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YOKOGAWA - Insatech

1. 20 RR G Set reference temp Use gt ENT keys to set value 25 21 T C 1 Set temp coef 1 Set temp coef 2 Adjust compensation factor if set to TC in section 5 2 5 Set value with gt ENT keys Adjust compensation factor if set to TC in section 5 2 5 Set value with gt ENT keys 2 1 per C 2 1 per C MATRX Select matrix Choose matrix if set to matrix comp in section 5 2 5 using gt ENT keys HCI cation pure water 0 80 C Ammonia pure water 0 80 C Morpholine pure water 0 80 C HCl 0 5 0 60 C NaOH 0 5 0 100 C User programmable matrix meca mo ds V TD Set temp range Enter 1st lowest matrix temp value Enter 2nd matrix temp value Enter 3rd matrix temp value Enter 4th matrix temp value Enter 5th highest matrix temp value L1xT1 L1xT2 LixTo Enter conductivity values for lowest concentration Value for T1 Value for T2 Value for T5 L2xT1 Concentration 2 Concentration 3 Similar to code 24 Similar to code 24 Concentration 4 Similar to code 24 Concentration 5 Similar to code 24 Not used IM 12D7B3 E H 5 14 Parameter setting 5 5 mA output functions Code 31 OUTPF For the SC202 the output may be chosen as linear to input or configured in a 21 point table to a particular linearization Enable the table setup in code 31 and
2. see text below Protective Protective earth earth e Resistance Classified Location Unclassified Location a TD OD DID Figure 1 Intrinsically safe design FM Class I Div 1 Group ABCD T4 for ambient temperature lt 55 C T6 for ambient temperature lt 40 C a a EXA SC202S analyser a HART compatible Suitable values are Voc or Vt lt 31 5 Volt DC Isc or It lt 100 mA Psc or Pt lt 1 2 Watt SENSOR S terminal 11 16 Max cable length 60 mtr Cable diam 3 to 12mm For electrical data see text below Protective earth Classified Location Unclassified Location Figure 2 e Electrical data of the EXA SC202S Supply circuit terminals and Sensor input circuit terminals 11 through 16 Maximum input voltage Vmax 31 5 V Maximum output voltage V 14 4 V Maximum input current Imax 100 mA Maximum output current 12 8 mA Maximum input power P 1 2 W Maximum allowed external capacitance C 103 nF Effective internal capacitance C 22 nF Maximum allowed external inductance L 200 mH Effective internal inductance L 22 UH e f Hand Held Terminal HHT is not connected to the power supply lines of the EXA SC202S see figure 1 Any FM Approved barrier or power supply may be used that meets the following requirements Voc OF Vi lt 31 5 V lse OF ls 100 MA O 2 22 nF Cae La 2 22 UH Leable If HHT is connected to the power supply lines of the EXA SC202S see
3. CABLE SX42 SX F SENSORS 11 TEMPERATURE 12 TEMPERATURE OUTER ELECTRODE OUTER ELECTRODE INNER ELECTRODE INNER ELECTRODE 7 SC4A SENSORS WITH INTEGRATED CABLE Figure 3 9 Sensor wiring diagrams 3 6 Sensor connection using junction box and extension cable Where a convenient installation is not possible using the standard cables between sensors and transmitter a junction box and extension cable may be used The Yokogawa BA10 junction box and the WF10 exten sion cable should be used These items are manufactured to a very high standard and are necessary to ensure that the specifications of the system can be met The total cable length should not exceed 60 metres e g 10 m fixed cable and 50 m extension cable NOTE Numbers 17 of both WF10 and BA10 do not need to be used IM 12D7B3 E H Installation and wiring 3 7 3 7 Other sensor systems To connect other sensor systems follow the general pattern of the terminal connections as listed below 11 and 12 Always used for temperature compensation resistor input 13 and 14 Normally used for the outer electrode 15 and 16 Used for inner electrode In case a 4 electrode measuring system will be used 14 and 16 should be used for the current electrodes Please ensure that shielded cabling will be used In figure 3 10 this is shown in a schematic way 2 electrode configuration 4 electrode configuration Figure 3 10 Connection diagram fo
4. MONTH DAY Clock setup Adjust to current date and time using gt and ENT keys ERASE Erase logbook Press YES to clear logbook data Display Genera Function Not used Function detail Default values 70 Load defaults Reset configuration to default values 71 79 Code Display Function Not used Function detail Default values Test and setup mode 80 TEST Test and setup Built in test functions as detailed in QIS and Service Manual IM 12D7B3 E H IM 12D7B3 E H Calibration 6 1 6 CALIBRATION 6 1 When is calibration necessary Calibration of conductivity resistivity instruments is normally not required since Yokogawa delivers a wide range of sensors which are factory calibrated traceable to NIST standards The cell constant values are normally indicated on the top of the sensor or on the integral cable These values can be entered directly in service code 03 section 5 3 1 If the cell has been subjected to abrasion erosion or coating calibration may be necessary In the next section two examples are given Alternatively calibration may be carried out with a simulator to check the electronics only NOTE During calibration the temperature compensation is still active This means that the readings are referred to the reference temperature as chosen in service code 20 section 5 3 4 default 25
5. USP 9 1 9 USP WATER PURITY MONITORING 9 1 What is USP USP stands for United States Pharmacopeia and it is responsible for issuing guidelines for the pharmaceuti cal industry Implementing these guidelines is highly recommended for companies wishing to market drugs in the US This means that USP is important for pharmaceutical companies worldwide USP recently issued USP recommendations for conductivity measurement This new USP aims at the replacement of 5 anti quated laboratory tests by simple conductivity analysis 9 2 What is conductivity measurement according to USP Life would be easy if the limits for the conductivity of injection water were set to be 1 3 uS cm at a refer ence temperature of 25 C However the committee PHRMA WQC who made the USP recommendations could not agree on a simple Sodium Chloride model for water quality determination Instead they chose a Chloride Ammonia conductivity pH model in water atmospherically equilibrated CO2 at 25 C The objective of the WQC was to find an easy way to establish the water quality so on line analysis at process temperature was a necessary requirement However if it is not possible to choose one tempera ture response model to work to then it is also not possible to choose one temperature compensation algo rithm We as a manufacturer of analytical equipment do not want to go into the details of whether the limiting conductivity values for water quality are bas
6. User s Model SC202G S Manual Conductivity and Resistivity EXA Transmitter YOKOGAWA 4 IM 12D7B3 E H 6th Edition TABLE OF CONTENTS PREFACE CONFIGURATION CHECKLIST FOR SC202 1 INTRODUCTION AND GENERAL DESCRIPTION ccccccecccceceeseeeeeeeeeeeeeeeeesereeeeneeeenenes 1 1 deced U Tol aN CEC rara tr E a RE BO OOO PO AE AAE NN Y DDO 1 1 12 ARICA aa 1 2 2 SCZOZ SPECIFICATION SS O Cd 2 1 ee a aati 2 1 22 OPS Una SOS CIC UNS is 2 2 225 Moderan ux COCO td iii dod dddo a Dd yd 2 3 2 4 Intrinsic safety common SO CCHICANONS msi a 2 3 2 SOME diagramm Or POWT SUDO nl dilo 2 4 3 INSTALLATION AND WIRING IA LL AAG A LL LLY estan eeeeeeseeaeeeeaeseeaeeetanestanesteaeseeaeeenaenetaess 3 1 Se Sta ANO tana Men SION Sto 3 1 SE Le Id E E gt IR YRR E E E E 3 1 SRZ S ale ME MNOS AAA E E A A 3 1 Dre DO n a aaa Hr a aaa Rd AR 3 3 Srs Gables Terminas and Gla ese pi 3 3 SAT O ESC Or a a HD RH HR 3 4 ss General DICCANMONS ra A HO HWRE RAN 3 4 3 3 2 Additional precautions for installations in hazardous areas Intrinsic Saf amp 3 4 3 3 3 Hazardous Area Non Incendive SC2O2S N cccccececsecccsseesseeecaseeecueeseueeseuseseaeesaaeessags 3 5 Sie RN AYA IAL ODO WES UDI adios 3 5 SG ncia O 3 5 3 4 2 Connection of the power SUD DIV arraiais aa Ed 3 5 SA Oe SWC Ing UCAS MMOS ON si as aa OO SP a 3 5 O cat tee carers ten eat cae RP 3 6 3 6 Sensor connection usin
7. Switching the instrument on After all connections are made and checked the power can be switched on from the distributor Observe the correct activation of the instrument at the display If for any reason the display does not indicate a value consult the trouble shooting section Fig 3 7 Connection diagrams IM 12D7B3 E H 3 6 Installation and wiring 3 5 Sensor wiring Refer to figure 3 9 which includes drawings that outline sensor wiring The EXA SC202 can be used with a wide range of commercially available sensor types if provided with shielded cables both from Yokogawa and other manufacturers The sensor systems from Yokogawa fall into two categories the ones that use fixed cables and the ones with separate cables To connect sensors with fixed cables simply match the terminal numbers in the instrument with the identifi cation numbers on the cable ends The separate sensors and the WU40 LHhh cables are also numbered but the numbers do not always match with the terminal numbers in the instrument Figure 3 9 indicates how to connect the different sensor types CONDUCTIVITY RESISTIVITY TRANSMITTER 11 TEMPERATURE 11 TEMPERATURE 12 TEMPERATURE 12 TEMPERATURE O 13 CELL 13 OUTER ELECTRODE 14 CELL 14 OUTER ELECTRODE LP 15 CELL A 15 INNER ELECTRODE O 16 CELL 16 INNER ELECTRODE SEPARATE SENSORS WITH WU40 LH
8. Yokogawa Ges m b H Central East Europe Franzosengraben 1 A 1030 WIEN Tel 43 1 206 340 Fax 43 1 206 34 800 YOKOGAWA 4 IM 12D7B3 E H BELGIUM Yokogawa Belgium N V S A Minervastraat 16 1930 ZAVENTEM Tel 32 2 719 55 11 Fax 32 2 725 34 99 NORTHERN EUROPE Yokogawa Nordic A B Finlandsgatan 52 2fl SE 164 74 Kista STOCKHOLM Tel 46 8 477 1900 Fax 46 8 477 1999 FRANCE Yokogawa France S A V lizy Valley 18 20 Rue Grange Dame Rose 78140 VELIZY VILLACOUBLAY Tel 33 1 39 26 10 00 Fax 33 1 39 26 10 30 GERMANY Yokogawa Deutschland GmbH Berliner Strasse 101 103 D 40880 RATINGEN Tel 49 2102 4983 0 Fax 49 2102 4983 22 Subject to change without notice Copyright HUNGARY Yokogawa Hungaria Ltd Alkotas Center 39 C 1123 BUDAPEST Tel 36 1 355 3938 Fax 36 1 355 3897 ITALY Yokogawa Italia S r l Vicolo D Pantaleoni 4 20161 MILANO Tel 39 02 66 24 11 Fax 39 02 645 57 02 SPAIN PORTUGAL Yokogawa Iberia S A C Francisco Remiro N 2 Edif H 28028 MADRID Tel 34 91 724 20 80 Fax 34 91 355 31 40 UNITED KINGDOM Yokogawa United Kingdom Ltd Stuart Road Manor Park RUNCORN Cheshire WA7 1TR Tel 44 1 928 597100 Fax 44 1 928 597101 AUSTRALIA Yokogawa Australia Pty Ltd Private mail bag 24 Centre Court D3 25 27 Paul Street North NORTH RYDE N S W 2113 Tel 61 2 805 0699 Fax 61 2 888 1844 SINGAPORE Yokogawa Engineering Asia Pte Ltd 11 Tampines St
9. configure the table in code 35 Code 32 BURN Diagnostic error messages can signal a problem by sending the output signals upscale or downscale 22 mA or 3 9 mA This is called upscale or downscale burnout from the analogy with thermocouple failure signaling of a burned out or open circuit sensor The pulse burnout setting gives a 22 mA signal for the first 30 seconds of an alarm condition After the pulse the signal returns to normal This allows a latching alarm unit to record the error In the case of the EXA the diag nostics are extensive and cover the whole range of possible sensor faults Code 35 TABLE The table function allows the configuration of an output curve by 21 steps intervals of 5 The following example shows how the table may be configured to linearize the output with a mA curve CONDUCTIVITY S cm A HSO mS cm Default Service Service mS cm code 55 code 35 0 00 0 1 25 60 2 50 3 75 5 00 6 25 7 50 8 75 10 00 11 25 12 50 13 75 15 00 16 25 17 50 18 75 20 00 21 25 22 50 23 75 25 00 Output in CONCENTRATION Output in Fig 5 1 Linearization of output Table 5 3 Example 0 25 Sulfuric acid Concentration Output function is done in de following order e Set OUTPF Service Code 31 to table e Set the Concentration range in Service Code 55 e Set table values 9ooutput and Conductivity va
10. sensor cable up to 20m Up to 60m total using BA10 junction box and WF10 extension cable Freguency read pulse position and reference voltage are dynamically optimized 0 000 uS cm to 1999 mS cm at 25 C 77 F reference temperature 0 2 uS x C at process temperature underrange 0 000 uS cm 500 mS x C at process temperature overrange 550 mS x O 0 000 kQ 999 MO C at 25 C 77 F reference temperature 0 002 kQ C at process temperature underrange 0 000 kQ x cm 5 MQ C at process temperature overrange 999 MQ x cm O 500 F O 400 F 10 250 F 02907 IA AAA min 0 01uS cm max 1999 mS cm max 90 zero suppression min 0 001kQxcm max 999 MQ x cm max 90 zero suppression Dependent on temp sensor type min max 25 C 50 F 250 C 200 F 25 C 50 F 200 C 400 F 25 C 50 F 100 C 200 F The instrument is user programmable for linear or non linear conductivity ranges Isolated output of 4 20 mA DC Maximum load 425 Q Burn up 22 mA or Burn down 3 9 mA or pulse of 22mA to signal failure See Fig 2 1 and 2 2 Automatic for temperature ranges mentioned under C inputs programmable from O to 100 C or 30 210 F default 25 C F Temperature compensation Reference temp G Compensation algorithm NaCl T C According IEC 746 3 NaCl tables default Two in
11. 1 to simulate 25 C 1097 3 Q for Pt1000 Before starting the actual test the SC202 and peripheral testing eguipment has to be connected to the power supply for at least 5 minutes to assure the instrument is warmed up properly 24 Volts DC Supply DECADE BOX 1 Temperature RESISTANCE OECADE BOX DECADE BOX 2 Conductivity HIGH RANGE RESISTANCE DECADE BOX Figure 1 Connection diagram for the overall accuracy test The tolerances specified relate to the performance of the SC202 with calibrated purpose built test equipment under controlled test conditions humidity ambient temperature Note that these accuracy s are only reproducible when performed with similar test eguipment under similar test conditions Under other conditions the accuracy and linearity of the test equipment will be different The display may show values which differ as much as 196 from those measured under controlled conditions 5 Accuracy test mA output circuit Our automated testing facility checks the output accuracy of the instrument with simulated mA output values IM 12D7B3 E H Test Certificate 12 3 IM 12D7B3 E H EUROPEAN HEADQUARTERS Yokogawa Europe B V Databankweg 20 3821 AL AMERSFOORT The Netherlands Tel 31 33 4641 611 Fax 31 33 4641 610 E mail info yokogawa nl www yokogawa europe com THE NETHERLANDS Yokogawa Nederland B V Hoofdveste 11 3992 DH HOUTEN Tel 31 30 635 77 77 Fax 31 30 635 77 70 AUSTRIA
12. 127 ms 25 53 mS 101 mS 145 mS 185 mS 223 mS 50 76 mS 141 mS 207 mS 268 mS 319 mS Lo 97 5 mS 182 mS 264 mS 339 mS 408 mS 100 119 mS 223 mS 318 mS 410 mS 495 mS IM 12D7B3 E H Appendix 11 3 11 4 Sensor Selection 11 4 1 General The inputs of the EXA transmitter are freely programmable for ease of installation Standard 2 electrode type sensors with a cell constant of 0 100 cm and a Pt1000 temperature sensor need no special programming The EXA indicates a fault with a signal in the display field if there is a mismatch of sensors in the connec tion 11 4 2 Sensor selection The EXA SC202 is pre programmed to accept standard 2 electrode sensors with a Pt1000 temperature sensor The EXA is universally compatible with all 2 and 4 electrode type of sensors with a cell constant within the range of 0 008 cm to 50 0 cm 11 4 3 Selecting a temperature sensor The EXA SC202 reaches its highest accuracy when used with a Pt1000 temperature sensor This may influ ence the choice of the conductivity resistivity sensor as in most cases the temperature sensor is integrated in the conductivity resistivity sensor 11 5 Setup for other functions e Current Outputs Transmission signals for the measured parameters can be set up in service codes 30 39 e Diagnostic checks Polarization check and checks on the calibrated cell constant and the adjusted Temperature Coefficient are included in the EXA SC202 e Communications The
13. Check model code sensor Check connections and cable Temperature sensor shorted Pt1000 Pt100 Ni100 T lt 20 C or 0 F 8k55 PB36 T gt 120 C or 250 F Process temperature too high or too low Wrong sensor programmed Incorrect wiring Check process Check model code sensor Check connections and cable Air set impossible Too high zero due to cable capacitance Replace cable EEPROM write failure Fault in electronics Try again if unsuccessful contact Yokogawa USP limit exceeded Poor water quality Check ion exchangers Cable resistance influence to temperature exceeds 15 C Cable resistance too high Corroded contacts Wrong sensor programmed Check cable Clean and reterminate Reprogram Output span too small Table values make no sense Incorrect configuration by user Wrong data programmed Reprogram Reprogram Programmed values outside acceptable limits Incorrect configuration by user Reprogram All programmed data lost Fault in electronics Very severe interference Contact Yokogawa Checksum error IM 12D7B3 E H Software problem Contact Yokogawa 11 8 Device Description DD menu structure The Device Description DD is available from Yokogawa or the HART foundation An example is shown below of the ON LINE menu structure This manual makes no attempt to explain the operation of the Hand Held communicator HHC For detailed operati
14. Limitations for this setting are O to 100 C If T UNIT in code 11 is set to F default value is 77 F and the limitations are 32 212 F Code 21 1 C 1 1 C 2 In addition to the procedure described in section 5 2 4 it is possible to adjust the compensation factor directly If the compensation factor of the sample liquid is known from laboratory experiments or has been previously determined it can be introduced here Adjust the value between 0 00 to 3 50 per C In combination with reference temperature setting in code 20 a linear compensation function is obtained suit able for all kinds of chemical solutions Code 22 MATRX The EXA is equipped with a matrix type algorithm for accurate temperature com pensation in various applications Select the range as close as possible to the actual temperature concentration range The EXA will compensate by interpola tion and extrapolation Consequently there is no need for a 100 coverage If 9 is selected the temperature compensation range for the adjustable matrix must be configured in code 23 Next the specific conductivity values at the differ ent temperatures must be entered in codes 24 to 28 Code 23 11 T2 T3 Set the matrix compensation range It is not necessary to enter equal 1484 T5 C temperature steps but the values should increase from T1 to T5 otherwise the entrance will be refused Example O 10 30 60 and 100 C are valid values for the T1 T5 The minimum span for t
15. Options U Pipe and wall mounting hardware K1542KW SGT Stainless steel tag plate K1544ST H Hood for sun protection K1542KG Fig 10 1 Exploded view Spare parts 10 1 IM 12D7B3 E H IM 12D7B3 E H Appendix 11 1 11 APPENDIX 11 1 User setting for non linear output table code 31and 35 Output signal value Output 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 11 2 User entered matrix data code 23 to 28 Medium T1 data T2 data T3 data T4 data T5 data Code 23 Temperature Code 24 Solution 1 Code 25 Solution 2 Code 26 Solution 3 Code 27 Solution 4 Code 28 Solution 5 Medium T1 data T2 data T3 data T4 data T5 data Code 23 Temperature Code 24 Solution 1 Code 25 Solution 2 Code 26 Solution 3 Code 27 Solution 4 Code 28 Solution 5 IM 12D7B3 E H 11 2 Appendix 11 3 Matrix data table user selectable in code 22 Matrix Solution Temp C Data 1 Data 2 Data 3 Data 4 Data 5 HCL p cation O ppb 4 ppb 10 ppb 20 ppb 100ppb selection 1 0 0 0116 uS 0 0228 us 0 0472 us 0 0911uS 0 450 us 10 0 0230 us 0 0352 us 0 0631 us 0 116 uS 0 565 uS 20 0 0419 us 0 0550 us 0 0844 uS 0 145 uS 0 677 us 30 0 0710 us 0 085 uS 0 115 uS 0 179 us 0 787 US 40 0 1135 uS 0 129 us 0 159 uS 0 225 us 0 897 uS 50 0 173 uS 0 190 u
16. code 32 Soft fail gives a flashing FAIL flag in the display A good example is the dry sensor for a soft fail Limits can be set for shorted and open measurement Dependent on the main parameter chosen in code 01 the EXA will ask for a resistivity or conductivity value to be set value to be set is the uncompensated conductivity resistivity value For some applications the measured parameter values may be more or less lin ear to concentration For such applications it is not needed to enter an output table but O and 100 concentration values directly can be set The display resolution is default set to autoranging for conductivity reading If a fixed display reading is needed a choice can be made out of 7 possibilities For resistivity the default reading is fixed to xx xx MQ cm Automatic checking for compliance with the water purity standard set in USP United States Pharmacopeia For more detailed description see chapter 9 Code Display Function Function detail Parameter setting 5 17 Default values User interface 50 ET Auto return Auto return to measuring mode Off Auto return to measuring mode On 51 Not used 52 Passcode Note O 9 where 1 111 2 333 3 777 4 888 5 123 6 957 7 331 8 546 9 847 Maintenance passcode Off Maintenance passcode On Commissioning passcode Off Commissioning passcode On Service passcode Off Service passcode On Err 01 Err 05 Er
17. eS DS Figure 1 Intrinsically safe design FM Class Div 2 Group ABCD T4 for ambient temperature lt 55 C T6 for ambient temperature lt 40 C EXA SC202S analyser SENSOR S Voc lt 31 5 VDC terminal 11 16 Max cable length 60 mtr FM approved power supply Cable diam 3 to 12mm For electrical data see text below Protective earth Classified Location Unclassified Location Figure 2 e Electrical data of the EXA SC202S Supply circuit terminals and Sensor input circuit terminals 11 through 16 Maximum input voltage Vmax 31 5 V Maximum output voltage V 14 4 V Maximum input power P 1 2 W Maximum output current 12 8 mA Effective internal capacitance C 22 nF Maximum allowed external capacitance Ca 1 4 UF Effective internal inductance L 22 UH Maximum allowed external inductance L 900 mH e The Hand Held Terminal must be FM Approved in case it is used in the classified location When installing this equipment follow the manufacturers installation drawing Installation shall be in accordance with Article 501 4 B of the National Electrical Code ANSI NFPA 79 Nonincendive field wiring may be installed in accordance with Article 501 4 B 3 e Grounding shall be in accordance with Article 250 of the National Electrical code WARNING Substitution of components may impair suitability for Division 2 Do not remove or replace while circuit is live unless ar
18. from the commissioning level NOTE All three levels may be separately protected by a password See Service Code 52 in chapter 5 Service Code table for details on setting passwords IM 12D7B3 E H 4 1 Operation Output hold flag Fail flag Menu pointer flags Units oU a ri rf LY Commissioning F J JL j J function menu OUTPUT SET HOLD Message display TEMP SERVICE Key prompt flags Commissioning x mode access key Selection keys YES Accept setting NO Change setting Measure Maintenance Adjustment keys ED CD OS mode key gt Choose digit to EXASEZO S YOKOGAWA adjust Adjust digit Broken line indicates area ENT Confirm change that can be seen through front cover Figure 4 1 SC202 operator interface 4 2 Explanation of operating keys MODE key This key toggles between the measuring and maintenance modes Press once to obtain access to the maintenance function menu CALIB DISP 1 DISP 2 Only when second temp compensation enabled HOLD only when enabled Press again to return to the measuring mode press twice when hold is activated YES NO keys These are used to select choices from the menu YES is used to accept a menu selection NO is used to reject a selection or to move ahead to the next option DATA ENTRY keys gt ENT gt is used as a cursor key Each press on thi
19. or LO output on fail fixed T C matrix Fail if USP limits are exceeded HOLD last value or fixed value adjustment 15 C adjustment 1 uS cm hard or soft choices except E13 inactive password for different levels linearization of output w9o on LCD reference on page 5 8 5 9 Do 5 10 5 11 hen 0 10 8 5 8 5 9 5 10 5 11 5 19 5 14 5 15 5 12 5 13 5 5 9 192517 5 17 5 3 5 4 5 11 5 9 5 17 5 9 5 17 5 14 5 17 menu SC 01 range SC 11 SC 03 SC 02 SC 10 SC 60 62 SC 32 SC 20 28 temp SC 57 hold SC 50 SC 12 SC 04 SC 53 SC 05 SC 52 SC 31 35 55 Introduction 1 1 1 INTRODUCTION AND GENERAL DESCRIPTION The Yokogawa EXA 202 is a 2 wire transmitter designed for industrial process monitoring measurement and control applications This user s manual contains the information needed to install set up operate and maintain the unit correctly This manual also includes a basic troubleshooting guide to answer typical user questions Yokogawa can not be responsible for the performance of the EXA analyzer if these instructions are not followed 1 1 Instrument check Upon delivery unpack the instrument carefully and inspect it to ensure that it was not damaged during ship ment If damage is found retain the original packing materials including the outer box and then immedi ately notify the carrier and the relevant Yokogawa sales office Make sure the model numb
20. 0 56 ore COMM off write prot ADDR DISP O Auto ranging SC xx xxMQ cm RES Ea UP HOUR ERASE General LOAD Test and setup mode IM 12D7B3 E H 11 6 Appendix 11 7 Error codes Error description Possible cause Suggested remedy Polarization detected on cell Sensor surface fouled Conductivity too high Clean sensor Replace sensor Temperature coefficient out of limits 0 3 590 9C Incorrect field calibration of TC Re adjust Set calculated TC Calibration out of limits Matrix compensation error Calibrated value differs more than 20 of nominal value programmed in code 08 Wrong data entered in 5x5 matrix Check for correct sensor Check for correct unit uS cm mS cm kQ cm or MQ cm Repeat calibration Re program Conductivity too high or resistivity too low Limits set in service code 54 Conductivity too low or resistivity too high Limits set in service code 54 Incorrect wiring Internal leakage of sensor Defective cable Dry sensor Incorrect wiring Defective cable Check wiring 3 6 Replace sensor Replace cable Immerse sensor Check wiring 3 6 Replace cable Temperature sensor open Pt1000 T gt 250 C or 500 F Pt100 Ni100 T gt 200 C or 400 F 8k55 T lt 10 C or 10 F PB36 T lt 20 C or O F Process temperature too high or too low Wrong sensor programmed Incorrect wiring Check process
21. 000 G kQ cm if G US cm 1000 1 99 mS cm 3000 5 69 mS cm 5000 9 48 mS cm Example 10000 17 6 mS cm 0 001 weight 30000 48 6 mS cm R 1000 21 4 46 7 kQ cm 50000 81 0 mS cm 100000 140 mS cm IM 12D7B3 E H 6 2 Calibration 6 2 Calibration procedure Press the MODE key The legend CALIB appears and the YES NO key prompt flags flash EXXASEEDE VYOKOGAWAS uS cm Li a i N Oo ym La y vm LI d gt E Ey Ey y sal x Io Put the sensor in standard solution Press YES IL _l Wem Set the value LHL Y pM using the gt a ENT key J Select the flashing digit with the gt key PAL TY Increase its value by pressing the akey When the correct value is displayed press ENT to enter the change f After briefing displaying WAIT gt OI A the CAL END message appears i HLE The calibration is now complete Put the sensor back in the process and press YES The cell constant is automatically updated after the calibration and the new value can be read on the display as described in section 4 5 The calculation is as follows Cell constant in cm Conductivity of calibration solution in mS cm x Cell resistance in kOhm Comparing this calibrated cell constant with the initial nominal cell constant in service code 03 gives a good indication of the stabilit
22. 5 C CSA certified EXA SC202S analyzer a 4074 Safety barrier or power supply with Rint 300 Ohm Hart compatible Suitable values are Vmax 31 5 Volts DC Imax 100 mA D EE O Z LLl 0 24 volts DC Nominal Supply Voltage terminal 11 16 pS a For electrical data O O see text below Prote ctive E aah Protective earth Load Resistance Hazardous area Safe area Figure 1 Intrinsically safe design CSA Ex ia Class I Div 1 Group ABCD T4 for ambient temp lt 55 C CSA certified T6 for ambient temp lt 40 C Power supply EXA SC202S analyzer Hart compatible Suitable values are Vmax 31 5 Volts DC Imax 100 mA Pmax 1 2 Watt SENSOR S o Ui q o For electrical data see text below Protective earth Hazardous area Safe area e a Figure 2 e Sensor is a thermocouples RTD s passive resistive switch devices or is CSA entity approved and meet connection requirements e Electrical data of the EXA SC202S Supply and output circuit terminals and Maximum input voltage Vmax 31 5 V Maximum input current Imax 100 mA Maximum input power Pmax 1 2 W Effective internal capacitance C 22 nF Effective internal inductance L 22 UH Sensor input circuit terminals 11 through 16 Maximum output voltage Voc 14 4 V Maximum output current Is 12 8 mA Maximum allowed external capacitance C 103 nF Maxi
23. 5 Replace cable Temperature sensor open Pt1000 T gt 250 C or 5007 F Pt100 Ni100 T gt 200 C or 400 F 8k55 T lt 10 C or 10 F PB36 T lt 20 C or 0 F Temperature sensor shorted Pt1000 Pt100 Ni100 T lt 20 C or O F 8k55 PB36 T gt 120 C or 250 F Process temperature too high or too low Wrong sensor programmed Incorrect wiring Process temperature too high or too low Wrong sensor programmed Incorrect wiring Check process Check model code sensor Check connections and cable Check process Check model code sensor Check connections and cable Air set impossible Too high zero due to cable capacitance Replace cable EEPROM write failure Fault in electronics Try again if unsuccessful contact Yokogawa USP limit exceeded Poor water quality Check ion exchangers Cable resistance influence to temperature exceeds 15 C Cable resistance too high Corroded contacts Wrong sensor programmed Check cable Clean and reterminate Reprogram Output span too small Incorrect configuration by user Reprogram Table values make no sense Wrong data programmed Reprogram Programmed values outside acceptable limits Incorrect configuration by user Reprogram All programmed data lost Fault in electronics Very severe interference Contact Yokogawa Checksum error IM 12D7B3 E H Software problem Contact Yokogawa
24. C Calibration is normally carried out by measuring a solution with a Known conductivity value at a Known temperature The measured value is adjusted in the calibration mode On the next pages the handling sequence for this action is visualized Calibration solutions can be made up in a laboratory An amount of salt is dissolved in water to give a precise concentration with the temperature stabilized to the adjusted reference temperature of the instrument default 25 C The conductivity of the solution is taken from litera ture tables or the table on this page Alternatively the instrument may be calibrated in an unspecified solution against a standard instrument Care should be taken to make a measurement at the reference temperature since differences in the type of tem perature compensation of the instrument may cause an error NOTE The standard instrument used as a reference must be accurate and based on an identical temperature compensation algorithm Therefore the Model SC82 Personal Conductivity Meter of Yokogawa is recom mended Typical calibration solutions The table shows some typical conductivity values for sodium chloride NaCl solutions which can be made up in a laboratory Table 6 1 NaCl values at 25 C Conductivity 21 4 uS cm 64 0 uS cm NOTE 106 uS cm For resistivity measurement the standard resistivity 210 uS cm units of the calibration solution can be calculated as 300 617 uS om follows 500 1 03 mS cm R 1
25. EXA can be adjusted for any one of five different types of temperature sensors To record such configuration adjustments write changes in the space provided in Chapter 11 of this manual Because the EXA is suitable for use as a monitor a controller or an alarm instrument program configuration possibilities are numerous Details provided in this user s manual are sufficient to operate the EXA with all Yokogawa sensor systems and a wide range of third party commercially available probes For best results read this manual in conjunction with the corresponding sensor user s manual Yokogawa designed and built the EXA to meet the CE regulatory standards The unit meets or exceeds stringent requirements of EN 55082 2 EN55022 Class A without compromise to assure the user of continued accurate performance in even the most demanding industrial installations IM 12D7B3 E H 2 GENERAL SPECIFICATIONS 2 1 Specifications A Input specifications B Detection method C Input ranges Conductivity Minimum Maximum Resistivity Minimum Maximum Temperature Pt1000 Pt100 and Ni100 8K55 NTC Pb36 NTC D Output Span Conductivity Resistivity Temperature Sensor type Pt1000 Pt100 Ni100 Pb36 NTC 8k55 NTC E Transmission Signal 20 to 250 C 20 to 200 C 10 to 120 C 20 to 120 C Two or four electrodes measurement with sguare wave excitation Cell con stants from 0 008 to 50 cm 1 WU40
26. L Z or U TE empera ia T gt THL uS cm IRJ amp Og neu Software release T number y NO DISP 1 LI MT gt DISP 2 g Fl rem gt See Calibration TaS LVI menu Chapter 6 Temperature compensation Lf N q m r AIE ssn Nall m tele J No raked a uma gt wo ba YES gt LOL scm ww WI esco Yap p s gt dJHHO gwme ye compensated NO Y value Process p NE WE tempe NENE rature 1 en YES See Hold Wn a UN gt Rd Chapter 5 1 Sto mem Uncompensated if USP is enabled in jp serv code 57 DDD Jo Mg DDD _ inol YES NO pe DISPLAY outpu na fe TTE upt T L L uS cm YES NO MODE YES NO GB e gt Co OC i gt A ENT Press YES to fix 5 gt CD O the selected second EXASscE20 gt 2 YOKOGAWAS IM 12D7B3 E H Parameter setting 5 1 5 PARAMETER SETTING 5 1 Maintenance mode 5 1 1 Introduction Standard operation of the EXA instrument involves use of the Maintenance or operating mode to set up some of the parameters Access to the maintenance mode is available via the six keys that can be pressed through the flexible win dow in the instrument front cover Press the MODE key once to enter this dialog mode Note that at this stage the user will be prompted for a passcode where t
27. P Passcode Maintenance Commissioning Service IM 12D7B3 E H 11 8 Appendix 11 9 Field Change Order 11 9 1 Changes made by software release 1 1 e PH201 communication added for Japanese market 11 9 2 Changes made by software release 1 1 e E20 is cleared after the programmed data was recovered 11 9 3 Changes made by software release 2 1 e Communication is default set to enabled write enabled IM 12D7B3 E H Test Certificate 12 1 12 1 TEST CERTIFICATE Test EXA Series Certificate Model SC202 Inductive Conductivity Transmitter 1 Introduction This inspection procedure applies to the model SC202 Conductivity transmitter There is a serial num ber unique to the instrument which is stored in non volatile memory Each time the transmitter is pow ered up the serial number is shown in the display An example is shown below for details see the Users manual 0 5 y Unique Number F70 00 too Line Number ATE automatic test equipment no Month code Year code 2 General Inspection Final testing begins with a visual inspection of the unit to ensure that all the relevant parts are present and correctly fitted 3 Safety Test The minus and the external ground terminal of the housing are connected to a Voltage generator 100 VDC The measured impedance value should be over 9 5 MQ Terminal 14 and the external ground terminal of the housing are connected to a Voltage generator 500 VAC RMS for 1 minute The leaka
28. S 0 220 uS 0 286 uS 1 008 us 60 0 251 us 0 271 us 0 302 uS 0 366 uS 1 123 uS 70 0 350 uS 0 375 us 0 406 us 0 469 uS 1 244 us 80 0 471 uS 0 502 uS 0 533 uS 0 595 uS 1 373 uS Ammonia p O ppb 2 ppb 5 ppb 10 ppb 50 ppb selection 2 0 0 0116 us 0 0229 us 0 0502 us 0 0966uS 0 423 uS 10 0 0230 us 0 0337 us 0 0651 us 0 122 uS 0 535 HS 20 0 0419 uS 0 0512 uS 0 0842 us 0 150 uS 0 648 uS 30 0 0710 us 0 0788 US 0 111 uS 0 181 uS 0 758 us 40 0 113 uS 0 120 uS 0 149 us 0 221 us 0 866 US 50 0 173 us 0 178 us 0 203 us 0 273 us 0 974 us 60 0 251 uS 0 256 uS 0 278 us 0 344 us 1 090 uS 70 0 350 uS 0 356 uS 0 377 US 0 439 us 1 225 us 80 0 471 us 0 479 us 0 501 uS 0 563 uS 1 393 us Morpholine p O ppb 20 ppb 50 ppb 100 ppb 500 ppb selection 3 O 0 0116 us 0 0272 us 0 0565 uS 0 0963uS 0 288 US 10 0 0230 us 0 0402 us 0 0807 us 0 139 uS 0 431 uS 20 0 0419 us 0 0584 us 0 108 uS 0 185 uS 0 592 US 30 0 0710 us 0 0851 us 0 140 uS 0 235 uS 0 763 uS 40 0 113 uS 0 124 uS 0 181 uS 0 289 uS 0 938 uS 50 0 173 uS 0 181 uS 0 234 uS 0 351 uS 1 12 uS 60 0 251 uS 0 257 us 0 306 uS 0 427 uS 1 31 uS 70 0 350 uS 0 357 US 0 403 uS 0 526 us 1 52 uS 80 0 471 uS 0 481 uS 0 528 uS 0 654 uS 1 77 US Hydrochloric Acid 1 2 3 4 5 selection 4 O 65 mS 125 mS 179 mS 229 mS 273 mS 15 91 mS 173 mS 248 mS 317 mS 379 mS 30 114 mS 217 mS 313 mS 401 mS 477 mS 45 135 mS 260 mS 370 mS 474 mS 565 mS 60 159 mS 301 mS 430 mS 549 mS 666 mS Sodium Hydroxide 1 2 3 4 5 selection 5 0 31 ms 61 ms 86 ms 105 mS
29. aut YF A tat HY RE EEAS D 22 a To rand O A O ON D 22 OSG ALGRA HON iniaa ene ee ee a NO YY 6 1 6 1 When is calibration NECESSANY ccccssccseccseeceecceeceeeceseneeesesseeeaeeeaeeseesseeeeeeeesseesaeeeeeseetageaeetgas 6 1 O 2 Gala ton OKO SCN Stan 6 2 6 9 Calbraton WIth ROLD GG Estudei ers dn iii 6 3 Ts MAINTENANCE cari a ino 7 1 7 1 Periodic maintenance tor the EXA 202 transmitter eI A ada 7 2 Periodic maintenance for the sensor System VFF YFAFEEAFEE ARE rea ELLEN LE eram re rrenan anna 7 1 8 IROUBLESHOOTING uu a E a 8 1 o ls DADOSO O asia saree der asia 8 2 o Of llme callbr auon CNECKS satan A 8 2 cl OnalNelmMpPedance neck dado 8 2 9 USP Water Purity Monitonng sia ean ent aden nuanua uraan eae ones 9 1 O MAIS SP ee ee en eee eer eo 9 1 9 2 What is conductivity measurement according to USP amante dla 9 1 IS IS WANS SO O oat sink cite Sake adia o ii ia 9 1 OA SEMIN o 20210 US a Ecco 9 2 TOGSPARE PARTS it eS 10 1 TO Remiza parts lan o DG To CLO y A 10 1 11 APRENDI a re A Rd Y Dr ee eee O eet 11 1 11 1 User setting for non linear output table code 31 and 3D cccocccnccnnncnnononononnnonnnnononenenonnnncnons 11 1 11 2 User entered matrix data code 29 tO 28 cocccoocconcncncncononononcnnnnonononononanconononcnnonnnononenenenncnnns 11 1 a Matrix data table user Selectable mn code 22 00 Y OF a pa 11 2 14b Sensor selec RG OODD od 11 3 ye a NET Ala nner tne oo Pmuo O FFR 11 3 ee Sen
30. bracket on a horizontal or vertical pipe maximum pipe diameter 50 mm min 203 min 8 0 92 3 6 115 4 5 ox 04 0 16 SPACING PANEL 1 2 INPUT CUT OUT DIMENSION CUT OUT DIMENSIONS Fig 3 1 Housing dimensions and layout of Fig 3 2 Panel mounting diagram glands IM 12D7B3 E H 3 2 Installation and wiring wall mounting pipe mounting pipe mounting vertical horizontal SUL L 92 3 6 115 4 5 2 ND pipe OPTION U Universal pipe wall mounting Figure 3 3 Wall and pipe mounting diagram MT gt Figure 3 4 Internal view of EXA wiring compartment IM 12D7B3 E H Installation and wiring 3 3 3 2 Preparation Refer to figure 3 4 The power output connections and the sensor connections should be made in accor dance with the diagram on page 3 6 The terminals are of a plug in style for ease of mounting To open the EXA 202 for wiring 1 o Ol Loosen the four frontplate screws and remove the cover 2 The terminal strip is now visible oF 4 Connect the sensor input using the gland on the right See fig 3 5 Switch on the power Commission Connect the power supply Use the gland on the left for this cable the instrument as required or use the default settings Replace the cover and secure frontplate with the four screws Connect the grounding terminals to protective earth The optional hose conn
31. d the transmitter is mounted within the distance of the sensor cables max 10 m up to 50m WF10 extension cable the setup is kept flexible for easy insertion and retraction of the sensors in the fitting 3 3 2 Additional precautions for installations in hazardous areas Intrinsic safe Make sure that the total of capacitances and inductances connected to the input terminals of the EXA SC202S do not exceed the limits given in the certificate This sets a limit to the cable and extensions used The intrinsic safe version of the EXA 202 instrument can be mounted in Zone 1 The sensors can be installed in Zone O or Zone 1 if a safety barrier according to the limits given in the system certificate is used Ensure that the total of capacitances and inductances connected to the terminals of the EXA SC202 do not exceed the limits given in the certificate of the safety barrier or distributor The cable used should preferably have a BLUE colour or marking on the outside Installation for sensors in Zone O or 1 Generally the distributor with input output isolation has no external earth connection If there is an earth connection on the distributor and the external connection of the transmitter is connected to protective earth the shield of the 2 wire cable may NOT be connected to protective earth at the distributor too IM 12D7B3 E H Installation and wiring 3 5 3 3 3 Installation in Hazardous Area Non Incendive The SC202S N may be
32. ddress 00 for point to point communication with 4 20mA transmission Addresses 01 to 15 are used in multi drop configuration fixed 4mA output The clock calendar for the logbook is set for current date and time as reference Erase logbook function to clear the recorded data for a fresh start This may be desirable when re commissioning an instrument that has been out of service for a while The load defaults code allows the instrument to be returned to the default set up with a single operation This can be useful when wanting to change from one application to another 5 9 Test and setup mode Code 80 TEST The test mode is used to confirm the instrument setup It is based on the factory setup procedure and can be used to check the QIC factory generated Certificate This test is described in the Quality Inspection Standard see chapter 12 NOTE Attempting to change data in service code 80 and above without the proper instructions and equipment can result in corruption of the instrument setup and will impair the perfor mance of the unit IM 12D7B3 E H Code Display Function Function detail Parameter setting 5 19 Default values Communication 60 COMM ADDR Communication Network address Set communication Set communication Set communication PH201 B On Communication write enable Communication write protect Set address 00 to 15 1 0 On Write enable HOUR MINUT SECND YEAR
33. dependent user programmable temperature coefficients from 0 00 to 3 50 per C F by adjustment or calibration Matrix Specifications 2 1 Conductivity function of concen tration and temperature Choice out of 5 preprogrammed matrixes and a 25 point user programmable matrix H Serial Communication I Logbook J Display K Power supply SC202G SC202S Note G o o Su A YN o am o sv O a 0 0 Bi directional according to HART digital communication super imposed on the 4 20mA signal Software record of important events and diagnostic data Available through HART interface Custom liquid crystal display with a main display of 3 2 digits 12 5 mm high Message display of 6 alpha numeric characters 7 mm high Warning flags and units mS cm kQ cm uS cm and MQ cm as appropriate Nominal 24 volt DC loop powered system Up to 40 volts up to 31 5 volts The transmitter contains a switched power supply The transmitter requires a minimum Power voltage in order to work correctly which is dependant on the load Please refer to figures 2 1 and 2 2 for the correct power supply h h o 2 o Communication a limit for IS version L 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 Voltage V Fig 2 1 Supply voltage load diagram 17 Volts 14 5 Volts Terminal voltage V 4 mA 7 mA 20 mA Output Curr
34. detailed table of error codes with possible causes and remedies 8 1 Diagnostics 8 1 1 Off line checks The EXA SC202 transmitter incorporates a diagnostic check of the adjusted cell constant value at calibra tion If the adjusted value stays within 80 120 of the nominal value set in service code Oa it is accept ed Otherwise the unit generates an error E3 With a HART communication package it is possible to scroll the calibration data in a logbook function The EXA also checks the temperature compensation factor while performing manual temperature compen sation as described in section 5 2 5 If the TC factor stays within 0 00 to 3 50 per C it is accepted Otherwise E2 will be displayed 8 1 2 On line checks The EXA performs several on line checks to optimize the measurement and to indicate a fault due to the fouling or polarization of the connected sensor The fault will be indicated by the activation of the FAIL flag in the display During measurement the EXA adjusts the measuring frequency to give the best conditions for the actual value being measured At low conductivity there is a risk of error due to the capacitive effects of the cable and the cell These are reduced by using a low measuring frequency At high conductivity the capacitive effects become negligible and errors are more likely to be caused by polarization or fouling of the cell These errors are decreased by increasing the measuring frequency At all val
35. e front cover window The functions make up the normal day to day operations that an operator may be required to complete Adjustment of the display and routine calibration are among the features accessible in this way See table 4 1 LEVEL 2 Commissioning A second menu is exposed when the EXA front cover is removed and the display board is revealed Users gain access to this menu by pressing the button marked in the lower right of the display board This menu is used to set such values as the output ranges and hold features It also gives access to the service menu See table 4 1 LEVEL 3 Service For more advanced configuration selections press the button marked then press NO repeatedly until you reach SERVICE Now push the YES button Selecting and entering Service Code numbers in the commissioning menu provide access to the more advanced functions An explanation of the Service Codes is listed in chapter 5 and an overview table is shown in chapter 11 Table 4 1 Operations overview PR Routine Function Chapter Maintenance CALIB Calibration with a standard solution or sample 6 DISPLAY 1 amp 2 Read auxiliary data or set message display HOLD Switch hold on off when activated Commissioning OUTPUT Adjust the output range SET HOLD Activate the hold function TEMP 1 amp 2 Select method of temperature compensation Service SERVICE Fine tune the specialized functions of the Access to coded entries transmitter
36. ea is Know to be non hazardous Explosion Hazard Do not disconnect equipment unless area is know to be non hazardous Do not reset circuit breaker unless power has been removed from the equipment or the area is know to be non hazardous IM 12D7B3 E H Installation and wiring 3 1 3 INSTALLATION AND WIRING 3 1 Installation and dimensions 3 1 1 Installation site The EXA transmitter is weatherproof and can be installed inside or outside It should however be installed as close as possible to the sensor to avoid long cable runs between sensor and transmitter In any case the cable length should not exceed 60 meters 200 feet Select an installation site where e Mechanical vibrations and shocks are negligible e No relay power switches are in the direct environment e Access is possible to the cable glands see figure 3 1 e The transmitter is not mounted in direct sunlight or severe weather conditions e Maintenance procedures are possible avoiding corrosive environments The ambient temperature and humidity of the installation environment must be within the limits of the instru ment specifications See chapter 2 3 1 2 Mounting methods Refer to figures 3 2 and 3 3 Note that the EXA transmitter has universal mounting capabilities e Panel mounting using two 2 self tapping screws e Surface mounting on a plate using bolts from the back e Wall mounting on a bracket for example on a solid wall e Pipe mounting using a
37. ection is used to guide the cables coming from an immersion fitting through a protective plastic tubing to the transmitter 3 2 1 Cables terminals and glands The SC202 is equipped with terminals suitable for the connection of finished cables in the size range 0 13 to 2 5 mm 26 to 14 AWG The glands will form a tight seal on cables with an outside diameter in the range of 7 to 12 mm 9 82 to 15 82 inches FE a SENSOR CABLE GLAND POWER OUTPUT CABLE GLAND ROUNDING TERMINAL Figure 3 5 Glands to be used for cabling IM 12D7B3 E H 3 4 Installation and wiring HAND HELD COMMUNICATOR Bog AREA ES E SENSORS 2 50r10m DISTRIBUTOR CURRENT OUTPUT Safety Barrier SC202S only RECORDER Figure 3 6 System configuration 3 3 Wiring of sensors 3 3 1 General precautions Generally transmission of signals from SC sensors is at a low voltage and current level Thus a lot of care must be taken to avoid interference Before connecting sensor cables to the transmitter make sure that fol lowing conditions are met the sensor cables are not mounted in tracks together with high voltage and or power switching cables only standard sensor cables or extension cable are use
38. ed on the Chloride model or the Ammonia model Our job is to develop on line analyzers that make it simple for our customers to meet the water quality that is specified as stage 1 Conductivity Limit as a Function of Temperature If the water exceeds the limits of stage 1 then it can still be acceptable but requires the customer to pro ceed to Stage 2 and possibly Stage 3 to validate the water quality It is our objective to assure that our customers do not exceed the limits in stage 1 to avoid them having to carry out the complicated laboratory checks in Stages 2 and 3 9 3 USP in the SC202 1 In SC202 we have defined an Error Code E13 This is independent of what range the customer is mea suring or what temperature compensation method he is using for water quality monitoring When the dis play shows E18 then the water quality exceeds the USP limits and the FAIL flag on the display is acti vated to signal that the system needs urgent attention 2 We have introduced uncompensated conductivity in the DISPLAY menu In the LCD display the user can read the temperature and the raw conductivity to compare his water quality with the USP table 3 We have kept all the EXA functionality It is even possible to have the mA Output and Display readings in resistivity units Most users will have very good water quality and in the resistivity mode they will have better resolution on the recorder or DCS The readings are simply the reciprocal val
39. ensation 1 Why 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 A coefficient a is introduced to express the amount of temperature influence in change in conductivity C In almost all applications this temperature influence must be compensated before the conductivity reading can be interpreted as an accurate measure of concentration or purity Table 5 1 NaCl compensation according to IEC 746 3 with Tref 25 C 2 Standard temperature compensation From the factory the EXA is calibrated with a general temperature compensation function based on a sodium chloride salt solution This is suitable for many applications and is compatible with the compensa tion functions of typical laboratory or portable instruments A temperature compensation factor is derived from the following equation Ki Keer y 100 T Teo Ke In which a Temperature compensation factor in C T z Measured temperature C K Conductivity at T Tre Reference temperature C Kret Conductivity at Tret 3 Manual temperature compensation If the standard compensation function is found to be inaccurate for the sample t
40. ent mA Fig 2 2 Minimum terminal voltage at the SC202 IM 12D7B3 E H 2 2 Specifications L Input isolation 1000 VDC M Shipping Details Package size w x h x d 290 x 225 x 170 mm 11 5 x 8 9 x 6 7 In Packed weight approx 2 5 kg 5lb 2 2 Operating specifications A Performance Conductivity Accuracy lt 0 5 0 02 mA Performance Resistivity Accuracy lt 0 5 9o 0 02 mA Performance Temperature with Pt1000Q Ni100Q and Pb36 NTC Accuracy lt 0 3 C 20 02 mA Performance Temperature with PT100Q and 8k550 Accuracy lt 0 4 C 0 02 mA Performance Temperature compensation NaCl table lt 1 Matrix lt 3 Ambient influence lt 0 05 C Step response 90 lt 2 decades in lt 7 seconds B Ambient operating temperature 10 to 55 C 10 to 130 F Excursions to 30 to 70 C 20 to 160 F will not damage the instrument specification maybe adversely affected Drift lt 500 ppm C C Storage temperature 30 to 70 C 20 to 160 F D Humidity 10 to 90 RH non condensing E HART specification Min cable diameter 0 51 mm 24 AWG Max cable length 1500 m Detailed information can be found at www hartcomm org F Housing Cast aluminium case with chemically resistant coating cover with flexible polycarbonate window Case color is off white and cover is moss green Cable entry is via two 1 2 polyamide glands Cable termi
41. er on the textplate affixed to the side of the instrument agrees with your order Examples of textplates are shown below C 0344 Y N200 C 0344 CONDUCTIVITY RESISTIVITY CONDUCTIVITY RESISTIVITY TRANSMITTER TRANSMITTER EXA SC202S EXA SC202S N C RANGE PROGRAMMABLE RANGE CONDUCTIVITY RESISTIVITY SUPPLY SUPPLY TRANSMITTER OUTPUT 4 TO 20 mA DC OUTPUT 4 TO 20 mA DC MODEL EXA SC202G ER AR 10 TO 55 C ER AR 10 TO 55 C PROGRAMMABLE EEx ib ia IIC T4 for Ta 10 to 55 C EEx nA L IIC T4 for Ta 10 to 55 C RANGE PROGRAMMABLE EEx nA L IIC T6 for Ta 10 to 40 C EEx ib ia IIC T6 for Ta 10 to 40 C SUPPLY 24V DC OUTPUT 4 TO 20 mA DC ON See 10 TO 55 C 112 1 G KEMA 00ATEX1069 X IS CL I DIV 1 GP ABCD T4 for Ta 10 to 55 C T6 for Ta 10 to 40 C HAZ LOC per Control Drawing FF1 SC202S 00 INTRINSICALLY SAFE SECURITE INTRINSEQUE APPROVED 113G KEMA 00ATEX1070 X NI CL I DIV 2 GP ABCD T4 for Ta 10 to 55 C T6 for Ta 10 to 40 C HAZ LOC per Control Drawing FF1 SC202S 00 NI CL I DIV 2 GP ABCD APPROVED T6 for Ta 10 to 40 C q T4 for Ta 10to 55 C Ex ia CL I DIV 1 GP ABCD T4 for Ta 10 to 55 C q T6 for Ta 10 to 40 C Refer to Installation Drawing i i 2S CSA Refer to Installation Drawing SC202S CSA WARNING AVERTISSEMENT Substitution of La substitution de composants WARNING AVERTISSEMENT Ma Substitution of La substitution de composants components
42. erminal 11 16 Uo 31 5 Volts DC lo 100 mA Po 1 2 Watt Protective earth Hazardous area Safe area qatan Zone O or 1 Zone 1 Figure 2 e Sensor s are of a passive type to be regarded as simple apparatus devices which comply with clause 1 3 of the EN 50014 e Electrical data of the EXASC202S Supply and output circuit terminals and Maximum input voltage U 31 5 V Maximum input current 100 mA Maximum input power P 1 2 W Effective internal capacitance C 22 nF Effective internal inductance L 22 uH Sensor input circuit terminals 11 through 16 Maximum output voltage U 14 4 V Maximum output current 12 8 mA Maximum allowed external capacitance Co 103 nF Maximum allowed external inductance L 200 mH e Barriers and power supply specification must not exceed the maximum values as shown in the diagram above These safety descriptions cover most of the commonly used industry standard barriers isolators and power supplies e The Hand Held Communicator must be of a ATEX certified intrinsically safe type in case it is used on the intrinsically safe circuit in the hazardous area or of a ATEX certified non incendive type in case it is used in the non incendive circuit in the hazardous area IM 12D7B3 E H 2 4 Specifications CSA intrinsic safe and non incendive diagrams for SC202S A Intrinsically safe design CSA Ex ia Class I Div 1 Group ABCD T4 for ambient temp lt 5
43. failure Process environmental conditions that may be related to the installation failure of the device A statement whether warranty or non warranty service is requested Complete shipping and billing instructions for return of material plus the name and phone number of a contact person who can be reached for further information Returned goods that have been in contact with process fluids must be decontaminated disinfected before shioment 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 IM 12D7B3 E H CONFIGURATION CHECKLIST FOR SC202 Primary choices Measurement Range Temperature unit Sensor Cell constant Sensor type Temperature compensator Choices Communication Burn out Temperature compensation USP functionality HOLD during maintenance Calibration temperature ZERO calibration Diagnostics Cell fouling alarm Password protection Output in Concentration units IM 12D7B3 E H default Conductivity 0 1000 uS cm Celsius 0 1 cm 2 electrode Pt1000 enabled inactive NaCl in water inactive inactive inactive inactive hard alarm on all errors active inactive inactive alternatives Resistivity max 1999 mS C Fahrenheit any value between 0 08 and 50 4 electrode Ni100 Pt100 8k55 Pb36 disable HARTA PH201 B HI
44. figure 2 The Hand Held Terminal must be FM Approved Refer to the manufacturers control drawing of the HHT and the barrier power supply to determine the cable parameters Voc Or Vi Vu 31 5 V so or li lyyr lt 100 MA C 222 NF Coapie Cut La Z 22 MH Loabie Lunt When installing this equipment follow the manufacturer s installation drawing Installation should be in accordance with ANSI ISA RP 12 06 01 Installation of Intrinsically Safe Systems for Hazardous Classified Locations and the National Electrical Code ANSI NFPA 70 Control equipment connected to the barrier power supply must not use or generate more than 250 Vrms or Vdc e Resistance between Intrinsically Safe Ground and earth ground must be less than 1 0 Q WARNING Substitution of components may impair Intrinsic Safety To prevent ignition of flammable or combustible atmospheres disconnect power before servicing or read understand and adhere to the manufacturer s live maintenance procedures IM 12D7B3 E H FM non incendive diagrams for SC202S N Intrinsically safe design FM Class I Div 2 Group ABCD T4 for ambient temperature lt 55 C T6 for ambient temperature lt 40 C EXA SC202S analyser Voc lt 31 5 VDC D Er O U Z LLl U terminal 11 16 Max cable length 60 mtr FM approved power supply Cable diam 3 to 12mm For electrical data see text below Protective earth Classified Location Unclassified Location ap
45. g junction box and extension cable 3 6 SOME SCM SOF SY SUSI Sd ES A O FO 3 3 7 1 Sensor cable connection using junction box BA10 and extension cable WF10 3 7 4 OPERATION DISPLAY FUNCTIONS AND SETTING HA Y Y ALAR YC LYFR FY Y FFAN 4 1 a Ne PALO lM Ee tele TT A E WU RT AE NND HN 4 1 ez ED UO ODAC IKE VS n 4 2 A a HN a Y Y en EE E 4 3 o e F AS SC OCC DOECO ea teenie aca NR A HC AU 4 3 AA NIG OIA STD e iO 4 3 ASIA LAN GUO nes Y acta nit veren Y Y AE 4 4 5 PARAMETER SETHNO GG Cau a 5 1 Sel IVANKA NC SO OS eL i ee Soa cado dl a AL a lain dd Sa A Uin do BO 5 1 a is MPMMOGUC HON A PR AD IR POR RREO ERR DO O SRS SR 5 1 Su A Me a5 221610 OO AA A acta DW FN 5 3 Se COMMISSION OC O END DS NE il a a 5 2 Bee 12M OGUIC HOM paras PF cat cos NO I o TE AFF 5 2 E ANO A A A EO a SS NR a A NR a DR o 5 3 o AAA rn et te DAR PR RU E ae me WA 5 4 o lenn aur Compensation a a Caan eae 5 5 5 2 5 Temperature COMPENSATION selection occocconccocncocnnncnoncnnnnnoronncnnononononcnnncnnrnnnronanonanos 5 6 DeO CIVICS C OO ennn et Ra a eee ie cee FY 5 7 IM 12D7B3 E H E FEES HF HETH HR HEH FE Salen eee erg N A HN eRS 5 11 5 3 1 Parameter specific FUNCIONS ue FD DR AGO FFR A NN TA GR Dn 5 12 5 3 2 Temperature compensation and measuring TUNC ONS ooccocnoccconcnonnnonnnncnnancnnnnnnnnns 5 14 5 4 Temperature compensation ata a da 5 16 a TA ONE UNCION a ato 5 18 5 20 STGO AMIA Cato Seta ata dd 5 22 cn
46. g within the service menu The specific settings are listed in numerical sequence on the following pages On the page facing the setting tables are concise explanations of the purpose of the service codes OUTPUT SET HOLD TEMP SERVICE YES NO After changing the parameter the instrument first goes into reset to load the parameter specific default values Z 1 Ll aigi UN Example Service Code 01 Select main parameter r LI for SG for RES a 3 With the gt A ENT keys A LRE alt if ENT ENT _ CrOCT KLUTE ASLRES A Fi Lf i 1 j Li ALUJE SK S m L y YES gt IM 12D7B3 E H 5 8 Parameter setting 5 3 Service Codes 5 3 1 Parameter specific functions Code 1 SC RES Code 2 A ELEC Code 3 0 10xC Code 4 AIR Code 5 POL CK IM 12D7B3 E H Choose the required parameter either conductivity or resistivity If the parameter is changed the instrument will go into reset to load parameter specific default val ues followed by starting measurement For all other service codes the instrument will return to commissioning mode after the service code setting is finished Choose the required sensor type Normally conductivity and or resistivity mea surements are done with 2 electrode type sensors At high conduct
47. ge current should remain below 12 mA 4 1 Accuracy Testing Our automated testing facility checks the resistivity input accuracy of the instrument using a calibrated variable resistor decade resistor box 4 2 Accuracy Testing of all supported temperature elements Our automated testing facility checks the input accuracy of the instrument using a calibrated variable resistor decade resistor box to simulate the resistance of all temperature elements IM 12D7B3 E H 12 2 Test Certificate 4 3 Overall Accuracy Test This test can be performed by the end user to check the overall accuracy of the instrument The data specified on the Test certificate are results of the overall accuracy test performed during production and can be reproduced by performing similar tests with the following test equipment 1 A variable resistor resistor decade box 1 to simulate the temperate element All tests are performed simulating 25 C 77 F 2 A second variable resistor box 2 to simulate the conductivity Recommended is a resistor decade box in steps of 1 9 between 2 Q and 1200 kQ accuracy 0 1 A fixed resistor of 300 9 to simulate the mA output load Screened cable to connect the input signals a WU20 cable with a length of 2 metres is preferred A stabilised voltage supply unit nominal 24 Volt DC A current meter for DC currents up to 25 mA resolution 1uA accuracy 0 1 O Ol BO Connect the SC202 as shown in Figure 1 Set box
48. he range T5 T1 is 25 C Code 24 28 L1xT1 L5xT5 In these access codes the specific conductivity values can be entered for 5 different concentrations of the process liquid each one in one specific access code 24 to 28 The table below shows a matrix entering example for 1 15 NaOH solution for a temperature range from O 100 C NOTES 1 In chapter 11 a table is included to record your programmed values It will make programming easy for duplicate systems or in case of data loss 2 Each matrix column has to increase in conductivity value 3 Error code E4 occurs when two standard solutions have identical conductivity values at the same tem perature within the temperature range Table 5 2 Example of user adjustable matrix Matrix Example Example Example Example Example Code 23 Code 24 Code 25 Code 26 Code 27 Code 28 Temperature Solution 1 1 Solution 2 3 Solution 3 6 Solution 4 10 Solution 5 15 IM 12D7B3 E H 0 C 31 mS cm 86 mS cm 146 mS cm 195 mS cm 215 mS cm 25 C 53 mS cm 145 mS cm 256 mS cm 359 mS cm 412 mS cm 50 C 76 mS cm 207 mS cm 368 mS cm 528 mS cm 647 mS cm 75 C 98 mS cm 264 mS cm 473 mS cm 692 mS cm 897 mS cm 100 C 119 mS cm 318 mS cm 575 mS cm 847 mS cm 1134 mS cm Code Display Function Function detail Parameter setting 5 13 Default values Temperature compensation functions
49. his has been previously set up in service code 52 section 5 Calibrate See calibration section 6 Display setting See operation section 4 Hold Manually switch on off hold when enabled in commissioning menu See adjustment procedure 5 2 3 5 1 2 Manual activation of Hold CALIBRATE MEASURE IM 12D7B3 E H 5 2 Parameter setting 5 2 Commissioning mode 5 2 1 Introduction In order to obtain peak performance from the EXA SC202 you must set it uo for each custom application Output ranges mA output is set as default to 0 1 mS cm or 0 19 99 MQ cm For enhanced resolution in more stable measuring processes it may be desirable to select for example 5 10 uS cm range Hold The EXA SC202 transmitter has the ability to HOLD the output during maintenance peri ods This parameter should be set up to hold the last measured value or a fixed value to suit the process Temp1 2 First and second temperature compensation types and values see also section 5 2 4 NaCl is the default compensation and is used for neutral salt solutions Strong solutions of salts are compensated as are process waters and pure and ultrapure water TC temperature coefficient compensation uses a linear temperature compensation fac tor This can be set by calibration or configuration Matrix compensation is an ex
50. installed in a Category 3 Zone 2 Div 2 area without the use of safety barriers Maximum permissible supply voltage 31 5V 3 4 Wiring of power supply 3 4 1 General precautions Do not activate the power supply yet First make sure that the DC power supply is according to the specifi cations given WAVERING DO NOT USE ALTERNATING CURRENT OR MAINS POWER SUPPLY The cable leading to the distributor power supply or safety barrier transports power to and output signal from the transmitter Use a two conductor shielded cable with a size of at least 1 25 mm and an outside diameter of 7 to 12 mm The cable gland supplied with the instrument accepts these diameters The maxi mum length of the cable is 2000 metre or 1500 metres when using the communications This ensures the minimum operating voltage for the instrument Grounding e f the transmitter is mounted on a grounded surface e g a metal frame fixed in the soil the shield of the 2 wire cable may NOT be connected to ground at the distributor e l the transmitter is mounted on a non conducting surface e g a brick wall it is recommended to ground the shield of the 2 wire cable at the distributor end 3 4 2 Connection of the power supply The terminal strip is accessed as was described in section 3 2 1 Use the left hand gland to insert the sup ply output cable to the transmitter Connect the supply to the terminals marked and G as is indicated in fig ures 3 11 3 4 3
51. ivity ranges polarization of the electrodes may cause an error in conductivity measurement For this reason 4 electrode type sensors may be necessary Enter the factory calibrated cellconstant mentioned on the textplate or on the fixed cable This avoids the need for calibration Any value between 0 008 and 50 0 cm may be entered The position of the decimal point may be changed according the visual description in the right handed page of section 5 2 2 NOTE If the actual cell constant is changed after a calibration or if the entered cell constant differs from previous value then the message RESET will appear on the second line display After pressing YES the entered value becomes the new nominal and calibrated cell constant After pressing NO the update proce dure of the cell constant entry is canceled To avoid cable influences on the measurement a zero calibration with a dry sensor may be done If a connection box BA10 and extension cable WF10 are be used zero calibration should be done including this connection equipment When using a 4 electrode sensor additional connections are required temporarily Interconnect terminals 13 amp 14 with each other and 15 amp 16 with each other before making the adjustment This is necessary to eliminate the capacitive influ ence of the cables The links should be removed after this step is completed The EXA SC202 has a polarization check capable of monitoring
52. led clean it using a soft damp cloth or soft tissue To deal with more stubborn stains a neutral detergent may be used NOTE Never used harsh chemicals or solvents In the event that the window becomes heavily stained or scratched refer to the parts list Chapter 10 for replacement part numbers When you must open the front cover and or glands make sure that the seals are clean and correctly fitted when the unit is reassembled in order to maintain the housing s weatherproof integrity against water and water vapour The measurement otherwise may be prone to problems caused by exposure of the circuitry to condensation see page 10 1 The EXA instrument contains a lithium cell to support the clock function when the power is switched off This cell needs to be replaced at 5 yearly intervals or when discharged Contact your nearest Yokogawa service centre for spare parts and instructions 7 2 Periodic maintenance of the sensor NOTE Maintenance advice listed here is intentionally general in nature Sensor maintenance is highly application specific In general conductivity resistivity measurements do not need much periodic maintenance If the EXA indi cates an error in the measurement or in the calibration some action may be needed ref chapter 8 trouble shooting In case the sensor has become fouled an insulating layer may be formed on the surface of the electrodes and consequently an apparent increase in cell constant may occur givi
53. lues in TABLE Service Code 35 IM 12D7B3 E H Code Display Function Function detail Parameter setting 5 15 Default values mA Outputs 30 Not used 31 OUTP F mA output functions Linear Table Linear 32 BURN Burn function No burnout Burnout downscale Burnout upscale Pulse burnout No Burn Not used TABLE 0 5 10 95 100 Output table for mA Linearization table for mA in 5 steps The measured value is set in the main display using the gt ENT keys for each of the 5 interval steps Where a value is not known that value may be skipped and a linear interpolation will take place Not used IM 12D7B3 E H 5 16 Service coded settings 5 6 User interface Code 50 Code 52 Code 53 Code 54 Code 55 Code 56 Code 57 RET PASS Err01 ES LIM amp E6 LIM DISP USP IM 12D7B3 E H When Auto return is enabled the transmitter reverts to the measuring mode from anywhere in the configuration menus when no button is pressed during the set time interval of 10 minutes Passcodes can be set on any or all of the access levels to restrict access to the instrument configuration Error message configuration Two different types of failure mode can be set Hard fail gives a steady FAIL flag in the display A fail signal is transmitted on the mA output when enabled in
54. manual are subject to change without notice Yokogawa is not responsible for damage to the instrument poor performance of the instrument or losses resulting from such if the problems are Caused by e Improper operation by the user e Use of the instrument in improper applications e Use of the instrument in an improper environment or improper utility program e Repair or modification of the related instrument by an engineer not authorized by Yokogawa Warranty and service Yokogawa products and parts are guaranteed free from defects in workmanship and material under normal use and service for a period of typically 12 months from the date of shioment from the manufacturer Individual sales organizations can deviate from the typical warranty period and the conditions of sale relating to the original purchase order should be consulted Damage caused by wear and tear inadequate maintenance corrosion or by the effects of chemical processes are excluded from this warranty coverage In the event of warranty claim the defective goods should be sent freight paid to the service department of the relevant sales organization for repair or replacement at Yokogawa discretion The following information must be included in the letter accompanying the returned goods Part number model code and serial number Original purchase order and date Length of time in service and a description of the process Description of the fault and the circumstances of
55. may peut rendre ce materi l inacceptable components may impair peut compromettre la s curit impair suitability for pour les emplacements de RL safety EF Inirinseaue Class I Division 2 Classe I Division 2 YOKOGAWA amp YOKOGAWA 4 YOKOGAWA 4 Made in the Netherlands Amersfoort The Netherlands Amersfoort The Netherlands Figure 1 1 Textplate M Month NOTE The textplate will also contain the serial number and any relevant January certification marks Be sure to apply correct power to the unit February The first two characters of the serial number refers to the year and March month of manufacturing Check that all the parts are present including mounting hardware as specified in the option codes at the end of the model number For a September description of the model codes refer to Chapter 2 of this manual October November December under General Specifications Basic Parts List Transmitter SC202 User s Manual See model code for language Optional mounting hardware when specified See model code NOTE mounting screws and special grommet are packed in the terminal compartment IM 12D7B3 E H 1 2 Introduction 1 2 Application The EXA transmitter is intended to be used for continuous on line measurement in industrial installations The unit combines simple operation and microprocessor based performance with advanced self diagnostics and enhanced communications capability to meet the most adva
56. mum allowed external inductance L 200 mH e Barriers and power supply should be CSA certified The specifications must not exceed the maximum values as shown in the dia gram above Installation should be in accordance with Canadian Electrical Code Part I or CEC Part I Maximum safe area voltage should not exceed 250 VRMS For Class Div 2 Group ABCD the CSA certified barrier is not required and the Sensor input circuit terminals 11 through 16 is non incendive having the parameters Maximum output voltage Voc 14 4 V Maximum output current Is 12 8 mA Maximum allowed external capacitance C 1 4 pF Maximum allowed external inductance L 900 mH e The Hand Held Communicator must be of a CSA certified intrinsically safe type in case it is used on the intrinsically safe circuit in the hazardous area or of a CSA certified non incendive type in case it is used on the non incendive circuit in the hazardous area IM 12D7B3 E H 2 5 Specifications FM intrinsic safe diagrams for SC202S A Intrinsically safe design FM Approved FM Class Div 1 Group ABCD T4 for ambient temperature lt 55 C Safety barrier or power supply with R 300 T6 for ambient temperature lt 40 C HART compatible EXA SC202S analyser Suitable values are Voc or Vt lt 31 5 Volt DC Isc or It lt 100 mA o Supply Voltage D oc O Z LLl 0 terminal 11 16 Max cable length 60 mir Cable diam 3 to 12mm For electrical data
57. nals are provided for up to 2 5 mm finished wires Weather resistant to IP65 and NEMA 4X standards Pipe wall or panel mounting using optional hardware 2 3 Model and suffix codes G Data protection H Watchdog timer EEPROM for configuration and log book and lithium battery for clock Checks microprocessor I Automatic safeguard Return to measuring mode when no keystroke is made for 10 min J Operation protection 3 digit programmable password K Regulatory compliance EMC Emmission Immunity L Intrinsic safety FM APPROVED M Non Incendive FM APPROVED CSA N DD specification meets council directive 89 336 EEC meets EN 55022 Class A meets EN 61000 6 2 EEx ib ia IIC T4 for Ta 10 to 55 C EEx ib ia IC T6 for Ta 10 to 40 C KEMA OOATEX1069 X Ex ia CL DIV 1 GP ABCD T4 for Ta 10 to 55 C T6 for Ta 10 to 40 C Refer to Installation Drawing SC202S CSA IS CL I DIV 1 GP ABCD T4 for Ta 10 to 55 C T6 for Ta 10 to 40 C HAZ LOC per Control Drawing FF1 SC202S 00 NI CL I DIV 2 GP ABCD T4 for Ta 10 to 55 C T6 for Ta 10 to 40 C HAZ LOC per Control Drawing FF1 SC202S 00 NI CL I DIV 2 GP ABCD T4 for Ta 10 to 55 C T6 for Ta 10 to 40 C Refer to Installation Drawing SC202S CSA EEx nA L IIC T4 for Ta 10 to 55 C EEx nA L IIC T6 for Ta 10 to 40 C KEMA OOATEX1070 X The SC202 Device Desc
58. nced requirements The measurement can be used as part of an automated process control system It can also be used to indicate dangerous limits of a process to monitor product quality or to function as a simple controller for a dosing neutralisation sys tem Yokogawa designed the EXA analyzer to withstand harsh environments The transmitter may be installed either indoors or outside because the IP65 NEMA4X housing and cabling glands ensure the unit is adequately protected The flexible polycarbonate window on the front door of the EXA allows pushbutton access to the keypad thus preserving the water and dust protection of the unit even during routine mainte nance operations A variety of EXA hardware is optionally available to allow wall pipe or panel mounting Selecting a proper installation site will permit ease of operation Sensors should normally be mounted close to the transmitter in order to ensure easy calibration and peak performance If the unit must be mounted remotely from the sensors WF10 extension cable can be used up to a maximum of 50 metres 150 feet with a BA10 junction box The EXA is delivered with a general purpose default setting for programmable items Default settings are listed in Chapter 5 and again in Chapter 11 While this initial configuration allows easy start up the configuration should be adjusted to suit each particular application An example of an adjustable item is the type of temperature sensor used The
59. ng a measuring error This error is RV x 100 Rcel where Rv the resistance of the fouling layer Rcel the cell resistance NOTE Resistance due to fouling or to polarization does not effect the accuracy and operation of a 4 electrode conductivity measuring system If an apparent increase in cell constant occurs cleaning the cell will restore accurate measurement Cleaning methods 1 For normal applications hot water with domestic washing up liquid added will be effective 2 For lime hydroxides etc a 5 10 solution of hydrochloric acid is recommended 3 Organic foulings oils fats etc can be easily removed with acetone 4 For algae bacteria or moulds use a solution of domestic bleach hypochlorite Never use hydrochloric acid and bleaching liquid simultaneously The very poisonous chlorine gas will result IM 12D7B3 E H IM 12D7B3 E H Troubleshooting 8 1 8 TROUBLESHOOTING The EXA SC202 is a microprocessor based analyzer that performs continuous self diagnostics to verify that it is working correctly Error messages resulting from faults in the microprocessor systems itself are few Incorrect programming by the user can be corrected according to the limits set in the following text In addition the EXA SC202 also checks the sensor to establish whether it is still functioning within specified limits What follows is a brief outline of some of the EXA SC202 troubleshooting procedures followed by a
60. ng instructions refer to the HHC user s manual and the on line helo structure Level 1 menu Process variab Diag Service Basic Setup Detailed Setup ON LINE MENU Device setup Primary value Analog output Lower rangeval Upper rangeval Review Level 2 menu Level 3 menu Process value Second process value Uncomp process val Weight percentage Temperature of output range Status Hold Logbook Tag Device informat Error status Hold on off Hold enable disable Hold type Hold value Logbook conf Logbook 1 Logbook 2 Date Descriptor Message Write protect Manufacture device id Process unit 2 or 4 electrodes Nominal CC CC after calibration Polarization check Temp sensor Temp unit Reference temp Temp compens 1 TC1 percentage Temp Compens 2 TC2 percentage Matrix selection Matrix table Param Specific Temp Specific Burn function Level 4 menu Event1 event64 Rec 1 50 Rec 1 50 Appendix 11 7 Level 5 menu Matrix temp 1 5 Matrix1_1 5_5 mA Table Table 0 100 User Interface Error programming Error 1 Error 13 Display Model Manufacturer Distributor Tag Descriptor Message Date Device id Write protect Universal revision Transmitter revision Software revision Hardware revision Polling address Req preambles Auto return E5 limit E6 limit Weight 0 Weight 100 Display format US
61. o be measured the trans mitter can be set manually for a linear factor on site to match the application The procedure is as follows Take a representative sample of the process liquid to be measured Heat or cool this sample to the reference temperature of the transmitter usually 25 C Measure the conductivity of the sample with the EXA and note the value Bring the sample to the typical process temperature to be measured with the EXA Adjust the display indication to the noted value at the reference temperature Check that the temperature compensation factor has been changed Insert the conductivity cell into the process again NOOR WN Other possibilities section 5 4 Enter calculated coefficient Enter matrix temperature compensation hm A IM 12D7B3 E H 5 6 Parameter setting 5 2 5 Temperature compensation selection ALL YES NO D Fine MATRX gt YES NO no IM 12D7B3 E H YES After briefly displaying WAIT it will be possible to adjust the display reading to the correct value using gt A ENT keys 171 LILI LL gt Briefly WAIT ae uS cm YES gt x TEMP 1 or YES TEMP 2 5 2 6 Service code Parameter setting 5 7 The figure below shows a typical button sequence to change a settin
62. ode as set in Service Code 52 to obtain access to the Maintenance Mode Commissioning Press key The display shows 000 and PASS Enter a 3 digit passcode as set in Service Code 52 to obtain access to the Commissioning Mode Service From the commissioning menu select Service by pressing YES key The display shows 000 and PASS Enter a 3 digit passcode as set in Service Code 52 to obtain access to the Service Mode NOTE See Service Code 52 for the setting of passcodes 4 4 Display examples The following pages show the sequence of button presses and screens displayed when working in some standard configurations More or less options will be made available by the configuration of some service codes or by choices made in the commissioning menu The following deviations are possible Item marked is omitted when switched off in commissioning mode xx Temperature compensation will be displayed dependent on chosen compensation method NaCl TC or matrix DISP 2 only appears if a 2nd different temperature compensation is set xxx W W only appears if switched on in service code 55 In display 2 w w never appears IM 12D7B3 E H Operation 4 3 4 5 Display functions peration Sequence for resistivity function is similar to this conductivity example Display Functions Sequence for resistivity function equals this conductivity example Actual cell constant p rim a L
63. of the temperature compensation sensor The default selection is the Pt1000 Ohm sensor which gives excellent precision with the two wire connec tions used The other options give the flexibility to use a very wide range of other conductivity resistivity Sensors Celsius or Fahrenheit temperature scales can be selected to suit user preference With the process temperature sensor at a stable Known temperature the temperature reading is adjusted in the main display to correspond The calibra tion is a zero adjustment to allow for the cable resistance which will obviously vary with length The normal method is to immerse the sensor in a vessel with water in it measure the temperature with an accurate thermometer and adjust the reading for agreement Code Display Function Function detail Parameter setting 5 11 Default values Temperature measuring functions 10 T SENS T UNIT Temperature sensor Display in C or F Pt1000 Ni100 Pb36 Pt100 8k55 Ee F Pt1000 T ADJ Calibrate temperature Adjust reading to allow for cable resistance Use gt ENT keys to adjust value Not used IM 12D7B3 E H 5 12 Parameter setting 5 4 Temperature compensation functions Code 20 EREG Choose a temperature to which the measured conductivity or resistivity value must be compensated Normally 25 C is used therefore this temperature is cho sen as default value
64. proprietary HART communication link allows remote configuration and data retrieval through the PC202 communication package This is an excellent tool for the maintenance engineer quality engineer or plant manager Service codes 60 69 are used to set up the communications e Logbook In combination with the communications link a logbook is available to keep an electronic record of events such as error messages calibrations and programmed data changes By reference to this log users can for instance easily determine maintenance or replacement schedules Note On the pages 11 4 amp 11 5 a reference list for the configuration of the SC202 is shown IM 12D7B3 E H 11 4 Appendix 11 6 User setting table FUNCTION SETTING DEFAULTS USER SETTINGS Parameter specific functions 01 SC RES O 02 Pies fo Te 2 Elec 03 1 000 cm 04 JAR O OO Temperature measuring functions 10 TSENS E Pt1000 WU amn joo 12 T ADJ None Temperature compensation functions T R C 29 m EA 2 1 ws 22 max None see 525 24 25 26 27 28 mA outputs a 32 35 TABL1 21 pt table see code 31 11 1 IM 12D7B3 E H User Interface FUNCTION SETTING DEFAULTS USER SETTINGS hard fail hard fail Appendix 11 5 Err O6 hard fail Err O7 hard fail Err O8 hard fail Err 13 soft fail 54 55 NnitOlalalalala al ES LIM 0 mS a run 0 004 E6 LIM 1 000 1 0 ih 100 100
65. r 06 Err O7 Err 08 Err 13 Error setting Soft Hard Soft Hard Soft Hard Temperature sensor open Soft Hard Temp sensor shorted Soft Hard USP limit exceeded Soft Hard Polarization too high Shorted measurement Open measurement E5 LIM E6 LIM E5 limit setting E6 limit setting Maximum conductivity value Minimum resistivity value Minimum conductivity value Maximum resistivity value 0 100 Display mA in w w mA range displayed in w w off mA range displayed in w w on Set 0 output value in w w Set 100 output value in w w9o DISP Display resolution Auto ranging display Display fixed to X XXX uS cm or MQ cm Display fixed to XX XX uS cm or MQ cm Display fixed to XXX X uS cm or MQ cm Display fixed to X XXX mS cm or kQ cm Display fixed to XX XX mS cm or kQ cm Display fixed to XXX X mS cm or kQ cm Display fixed to XXXX mS cm or kQ cm USP setting Disable the E13 USP limit exceeded Enable the E13 USP limit exceeded OIN O O A O MD o Not used IM 12D7B3 E H 5 18 Parameter setting 5 7 Communication setup Code 60 COMM ADDR Code 61 HOUR MINUT SECND YEAR MONTH DAY Code 62 ERASE 5 8 General Code 70 LOAD The settings should be adjusted to suit the communicating device connected to the output The communication can be set to HART or to PH201 B distributor for Japanese market only Select a
66. r other sensors va 11 12 13 14 15 16 SUPPLY SENSOR Figure 3 11 Terminal identification label 3 7 1 Sensor cable connections using junction box BA10 and extension cable WF10 Where a convenient installation is not possible using the standard cables between sensors and transmitter a junction box and extension cable may be used The Yokogawa BA10 junction box and the WF10 exten sion cable should be used These items are manufactured to a very high standard and are necessary to ensure that the specifications of the system are not compromised The total cable length should not exceed 60 metres e g 5 m fixed cable and 55 m extension cable IM 12D7B3 E H 3 8 Installation and wiring e TRANSMITTER CONVERTER d 5 Core 6 Screen White Co axial cable i Overall Screen e Thermistor Temperature sensor r 3 Core 47 Screen WF10 Cable Brown Co axial Cable L Z eb Zt pb pb 9b Sb aaa o o o oio shield Fig 3 12 Connection of WF10 extension cable and BA10 BP10 junction box NOTE See page 3 10 for termination for WF10 cable in combination with EXA SC IM 12D7B3 E H Installation and wiring 3 9 Extension cable may be purchased in bulk quantities cut to length Then it is necessary to terminate the cable as shown below Termination procedure for WF10 cable 1 Slide 3 cm of heat shrink tube 9 x 1 5 over the cable end to be terminated 2 St
67. reet 92 SINGAPORE 528872 Tel 65 783 9537 Fax 65 786 2606 Manufactured by GERMANY Rota Yokogawa GmbH amp Co KG Rheinstrasse 8 D 79664 WEHR Tel 49 7761 567 O Fax 49 7761 567 126 SOUTH AFRICA Yokogawa South Africa Pty Itd 67 Port Road Robertsham Southdale 2135 JOHANNESBURG Tel 27 11 680 5420 Fax 27 11 680 2922 UNITED STATES OF AMERICA Yokogawa Corporation of America 2 Dart Road NEWNAN GA 30265 1040 Tel 1 770 253 70 00 Fax 1 770 251 28 00 ISO 9001 certificated irm CENTRAL EAST REGION Via Yokogawa Ges m b H Czechia Slovakia Poland Croatia Slovenia Jugoslavia Bulgaria Romania Macedonia Bosnia amp Herzegovina Distributors in Denmark Finland Greece Norway Portugal Russian Federation Sweden Switzerland and Turkey Block 03 06 01 Printed in The Netherlands 06 401 A O
68. rip 9 cm of the outer black insulating material taking care not to cut or damage internal cores lt 3 cm gt 9cm heat shrink remove insulation Fig 3 13a 3 Remove loose copper screening and cut off the cotton packing threads as short as possible 4 Strip insulation from the last 3 cm of the brown and the white coaxial cores Pa _ gt gt E lt lt ES Gola EN MN A iA e WE lt 3 cm gt cotton threads Fig 3 13b 5 Extract the coaxial cores from the braid and trim off the black low noise screening material as short as possible 6 Insulate the overall screen and drain wire 14 and the 2 coaxial screens with suitable plastic tubing 7 Strip and terminate all ends with suitable crimp terminals and identify with numbers as shown Fig 3 13c 8 Finally shrink the overall heat shrink tube into position IM 12D7B3 E H IM 12D7B3 E H Installation and wiring 3 10 4 OPERATION DISPLAY FUNCTIONS AND SETTING 4 1 Operator interface This section provides an overview of the operation of the EXA operator interface The basic procedures for obtaining access to the three levels of operation are described briefly For a step by step guide to data entry refer to the relevant section of this user s manual Figure 4 1 shows the EXA operator interface LEVEL 1 Maintenance These functions are accessible by pushbutton through a flexibl
69. ription is available enabling communications with the Handheld Communicator HCC and compatible devices Model Suffix Code Option code Description ___ O Z O Z O Z Oo O O O a E nin Safe version Conductivity Transmitter Intrinsic Safe version Milli amp HART version FOUNDATION 6 Fieldbus version Non Incendive Milli amp HART version Stainless steel tagplate Calibration certificate Hood for Sun Protection Pipe amp Wall mounting hardware Non Incendive FOUNDATION 6 Fieldbus version IM 12D7B3 E H Specifications 2 3 2 3 Connection diagrams for power supply ATEX intrinsic safe and non incendive diagrams for SC202S A Intrinsically safe design EEX ib 112 1 G EEX ib ia HC T4 for ambient temperature lt 55 eC Certified safety barrier or power supply T6 for ambient temperature lt 40 C with Rint 3000 Certificate nr KEMA 00 ATEX 1069 X HART compatible EXA SC202S analyzer Uo 31 5 Volts DC lo 100 mA oc O Z LLl 0 24 volts DC Nominal Supply Voltage terminal 11 16 Protective earth Load OS Resistance Hazardous area Safe area gt Zone 0 or 1 Zone 1 Protective earth Figure 1 Intrinsically safe design 112 1 G EEX ib ia IIC T4 for ambient temperature lt 55 C EEX ib Certified Repeater T6 for ambient temperature lt 40 C Power supply Certificate nr KEMA 00 ATEX 1069 X HART compatible EXA SC202S analyzer SENSOR t
70. s key moves the cursor or flashing digit one place to the right This is used to select the digit to be changed when entering numerical data A is used to change the value of a selected digit Each press on this key increases the value by one unit The value can not be decreased so in order to obtain a lower value increase past nine to zero then increase to the required number ENT When the required value has been set using the gt and keys press ENT to confirm the data entry Please note that the EXA does not register any change of data until the ENT key is pressed key This is the commissioning mode key It is used to obtain access to the commissioning menu This can only be done with the cover removed or opened Once this button has been used to initiate the commissioning menu follow the prompts and use the other keys as described above IM 12D7B3 E H Operation 4 2 4 3 Setting passcodes 4 3 1 Passcode protection In Service Code 52 EXA users can set passcode protection for each one of the three operating levels or for any one or two of the three levels This procedure should be completed after the initial commissioning setup of the instrument The passcodes should then be recorded safely for future reference When passcodes have been set the following additional steps are introduced to the configuration and pro gramming operations Maintenance Press MODE key The display shows 000 and PASS Enter a 3 digit passc
71. sor SCICC nbad Y od Adenia DN Na YUA y Aw FF 11 3 11 4 3 Selecting a temperature SENSO assi So ences ee ee aed ee ee EE 11 3 1 9 SEU TOR OTS UNCION tiago A UON UN EG GYDD 11 3 iM SER SUING tal oa 11 4 WIT ETTO ae o AO A CT CC ad Y A a A Rd A od GA 11 6 11 89 Device Description DD MAGIC SUM CTO Sa 11 7 SAG nO pla 10 o AAA PPP O O O Eo CO 11 8 12 Test Certific ale cn A SA aA Y AF CN AGAU 12 1 IM 12D7B3 E H PREFACE Electric discharge The EXA analyzer 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 Installation and wiring The EXA analyzer 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 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 Although the instrument has a weatherproof construction the transmitter can be harmed if it becomes submerged in water or becomes excessively wet Do not use an abrasive or solvent in cleaning the instrument Notice Contents of this
72. the signal from the cell for distortion from polarization errors If there is a problem with the instal lation or the cell becomes fouled this will trigger E1 For some application with very low conductivity and long cable runs this error detection can cause false alarms during operation Therefore this code offers the possibility to disable enable this check Display Function Function detail Parameter setting 5 9 Default values Parameter specific functions 01 OC RES Select main parameter Conductivity Resistivity Cond 02 4 ELEC Select 2 4 EL system 2 Electrode measurement system 4 Electrode measurement system 2 El 0 10xC AIR START WAIT END Set cell constant Zero calibration Press NO to step through choice of multiplying factors on the second display 0 10xC 1 00xC 10 0xC 100 xC 0 01xC Press YES to select a factor Use gt ENT keys to adjust MAIN digits Zero calibration with dry cell connected Press YES to confirm selection Press YES to start after briefly displaying WAIT END will be displayed Press YES to return to commissioning mode cm POL CK Polarization check Polarization check off Polarization check on Not used IM 12D7B3 E H 5 10 Parameter setting 5 3 2 Temperature measuring functions Code 10 T SENS Code 11 TUNIT Code 12 T ADJ IM 12D7B3 E H Selection
73. tremely effective way of compensation Choose from standard matrix tables or configure your own to exactly suit your process Service This selection provides access to the service menu What follows are pictorial descriptions of typical frontplate pushbutton sequences for each parameter set ting function By following the simple YES NO prompts and arrow keys users can navigate through the process of setting range hold and service functions IM 12D7B3 E H Parameter setting 5 3 5 2 2 Range YOKOGAWA gt A EXA SsEc202 ves no AUU IP ERV z x IM 12D7B3 E H 5 4 Parameter setting 5 2 3 HOLD YHDL RH OFF DEI No NO rir U LILI KH mH XTEMP KH LIN IN Set HOLD fixed value j a j HOLD aan Su AH LIT AH FIX No HOLD active ere TE ASERV NO YES IM 12D7B3 E H Parameter setting 5 5 5 2 4 Temperature comp
74. ues of the conductivi ty values In the example mentioned above the contact will close at an uncompensated resistivity of 1 1 76 uS cm 0 568 MQ cm IM 12D7B3 E H 9 2 USP 9 4 Setting up SC202 for USP First enable USP in service code 57 Change the setting from O default to 1 enabled This activates uncompensated conductivity in the display menu The E13 feature is also enabled For E13 the FAIL flag is triggered when the uncompensated conductivity exceeds the relevant value in the graph Conductivity limit as a function of Temperature 2 Y ce o 2 0 o 2 50 75 100 Temperature in C Fig 9 1 IM 12D7B3 E H 10 SPARE PARTS Table 10 1 Itemized parts list Description Part no Cover assembly including window gasket and fixing screws K1542JZ Window K1542JN Internal works assembly general purpose Internal works assembly intrinsically safe K1544DJ K1544DK Digital display board K1544DB Analogue input board general purpose Analogue input board intrinsically safe K1544SK K1544SE Ribbon cable K1544PH EPROM K1544BJ Lithium cell battery K1543AJ Terminals block of 3 K1544PF 11 Housing Gland set one gland including seal and backing nut K1542JL K1500AU 12 Text plate general purpose version only K1544BC
75. ues the EXA checks the signal from the cell to search for distortion which is typical of capacitive or polarization errors If the difference between pulse front and pulse rear is gt 20 an error E1 will be dis played and the FAIL flag in the display is activated In service code 05 it is possible to turn this check on and off IM 12D7B3 E H 8 2 Troubleshooting The following error message table gives a list of possible problems that can be indicated by the EXA Table 8 1 Error Codes Error description Possible cause Suggested remedy Polarization detected on cell Sensor surface fouled Conductivity too high Clean sensor and calibrate Replace sensor Temperature coefficient out of limits 0 3 590 9C Incorrect field calibration of TC Re adjust Set calculated TC Calibration out of limits Calibrated value differs more than 20 of nominal value programmed in code 08 Check for correct sensor Check for correct unit uS cm mS cm kQ cm or MQ cm Repeat calibration Matrix compensation error Wrong data entered in 5x5 matrix Re program Conductivity too high or resistivity too low Limits set in service code 54 Incorrect wiring Internal leakage of sensor Defective cable Check wiring 3 5 Replace sensor Replace cable Conductivity too low or resistivity too high Limits set in service code 54 Dry sensor Incorrect wiring Defective cable Immerse sensor Check wiring 3
76. y of the sensor If the calibrated cell constant differs more than 20 from the nominal cell constant error E3 is displayed IM 12D7B3 E H 6 3 Calibration with HOLD active Calibration 6 3 Press the MODE key The legend CALIB appears and the YES NO key prompt flags flash L e E g Ma H D D yy _ Ew Ey Put the sensor in standard nal E e solution Press YES Set the value using the gt n ENT key Select the flashing digit with the gt key Increase its value by pressing the akey When the correct value is displayed press ENT to enter the change After briefing displaying WAIT the CAL END message appears The calibration is now complete Put the sensor back in the process and press YES HOLD will be displayed Press NO to turn off HOLD and return to the measuring mode JJJ IN al Al uS cm HUL J gt IM 12D7B3 E H IM 12D7B3 E H Maintenance 7 1 7 MAINTENANCE 7 1 Periodic maintenance for the EXA 202 transmitter The EXA transmitter requires very little periodic maintenance The housing is sealed to IP65 NEMA 4X standards and remains closed in normal operation Users are required only 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 pushbuttons If the window becomes soi

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