaning with different repeat cycles is possible, and cleaning times with post-rinse times can be individually defined. • Abortion of the cleaning process is Note: 4 (cleaner) for the ChemoClean function.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5B.CHP Coding Field Selection or range Factory setting (bold) Function group RELAIS R R1 R2 (1) R211 Display Info R Relay contacts can be selected and adjusted.
Instrument configuration Coding R216 R217 R2 (2) R221 Field Liquisys M CPM 223 / 253 Selection or range Factory setting (bold) Enter alarm threshold (as an absolute value) pH 16.00 pH –2,00 ... 16.00 1500 mV –1500 ... 1500 mV 100.0 % 0.0 ... 100.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5B.CHP Coding R226 R227 R2 (3) R231 R232 R233 R234 R235 Field Selection or range Factory setting (bold) Enter alarm threshold (as an absolute value) 150.0 °C –50.0 ... 150.
Instrument configuration Coding R236 R237 Field Selection of characteristic controller Selection of pulse length or pulse frequency Liquisys M CPM 223 / 253 Selection or range Factory setting (bold) dir = direct inv = inverted Display dir Info R236 Direction len = pulse length freq = pulse frequency curr = current output 2 len R237 Oper.Mode s R238 Enter pulse interval 10.0 s 0.5 ... 999.9 s 10.0 R238 PulsePer.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5B.CHP Coding R2 (4) R241 Field Selection or range Factory setting (bold) Configure cleaning function (timer) LC PV = Limit contactor pH/redox (1) LC °C = Limit contactor T (2) PID-controller (3) Timer (4) Clean = ChemoClean (5) Neutra controller (6) Switch function of R2 (4) off or on off on Display Info Timer R2 Sel.Type off Cleaning is performed using only one cleaning agent (usually water); see Fig. 5.14.
Instrument configuration Coding R253 Field Enter pre-rinse time Selection or range Factory setting (bold) Liquisys M CPM 223 / 253 Display Info s 20 s 0 ... 999 s 20 R253 Water is used for rinsing. PreRinse R254 R255 R256 R257 R258 R259 R2 (6) R261 Enter cleaning time 10 s 0 ... 999 s Enter rinse time 20 s 0 ... 999 s Enter number of repeat cycles 0 0 ... 5 Enter pause time 360 min 1 ... 7200 min Enter minimum pause time 120 min 1 ...
Liquisys M CPM 223 / 253 Instrument configuration PM253E5B.CHP Coding R262 R263 R264 R265 R266 Field Selection or range Factory setting (bold) Enter setpoint 1 (or 2) pH 6.00 pH –2.00 ... 16.00 Enter control gain Kp1 (or Kp2) 1.00 0.10 ... 20.00 Enter integral action time Tn (0.0 = no I comp.) 0.0 min 0.0 ... 999.9 min Enter derivate action time Tv (0.0 = no D comp.) 0.0 min 0.0 ... 999.
Instrument configuration 5.7 Coding Field Service Selection or range Factory setting (bold) Function group SERVICE S S1 S2 S3 Display SERVICE Selection of language Hold configuration S+C = during setup and calibrating CAL = during calibrating Setup = during configuring none = no hold off on ENG Enter hold dwell period 10 s 0 ... 999 s S1 Language S+C Auto S2 This field must be set once during start-up. Then you can exit S1 and continue. S = setup, C = calibration. HOLD aus Man.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5B.CHP Coding S9 S10 Field Reset of instrument (restore default values) Perform instrument test Selection or range Factory setting (bold) no Sens = sensor data Facty= factory settings Display Info no S9 S.Default no no displ = display test Facty= All data (except A1 and S1) are erased and reset to the factory settings! Sens = Last calibration will be erased and reset to the defaults.
Instrument configuration 5.8 Coding E+H Service Selection or range Factory setting (bold) Field Function group E+H SERVICE E E111 E121 E131 E141 Software version is displayed E112 E122 E132 E142 Hardware version is displayed E113 E123 E133 E143 Serial number is displayed E114 E124 E134 E144 Module name is displayed E+H = controller (1) = transmitter (2) = power unit (3) = relay (4) I1 SERV Contr E1 Select xx.xx xx.xx E111 E112 Cannot be edited.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5B.CHP Coding I2 Field Selection or range Factory setting Display Tag I2 Tag description Info Only for communication. @@@@@@@@ 5.10 Calibration This function group is used to calibrate the transmitter. Two types of calibration are possible: • Calibration by means of measurement in two calibration solutions with a known pH value.
Instrument configuration 5.10.1 Liquisys M CPM 223 / 253 Wet calibration For access to the CALIBRATION menu, please enter Code 22. Coding C ( 1) C11 C12 Field Selection or range Factory setting (bold) Info Only if A1 = pH. Function group CALIBRATION: pH calibration pH calibration Enter calibration temperature 25.0 °C –50.0 ... 150.0 °C Enter the pH value of the first buffer solution Display C CALIBRAT Buffer value of the last calibration pH 0.00 ... 14.00 °C 25.0 C11 MTC pH 7.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5B.CHP Coding C17 C18 Field Zero point (U_is) is displayed Calibration status is displayed Selection or range Factory setting (bold) Display Glass: pH 7.00 pH 5.00 ... 9.00 Antimony: pH 1.00 pH –1.00 ... 3.00 IsFET: present value –500...+500 mV 7.00 C17 o.k. E xxx Info pH The zero point of the IsFET sensor is displayed in mV. Zero o.k.
Instrument configuration Coding C25 Selection or range Factory setting (bold) Field yes no new Store calibration result? Liquisys M CPM 223 / 253 Display Info yes C25 Store If C24 = E xxx, then only no or new. If new, return to C. If yes/no, return to “Measurement”. The electrode can now be installed into the process again. C (3) Function group CALIBRATION: Calibration for redox % Calibration Redox % C CALIBRAT For calibration, a medium sample is drawn and place in two buckets.
Liquisys M CPM 223 / 253 Instrument configuration PM253E5B.CHP 5.10.2 Numeric calibration With the numeric calibration you can enter or correct slope and zero point manually. Coding Field Selection or range Factory setting (bold) Funktionsgruppe NUMERIC CALIBRATION N N1 N2 N3 N4 Enter reference temperature Enter slope Enter zero point Calibration status is displayed Display Info N NUMERIC 25 °C -50.0 ... 150.0 °C Glass 59.18 mV/pH 38.00 ... 65.00 mV/pH Antimony 59.18 mV/pH 25.00 ...
Instrument configuration 5.11 Liquisys M CPM 223 / 253 Offset The settings in the OFFSET function group can be used to calibrate the measurement to a reference measurement. This requires a linear shift of all values measured, i.e. the adjustment is determined for one measured value, and all others are calculated using the same offset. Measured value Note: Calibrated value The offset is automatically reset to zero after calibration. Current measured value Time t Fig. 5.17 Offset Coding OFFSET.
Liquisys M CPM 223 / 253 Interfaces PM253E06.CHP 6 Interfaces For instruments equipped with a communication interface, please refer to separate operating instructions BA 208C/07/en (HART®) or BA 209C/07/en (PROFIBUS®).
Maintenance and troubleshooting 7 Liquisys M CPM 223 / 253 Maintenance and troubleshooting Maintenance: • Maintenance means that all measures which will guarantee the safety of operation and reliability of the entire measuring system are taken in due time. Maintenance of CPM 223 / 253 includes: • Calibration (see chapter 5.9) • Cleaning of assembly and sensor • Checking of cables and connections Troubleshooting: Determination and elimination of the cause of the problem in the case of an operating fault.
Liquisys M CPM 223 / 253 Maintenance and troubleshooting PM253E07.CHP Error Fixed, incorrect measure value Incorrect temperature value Possible cause Check installation, remove protective cap – Air cushion in assembly Check assembly and installation – Short to ground on/in instrument Test measurement in insulated container, poss.
Maintenance and troubleshooting Error Possible cause Liquisys M CPM 223 / 253 Remedy – Instrument only has one current output Refer to nameplate for variant, change LSCH-x1 module if nec. – Instrument with Profibus PA PA instrument has no current output! Chemoclean function not available – No relay module (LSR1-x) or only LSR1-2 installed Install LSR1-4 module.
Liquisys M CPM 223 / 253 Maintenance and troubleshooting PM253E07.CHP 7.2 Troubleshooting using the error messages Display and select error messages by pressing the MINUS key. Contakt Error no. Display Fact E001 EEPROM memory error E002 Instrument not calibrated, calibration data invalid, no user data invalid (EEPROM error. Instrument software not suitable for hardware (controller).
Maintenance and troubleshooting Error no. Liquisys M CPM 223 / 253 Contakt Display Error current Measures Fact Fact User yes no — —* Stability requirement for calibration not fulfilled Repeat calibration and renew buffer solution; replace electrode if necessary, and check instrument and measuring cable with simulator. yes no — —* E045 Calibration aborted Repeat calibration and renew buffer solution; replace electrode if necessary, and check instrument and measuring cable with simulator.
Liquisys M CPM 223 / 253 Maintenance and troubleshooting PM253E07.CHP Contakt Error no.
Diagnosis and corrective maintenance 8 Liquisys M CPM 223 / 253 Diagnosis and corrective maintenance Diagnosis • Diagnosis refers to the identification of instrument malfunctions and defects. Corrective maintenance: • replacement of parts diagnosed to be defective; • testing of instrument and measuring system function; • restoration of complete functionality.
Liquisys M CPM 223 / 253 Diagnosis and corrective maintenance PM253E08.CHP Error Possible cause Tests and / or remedial measures Equipment, spare parts, personnel Display shows measured values but – value does not change and / or – instrument cannot be operated – Instrument or module not properly installed in instrument CPM 223: Reinstall module CPM 253: Reinstall display module Refer to assembly drawings in chapters 8.2.1 and 8.3.
Diagnosis and corrective maintenance Liquisys M CPM 223 / 253 8.2 Corrective maintenance of Liquisys M CPM 223 8.2.1 Exploded view 223EXPHE.CDR Pos. 422a Terminal for signal Inputs/outputs (outboard) Pos. 340 End frame Pos. 400 Special screw Pos. 422b Terminal for Pt 100, Alarm relay, power supply (inboard) Pos. 235 BNC socket with screening plate Pos. 435 BNC plug Pos. 230 pH transmitter MKP1 Pos. 10 / 20 Power supply unit LSGA / LSGD Pos. 40 – 80 Controller LSCH / LSCP End frame latches Pos.
Liquisys M CPM 223 / 253 Diagnosis and corrective maintenance PM253E08.CHP 8.2.2 Disassembly of CPM 223 • Consider potential effects on process when removing the instrument from service! • First pull off the terminal block (Pos. 422 b) on the rear side of the device, to make the device voltage-free. • First pull off the terminal blocks (Pos. 422 a and if necessary 430) on the rear side of the device, to make the device voltage-free. • Press the latches of the end frame (Pos.
Diagnosis and corrective maintenance 8.2.4 70 Liquisys M CPM 223 / 253 Spare parts for CPM 223 Pos.
Liquisys M CPM 223 / 253 Diagnosis and corrective maintenance PM253E08.CHP 8.3 Corrective maintenance Liquisys M CPM 253 8.3.1 Exploded view 253EXPHE.CDR Electronics box with relay module LSR1-x (bottom) and power supply unit Fuse is accessible with electronics box installed Pos. 10 Pos. 10 V AC Netzteil 100 – 230 Power supply unit 100 - 230 V AC Pos. 410 Display lid assy. Pos.3030/ Steckbrücke / jumper Pos. Fuse Sicherung Pos. 370 Front 230 V Pos.
Diagnosis and corrective maintenance 8.3.2 Disassembly of CPM 253 • Open and remove the connection compartment cover (Pos. 420). • Pull out the mains terminal (Pos. 470) to make the device voltage-free. • Open the display cover (Pos. 410) and loosen the ribbon cable (Pos. 310 / 320) on the side of the electronics box (Pos. 330). • Dismantling the controller (Pos. 40): Loosen screw (Pos. 450b) in the display lid. • Removal of electronics box (Pos. 330): Loosen screws (Pos.
Liquisys M CPM 223 / 253 Diagnosis and corrective maintenance PM253E08.CHP 8.3.4 Spare parts for CPM 253 Pos.
Diagnosis and corrective maintenance 8.3.5 Special case: replacement of central module Note: • After controller replacement all the editable data are reset to the factory settings. • The serial number can only be entered – and only once – in the case of a new module from the factory with serial number 0000! Make sure that your entry is correct before confirming with ENTER! Entry of an incorrect code will prevent the enhanced functions from being enabled.
Liquisys M CPM 223 / 253 Diagnosis and corrective maintenance PM253E08.CHP 8.6 Corrective maintenance of measuring system 8.6.1 pH/redox transmitter Cleaning the front panel To clean the front panel, only use standard cleaning agents. The front panel is resistant to the following cleaning agents (acc. to test methode DIN 42 115): • Isopropanol • Thinned acids (3 %) • Thinned alkalis (5 %) • Ester • Hydrocarbons • Ketone • Household cleaners 8.6.
Diagnosis and corrective maintenance 8.6.5 Liquisys M CPM 223 / 253 Connecting lines and junction boxes Check cables and connections for moisture. Moisture reduces the sensor slope. If the display can not be called up or is fixed on pH 7, please check the following components: • Sensor head • Sensor plug • pH measuring cable • Junction box if present • Extension cable Note: The sensor head and junction box can be cleaned and dried with a hair-drier.
Liquisys M CPM 223 / 253 Accessories PM253E09.CHP 9 Accessories Mounting accessories Connection accessories • Weather protection cover CYY 101 For mounting on field housing, for outdoor installation. Dimensions (H × W × D): 320 × 300 × 270 mm Material: Stainless steel SS 304 Order no.: CYY 101-A Technical information about all cable types: TI 118C/07/en Order no.: 50068526 • Universal upright post CYY 102 Square tube for mounting of field housing.
Accessories Liquisys M CPM 223 / 253 Assemblies Instrument upgrade • DipFit W CPA 111 Immersion assembly for pH and redox electrodes with bayonet system, applicable for up to 4 bar. Technical Information TI 112C/07/de Order no.: 50066450 (Order only possible with serial number of relevant device) • CleanFit W CPA 450 Manual change assembly for pH and redox electrodes, applicable for up to 4 bar. Technical information TI 183C/07/en Order no.
Liquisys M CPM 223 / 253 Technical data % °C Ω PM253E10.CHP 10 Technical data General specifications Input Manufacturer Endress+Hauser Product designation Liquisys M CPM 223 Liquisys M CPM 253 Measured variables pH, redox, temperature pH measurement Measuring range pH –2 ... 16 Display range pH –2 ... 16 with indication of measuring range violation pH offset range ±pH 2 Slope Glass: 38.00 ... 65.00 mV/pH (nominal 59.16 mV/pH) Antimon: 25.00 ... 65.00 mV/pH (nominal 59.
% °C Technical data Liquisys M CPM 223 / 253 Ω Output pH signal output Current range 0 / 4 ... 20 mA, galvanically separated; error current 2.4 / 22 mA Max. resolution 700 digits / mA Load max. 500 Ω Output range adjustable, min. ∆ 1 pH Isolation voltage max. 350 Vrms / 500 V DC Overvoltage protection (lightning protection) to EN 61000-4-5:1995 Redox signal output Current range 0 / 4 ... 20 mA, galvanically separated Max. resolution 700 digits / mA Load max.
Liquisys M CPM 223 / 253 Technical data % °C Ω PM253E10.CHP Accuracy pH measurement Reference temperature +25 °C Measured value resolution 0.01 pH Display deviation1 max. 0.5 % of measuring range Repeatability1 max. 0.2 % of measuring range 1 Measurement deviation pH signal output max. 0.75 % of measuring range Redox measurement Measured value resolution Display deviation 1 1 mV / 0.1 % max. 0.5 % of measuring range Repeatability1 max. 0.
Appendix Liquisys M CPM 223 / 253 11 Appendix Entry of absolute value Function group OFFSET V current measured value -2.00...16 pH -1500...1500 mV V1 0.0...100.0 % Enter reference temperature Function group NUMERIC CALIBRATION N 25 °C -20.0...150.0 °C N1 Calibration of 80% value (toxic sample) Function group CALIBRATION Current offset is displayed Calibration status is displayed 0.00 pH, -2.00...2.00 pH 0 mV, -120...120 mV 0.0 %, -50.0...50.0 % V2 o.k. E-- Enter slope Glass 59.18 mV/pH 38.
Liquisys M CPM 223 / 253 Appendix PM253E11.CHP Zero point is displayed Glass 7.00 pH 5.00...9.00 pH Antimon 1.00 pH -1.00...3.00 pH IsFET current value C17 –500...+500 mV Calibration status is displayed Store calibration results o.k. E-- yes; no; new C18 C19 Feedforward control =1 at 50% 0 … 100% Z7 Entry of x value (measured value) Entry of y value (current value) 0.00 pH; -2.00...16.00 pH 0 mV;-1500...1500 mV 0.0 %; 0.0...100.0 % O334 0.00 mA 0.00...20.
Appendix Liquisys M CPM 223 / 253 Function group P SCS alarm threshold SCS alarm for reference electrode (if A2=sym) SCS alarm measuring electrode CHECK P1 off; on off; on P2 50 kΩ 1.5...
Liquisys M CPM 223 / 253 Appendix PM253E11.CHP Set upper alarm threshold Set lower alarm threshold pH -2.00 pH -2 ... 16 P7 pH 16.00 Entry of derivative action time Tv (0.0 = no D component) Selection 0.0 min 0.0...999.9 min pH -2 ... 16 P8 Set max. perm. period for upper limit exceeded Set monitoring value 60 min 120 min pH 1.00 P9 R266 Number of repeat cycles 20 s 0...999 s 0 0...5 R256 R255 Selection of control characteristic R267 360 min 1...7200 min R257 R236 pH -2 ...
Index Liquisys M CPM 223 / 253 12 Index ! 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18, 21 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 9999 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18, 21 A A-Function group . . . . . . . . . . . . . . . . . . . . . 25 Access codes . . . . . . . . . . . . . . . . . . . . . . . . 21 Accessories . . . . . . . . . . . . . . . . . . . . . . 77, 78 Actuating signal outputs . . . . . . . . . . . . . . . .
Liquisys M CPM 223 / 253 Index PM253E12.CHP L LED indicator . . . . . . . . . . . . . . . . . . . . . . . . 17 Limit contactor . . . . . . . . . . . . . . . . . . . . 38, 43 Limit contactor for conductivity measured value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Limit contactor for temperature . . . . . . . 38, 44 Liquid crystal display . . . . . . . . . . . . . . . . . . 17 Locking the keypad . . . . . . . . . . . . . . . . 18, 21 M Maintenance and troubleshooting . . . . .
Index Liquisys M CPM 223 / 253 S S-Function group . . . . . . . . . . . . . . . . . . . . . 50 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4, 5 Safety features . . . . . . . . . . . . . . . . . . . . . . . . 5 safety notes. . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . 2 Scopeware . . . . . . . . . . . . . . . . . . . . . . . . . . 74 SCS electrode monitoring. . . . . . . . . . . . . . . 35 Selection of error. . . .
Declaration of contamination Dear customer, Because of legal determinations and for the safety of our employes and operating equipment we need this “Declaration of contamination” with your signature before your order can be handled. Please put the completely filled in declaration to the instrument and to the shipping documents in any case. Add also safety sheets and/or specific handling instructions if necessary.
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