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2-wire Type pH/ORP(Redox)

1. Note Display shows Return to maintenance the value as at the time mene of taking the sample Set the value using the gt ENT key Select the flashing digit with the gt key Increase its value by pressing key When the correct value is displayed press ENT to enter the change YES IM 12B07D02 01E Maintenance 7 1 7 7 1 Periodic maintenance for the EXA transmitter The 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 win dow is kept clean in order to permit a clear view of the display and allow proper operation of the push buttons If the window becomes soiled clean it using a soft damp cloth or soft tissue To deal with more stubborn stains a neutral detergent may be used NOTE Never used harsh chemicals or solvents In the event that the window becomes heavily stained or scratched refer to the Customer Maintenance Parts Lists for replacement part numbers When you must open the front cover and or glands make sure that the seals are clean and correctly fit ted when the unit is reassembled in order to maintain the housing s weatherproof integrity against water and water vapor The pH measurement uses high impedance sensors and may otherwise be prone to problems
2. YES n YES Return to measuring mode measuring mode IM 12B07D02 01E 6 6 Calibration 6 5 4 Sample calibration X lt APHSG 2 YOKOGAWA Press the MODE key The legend AUT CAL appears and the YES NO key prompt flags flash Press NO The display MAN CAL appears Press NO SAMPLE appears Press YES to start calibration HIITI 11 FILI EOI TE n L MINIT CII TIL s NO Press YES at the same time as taking sample for analysis PH 202 now continues to measure control as before SAMPLE flashes to indicate that data is stored waiting for input of analyzed value IM 12B07D02 01E Calibration 6 7 When the laboratory analysis is completed the data is entered by first pressing MODE then following the sequence below Return to maintenance menu For first calibration of a new sensor To calibrate ORP or rH Note Display shows the value as at the time of taking the sample NO or YES
3. 7 2 8 Troubleshooting as eee ee ee 8 1 itt ee vide 8 2 8 1 1 Off line calibration checks e crt eterne nete cua v ee Le Ra es 8 2 8 1 2 On line impedance 8 2 9 Spare Parts 9 1 12 07002 01 10 Appendix 10 1 10 1 User setting ach ae eat ase dete aaa 10 1 10 2 Configuration checklist for 202 10 3 10 3 Setup for sensor 10 4 10 3 1 EE 10 4 10 3 2 Selection of measurement and reference electrode 10 4 10 3 3 Selecting a temperature 10 4 10 4 Set up for other 10 5 10 5 Set up for Pfaudler Type 18 sensor 10 6 10 5 1 General Set Up rrr rni pi i ea etn deor 10 6 10 5 2 Calibration set 4 10 6 10 6 Device Description DD menu 10 7 Glossary Dum iuc bd qc 11 1 1212125 M 11 1 Tl 2 Wining di
4. Tov xperaleote o nyiss oxeruk Ex TOTLK YAWOOA TAPAKAAOVLE ETLKOWOV OTE LE TO TANTLETTEPO ypageto Yokogawa AVTLTPOTWTO TNS IM 12B07D02 01E CO V amp etky n vody obsluhu pre pr stroje s ATEX Ex su dispoz cii v jazyku anglickom nemeckom a franc zskom V pr pade potreby n vodu pre Ex pr stroje vo Va om n rodnom jazyku skontaktujte pros m miestnu kancel riu firmy Yokogawa V echny u ivatelsk p ru ky pro v robky na n se vztahuje nev bu n schv len ATEX Ex jsou dostupn v angli tin n m in a francouz tin Po adujete li pokyny t kaj c se v robk s nev bu n m schv len m ve va em lok ln m jazyku kontaktujte pros m va i nejbli reprezenta n kancel Yokogawa QD Visos gamini ATEX Fx kategorijos Eksploatavimo instrukcijos teikiami angl vokie i ir pranc z kalbomis Nor dami gauti prietais Ex dokumentacij kitomis kalbomis susisiekite su artimiausiu bendrov s Yokogawa biuru arba atstovu Cw Visas ATEX Ex kategorijas izstr d jumu Lieto anas instrukcijas tiek pieg d tas angiu vacu un fran u valod s Ja 1 Ex ieri u dokument ciju cit valoda Jums ir j sazin s ar firmas Jokogava Yokogawa tuvako ofisu vai parstavi K ik ATEX Ex toodete kasutamisjuhendid on esitatud inglise saksa ja prantsuse keeles Ex seadmete muukeelse dokumen
5. Back to the Top IM 12B07D02 01E 4 6 Operation 4 5 3 Display functions pH rH Service Code 01 Set for pH on parameter 2 Temp Display 6 rH Display Service Code 02 Set to rH p See Man Cal Chapter 6 Current Output 6 Pot pH Sensor Slope pH Sensor See Man Imp check Chapter 5 As Pot ORP See Temp Menu Chapter 5 Impedance Input 1 mu 29 Hold Menu Chapter 5 Impedance Input 2 Software Release Version IM 12B07D02 01E Parameter setting 5 1 5 PARAMETER SETTING 5 1 Maintenance mode 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 window in the instrument cover Press the MODE key once to enter this dialog mode Note At this stage the user will be prompted for pass code where this has
6. 2 12 2 10 Control Drawing of PH202S FF PB Specification 2 13 2 11 Control Drawing of 2025 FF PB Specification vB ts a p i D 2 14 2 12 Control Drawing of PH202S FF PB Specification FM Intrinsically safe 2 2 16 2 13 Control Drawing of PH202S FF PB Specification Non incendive Entity 2 18 2 14 Control Drawing of PH202S FF PB Specification FM Non ncendive FNICO 2 2 2 19 2 15 Control Drawing of PH202S FF PB Specification CSA 2 20 3 Installation And 4 444 2 4 10001111 3 1 3 1 Installation and dimensions 3 1 3 1 1 Installation Site 2 3 1 3 1 2 Mounting 0 cod rb a 3 1 3 2 PIBDAIIOE 3 3 3 2 1 Cables terminals and 3 3 3 3 Of SENSO 3 4 3 3 1 General 3 4 3 3 2 Additional precautions for installations in hazardous ar
7. Screen Core Screen 4 a e zt p er 21 9 017 leloj 210 8 2 22 222 22 arp p pr pa pape 15 Brown Co axial Cable Co axial cable EXA pH TRANSMITTER CONVERTER WF10 Cable 12 blue Co axial cable brown 11 red Fig 3 11 Connection of WF10 extension cable and BA10 BP10 junction box NOTE See page 3 12 for termination for WF10 cable 3 6 4 Connection VP type sensor in combination with EXA pH gt Connections normal pH PD fF lt a gt pH ref LE temp A 15 13 0 14 11 12 5 3 63 gt Connections differential LE temp A 15 B 14 C 13 D 17 E 11 F 12 S 3 or 63 IM 12B07D02 01E 3 12 Installation and wiring 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 Strip 9 cm of the outer black insulating material taking care not to cut or damage internal cores 4 3 9 gt heat shrink remove insulation Fig 3 12a 3 Remove loose copper screening and cut off the cotton packing threads as short as possible 4 Strip insulation fr
8. IM12B07D02 01E Parameter setting 5 9 HOLD value set return to commissioning menu YES Set HOLD fixed value for mA output IM12B07D02 01E 5 10 Parameter setting 5 2 3 Service PHOS YOKOGAWA Example Service Code 01 Select main parameter ri LI for pH i for ORP With the gt ENT keys Wait screen is displayed commissioning menu briefly before returning to XPH RP XPHORP IM12B07D02 01E Parameter setting 5 11 5 3 Notes for guidance in the use of service coded settings Don t set or input service code numbers other than the code numbers defined in this manual Setting an undefined service code may make the transmitter malfunction When an undefined service code is input by some accident push the MODE key and escape from the service level 5 3 1 Parameter specific functions Code 01 Code 02 pH ORP PRM 2 Code 03 amp 04 Z1 CHK Code 05 amp Z2 CHK CAL CK Choose the main measuring parameter The option of the ORP input is used with an inert metal electrode as measuring sensor which gives a reading directly in millivolts This signal can then
9. 11 14 11 6 3 Supplement of temperature sensor 11 15 11 6 4 Auto Return etri 11 15 Uu c CALEND EE 11 15 11 6 6 How to cancel sample sss 11 15 12 Appendix 3 QUALITY 11 12 1 12 1 PH202G PH202SJ 2 Wire pH ORP 12 1 12 2 P2023 2 M re pH ORP Transmitter eg bebe dedos 12 5 12 3 PH202G 2025 2 Wire pH ORP Transmitter 2 ciento tins etc D 12 9 12 4 PH202G 2025 2 Wire pH ORP Transmitter Probus Om ANON 12 13 Customer Maintenance Parts List PH202G Style S3 CMPL 12B07D02 03E Customer Maintenance Parts List PH202S Style S3 CMPL 12B07D02 23E i IM 12B07D02 01E 12 07002 01 Electric discharge The EXA analyzer contains devices that can be damaged by electrostatic discharge When servic ing this equipment please observe proper pro cedures to prevent such damage Replacement components should be shipped in conductive pack aging Repair work should be done at grounded workstations using grounded soldering irons and wrist straps to avoid elec
10. IM12B07D02 01E 5 4 Parameter setting 5 1 3 Manual activation of HOLD lt NO YES YES Note The HOLD feature must first be activated in the commissioning mode section 5 2 2 IM12B07D02 01E Parameter setting 5 5 5 1 4 Manual impedance check Note The manual impedance start is available when the sensor impedance measurement is enabled in Service Code 3 and 4 This enables the impedance data to be updated immediately after a maintenance event e g replacing an electrode YOKOGAWA MODE c3 Return to measuring mode after updating impedance check IM12B07D02 01E 5 6 Parameter setting 5 2 Commissioning mode In order to obtain peak performance from the EXA you must set it up for each custom application Output range mA output is set as default to 0 14 pH OUTP For enhanced resolution in more stable measuring processes it may be desir able to select 5 10 pH range for example Service codes 31 and 35 can be used to choose output function on mA output Hold The EXA transmitter has the ability to hold the output during maintenance peri HOLD ods This parameter should
11. Nominal 50 A O D 60 5 mm 2 inch pipe 4 eps RRAR m TR e Figure 3 4 Internal view of EXA wiring compartment IM 12B07D02 01E 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 accordance 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 Loosen the four frontplate screws and remove the cover The terminal strip is now visible Connect the power supply Use the gland on the left for this cable Connect the sensor input using the gland on the right see fig 3 5 Switch on the power Commission the instrument as required or use the default settings Replace the cover and secure frontplate with the four screws Connect the grounding terminals tp protective earth The optional hose connection is used to guide the cables coming from an immersion fitting through a protective plastic tubing to the transmitter Noo BON 3 2 1 Cables terminals and glands The PH202 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 6 to 12 mm 0 24 to 0 47 inches Sensor cable gland Power Output cable gland terminal Figure 3 5 Glands to be used for cabling IM 12B07
12. for maintenance interval time exceeded System not maintained in Perform maintenance preset time period Reset interval E17 Output span too small lt 1pH Incorrect configuration by user Reprogram E18 Table values make no sense E19 Programmed values outside acceptable limits Incorrect configuration by user Reprogram E20 All programmed data lost Fault in electronics Contact Yokogawa Very severe interference E21 Checksum error Software problem Contact Yokogawa E23 Zero point outside limits Sensors are aged or polluted Check buffer solution Mistake in calibration Recalibrate at pH7 Replace sensor IM 12B07D02 01E Spare parts 9 1 9 SPARE PARTS See Customer Maintenance Parts List IM 12B07D02 01E 10 1 10 APPENDIX 10 1 User setting table FUNCTION SETTING DEFAULTS USER SETTINGS Parameter specific functions 01 PH ORP 0 pH 02 PRM2 0 Off 03 Z1 CHK 1 1 1 High range TC on check on 04 72 0 0 1 Low range TC off check off no TC 05 CAL CK 1 1 AP on Slope on Temperature functions 10 T SENS 0 Pt1000 11 T UNIT 0 C 12 T ADJ None 13 T COMP 0 Off 0 00 pH 10 C Calibration functions 20 At SEC 5 Sec 0 02 pH 21 AS LOW 120 mV AS HI 120 mV 22 SLLOW 70 SL HI 110 23 ITP 7 00 pH SLOPE 10
13. for 8 55kO NTC sensor max 120 C Output signal 4 20 mA loop powered isolated from input maximum load 425 at 24 V DC With the possibility of 21 mA FAIL signal burn up and 3 6 mA burn down when HART or distributor comm is non used 3 9 mA burn down when HART or distributor comm is used E Temperature compensation Range 30 C to 140 C for 8 55 sensor 10 C to 120 C Sensor types Pt100 Pt1000 PTC 5 1 PTC 8 55 NTC 3500 PTC 6 8 PTC 10kQ PTC Automatic or manual compensation to Nernst equation Process compensation by configura ble coefficient Adjustable ITP Iso thermal point of intersection F Calibration Semi automatic using tables in transmitter for pH 4 7 amp 9 buffer solutions or using user defined tables with automatic check of meas urement stability Manual using standard sample by correcting reading to value of standard Calibration by slope and asymmetry potential setting IEC746 2 G Logbook Software record of important events and diag nostic data Available through HART link Specification 2 1 with key diagnostic information available in the display H Serial communication Bi directional HART digital communication superimposed on the 4 20 mA signal Display Custom liquid crystal display with a main dis play of 3 1 2 digits 12 5 mm high Message display of 6 alphanumeric charac ters 7 mm high
14. li ImayY 400 Applicable standard IEC 60079 15 2001 Ui Vmax 31 5 V 100 mA IEC 60079 0 2004 1 2 W 22 nF Li 35 pH FU 1 Certificate IECEx KEM 06 0052 IECEx IECEx Intrinsically safe see Note Scheme Ex nA nL Temp Class T4 Amb Temp 10 to 55 IECEx Intrinsically safe P TE Amb Mri d Applicable standard IEC60079 0 60079 11 Uiz31 5 V Ci 22 nF Liz35 uH Note IEC60079 26 Eps Certificate IECEx KEM 06 0052X Zone 0 Ex ia Item Description Code Temp Class 2 pis T Eu Intrinsically safe Approval TUS A ELS Ci od F LEUR Applicable standard FM3600 FM3610 FM3810 FES V BITISH MEEPS Intrinsically Safe for Class Division 1 Groups ABCD Description Code Class Zone 0 AEx ia IIC Temp Class T4 Amb 10 to 55 or CENELEC ATEX KEMA Intrinsically safe Approval Intrinsically Safe Apparatus Parameters Applicable standard EN60079 0 EN50020 V Imax 250 mA CENELEC Entit ATEX EN60079 26 1 Pmax 1 2 W Ci 220 pF Li 0 uH Certificate 07 0048 X Facto FISCO Vmax 17 5 V Imax 380 mA Entity Ex ia Group Il Category 1G P ry Pmax 5 32 W Ci 220pF Li 0 uH Temp Class T4 Amb Temp 10 to 55 C Mutual FM Ui 24 V 250 mA 1 2 W Ci 220 pF
15. 1 means Analog output LRV means Lower rangeval URV means Upper rangeval 1 Process variables gt 1 PV 2 Temp 3 PV rnge Level 3 menu 2 Diag Service gt 3 Basic setup 4 More pr var gt 1 Slope 2 Aspot Note PV means of output range 1 Status 1 Poweru 2 Hold gt 1 Hold status p 2 Hold fnc 2 Powerdwn 3 Hold type 3 Defaults 4 Hold fix 4 Lg Erased 5 Low range 3 Temp man gt 1 T meas 6 High range 2 Man temp 7 Hold on 4 Logbook gt 1 Logbook conf 9 Hold off 2 Logbook 1 B Enron 3 Logbook 2 5 Calibrate gt 1 Sample Man Temp 2 Manual Cal PV Aspot 6 Loop test Aspot 2 Slope 1 Tag Temp coef 2 Device information 1 Date 21 2 Descriptor 22 3 Message Stab time 4 Write protect ETP 5 Manufacturer Zero pnt 6 Dev id New sensor One p cal Two p cal Level 4 menu Note HART protocol DD files can be downloaded by following URL http www yokogawa com an download an dl fieldbus 001en htm IM 12B07D02 01E Continued next page Continued Appendix 10 9 Level 1 menu Level 2 menu Level 3 menu Level 4 menu 4 Detailed setup gt 5 Review 3 Cal specific 1 Param specific gt
16. Descriptor Message Write protect Detailed Setup Param Specific second parameter Impedance input1 Temp comp Imp check ON LINE MENU Imp limits lineata Device setup Temp comp Primary value Imp check Analog output Calibration check Imp limits Lower rangeval Temp Spec m Temp sensor Upper rangeval Temp unit Temp comp Temp coeff Calibration Stability Stable time Stable pH Aspot Zeropoint Aspot low limit Aspot high limit Slope __ Slope value Slope low limit Slope high limit ITP Buffer Buffer 4 4 Buffer40 C 80 Buffer 7 Buffer 7 name Buffer70 80 Output function 4 MA function Buffer 9 Buffer name Burn function Buffer90 80 C Table table 096 table 10096 Exa user interf Error programming Error 4 1 Error 16 Maintenance timer Timer on off Reload value Display Display resolution Auto return Man impedance Review Manufacturer Passcode I Maintenance Distributor Commissioning Model Service Meas type etc etc IM 12B07D02 01E 10 8 Appendix Menu structure for HHT 375 shown below ON LINE MENU Level 1 menu Level 2 menu Device setup PV AO1 LRV URV Note PV means Primary value
17. Selection of the temperature compensation sensor The default selection is the Pt1000 Ohm sensor which gives excellent precision with the two wire connections used The other options give the flexibility to use a very wide range of other pH 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 calibration 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 Process compensation automatically allows for changes in the pH or ORP of the process with temperature The characteristic of each process will be different and the user should determine if this feature is to be activated and what compensation figure to choose The compensation is given in pH per 10 C or mV per 10 C The standard temperature is 25 C fixed value in setting the temperature compensation Example For pure water with an alkali dose e g boiler feed water a coefficient of approx 0 35pH can be expected However applications vary and a simple test will determine what if any coefficient is suitable for the process IM12B07D02 01E 5 14 Parameter setting lt
18. gt 1 Disp res 2 Auto Ret 3 Passcodes 1 Maintenance 2 Commissioning 3 Service Level 5menu Level 6 menu Change Exit Change Exit Change Exit Change Exit 4 0 80 7 0 C 80 C Buffer 9 name 0 C 80 C IM 12B07D02 01E 10 10 Appendix 12 07002 01 Glossary pH H ORP rH Asymmetry potential Slope ITP Zero point Glossary This is a logarithmic function of the Hydrogen ion activity concentration This provides a quick indication of the acidic or alkaline behavior of a dilute solution Normally measured on a scale of 0 14 pH where low numerical values are acidic 0 is approximately 1 Normal acid and high numbers are alkaline 14 is approxi mately 1 Normal NaOH The neutral point is pH 7 Defined by Nernst in the following equation E Eo RT nF x Ln H E measured potential R gas constant T absolute temperature n valence F Faraday number Ln Napierian logarithm H activity of the Hydrogen ion Eo Reference potential Oxidation reduction potential is a measure of oxidizing power of a solution The greater the milli Volt value with a negative polarity the greater the oxidizing power Reducing power is indicated by positive values of mV T
19. Intrinsically safe output parameters maximum external parameters terminal 11 and 17 14 4 V lo 32 3 mA 0 12 W Co 600 nF Lo 34 mH Note 2 Installation Electrostatic charges on the display window shall be avoided external earth connection facility shall be connected reliably instrument modification or parts replacement by other than authorized representative of Yokogawa Electric Corporation and will void NEPSI Intrinsically safe certification user shall not change the configuration in order to maintain ensure the explosion protection performance of the equipment Any change may impair safety For installation use and maintenance of the product the end user shall observe the instruction manual and the following standards GB50257 1996 Code for construction and acceptance of electric device for explosion atmospheres and fire hazard electrical equipment installation engineering GB3836 13 1997 Electrical apparatus for explosive gas atmospheres Part 13 Repair and overhaul for apparatus used in explosive gas atmospheres GB3836 15 2000 Electrical apparatus for explosive gas atmospheres Part 15 Electrical installations in hazardous area other than mines GB3836 16 2006 Electrical apparatus for explosive gas atmospheres Part 16 Inspection and maintenance of electrical installation other than mines IM 12B07D02 01E mA HART communication A Input
20. Software X National Instruments NI FBUS configurator L Hardware F BUS interfaces from National Instruments AT FBUS PCMIA FBUS M Other control systems YOKOGAWA PRM DTM moou IM 12B07D02 01E 2 6 Specification 2 3 Model and suffix codes 1 2 Wire pH ORP Transmitter Non explosionproof type Model Suffix Code Style 3 Option Code Description PH202G 2 Wire Transmitter 1 mA with HART Europe type mA with HART Canada type mA with HART North America type Language Option Mounting Hardware Hood Tag Plate Conduit Adapter SS Ce M PE Profibus ID FF TOTIS Japanese 2 English IU Pipe wall mounting bracket Stainless steel IPM Panel mounting bracket Stainless steel IH Hood for sun protection Carbon steel 2 Hood for sun protection Stainless steel ISCT Stainless steel tag plate IAFTG G 1 2 ANSI 1 2 NPT Screw terminal 2 Epoxy baked finish 3 1 The PH202G can be also used as ORP transmitter Setting can be made the field 2 It can be specified when the suffix code A is selected 3 The housing is coated with epoxy resin 2 2 Wire pH ORP Transmitter Explosionproof type Model Suffix Code Style S3 Option Code Description 202 2 Wire pH ORP Transmitter 1 Intrinsic safe mA with HART
21. i amp amp 18 H INSPECTION ITEM R RESULT amp 7 GR 100M Q 500V DC BETWEEN POWER SUPPLY TERMINALS AND EARTH TERMINAL G 100M Q OR MORE 500V DC 11917 f amp 7 A8 G f 100M Q 500V DC BETWEEN INPUT TERMINALS 11 TO 17 AND EARTH TERMINAL G 100M Q OR MORE 500V DC f amp c7 A sT Gm 600V 2 BETWEEN POWER SUPPLY TERMINALS AND EARTH TERMINAL G 600V AC 2 SEC AJ 011917 A sth G f 600V 2 BETWEEN INPUT TERMINALS 11 TO 17 AND EARTH TERMINAL G 600V AC 2 SEC 11917 f amp BR 600V 2 BETWEEN INPUT TERMINALS 11 TO 17 AND POWER SUPPLY TERMINALS 600V AC 2 SEC ACCURACY 0 3 PT1000 amp m INDICATION riu REFERENCE Xi ACTUAL ERZ ERROR 92168 gt 10973 5 1 14983 4 0 01pH ACCURACY 0 01 RABE INPUT VOLTAGE EETA EAE mV REFERENCE ACTUAL ERROR 4141 L 00 03 X m INDICATION mV INPUT VOLTAGE TE SERI R mV REFERENCE ACTUAL ERROR L9 0 1 14 1500 po FARE AMBIENT TEMP amp HUM amp KBE APPROVED BY QIC 12B07D02 21 Ed1 Mar 2007 Appendix 12 9 12 3 202 2025 2 Wire Transmitter Fieldbus Communication Quality PH202G 2025 Inspection 2 Wire pH ORP Transmitter Standards Fieldbus Communication 1 Scope This
22. 1 2 W Ci 220 pF 0 uH CSA Non incendive safe Approval or lECExintinsicalysale PN B Applicable standard IEC 60079 0 IEC60079 11 C322 Nodo ABUS i 1 60073 26 1 680073 27 C22 2 No 213 M1987 22 2 61010 1 Scheme Certificate IECEx KEM 07 0026X Class Division 2 Groups ABCD pres or 155 Temp cla _ y Amb 10 to 55 C ExnA fllii emp Class T4 Amb Temp 10 to Si Ui 17 5 V 11 380 mA Pi 5 32 W 220 pF Liz0 uH Temp Class pis Ln e 2 D IECEx Type of protection Entity Ui Vmax 32 V Ci 220 pF Li 0 uH Applicable standard IEC 60079 15 2001 B FNICO Ui Vmax 32 V Ci 220 pF Li 0 uH IEC 60079 0 2004 Certificate IECEx 07 0026X Scheme Ex nA nL or Temp Class T4 Amb Temp 10 to 55 C T6 Amb Temp 10 to 40 E Ui 32 V Ci 220 pF Li 0 uH D IM 12B07D02 01E IEC EPS 2 4 Specification NEPSI Certification PH202S K NEPSI Intrinsically Safe Type Cert No GYJ081156X Applicable Standard GB3836 1 2000 GB3836 4 2000 Type of Protection and Marking Code Ex ia 4 6 Ambient Temperature T6 10 to 40 C 4 10 to 55 C Note 1 Entity Parameters Intrinsically safe input parameters terminal and Maximum Input Voltage Ui 31 5 V Maximum Input Current li 100 mA Maximum Input Power Pi 1 2 W Maximum Internal Capacitance Ci 22 nF Maximum Internal Inductance Li 35
23. Uo lt 17 5 V lo lt 380 mA Po lt 5 32 W gt 220 pF Ccable Lo20 Lcable Electrical data of the PH202S B amp PH202S D Type of protection n Supply and output circuit Maximum input voltage Ui 32 V Effective internal capacitance Ci 220pF Effective internal inductance Li 0 pH Sensor input circuit Maximum output voltage Uo 14 4 V Maximum output current 10 32 3 mA Maximum allowed external capacitance Co 3 5 uF Maximum allowed external inductance Lo 76 mH IM 12B07D02 01E 2 14 Specification 2 11 Control Drawing of PH202S FF PB Specification FM Intrinsically safe Entity FM Class I DIV 1 Group ABCD T4 for ambient temp lt 55 C ee i PH202S F Max cablelength 60 mtr or PH202S P Cable dia 3 12 mm l oz Sensor FM Approved Connections barrier Voc Vt 24 V 15 2 2 80 eer eee eee 15 H H Pc i certified i certified Terminator 1 Terminator Ca gt 220pF Ccable i i Laz0H lcabe i B O Exe ul d 1 2600 fF Division 1 Unclassified Location Classified Location Sensor s are of a passive type to be regarded as simple apparatus devices which neither store nor generate voltages over 1 5 V currents over 0 1 A power over 25 mW or energy over 20 uJ or are FM Approvals entity approved and meet connection requireme
24. User s EKA Manual Model PH202G Style 3 PH202S Style 3 2 wire Type pH ORP Redox C Transmitter IM 12B07D02 01E vigilantplant YOKOGAWA IM 12B07D02 01E 11th Edition Yokogawa Electric Corporation 5 1 Introduction And General Description 1 1 1 1 1 1 1 3 2 PH202 Specifications qe 2 1 CNNC 1 eem 2 1 2 2 Operating specifications a et 2 2 2 3 Model and suffix COGGBS saci vanecsaccatvecnbacdessinassaaddaceesddacedeanesowitasarasndecaxacadeccdes 2 6 2 4 Control Drawing of PH202S mA HART Specification IECEXx 2 7 2 5 Control Drawing of 2025 mA HART Specification 2 8 2 6 Control Drawing of PH202S mA HART Specification FM Intrinsically safe design 2 9 2 7 Control Drawing of 2025 mA HART Specification FM Non incendive 4 9 enne nnn 2 10 2 8 Control Drawing of PH202S mA HART Specification 2 11 2 9 Control Drawing of PH202S FF PB Specification IECEX
25. YEAR MONTH DAY Code 62 ERASE 5 3 7 General Code 70 LOAD Code 79 CUST D 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 adress 00 for point to point communication with 4 20 mA transmission Address 01 to 15 are used in multi drop configuration fixed 4 mA output For the Yokogawa PC202 software package the default settings match the software as shipped 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 Load customer defaults This code allows the instrument to be returned to the factory default set except that buffer tables code 24 25 26 are unchanged 5 3 8 Test and setup mode Code 80 TEST Not used 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 performance of the unit IM12B07D02 01E 5 22 Parameter setting Code Display Function Function
26. set time interval 1 250 days hold last or hold fix set temperature coefficient 2 x 50 events codes 24 25 amp 26 code 12 code 27 code 55 hold code 13 code 61 62 IM 12B07D02 01E 10 4 Appendix 10 3 Setup for sensor compatibility 10 3 1 General The inputs of the EXA transmitter are freely programmable for ease of installation Standard glass pH electrodes Ag AgCl reference electrodes and Pt100 and Pt1000 temperature sensors need no special programming The EXA indicates a fault with a signal in the display field if there is a mismatch of sen sors in the connection 10 3 2 Selection of measurement and reference electrode The EXA PH202 is preprogrammed to accept industry standard glass electrodes and reference elec trodes The unit initiates checks for asymmetry and slope during calibration The on line impedance checking function has been upgraded in this most recent EXA release The EXA is universally compatible with all types of electrodes such as enamel and antimony In such systems however the specific isothermal point of intersection ITP slope pH mV and asymmetry potential can be set for the type of electrode 10 3 3 Selecting a temperature sensor The EXA PH202 reaches its highest accuracy when used with the Pt1000 temperature sensor This ele ment offers a 10 fold increase in resistance dependence over the Pt100 sensor Choice of temperature sensor is made in the Service Codes found in Ch
27. 3 11 12 14 17 13 LOW IMP oH M 15 16 SUPPLY L TEMP LE INPUT 2 INPUT 1 T 4 G 11 12 14 17 13 LOW IMP ficu ime 15 16 suPPLY TEMP LE INPUT 2 INPUT 3 Fig 3 8 Jumper positions IM 12B07D02 01E 3 8 Installation and wiring or G 11 12 14117 13 15 16 SUPPLY L TEMP LE INPUT 2 INPUT 1 Figure 3 9 Terminal identification labels 3 6 Sensor wiring Refer to figure 3 10 which includes drawings that outline sensor wiring For sensor wiring of PHSEFP PH8ERP PH8EHP OR8EFG OR8ERG 405 406 485 DPA405 DPA406 DPA485 HF405 DPAS405 DPAS485 and FU20 see APPENDIX 2 Chapter 11 The EXA analyzers can be used with a wide range of commercially available sensor types both from Yokogawa and other manufacturers The sensor systems from Yokogawa fall into two categories the ones that use a fixed cable and the ones with separate cables To connect sensors with fixed cables simply match the terminal numbers in the instrument with the iden tification numbers in the instrument on the cable ends The separate sensors and cables are not numbered but instead use a color coding system The elec trodes have a colored band incorporated in the label on the connection cap Red for measuring electrodes both pH and ORP Yellow for reference electrodes Blue for combined sensors with both measuring and
28. 55 C AMB TEMP 10 55 C AMB TEMP 410 55 C STYLE STYLE STYLE No No No A Ta 90 GN SEE USER S MANUAL BEFORE USE YOKOGAWA YOKOGAWA YOKOGAWA Made in Japan Tokyo 180 8750 JAPAN Made in Japan Tokyo 180 8750 JAPAN Made in Japan Tokyo 180 8750 JAPAN O O n200 O O O FISCO field device PH ORP TRANSMITTER PH ORP TRANSMITTER No IECEx 07 0026X MODEL PH202S F MODEL PH202S P SUFFIX SUFFIX SEE CONTROL DRAWING No KEMA 07 0048 X uo ExiallC T4 IP65 SUPPLY FISCO SUPPLY FISCO SEE CONTROL DRAWING 17 5VDC 380mAI5 32W 17 5VDC 380mA 5 32W or 24VDC 250 1 2 or 24VDC 250mA 1 2W AND AEx ia OUTPUT FF TYPE111 511 OUTPUT PROFIBUS PA teil CONTROL DR NING Li 0 pH Ci 220pF Li 0 uH Ci 220pF APPROVED IKE025 A10 PA to P 7 AMB TEMP 10 55 C AMB TEMP 410 55 C CL I DIV 1 ABCD STYLE STYLE 5 Ex ia IIC T4 No No SEE CONTROL DRAWING 1881741 65 35 2 sbstuton de composants Made in Japan Tokyo 180 8750 JAPAN Made in Japan Tokyo 180 8750 JAPAN ur TUB nz00 2025 O O O PH ORP TRANSMITTER PH ORP TRANSMITTER FNICO field device No IECEx KEM 07 0026 MODEL PH202S B MODEL PH202S D EX PALM Tt for Taso SUFFIX SUFFIX CONTROL DRAWING No KEMA 07ATEX0049 EEx nA nL T4 36 EEx nl IC T6 for Ta 4o c SEE CON
29. ATEX Intrinsic safe mA with HART CSA Intrinsic safe mA with HART FM Intrinsic safe mA with HART NEPSI Intrinsic safe Profibus ATEX CSA FM Intrinsic safe FF ATEX CSA FM Non incendive FF ATEX CSA FM 3 Non incendive mA with HART ATEX CSA FM 3 Non incendive Profibus ATEX CSA FM 3 SS Language Option Mounting Hardware Hood Tag Plate Conduit Adapter Japanese English Pipe wall mounting bracket Stainless steel Panel mounting bracket Stainless steel Hood for sun protection Carbon steel Hood for sun protection Stainless steel Stainless steel tag plate G 1 2 1 2 NPT Epoxy baked finish 2 1 The 2025 be also used as ORP transmitter Setting can be made in the field 2 The housing is coated with epoxy resin 3 When the instrument with Suffix Code B N D is used take measures so that the display window is not exposed to direct sunlight IM 12B07D02 01E Specification 2 7 2 4 Control Drawing of PH202S mA HART Specification IECEx Intrinsically safe design IEC Ex standard EX ia T4 for ambient temp lt 55 C EX ia or ib T6 for ambient temp lt 40 C Certified safety barrier or power Certificate nr IECEx KEM 06 0052X a 2025 pH ORP transmitter compatible 24 volts DC Nominal Su
30. Note 0 9 where Maintenance passcode On E 0 no passcode Commissioning passcode Off 0 Off 12111 22333 3 777 Commissioning passcode On 4 888 5 123 6 957 Service passcode 0 Off 7 331 8 546 9 847 Service passcode On 53 Err 4 1 Error setting Impedance low input 1 Soft fail 0 Impedance low input 1 Hard fail 1 1 Hard Err 5 1 Impedance high input 1 Soft fail 0 Impedance high input 1 Hard fail 1 1 Hard Err 4 2 Impedance low input 2 Soft fail 0 Impedance low input 2 Hard fail 1 1 Hard Err 5 2 Impedance high input 2 Soft fail 0 Impedance high input 2 Hard fail 1 1 Hard Err 07 Temperature too high Soft fail 0 Temperature too high Hard fail 1 1 Hard Err 08 Temperature too low Soft fail 0 Temperature too low Hard fail 1 1 Hard Err 09 pH out of range Soft fail 0 pH out of range Hard fail 1 1 Hard Err 11 Wash recovery check Soft fail 0 0 Soft Wash recovery check Hard fail 1 Err 16 Call for maintenance Soft fail 0 0 Soft Call for maintenance Hard fail 1 54 Not used 55 CALL M Call for maintenance Set time limit for calibration Off 0 0 Off Set time limit for calibration On Set valid maintenance period if On 250 days 56 DISP Display resolution Set pH decimal display 0 1 pH 0 Set pH decimal display 0 01pH 1 1 0 01 pH 57 59 Not used IM12B07D02 01E Parameter setting 5 21 5 3 6 Communication setup Code 60 ADDR Code 61 HOUR MINUT SECND
31. Press the key The message display will show SERV Press the YES key The message display will show CODE and the data display will show 00 with the first digit of O flashing Press the gt key once The second digit of 0 flashes Press the key once The data display will show 01 with 1 flashing Press the ENT key The message display will show PH ORP Press the key once The data display will change from 0 to 1 Press the ENT key Turn on power again In this state change the simulation input of the standard voltage generator as shown in Table 3 The corresponding data must be within the range Table 3 Simulation Input mV Data Display mV 1500 1500 1 0 0 1 1500 1500 1 Return to mode by following the steps below then the tests completed a b Press the key The message display will show SERV Press the YES key The message display will show and the data display will show 00 with the first digit of O flashing Press the gt key once The second digit of 0 flashes Press the key once The data display will show 01 with 1 flashing Press the ENT key The message display will show PH ORP Press the key once The data display will change from 1 to 0 Press the ENT key QIS 12B07D02 71E IM 12B07D02 01E Appendix 12 15 3 3 3 6
32. Two wire system 4 20 mA B Power supply PH202G up to 40 volts PH202S up to 31 5 volts Note The transmitter contains a switched power supply drawing its energy from the 0 4 mA section of the signal Consequently the 17 volt limit is applied at 4 mA The characteristic of the unit is such that above about 7 mA on the output the terminal voltage can drop to 14 5 volts without problem see figure 2 2 C Transmission Isolated output of 4 to 20 mA DC D Signal Maximum load 4250 see figure 2 1 Burn to signal failure acc NAMUR Recommendation NE43 18 01 1994 E Operating range 3 9 to 21mA F Communication 1200 Baud FSK modulated on 4 to 20 mA signal Configuration Local with 6 keys H Software Firmware based on Yokogawa stack 1 Hardware Yokogawa Modem F9197UB J Other Control systems Yokogawa PRM Rosemount AMS Siemens PDM K Hand Terminal Rosemount HHT 275 375 L Other control systems Yokogawa PRM Rosemount AMS Siemens PDM M Output span pH min 1 pH max 20 pH max 9096 zero suppression instrument is user programmable for linear or non linear pH ranges N Cable specification 0 5 mm diameter or 24 AWG over maximum length of 1500 m O DD specification The PH202 Device Description is available enabling communications with the Handheld Communicator and compatible devices PROFIBUS PA communications mooo Input signal Di
33. and 12 0 Check the current outputs Corresponding to the data display the current output must be within the range shown in Table 1 When the data display shows 12 0 pressing the ENT key causes the message display to show RIPPLE and the data display to remain unchanged Press the ENT key again The message display will show mA and the data display 16 0 Table 1 Data Display Current Output mA 4 0 4 0 02 12 0 12 0 02 20 0 20 0 02 Temperature Indication Check Following Section 3 3 press the ENT key until the message display shows PT1000 In this state change the resistance value of the decade resistance box as shown in Table 2 and check the data display The corresponding value on the data display must be within the range shown in Table 2 QIS 12B07D02 21E IM 12B07D02 01E 12 7 3 5 3 6 3 3 Table 2 Reference Temperature Resistance Box Resistance Data Display 20 921 6 20 0 0 3 25 1097 3 25 0 0 3 130 1498 3 130 0 0 3 Indication Check Following Section 3 4 press the ENT key until the message display shows PH INP In this state change the simulation input as shown in Table 3 by means of the standard voltage current source and check the data display The corresponding value on the data display must be within the range shown in Table 3 Tab
34. calibrations and programmed data changes By reference to this log users can easily evaluate diagnostic information to determine predictive maintenance schedules For example by monitoring the deterioration in the slope of the pH sensor it can be changed before a failure or process shutdown occurs IM 12B07D02 01E 10 6 Appendix 10 5 Set up for Pfaudler Type 18 sensor The PH202 is intended to measure with all sorts of pH sensors including the Pfaudler Type 18 sensor The Pfaudler design of dual membrane system uses two enamels of differing sensitivity The first a pH sensitive membrane and the second one that responds to Na and K and acts as a reference The analyzer has dual high impedance inputs which measure perfectly even with very high impedance sensors However the impedance measuring system diagnostics needs to be set up for best perform ance 10 5 1 General set up 1 Set impedance measuring hardware This is done by the use of links on the terminals adjacent to the input terminals For the Pfaudler system this means that the terminals should have the links disconnected in order to set for HIGH HIGH impedance measuring 2 Set the impedance check in software Use codes 03 amp 04 to enable the measurement and set for high impedance and configure appropriate limits Code 03 set to 1 0 1 low limit 1 Megaohm high limit 1 Gigaohm Code 04 set to 1 0 1 low limit 1 Megaohm high limit 1 Gigaohm 3 Set the temperature
35. 0 added and NEPSI Certification added to page 2 4 P 2 6 NEPSI suffix code of K added to the PH202S MS code CMPL 12B07D02 23E of PH202S S3 revised to 2nd edition some parts no deleted
36. 10 to 55 10 to 131 F C Storage temperature 30 to 70 20 to 160 F D Humidity 10 to 90 RH Non condensing F Housing Case Cast aluminum case with chemically resistant coating Cover Polycarbonate window Case color Off white Equivalent to Munsell 2 5Y8 4 1 2 Cover color Deep sea Moss green Equivalent to Munsell 0 6GY3 1 2 0 Power Output Grounding cable gland terminal IM 12B07D02 01E Cable and terminals The PH202 is equipped with terminals suitable for the connection of finished cables in the size 0 13 to 2 5 mm 26 to 14 AWG Cable entry 2 cable glands 1 2NPT The cable glands will form a tight seal on cables with an outside diameter in the range of 6 to 12 mm 0 24 to 0 47 inches Construction Weather resistant to 65 NEMA standards Mounting Pipe wall or panel mounting using optional hardware Weight Approx 1 6 kg G Shipping details Package size w x h x d 290 x 300 x 290 mm 11 5 x 11 8 x 11 5 in Packed weight approx 2 5 kg 5lb H Data protection EEPROM for configuration and logbook and lithium cell for clock Watchdog timer Checks microprocessor J Automatic safeguard Return to measuring mode when no keystroke is made for 10 min K Operation protection 3 digit programmable password L Sensor impedance checking Independent impedance check on measuring and reference sensor elements with temperature compensa
37. After calibration the unit checks the calculated asymmetry potential and the slope to determine if they are still within limits specified by the software The slow shift of asymmetry potential could signal a poisoning of the reference electrode system by the process The decrease of slope equals a decrease of sensitivity of the glass electrode or can show a coating buildup at the electrode The EXA makes a distinction among diagnostic findings All errors are signaled by the FAIL flag in the display Only faults in the measuring circuit can be set as HARD FAIL with Burn up or Burn down sig nals on the mA output What follows is a brief outline of some of the EXA troubleshooting procedures followed by a detailed table of error codes with possible causes and remedies NOTE The diagnostic function of the EXA gives a variable time interval between impedance checks up to 5 minutes When trouble shooting a manual impedance check can be initiated by following the procedure in section 5 1 4 IM 12B07D02 01E 8 2 Troubleshooting 8 1 Diagnostics 8 1 1 Off line calibration checks The EXA transmitter incorporates a diagnostic check of the asymmetry potential after a calibration has been completed This is a valid check for both manual and automatic calibration routines The actual value can be called up from the DISPLAY routine in the maintenance menu A large value often indicates poisoning or pollution of the reference system used
38. If the asymmetry potential exceeds programmable limits the EXA generates an error 2 The EXA also performs diagnostics to check for the slope of the pH electrode after automatic calibration is completed The actual value of the slope can be called up on the DISPLAY routine in the maintenance menu SL This value is an indication of the age of the electrode If the value stays within the limits of 70 to 110 percent of the theoretical value 59 16 mV pH at 25 C it is accepted Otherwise the unit gener ates an error Activation or deactivation of the asymmetry diagnostic check and slope check is made from the Service Codes See Chapter 5 or Chapter 10 Appendix 8 1 2 On line impedance checks The EXA has a sophisticated impedance checking system The sensors can be checked for their imped ance over a very wide range which makes the tool equally useful for glass enamel reference and metal ORP sensors The measurement is temperature compensated for the characteristic of the pH glass sensor In order to measure accurately over such a wide range it is necessary to split the range into two This is done by a pair of jumper settings high range and low range can be set on either input making the sys tem extremely flexible The following error message table gives a list of problems that are indicated when the high or low imped ance limits are exceeded for a sensor Such things as fouling breakage and cable faults are readil
39. Supply Po 1 2 Watt SENSOR S terminals 11 17 Functional earth Hazardous area Safe area lt i gt lt 2 Zone 0 or 1 Sensor s are of a passive type to be regarded as simple apparatus Electrical data of the 2025 Supply and output circuit terminals and Maximum input voltage Ui 31 5 V Maximum input current I 100 mA Maximum input power Pi 1 2 W Effective internal capacitance C 22 nF Effective 1nternal inductance Li 35 uH Sensor input circuit terminals 11 through 17 Maximum output voltage Uo 14 4 V Maximum output current 32 3 mA Maximum allowed external capacitance Co 600 nF for PH202S E C U Co 3 5 uF for PH202S N Maximum allowed external inductance Lo 34 mH for PH202S E C U Lo 76 mH for 2025 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 1solators and power supplies safety barrier shall be certified by notify body Installation should be in accordance with local installation requirements If use ordinary wirings the general purpose equipment must have Nonincendive Field Wiring terminal approved The Hand Held Communicator must be of a ATEX certified intrinsically safe type 1n case 1t is used on the intrinsically safe circuit in the hazardous area or of a ATEX certified non incendive type
40. Warning flags and units pH and mV J Power supply Nominal 24 volt DC loop powered system 202 17 to 40 volts see Fig 2 1 202 17 to 31 5 volts see Fig 2 2 K Maximum load resistance For the PH202G see Fig 2 1 For the 2025 see Fig 2 2 1 1150 1000 gt Possible Load Resistance Q gt 0 1718 20 25 30 35 40 Voltage gt Fig 2 1 Supply voltage load diagram for the PH202G F2 1E eps 800 200 Possible Load Resistance A e 12 16 20 24 28 32 Voltage V Fig 2 2 Minimum terminal voltage for the PH202S Note In this manual a sign appears if it concerns the PH202G S E C U N K IM 12B07D02 01E 2 2 Specification 2 2 Operating specifications A Performance pH Linearity 0 01 pH Repeatability 0 01 pH Accuracy 0 01 pH Performance ORP Linearity 1 mV Repeatability 1 mV Accuracy 1 mV Performance Temperature with Pt1000 Q Balco 5k1Q 3500 6k8Q PTC10kO amp 8k55Q Linearity 0 3 Repeatability 0 1 Accuracy 0 3 Performance Temperature with Pt100 Q Linearity 0 4 C Repeatability 0 1 Accuracy 0 4 C Note on performance specifications The following tolerance is added to above performance mA output tolerance 0 02 mA of 4 20 mA B Ambient operating temperature
41. accordance with the right table T03 ai S OFF light Push YES key IM 12B07D02 01E Appendix 12 1 12 APPENDIX 3 QUALITY INSPECTION 12 1 PH202G PH202SJ 2 Wire pH ORP Transmitter Quality PH202G PH202SJ Inspection 2 Wire Standards ire pH O ransmitter 1 Scope This inspection standard applies to the PH202G PH202SJ 2 Wire pH ORP Transmitter 2 Inspection Items 2 1 Insulation resistance test 2 2 Current output test 2 3 Temperature indication check 2 4 pH indication check 2 5 ORP indication check 3 Inspection Methods Standards and Conditions e Connect the testing circuit as shown in Figure 1 Allow the instrument to warm up for at least 5 minutes before conducting the tests For the connections for the insulation resistance test follow the instructions in Section 3 1 e Performance tests should be done in the inspection mode where the tests from Section 3 3 through Section 3 5 take place in sequence and cannot be retraced If the reconfirmation of a test is needed turn off the power to the transmitter turn on the power again and enter the inspection mode to restart the tests 3 1 Insulation Resistance Test As for the PH202G follow the instructions below 1 Apply 500 V DC between the power supply terminals shorted together and and the earth terminal The insulation resistance must be 100 or greater 2 Apply 500 V DC between the input terminals shorted tog
42. are available in English German and French Should you require Ex related instructions in your local language you are to contact your nearest Yokogawa office or representative Alle brugervejledninger for produkter relateret til ATEX Ex er tilg ngelige pa engelsk tysk og fransk Skulle De nske yderligere oplysninger om h ndtering af Ex produkter p eget sprog kan De rette henvendelse herom til den n rmeste Yokogawa afdeling eller forhandler Tutti i manuali operativi di prodotti ATEX con trassegnati con Ex sono disponibili in inglese tedesco e francese Se si desidera ricevere 1 man uali operativi di prodotti Ex in lingua locale met tersi in contatto con l ufficio Yokogawa pi vicino o con un rappresentante Todos los manuales de instrucciones para los ductos antiexplosivos de ATEX estan disponibles en ingl s aleman y franc s Si desea solicitar las instrucciones de estos articulos antiexplosivos en su idioma local debera ponerse en contacto con oficina el representante de Yokogawa mas cercano Alle handleidingen voor producten die te maken hebben met ATEX explosiebeveiliging Ex zijn verkrijgbaar in het Engels Duits en Frans Neem indien u aanwijzingen op het gebied van explosiebeveiliging nodig hebt in uw eigen taal contact op met de dichtstbijzijnde vestiging van Yokogawa of met een vertegenwoordiger Kaikkien Ex tyyppisten tuotteiden kayt ovat saatavilla engl
43. be interpreted to give information about the oxidation state of the process solution and derived information like the absence of a compound like Cyanide for example which is destroyed in oxidizing solutions Enable the use of a second measuring parameter simultaneously with pH the main parameter With the correct sensor e g FU20 ORP measurement is possible as parameter 2 With the same sensor rH measurement is possible as parameter 2 this is calculated from pH and ORP and is a value which gives the oxidizing power of the solution while compensating for the effect of pH This function is particularly useful for applications where both the pH and oxidation reduction potential of the process need to be known The availability of both measurements in a single system is convenient Note that in both cases a suitable sensor combination is needed to make this possible The Yokogawa 020 4 in 1 sensor can be used for this purpose or a combination of individual sensors Contact your local Yokogawa sales office for advice regarding applications and sensor selection The EXA PH202 has an impedance check capable of monitoring the impedance of all sorts of sensor systems In order to fine tune this diagnostic tool it is necessary to set it up to match the sensors used The default settings give a good setup for a conventional system comprising pH glass sensor and a reference electrode either as individual electrodes or as a combination style s
44. compensation sensor as 100 Ohm Platinum RTD with service code 10 Code 10 set to 1 100 Ohms Pt The system will now respond properly to the Pfaudler type 18 sensor and the other functions of the EXA analyzer will need to be set in the normal way to suit the use to which the loop is being put Output ranges control functions and alarms should all be set as described elsewhere in this manual 10 5 2 Calibration set up 4 The alternative Zero point calibration and display according to IEC 60746 2 may be enabled in service code 27 and set in the MAN CAL routine A value of 10 5 pH is a good starting point for the Pfaudler 18 sensor 5 Where lab test data are available for the sensor service code 23 can be used to set values for ITP amp Slope and As pot for parameter 2 when enabled This method can be useful for the type 18 sensor as it is not usual to perform regular calibrations on this system as with normal sensors This is because the system may well respond differently to ordinary buffers than with the process solutions The procedure is to determine the temperature response ITP and the sensitivity Slope of the sensor and enter these values in code 23 Because this is a rather complex procedure it is recommended instead to use the default settings of ITP 7 00 and Slope 100 and make a single point MAN CAL calibration in the process at the work ing temperature and at the normal operating control setpoint pH Thi
45. impedance limit x None K M or G High impedance limit x None K M or G Low High Temp comp off Temp comp on Imp check off imp check on Press NO to step through choice of units press YES to select units then use the gt AENT keys to set the value Press NO to step through choice of units press YES to select units then use the gt keys to set the value T5 3 1E eps Yokogawa sensors with the liquid earth electrode include the PH8EFP PH8ERP PH8EHP OR8ERG OR8EFG and FU20 The liquid earth electrode is inside the sensor and at the potential of the measured solution The liquid earth electrode is also used for an impedance check to determine if a functional sensor is connected Be sure to connect the wire from the liquid earth electrode to terminal 14 on the transmitter impedance check detects when the glass electrode is broken and also provides a check of junction contamination and junction clogging Such checks are qualitative rather than absolute and relatively loose high low limits for acceptable values are usually set In the measurement in low conductivity water such as pure water the impedance check does not work Set the impedance check function for the reference electrode to off in Service Code 04 If the sensor doesn t have a liquid earth electrode it s not possible to perform an automatic impedance check to determine if
46. inspection mode 1 Entering Service Code 87 a Press the key The message display will show OUTP Press the NO key until the message display shows SERV Press the YES key The data display will show 00 with the first digit of 0 flashing Press the key eight times The data display will show 80 with the first digit of 8 flashing Press the gt key once The data display will show 80 with the second digit of O flashing Press the key seven times The data display will show 87 with the second digit of 7 flashing g Press the ENT key The message display will show PASS 2 Setting Password 070 a Press the gt key once The data display will show 000 with the second digit of 0 flashing b Press the key seven times The data display will show 070 with the second digit of 7 flashing c Press the ENT key The message display will show HIF d Press the YES key 3 Checking the date and time a Press the ENT key The data display will show the date in day month year order b Press the ENT key The data display will show the time in hour minute second order c Press the ENT key The message display will show mA This is the inspection mode When the message display shows mA check the current outputs Each time the ENT key is pressed the value on the data display increases in steps of 4 0 like 4 0 8 0
47. inspection standard applies to the PH202G and 202 2 Wire pH ORP Transmitters Fieldbus specification 2 Inspection Items 2 1 Insulation resistance test 2 2 Dielectric strength test 2 3 Temperature indication check 2 4 pH indication check 2 5 ORP indication check 2 6 Fieldbus communication functional check Note Items marked with an asterisk may only be confirmed by a test certificate 3 Inspection Methods Standards and Conditions e Connectthe testing circuit as shown in Figure 1 Allow the instrument to warm up for at least 5 minutes before conducting the tests For the connections for the insulation resistance test follow the instructions in Section 3 1 and for the connections for the dielectric strength test follow the instructions in Section 3 2 e Use test equipment shown in Figure 1 or equivalent for the tests 3 1 Insulation Resistance Test 1 Apply 500 V DC between the power supply terminals shorted together and and the earth terminal G The insulation resistance must be 100 MO or greater 2 Apply 500 V DC between the input terminals shorted together 11 to 17 and the earth terminal G The insulation resistance must be 100 MO or greater 3 2 Dielectric Strength Test Required Only for PH202S Apply 600 V AC an AC voltage of substantially sinusoidal waveform with a frequency of 50 Hz or 60 Hz between the terminals shown below for at least 2 seconds The insulation must withstand this vo
48. interface certified i certified O Terminator iTerminator O Safe area Zone 0 or 1 Hazardous area Sensor s are a thermocouple RTD s passive resistive switch devices or is CSA entity approved and meet connection requirements e Electrical data of the PH202S F amp PH202S P Supply and output circuit Maximum input voltage Ui 24 V Maximum input current li 250 mA Maximum input power Pi 1 2 W Effective internal capacitance Ci 220 pF Effective internal inductance Li 0 pH or Maximum input voltage Ui 17 5 V Maximum input current li 380 mA Maximum input power Pi 5 32 W Effective internal capacitance Ci 220 pF Effective internal inductance Li 0 Sensor input circuit Maximum output voltage Uo 14 4 V Maximum output current lo 32 3 mA Maximum allowed external capacitance Co 600 nF Maximum allowed external inductance Lo 34 mH Any CSA approved 1 5 interface may be used that meets the following requirements Uo lt 24 lo lt 250 mA lt 1 2 W gt 220 pF Ccable Lo gt 0 uH Lcable or Uo lt 17 5 V lox lt 380 mA Po lt 5 32 W Co gt 220 pF Ccable Lo gt 0 pH Lcable Installation should be in accordance with Canadian Electrical Code Part or CEC Part 1 Maximum safe area voltage should not exceed 250 Vrms Electrical data of the PH202S B amp PH202S D non incendive For Class Div 2 Group ABCD the CSA approved 1 5 interface is not
49. may NOT be connected to ground at the distributor f 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 IM 12B07D02 01E 3 6 Installation and wiring 3 4 2 Connection of the power supply The terminal strip is accessed as was described in 3 2 1 Use the left hand gland to insert the supply output cable to the transmitter Connect the supply to the terminals marked and G as is indicated in figures 3 8 and 3 9 3 4 3 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 11 12 14 17 13 mO we 15 16 12 M 17 1 LOW IMP 45 16 TEMP LE INPUT 2 INPUT 1 TEMP LE INPUT 2 INPUT 1 iink J Uink J rd bl bl rd rd bl rd bl bl Green bk Yellow Red Blue D Colour code E pil c tem pH ORP ombi rd red p temp pH Ref bl blue bk black ORP Ref wt white SINGLE ELECTRODES Fig 3 7 Connection diagrams IM 12B07D02 01E Installation and wiring 3 7 3 5 Wiring the sensor system 3 5 1 Impedance measurement jumper settings NOTE It is important to dec
50. terminal 2 Between the input terminals shorted together 11 to 17 and the earth terminal G 3 Between the input terminals shorted together 11 to 17 and the power supply terminals shorted together and 3 3 Temperature Indication Check Connect the instruments as shown in Figure 1 and set them as follows Connect a shorting bar between terminals LOW and IMP Decade resistance box 921 6 O Standard voltage source 0 DC source 24 V DC Change the resistance value of the decade resistance box as shown in Table 1 The corresponding temperature indication must be within the range YOKOGAWA QIS 12B07D02 71E Yokogawa Electric Corporation 1st Edition Sep 2007 YK IM 12B07D02 01E 12 14 2 3 Table 1 Reference Temperature Resistance Box Resistance Data Display 20 921 6 20 0 0 3 25 1097 3 25 0 0 3 130 1498 3 130 0 0 3 3 4 pH Indication Check Set the instrument as follows Decade resistance box 10000 Change the simulation input value of the standard voltage generator as shown Table 2 corresponding pH data must be within the range Table 2 Check Point pH Simulation Input mV Data Display pH 0 414 1 0 00 0 01 7 0 0 7 00 0 01 14 414 1 14 00 0 01 3 5 Indication Check Put the instrument ORP mode by following the steps below a b
51. 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 SERV Now push the YES button Selecting and entering Service Code numbers 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 10 Table 4 1 Operations overview J Routine Function Chapter Maintenance AUT CAL Calibration with programmed buffer solutions 6 MAN CAL Calibration with other buffer solutions 6 SAMPLE Grab sample calibration 6 DISP Read auxiliary data or set message display 4 MAN IMP Manual start of impedance check 5 TEMP Select automatic or manual compensation 5 HOLD Switch hold on off when activated 5 Commissioning OUTP Adjust the output range 5 HOLD Activate the hold function 5 Service SERV Fine tune the specialized functions of the transmitter 5 Access to coded entries 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 12B07D02 01E 4 2 Operation Output hold flag Manual temperature Fail flag compensation fla
52. the sensor is connected Turn the functions of Service Codes 3 and 4 off when using such a sensor Yokogawa sensors without liquid earth terminals include the HA405 HA406 DPA405 DPAS405 DPA406 HF405 HA485 DPA485 and DPAS485 IM 12B0702 01 E 11 15 When the OR8EFG OR8ERG sensor is used set both INPUT1 and INPUT2 to the low impedance measurement Confirm the position of the jumper cable of the wiring diagram Setting for ORP dm Bb il G 1112141713 tow me Sich 15 16 INPUT 2 INPUT 1 SUPPLY 2 TEMP LE The temperature compensation of the impedance measurement is for conventional pH glass sensors When other sensors are used switch this feature off 11 6 3 Supplement of temperature sensor When the temperature sensor is not connected with the transmitter when no connections are made to terminals 11 and 12 set the manual temperature compensation refer to Section 5 1 1 Yokogawa s pH sensors Models 405 DPA405 DPAS405 and 405 do not a built in temperature sensor 11 6 4 Auto Return Manual HOLD is automatically turned OFF Calibration mode or Commissioning mode is changed to Measurement mode automatically If no key is operated for 10 minutes in any mode other than measurement mode or after 10 minutes in Hold status Auto Return factory setting On 1 in service code 50 will be activated to return the transmitter to measurement m
53. the signal returns to normal This allows a latching alarm unit to record the error In the case of the EXA the diagnostics are extensive and cover the whole range of possible sensor faults 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 linearise the output with a mA curve IM12B07D02 01E 5 18 Parameter setting Code Display Function Function detail X Default values mA Outputs 30 Not used 31 OUTP F mA output functions pH 0 0 Code 01 set for pH pH table 1 Parameter 2 with suitable sensor s 2 and when enabled in code 02 32 BURN Burn function No burnout 0 0 No Burn Burnout downscale 1 Burnout upscale 2 Pulse burnout 3 33 34 Not used 35 TABLE Output table for mA 0 Linearisation table for 1 5 steps 5 The measured value is set the main 10 display using the gt ENT keys for each of the 5 interval steps vee Where a value is not known that value may 90 be skipped and a linear interpolation will 100 take place 36 39 Not used IM12B07D02 01E 5 3 5 User interface Code 50 Code 51 Code 52 Code 53 Code 54 Code 55 Code 56 55 4 1 CALL M DISP Parameter setting 5 19 When Auto return is enabled the transmitter reverts to the measuring mode f
54. 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 amp 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 12B07D02 01E Operation 4 3 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 commis sioning 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 programming operations Maintenance Press MODE key The display shows 000 and PASS Enter a 3 digit passcode 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 Ser
55. too high Reference sensor fouled Clean or replace sensor Limits set in service code 04 Liquid earth disconnected Check sensor immersion Insufficient electrolyte Check electrolyte reservoir E7 Temperature sensor open Process too hot or too cold Check process gt 140 C or lt 10 C for 8k55 Wrong temperature sensor setting Check sensor amp setting Temperature sensor damaged Check connections E8 Temperature sensor shortened Process too cold or too hot Check process lt 30 C or gt 120 C for 8k55 Wrong temperature sensor used Check sensor amp setting Temperature sensor damaged Check connections E9 out of range 2 to 16 pH Sensors disconnected Check cabling Sensor wrongly connected Check cabling Sensor s defective Replace sensor s E10 EEPROM write failure Fault in electronics Try again if unsuccessful contact Yokogawa E11 Wash recovery check error Measuring sensor aged Replace measuring sensor if communication is set to pH201 B in code Sensor still coated after washing Check cleaning system 60 Defective wash system If needed adjust timings E12 ORP rH outside of preset limits Sensors disconnected or wrongly Check cabling connected E14 No valid calibration data Data lost after switching from Recalibrate pH to ORP E15 Cable resistance to temperature Cable resistance too high Use Pt10000 sensor exceeds limit value Corroded contacts Clean and reterminate Wrong sensor programmed Reprogram E16
56. 0 0 ASP 1D 0 0 mV ASP mV mV 24 BUF ID 4 NIST 4 25 BUF ID 7 NIST 7 26 BUF ID 9 NIST 9 27 ZERO P 0 disabled mA outputs 31 OUTP F 0 pH ORP 32 BURN 0 off 35 TABLE 21 pt table see code 31 IM 12B07D02 01E 10 2 Appendix FUNCTION SETTING DEFAULTS USER SETTINGS User interface 50 RET 1 on 51 MODE 0 off 52 PASS 0 0 0 all off 53 Err 4 1 1 hard fail Err 5 1 1 hard fail Err 4 2 1 hard fail Err 5 2 1 hard fail Err 07 1 hard fail Err 08 1 hard fail Err 09 1 hard fail Err 11 0 soft fail Err 16 0 soft fail 55 CALL M 0 250 days 56 DISP 1 0 01 pH Communication 60 COMM 1 0 on write ena ADDR 00 00 61 HOUR 62 ERASE General Test and setup mode 80 TEST IM 12B07D02 01E 10 2 Configuration checklist for PH202G Appendix 10 3 display calibration log enabled with logbook diagnostics setup Standard Configuration Options Reference for change Measured Variable s primary inputs pH ORP and Temp pH range 0 14 pH any span within 2 16 pH output range linearized disabled 21 point table codes 31 amp 35 ORP range 500 to 500 mV spans up to 3000 mV between output 1500 to 1500mV Temperature range 30 140 C Temperature unit Celsius Fahrenheit code 11 mA Outputs analog output 4 20 m
57. 0 01 ORP Indication Check Put the instrument in ORP mode by following the steps below a Press the key The message display will show SERV b Press the YES key The message display will show CODE and the data display will show 00 with the first digit of 0 flashing Press the ENT key Turn on power again 2079200 press the gt key once The second digit of O flashes press the key once The data display will show 01 with 1 flashing Press the ENT key The message display will show PH ORP Press the key once The data display will change from 0 to 1 In this state change the simulation input of the standard voltage generator as shown in Table 3 The corresponding data must be within the range Table 3 Simulation Input mV Data Display mV 1500 1500 1 0 0 1 1500 1500 1 Return to PH mode by following the steps below then the tests completed a Press the key The message display will show SERV b Press the YES key The message display will show and the data display will show 00 with the first digit of 0 flashing o 7920 Press the ENT key press the gt key once The second digit of O flashes press the key once The data display will show 01 with 1 flashing Press the ENT key The message display will show PH ORP Press the key once The data displ
58. 1 Unclassified Location Classified Location Sensor s are of a passive type to be regarded as simple apparatus devices which neither store nor generate voltages over 1 5 V currents over 0 1 A power over 25 mW or energy over 20 uJ or are FM Approvals entity approved and meet connection requirements Electrical data of the PH202S F amp PH202S P Supply circuit Ui 17 5 V li 380 mA Pi 5 32 W Ci 220 pF Li 0 pH Sensor input circuit Vt 14 4 V 32 3 mA Ca 600 nF La 34 mH Any FM Approved FISCO barrier may be used that meets the following requirements Voc or Vt lt 17 5 V loc or It 380 mA or Pt lt 5 32W 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 Associated apparatus connected to the FISCO barrier must not use or generate more than 250 Vrms or Vdc e Resistance between FISCO Intrinsically Safe Ground and earth ground must be less than 1 0 Ohm e case of using cable glands in Outdoor location they shall be UV rated or made of metal e The FISCO concept allows the interconnection of several 1 5 apparatus not specifically examined in such combination The criterion for such interconnection is that the voltage Vmax the current Imax and the power Pi which I
59. 2B07E01 01E HA405 Solid electrolyte Xerolyt HA406 pH sensor 12 07 02 01 HA406 Solid electrolyte Xerolyt with temperature element DPAS405 pH sensor 12B7G1 01E DPAS405 pH sensor for small culture tanks DPA405 pH sensor 12 07 01 01 DPA405 pH sensor for chemical process with temperature element T2 eps 12B07D02 01E 11 2 11 2 Wiring diagrams 11 2 1 Example of Non Explosionproof System WTB10 PH202G PH201G SDBT Terminal Box pH ORP Transmitter Distributor Distributor Output Signal 1 to 5V DC Output Signal PH8EFP 1 to 5V DC PH8ERP PH8EHP f 2 L 1000 or less Hold FAIL WASH F2 3E eps 11 2 2 Example of Intrinsically Safe Explosionproof System PH202S pH ORP Transmitter pH ORP Sensor Safety Barrier Distributor PH8EFP Output PH8ERP F2 4E eps Ground to earth 1 Use a 2 conductor shielded cable with an outside diameter of 6 to 12 mm Shield must be connected to internal terminal G of transmitter and left unconnected at the other side 2 Transmitter must be grounded using external terminal for general purpose version ground resistance of PH202G should not exceed 100V Japanese Class D grounding N WARNING Use an appropriate DC power supply such as from the 201 distributor for the PH202 transmitter Under no circumstances should you connect AC power such as 100V A
60. 4 Output function 5 User interface gt Model Manufacturer Distributor Tag Descriptor Message Date Dev id Write protect Universal rev Fid dev rev Software rev Hardware rev Poll addr Num req preams SV Meas SV Param Z1 setup 1 Z1 Comp 2 Z1 Meas 3 Z1 Err lim Z2 setup L 1 21 low 3 2 Z1 high 2 Temp specific 1 1 22 low 3 2 Z2 gt Z1 means impedance input1 Z2 means impedance input2 Stab means stability 1 22 Comp 2 22 3 Z2 Err lim gt Cal Check 1 Aspot chk 2 Slope chk PV unit Note Temp sens Temp unit Temp comp Stab chk 1 Stab time Note 2 Stab val Aspot 1 Aspot 2 Zeropnt 3 Aspot L 4 Aspot H Slope 1 Slope 2 Slope L 3 Slope H ITP Buffers gt 1 Buffer 1 1 id 2 Buffer1 values N Buffer 2 1 Buf2 id 2 Buffer2 values Buffer 3 __ ONS MA funct Burn funct mA table 1 Buf3 id 2 Buffer3 values gt m Error prog L 3 eum Err4 1 Err16 Maintenance 4 5 1 Maint timer Display
61. 41 SEE CONTROL DRAWING e 0 Ex ia for 40 Hd WARNING AVERTISSEMENT SEE CONTROL DRAWING Substitution of La substitution de composants CL I DIV 1 GP ABCD components may peut rendre ce materiel Ex ia T4 impair suitability inacceptable pour les IS CLI DIV 1 GP ABCD Ex ia IIC T6 for 40 for class 1 Division 2 emplacements de n AEx SEE CONTROL DRAWING Classe I Division 2 APPROVED Type 4X WARNING 95 AVERTISSEMENT Q Install per CONTROL DRAWING ossi NR 2025 024 10 4 1 to P 4 2 intrinsic safety intrins que Made in Japan Made in Japan Figure 1 1 Nameplate IM 12B07D02 01E 1 2 Introduction O O DISSOLVED OXYGEN TRANSMITTER DISSOLVED OXYGEN TRANSMITTER PH ORP TRANSMITTER MODEL PH202G F MODEL 202 MODEL PH202S K SUFFIX SUFFIX SUFFIX SUPPLY 2406 SUPPLY 9T032VDC SUPPLY 9T032VDC OUTPUT 4 20mA 06 OUTPUT FF TYPE113 OUTPUT PROFIBUS PA AMB TEMP 10
62. 5 V 22 nF Li 35 uH 1 2 W Ci 22 nF Li 35 uH mme iid CENELEC ATEX KEMA Type of protection n IECEx IECEx Intrinsically safe see Note Applicable standard EN60079 0 2006 CENELEC ATEX KEMA Intrinsically safe Approval CENELEC Certificate Applicable standard EEX nA nl Group II Category 3G Certificate KEMA OGATEX0218 X Temp Class T4 Amb Temp 10 to 55 C CENELEC T6 Amb Temp 10 to 40 C ATEX Ex ia Group Il Category 1G E Ui 31 5 V 22 nF 1 25 pH Temp Class T4 Amb Temp 10 to 55 C 2 V 6 Amb 10 to 40 C CSA safe Approval Ui 31 5 V 1 100 mA 1 2 W Ci 22 nF Li 35 type of protection n E A Applicable standard 22 2 0 1991 1 IECEx Intrinsically safe see Note Canadian 22 2 No 04 M2004 C22 2 No 157 M1992 CSA Intrinsically safe Approval Standards C22 2 No 213 M1987 22 2 61010 1 Applicable standard C22 2 No 0 M1991 Association Class 1 Division 2 Groups ABCD C22 2 No 04 M2004 C22 2 No 157 M1992 CSA Ex nA nL Canadian C22 2 No 61010 1 Temp Class 4 Amb Temp 10 to 55 Standards Ex ia Class Division 1 Groups ABCD T6 Amb Temp 10 to 40 C Association EX ia C Ui Vmax 31 5 V Ci 22 nF Li 35 uH CSA Temp Class pre Tee 5 E ji IECEx Type of protection n
63. 5 uH Sensor input circuit terminals 11 through 17 Maximum output voltage Vt 14 4 V Maximum output current It 32 3 mA Maximum allowed external capacitance Ca 600 nF Maximum allowed external inductance La 34 mH If Hand Held Terminal HHT is not connected to the power supply lines of the PH202S see figure 1 Any FM Approved barrier or power supply may be used that meets the following requirements Vt 31 5V IscorIt lt 100 mA gt 22nF Ccable La gt 5 Leable If HHT is connected to the power supply lines of the PH202S see 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 Vt VHHT lt 31 5 Isc or It IHHT lt 100 mA 222nF Ccable CHHT La gt 5 Lcable LHHT 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 Resistance between Intrinsically Safe Ground and earth ground must be less than 1 0 Ohm In case of using cable glands in Outdoor location they shall be UV rated or made of metal WARNING Substitution of compone
64. 60 enabling the PH202 to communicate with the PH201G Style B In addition set the wash function on enabling wash function WASH ON on parameter setting In this time on the LCD shows because Wash isn t made MODE of the text plate IM 12B0702 01E 11 4 4 Setting of errors FAIL contact Code 53 Err 4 1 Err 16 9 items Code Display User interface Appendix 11 9 These set how errors are notified to the user Either of two modes can be set Hard Fail mode lights the FAIL indicator on the LCD panel When enable status output contact is set for the PH201G distributor Style B the FAIL contact remains closed and the wash contact stops operating If Burnout functions are enabled by Code 32 then the output becomes Burnout Upscale or Burnout Downscale Soft Fail mode blinks the FAIL indicator on the LCD panel When enable status output contact is set for the PH201G distributor Style B the FAIL contact pulses and the wash contact and maintenance contact continue to operate normally In Soft Fail mode notification that periodic maintenance is due still functions service code 55 so for this reason it is better to set Soft Fail mode than Hard Fail mode Function Function detail Ddefault values 53 Err 4 1 Err 07 Err 08 Err 09 Error setting Impedance low input 1 Impedance low input 1 Impedance higt input 1 Impedance high input 1 Imp
65. 9315CN 1 Epoxy polyester Coating 2 Internal Works Assembly with amplifier assembly 1 For mA HART 1 1 For Profibus 1 mA HART Non incendive 3 Housing Assembly 1 Polyurethane Coating mE 1 Epoxy polyester Coating 4 L9811FV 2 Cable Gland Assembly 5 1 Flat Cable 6 1 Pin Terminal Unit 3 terminals type 8 2 Stud 9 Analog Board Assembly 1 1 FF Profibus 1 mA HART Non incendive 10 1 Digital Display Board 1 1 For FF Profibus 11 1 Screw Assembly to fix amplifier 12 K9660YP 1 Stainless steel screw asssembly to fix cover 13 Adapter Assembly K9414DH 1 For G1 2 screw when AFTG specified 2 units K9414DJ 1 1 2 screw when ANSI specified 2 units 14 Comm Board Assembly 1 For FF 1 For Profibus Copyright 2008 1st Edition Feb 2008 CM PL 1 2B07D02 23E YOKOGAWA lt gt Subject to change without notice 2nd Edition Nov 2008 YK Yokogawa Electric Corporation Pipe Wall Mounting Hardware Option Code U 1 ae Panel Mounting Hardware Option Code SCT Hood to sun protection Option Code Item Parts No Qty Description 1 K9171SS 1 Universal Mount Set U 2 K9311BT 1 Tag Plate SCT 3 K9311KA 1 Fitting Assembly PM 4 K9311KG 1 Hood Assembly H K9660JA 1 Hood Assembly H2 CMPL 12B07
66. A Use gt A keys to adjust and enter manual temperature setting YES XH Dil II TINI Hi Li X YES NO LIIN V YES XWASH F5 2 3E eps The contact output for wash can be controlled by sending wash siganals This function is available with the PH201G style B Control the contact output in combination of the PH202 and the PH201G style B Set communication setting of the PH201G at the Service Code 60 of PH202 You can individually set the wash period interval between wash cycles tl the wash time length of the wash phase tw and the recovery time tR IM 12B0702 01E pH Appendix 11 7 You can individually set the wash period interval between wash cycles tl the wash time length of the wash phase tw and the recovery time tR During the recovery phase of the wash cycle the detector checks if the sensor response is sluggish the detector checks if the time to recover half the wash cycle pH change 1 2ApH is within one third of the recovery time 1 3tR setting to determine if the sensor requires manual cleaning or is near the end of its useful life Determine the recovery time setting accordingly To disable this check you need to set service code 60 accordingly The wash cycle p
67. A for pH pH ORP parameter 2 code 01 02 31 output linearization disabled pH ORP codes 35 Communication digital interface disabled HART 60 communication software external HHC or PC202 contact factory variables on display pH ORP and temp pH ORP parameter 2 mA output display SL 21 22 etc burn out disabled burn low 3 6 or 3 9 high 21 on mA output code 32 password protection disabled for maint comm serv level code 52 autoreturn return to measure 10 min enable or disable code 50 add functions in MAINT disabled Impedance check start code 51 Diagnostics impedance checking active enable or disable code 03 amp 04 check on calibration data active enable or disable code 05 check on stability 0 02 pH per 5s choose stability level code 20 codes 03 04 amp 05 other sensors 2nd parameter manual temp comp enamel sensors Pfaudler disabled disabled ITP amp impedance check setup pH amp ORP pH amp rH disable or enable Compatibility pH or ORP glass sensor metal electrode pH or ORP code 01 temperature sensor Pt 10000 Pt1000 Pt100 etc code 10 codes 23 03 amp 04 code 02 temp Special Features buffer table configuration temperature calibration zero point calibration call for maintenance HOLD during maintenance process temp compensation logbook NIST standard none disabled disabled disabled fully configurable adjustment 20 disable or enable
68. C or similar AC power supply line To measure pH or ORP in hazardous locations use the 2025 or PH202SJ with intrinsic safety barriers Grounding Be sure to ground the transmitter by using the ground terminal on its case Connect the G terminal inside the transmitter to the shield wire of two core shield cable which is conneced between the distributor and transmitter For the PH202G transmitter this does not apply to the 2025 if you cannot ground the terminal on the transmitter case then connect this G terminal to the shield of the two wire cable connecting the transmitter and distributor and ground it at the distributor end 11 3 Sensor wiring Refer to Figure 11 1 and 11 2 which includes drawings that outline sensor wiring The 202 can be used with a wide range of commercially available sensor types both from Yokogawa and other manufacturers The sensor systems from Yokogawa fall into two categories the ones that use a fixed cable and the ones with separate cables To connect sensors with fixed cables simply match the terminal numbers in the instrument with the identification numbers in the instrument on the cable ends The recommended procedure is to color code each end of the cables to match the sensors with the color strips provided with each cable This provides a quick way to identify the ends of the cables belonging to a particular sensor when they are installed The procedure for fixing the identification labels is des
69. CATION INPUT VOLTAGE FTT Sii RE mV REFERENCE ACTUAL ERROR ORP INDICATION INPUT VOLTAGE SERI RE mV er o o NOTES Att DATE AMBIENT TEMP amp HUM amp BAA KBE INSPECTOR APPROVED BY YOKOGAWA 9 QIC 12B07D02 01 Ed6 Mar 2007 IM 12B07D02 01E 12 5 12 2 202 2 Wire pH ORP Transmitter 202 Inspection 2 Wire pH ORP Standards ire pH O ransmitter 1 Scope This inspection standard applies to the PH202S 2 Wire pH ORP Transmitter 2 Inspection Items 2 1 Insulation resistance test 2 2 Dielectric strength test 2 3 Current output test 2 4 Temperature indication check 2 5 pH indication check 2 6 ORP indication check Note Items marked with an asterisk may only be confirmed by a test certificate 3 Inspection Methods Standards and Conditions e Connect the testing circuit as shown in Figure 1 Allow the instrument to warm up for at least 5 minutes before conducting the tests For the connections for the insulation resistance test follow the instructions in Section 3 1 and for the connections for the dielectric strength test follow the instructions in Section 3 2 e Performance tests should be done in the inspection mode where the tests from Section 3 3 through Section 3 6 take place in sequence and cannot be retraced If the reconfirmation of a test is needed turn off the power to the transm
70. Code Display Function Function detail Default values Temperature measuring and compensation functions 10 T SENS Temperature sensor Pt1000 0 Pt1000 Pt100 3kBalco 5k1 8k55 350 6k8 PTC10k 11 T UNIT Display in C or F C 0 F gt OJIN OO A OO N o 12 T ADJ Calibrate temperature Adjust to allow for cable resistance None 13 T COMP Set temp comp Compensation for process changes off 0 0 Off Compensation for process changes on 1 T COEF Adjust process TC Set for TC in pH per 10 C 0 00 pH per 10 C 14 19 Not used IM12B07D02 01E Parameter setting 5 15 5 3 3 Calibration functions Code 20 Code 21 Code 22 ALSEC amp APH These functions are used to determine the stability level demanded by the EXA as acceptance criteria for the automatic calibration for general purpose electrode systems with a fast response Where heavy duty electrodes are used or when low temperatures are concerned these values should be adjusted When adjusting these settings the longer the time interval and the smaller the pH change the more stable will be the reading However it is important to bear in mind that the time taken to reach stability is an exponential function and too ambitious a setting will cause the instrument to wait for a very long time before accepting a calibration AS LOW amp Limit values for the drift of an electrode system before an error i
71. D02 01E 3 4 Installation and wiring Hand Held Communicator Sensors Input 2 5or10m CURRENT OUTPUT Recorder Safety Barrier PH2028 only ref pH ORP emp Figure 3 6 System configuration 3 3 Wiring of sensors 3 3 1 General precautions Generally transmission of signals from pH sensors is at a very low voltage and high impedance level Thus a lot of care must be taken to avoid interference Before connecting sensor cables to the transmit ter make sure that next conditions are met the sensor cables are not mounted in tracks together with high voltage and or power switching cables only standard coaxial electrode cables or extension cable are used the transmitter is mounted within the distance of the sensor cables max 10 m 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 Make sure that the total of capacitance and inductances connected to the input terminals of the EXA 202 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 PH202S instrument be mounted in Zone 0 or 1 PH202S B N D The sensors can be installed in Zone 0 or Zone 1 if a safety barrier according to the limits given in the system certificate is used Ensure that the t
72. D02 23E 2nd Edition Nov 2008 YK Revision Record Manual Title Manual Number Edition 1st 2nd 3rd 4th 5th eth 7th 8th 9th 10th Model PH202G Style 3 202 Style 3 2 wire Type pH ORP Redox Transmitter Date Apr 2000 May 2002 Feb 2004 May 2004 Dec 2004 Dec 2005 Nov 2006 Mar 2007 Oct 2007 Apr 2008 IM 12B07D02 01E Remark s Newly published CENELEC Certification changed to ATEX KEMA CSA Certification added Apart from a general rewite of English Style changed to S2 HART Communication function is additionally described TIIS intrinsic safe version PH202S Style 1 added etc Write in some error correction Model name of TIIS intrinsic safe version PH202S style 1 changed to PH202SJ style 1 All over revised style of PH202G changed to S3 and PH202S changed to S2 PREFACE 1 Some of warning description modified P 1 1 Some of nameplate in Figure 1 1 changed P 1 2 Some of nameplate in Figure 1 2 changed P 2 2 EN 61000 3 3 deleted from N Regulatory compliance P 2 3 Certificate no of CENELEC ATEX and IECEx Scheme explosionproof added CSA explosionproof description added P 2 4 CSA explosionproof description added P 2 5 P layout changed P 2 6 Miss spering of Model and suffix code corrected P 2 9 Control Drawing for mA HART Specification FM Intrinsically safe design corrected P 2 10 Control Drawing for mA HAR
73. E The special gland is intended to be used to seal the multiple cables from the Yokogawa flow fittings such as FF20 and FP20 The designated cables are WU20 sensor cables which are approximately 5 mm 0 2 in diameter and 82895002 liquid earth cables which are approximately 2 5 mm 0 1 in diameter For sensor systems using a single cable like the FU20 FU25 and the PR20 PD20 PF20 and PS20 the standard gland will accommodate the cable adequately Single cables between approximately 6 mm and 12 mm 0 28 and 0 47 can be sealed properly with these glands IM 12B07D02 01E Installation and wiring 3 11 3 6 3 Sensor cable connections using junction box BA10 and extension cable WF10 For the WTB10 terminal box see APPENDIX Where a convenient installation is not possible using the standard cables between sensors and transmit ter a junction box and extension cable may be used The Yokogawa junction box and the WF10 extension cable should be used These items are manufactured to a very high standard and are neces sary to ensure that the specifications of the system are not compromised The total cable length should not exceed 50 metres e g 5 m fixed cable and 45 m extension cable In the case of systems using dual high impedance sensors e g Pfaudler 18 then the cable length is restricted to 20 metres fixed cable only no extension with WF 10 4 Screen White Co axial cable
74. ES NEW SNS Display flashes YES NO answer YES if new sensor fitted or NO if not Care YES resets logbook calibration data Insert the sensors in pH 7 buffer solution Press YES to start calibration Note To start calibration with another solution press NO to cycle through the other options CAL7 CAL4 CAL9 NO CAL gt The instruments waits for the reading to stabilise The pH display flashes When reading Is stable the CAL END message appears Press YES for single point As Pot adjustment The sinal Press NO to proceed to calibrate Slope singie point YES NO calibration is now complete put sensors back in the process and press NO to switch off HOLD and return to measuring mode YES NO Transfer to pH 4 buffer and press YES The instrument then waits for the reading to stabilise The pH display flashes When the reading is stable the CAL END message appears Press YES WAIT flashes briefly then HOLD The calibration is now complete Put the sensors back in the process and press NO to turn off HOLD and return to the measuring mode IM 12B07D02 01E 6 4 Calibration 6 5 3 Manual calibration 2nd parameter calibration 12B6C3 32 Press the MODE key The leg
75. H change is ApH the difference between the pre wash pH and the pH during the wash If the difference between the normal pH value in process and the pH during the wash is small then half the difference 1 2ApH will be too small to measure reliably so this check should be disabled in this case The monitoring of waste water pH is an example of such an application If you select water jet cleaning in such a case the normal pH as well as the washingtime pH will be around pH7 the difference will be approximately zero too small for the recovery time check to measure so the recovery time check will not work normally and should be disabled 1 Wash Period Good Electrode 1 2ApH VIR W Wash Time tR Recovery Time Time tl Wash Period 0 1 to 36 0 hours default 6 0 hours tW Wash Time 0 1 9 9 minutes default 0 5 minutes Recovery Time 0 1 9 9 minutes default 0 5 minutes F5 0 eps IM 12B07D02 01E 11 8 Appendix 11 4 3 How to output manual wash signal gt A ENT CoD CD C MODE 1 J YES T5 1 5E eps Note Wash functuon is only avairable when using the PH201G style B distributor In using the function it is necessary to set 2 0 or 2 1 at service code
76. ITTER PH ORP TRANSMITTER MODEL PH202 MODEL PH202S E SUFFIX SUFFIX SUPPLY OUTPUT 4 20mADC 10 55 C STYLE SUPPLY 24VDC No OUTPUT 4 20mADC No IECEx KEM 06 0052X AMB TEMP 10 55 Zone 0 Ex la IIG T6 for Ta 0 c STYLE SEE CONTROL DRAWING No 06 0218 X No DLE D SEE CONTROL DRAWING IP65 YOKOGAWA YOKOGAWA Made in Japan Tokyo 180 8750 JAPAN Made in Japan Tokyo 180 8750 JAPAN nz200 PH ORP TRANSMITTER PH ORP TRANSMITTER O No IECEx KEM 06 0052X MODEL PH202S U peto 2025 Ex nA nL T4 Ex nA nL IIC T6 for 40 SUFFIX 65 SEE CONTROL DRAWING No 06 0219 EEx nA nL IIC 4 36 EExnA nL IIC T6 for 40 IP65 SEE CONTROL DRAWING NI CL I DIV 2 GP ABCD AND SUPPLY SUPPLY 2406 CLI ZN 2 GP IIC T4 OUTPUT 4 20mADC OUTPUT 4 20mADC Type 4X E 0 APPROVED Install per CONTROL DRAWING AMB TEMP 10 55 C AMB TEMP 10 55 C 024 10 P 4 3 to P 4 4 STYLE STYLE Ex nA nL No NI CL I DIV 2 GP ABCD N z T4 No IECEx KEM 06 0052X 5 Be T6 for Ta 40 c No IECEx KEM 06 0052X Zone 0 Ex ia T4 IP65 Type 3S Zone 0 Ex ia T4 Zone 0 Ex ia T6 for Ta 40 C LR817
77. Li 0 uH oy FM Non incendive safe Approval CENELEC ATEX Intrinsically safe Approval 2 10 e 0 Applicable standard 60079 0 50020 G ABCD 2 2 EN60079 26 60079 27 POURS p Aone Certificate 07 0048 FISCO Ex ia Group Category 1G on incendive Safe Apparatus Parameters Temp Class T4 Amb Temp 10 to 55 C Entity Vmax 32 V Pmax 1 2 W Ui 17 5 V li 380 mA Pi 5 32 W Ci 220 pF Li 0 uH uH CENELEC Type of protection Ciz220 pF O Applicable standard 60079 0 2006 B 60079 15 2003 FM EPS CENELEC Certificate 07ATEX0049 m ATEX EEx nA nL Group Il Category 3G Item Description Code Temp Class n Amp gs pea CSA Intrinsically safe Approval Ui 32 V 220 pF Li 0 pH D Applicable standard C22 2 No 0 1991 22 2 04 2004 22 2 157 1992 P ATEX EPS 22 2 No 61010 1 Item Description Code E m l Division 1 Groups ABCD r LE 2 Temp Class 4 Amb Temp 10 to 55 C pplicable standard 0 11 IECEx 60079 26 Canadian Entity TEES ME EUN d Scheme Certificate IECEx 07 0026X Standards Ui Vmax 17 5 V l max 380 mA Entity Zone 0 Ex ia P Association FISCO Pi Pmax 5 32 W 220 pF Li 0 uH Temp Class T4 Amb Temp 10 to 55 CSA Ui 24 V li 250 mA
78. MINAL G STRENGTH 600V AC 2 SEC 2025022 OI EP A Sint G 600V 2 fl ONLY FOR BETWEEN INPUT TERMINALS 11 TO 17 AND EARTH TERMINAL G RERE INSPECTION ITEM 5 R RESULT 2025 600V 2 SEC 11 17 4 600V AC 2T R BETWEEN INPUT TERMINALS 11 TO 17 AND POWER SUPPLY TERMINALS 600V AC 2 SEC E IR BER 0 3 ACCURACY TEMPERATURE INDICATION C eee M T 14983 1 90 A 001 ACCURACY NIIT pH INDICATION ANBE INDICATION pH INPUT VOLTAGE EX T ACTUAL I 4141 LI LLLI ORP INDICATION 6 7 INDICATION mV INPUT VOLTAGE BAG MME Re REFERENCE ACTUAL ERROR 1500 D2 47 PROFIBUS PROFIBUS FUNCTION CHECK FUNCTION NOTES Aft SE DATE AMBIENT TEMP amp HUM LI INSPECTOR APPROVED BY QIC 12B07D02 71 YOKOGAWA 4 Ed1Sep 2007 HVI IADU JUZU IL Customer Model PH202G Style 3 L pH ORP Transmitter Parts List ltem Part No Qty Description 1 Cover Assembly K9315CA 1 Polyurethane Coating K9315CN 1 Epoxy polyester Coating 2 Internal Works Assembly with amplifier assembly K9661AD 1 For mA HART K9661AE 1 For FF K9661AF 1 For Profibus 3 Housing Assembly K9661HA 1 Polyurethane Coating K9661HB 1 Epoxy polyester Coating 4 L9811FV 2 Cable Gland Assembly 5 K9660AQ 1 Flat Cabl
79. NALS AND EARTH TERMINAL G EN STRENGTH 600V AC 2 SEC 2025004 11 17 F G fil 600V AC 2 Fi ONLY FOR BETWEEN INPUT TERMINALS 11 TO 17 AND EARTH TERMINAL G 2025 600 2 5 AJ 11717 amp nF 600 AC 2 fil BETWEEN INPUT TERMINALS 11 17 AND POWER SUPPLY TERMINALS 600V AC 2 SEC im E AIR 03 C ACCURACY 0 3 C TEMPERATURE amp x INDICATION INDICATION RESISTANCE REFERENCE ZEB ACTUAL ERROR Q 0 9216 1097 1498 3 no pH ACCURACY 0 01pH pH INDICATION ABE amp INDICATION pH INPUT VOLTAGE Re AE L 90 14 4 7111 1 42 1mV ACCURACY 1mV ORP INDICATION X INDICATION mV INPUT VOLTAGE EETA ESMA 400 e 1500 74 24 FIELDBUS FIELDBUS FUNCTION CHECK FUNCTION NOTES Att FARE RE DATE AMBIENT TEMP amp HUM REF RBA INSPECTOR APPROVED BY QIC 12B07D02 61 YOKOGAWA 1 2007 IM 12B07D02 01E 12 13 12 4 202 PH202S 2 Wire pH ORP Transmitter Profibus Communication Quality PH202G PH202S Inspection 2 Wire pH ORP Transmitter Standards Profibus Communication 1 Scope This inspection standard applies to the PH202G and 202 2 Wire pH ORP Transmitters Profibus specification 2 Inspection It
80. Profibus Communication Functional Check Check for normal function using Profibus equipment specified by Yokogawa In the tests of Item 3 3 to 3 5 check the communication function using Profibus communication PH202 SUPPLY INPUT2 INPUT1 1 G 11 12 14 17 13 LOW IMP HIGH IMP 15 16 O O O O 9 9 Shorting Bar o Ground O d Decade Standard Resistance Voltage Source ANN e Dc DA PA Coupler Source R 24VDC AAA e R 502 1 Q C 2uF 40 4 uF _ Profibus Equipment Specified by YOKOGAWA Figure1 Testing Circuit and Test Equipment QIS 12B07D02 71E IM 12B07D02 01E 12 16 K TEST CERTIFICATE RAR 5 BINo PRODUCT NAME pH ORP TRANSMITTER TAG NO 2 MODEL PH202 F HEES ORDER NO SERIAL NO APPEARANCE ie d SURE 507 5 GO 100M Q 500V DC INSULATION BETWEEN POWER SUPPLY TERMINALS AND EARTH TERMINAL G RESISTANCE 100M MORE 500V DC Arg T 01017 38607 A Sint 100M9 OR MORE 500V DC BETWEEN INPUT TERMINALS 11 TO 17 AND EARTH TERMINAL G 10049 OR MORE 500V DC amp amp 7 600V 2 0 RA DIELECTRIC BETWEEN POWER SUPPLY TERMINALS AND EARTH TER
81. S apparatus can receive and remain intrinsically safe considering faults must be equal to or greater that the voltage Voc Vt the current loc It and the power Poc Pt which can be providede by the FM approved FISCO barrier In addition the maximum unprotected residual capacitance Ci and inductance Li of each apparatus other than the terminator connected to the Fieldbus must be less than or equal to 5 nF and 10 uH respectively IM 12B07D02 01E Specification 2 17 In each 1 5 Fieldbus segment only one active source normally the FM Approved FISCO barrier is allowed to provide the necessary power for the Fieldbus system other equipment connected to the bus cable has to be passive not providing energy to the system except to a leakage current of 50 for each connected device Seperately powered equipment needs a galvanic isolation to insure that the 1 5 Fieldbus circuit remains passive e The cable used to interconnect the devices needs to comply with the following parameters Loop resistance R 15 150 O km Inductance per unit length L 0 4 1 mH km Capacitance per unit length C 80 200 nF km C line line 0 5 line screen if both line are floating C line line C line screen if the screen is connected to one line Length of spur cable max 30m Length of trunk cable max 1 km Length of splice max 1 WARNING Substitution of components may impair Intrinsic Safet
82. Service Code 53 to 0 for soft fail to disable Fail contact output When you set Service Code 53 to 1 for hard set Service Code 60 to 2 0 to enable Fail contact output of 201 Style B or set Service Code 60 to 0 1 to disable Fail contact output of PH201G Style ADDR Select address 00 for point communication with 4 20 mA transmission Addresses 01 to 15 are used in multi drop configuration fixed 4 mA output Display Function Function detail Ddefault values Communication 60 COMM Communication Set communication Off Set communication On write enable write protect Set communication PH201G B Without half time check by setting 2 0 With half time check by setting 2 1 Network address Set address 00 to 15 Valid for instrument using software version 3 1 or later T5 3 6 eps For earlier versions the default is 0 1 IM 12B07D02 01E 11 6 Appendix 11 4 2 The setting of sending WASH signal WASH WASH Commissioning mode has the setting ability of sending signal for WASH output contact to the PH201G distributor style B Converning to On Off WASH selection when selecting On wash period wash time and retention time waiting time after wash should be set To apply wash function use the PH201G styleB and 2 0 or 2 1 at the service code 60 must be set C5 C2 C5 EXA YOKOGAW
83. T Specification FM Non incendive design corrected P 2 11 Control Drawing for mA HART Specification CSA corrected P 2 12 Control Drawing for FF PB Specification IECEx corrected P 2 13 Control Drawing for FF PB Specification ATEX corrected P 2 14 Control Drawing for FF PB Specification FM corrected P 2 16 Control Drawing for FF PB Specification FM Intrinsically safe FISCO corrected P 2 18 Control Drawing for FF PB Specification FM Non incendive Entity corrected P 2 19 Control Drawing for FF PB Specification FM Non incendive FNICO corrected P 2 20 Control Drawing for FF PB Specification CSA corrected P 11 1 11 5 11 6 11 11 11 13 Some error corrected Sec 12 APPENDIX 3 QUALITY INSPECTION added CMPL 12B07D02 03E 22 revised to 2nd edition because some part no changed Style of PH202S changed to 53 and related description changed as follows P 2 6 Style of PH202S changed to 53 for FM approval P 3 1 Some of dimensions in Figure 3 1 corrected P 10 7 Appendix Note of HART protrocol DD files URL added CMPL 12B07D02 23E 1st edition added for 2025 style S3 IM12B07D02 01E Edition Date 11th Oct 2009 IM12B07D02 01E Remark s PREFACE Zone 0 added to Warning label explanation P 1 2 Name plate of PH202S K NEPSI added to Figure 1 2 P 2 2 Some revision of N Regulatory compliance description for EMC revised P 2 3 to 2 4 Some revision of IECEx Intrinsically safe description Zone
84. TROL DRAWING NI CL I DIV 2 GP ABCD AND CL I ZN 2 GP T4 SUPPLY 97032 0 SUPPLY 9T032VDC OUTPUT FF TYPE 113 OUTPUT PROFIBUS PA UMP AMB TEMP 10 55 C 10 55 C Ex nA nL STYLE STYLE NI CL I DIV 2 GP ABCD No No T6 for 40 1 65 35 SEE CONTROL DRAWING AVERTISSEMENT YOKOGAWA of La subttuion de composants Made in Japan Tokyo 180 8750 JAPAN Made in Japan Tokyo 180 8750 JAPAN noair ponr les O nz00 200 ee Classe Division 2 Figure 1 2 Nameplate IM 12B07D02 01E PH202S B D Introduction 1 3 NOTE 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 description of the model codes refer to Chapter 2 of this manual under General Specifications Basic Parts List Transmitter PH202 User s Manual English Optional mounting hardware when specified See model code NOTE mounting screws and special grommet are packed in the terminal compartment together with a second link for impedance selection 1 2 Application The EXA converter 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 diag nostics and enhanced communicatio
85. a ble measuring loop 3 3 5 Access to terminal and cable entry 1 To access terminals remove the front cover of the EXA PH202S by releasing the 4 captive screws 2 Thread the sensor cables into the connection space and connect the cables to the terminals as indicated in the wiring diagram Make sure all connections are firm and do not touch each other 3 Screw the gland securely and tighten it to keep out moisture DO NOT use a wrench to tighten the nut 4 The optional hose connection is used to guide the cables coming from an immersion fitting through a protective plastic tubing to the transmitter 3 4 Wiring of power supply 3 4 1 General precautions WARNING Do not activate the power supply yet First make sure that the DC power supply is according to the spec ifications given 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 sig nal from the transmitter Use a two conductor shielded cable with a size of at least 1 25 mm and an outside diameter of 6 to 12 mm The cable gland supplied with the instrument accepts these diameters The maximum length of the cable is 2000 metre or 1500 metres when using the communications This ensures the minimum operating voltage for the instrument Grounding If the transmitter is mounted on a grounded surface e g a metal frame fixed in the soil the shield of the 2 wire cable
86. acitance 22 nF Effective internal inductance Li 35 uH Sensor input circuit terminals 11 through 17 Maximum output voltage 14 4 V Maximum output current It 32 3 mA Maximum allowed external capacitance Ca 2 294 Maximum allowed external inductance La 64 96mH 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 Non incendive field wiring may be installed in accordance with Article 501 of the National Electrical Code Grounding shall be in accordance with Article 250 of the National Electrical code Incase of using cable glands in Outdoor location they shall be UV rated or made of metal WARNING Substitution of components may impair suitability for Division 2 Do not remove or replace while circuit is live unless area 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 Application Doc No IKE024 A10 P 4 3 to P 4 4 IM 12B07D02 01E 2 8 Control Drawing of PH202S mA HART Specification CSA Specification 2 11 Intrinsically safe design CSA certified CSA Ex ia Class I Div 1 Group ABCD T4 for ambien
87. agrams 11 2 11 2 1 Example of Non Explosionproof System 11 2 11 2 2 Example of Intrinsically Safe Explosionproof System 11 2 11 3 Sensor WIFIFIE 11 2 11 3 1 Connection CADIG ics recte Er eo 11 3 11 3 2 Sensor cable connection using terminal 11 5 11 4 PH201G B Dedicated 11 5 11 4 1 Communication 11 5 11 4 2 The setting of sending WASH signal 11 6 11 4 3 How to output manual wash 11 8 11 4 4 Setting of errors FAIL 11 9 11 5 Calibration in 11 10 11 5 1 Electrode Check 11 10 11 5 2 Manual 11 11 11 5 3 11 11 1125 4 Data rti nitent EE nae dA 11 11 11 5 5 Calibration ProCedUre eret rers 11 12 11 6 Supplement of troubleshooting 11 13 11 6 1 Error Codes ioi E irre E a EE 11 13 11 6 2 On line impedance 1
88. ameter pH ORP pH 02 PRM 2 Enable 2nd parameter Off ORP rH Off 03 Z1 CHK 7 7 Impedance check 1 Low impedance limit x None K M or G High impedance limit x None K M or G Low High Temp comp off Temp comp on Imp check off Imp check on Press NO to step through choice of units press YES to select units then use the gt ENT keys to set the value Press NO to step through choice of units press YES to select units then use the gt ENT keys to set the value gt OJN gt o High 04 Z2 CHK ZZ 7 Impedance check 2 Low impedance limit x None K M or G High impedance limit x None K M or G Low High Temp comp off Temp comp on Imp check off Imp check on Press NO to step through choice of units press YES to select units then use the gt ENT keys to set the value Press NO to step through choice of units press YES to select units then use the gt ENT keys to set the value 0 0 1 Low Off 1000 200 05 CAL CK Calibration check Asymmetry check off Asymmetry check on Slope check off Slope check on 1 1 06 09 Not used IM12B07D02 01E Parameter setting 5 13 5 3 2 Temperature compensation and measuring functions Code 10 Code 11 Code 12 Code 13 5 T UNIT T ADJ
89. annin saksan ja ranskankielisina Mikali tarvitsette Ex tyyppisten tuotteiden ohjeita omalla paikallisella kielell nnne ottakaa yhteytta lahimpaan Yokogawa toimistoon tai edustajaan gt Todos os manuais de instru es referentes aos produtos Ex da ATEX est o dispon veis em Ingl s Alem o e Franc s Se necessitar de instru es na sua l ngua relacionadas com produtos Ex dever entrar em contacto com a delega o mais pr xima ou com um representante da Yokogawa Tous les manuels d instruction des produits ATEX Ex sont disponibles en langue anglaise allemande et frangaise Si vous n cessitez des instructions relatives aux produits Ex dans votre langue veuillez bien contacter votre repr sentant Yokogawa le plus proche Alle Betriebsanleitungen f r ATEX Ex bezogene Produkte stehen in den Sprachen Englisch Deutsch und Franz sisch zur Verf gung Sollten Sie die Betriebsanleitungen f r Ex Produkte in Ihrer Landessprache ben tigen setzen Sie sich bitte mit Ihrem rtlichen Yokogawa Vertreter in Verbindung Alla instruktionsb cker f r ATEX Ex explosions s kra produkter r tillg ngliga engelska tyska och franska Om Ni beh ver instruktioner f r dessa explosionss kra produkter p annat spr k skall Ni kontakta n rmaste Yokogawakontor eller representant Ta eyyerpi ra Aevrovpyytas pe ATEX Ex ota Ayyhik leppavik kar
90. apter 5 of this manual Most Yokogawa sensor systems use an Iso thermal point ITP of pH7 and zero point at pH7 This is the default condition for which the transmitter is set It is only necessary to consider this adjustment when installing a system with a different ITP Antimony systems and Pfaudler probes are good examples of systems with different ITP values Service code 23 is used This also permits the setting of calibration data for precalibrated sensors Temperature sensor The Pt 10000 RTD sensor is now becoming the most commonly used for temperature compensation The transmitter accepts inputs from several different temperature sensors to suit most sensor Systems Service code 10 19 are used to set the temperature parameters and the process temperature coefficient Temperature calibration For best accuracy the temperature sensor should be calibrated to compensate for connection cable errors See Service code 12 e pH Calibration Traditionally users select buffer solutions to suit the chosen output range This is merely a continuation of the days of analog instruments that used indicators driven by the mA output With digital technology it is better to choose good buffer solutions and make an effective calibration than to use commercial adjusted buffers which may have round number values but are less effective buffers with lower buffer capacity It is for this reason that Yokogawa recommends that the NIST 4 7 and 9 s
91. ata display will show 87 with the second digit of 7 flashing g Press the ENT key The message display will show PASS 2 Setting Password 070 a Press the gt key once The data display will show 000 with the second digit of 0 flashing b Press the key seven times The data display will show 070 with the second digit of 7 flashing c Press the ENT key The message display will show HIF d Press the YES key 3 Checking the date and time a Press the ENT key The data display will show the date in day month year order b Press the ENT key The data display will show the time in hour minute second order c Press the ENT key The message display will show mA This is the inspection mode When the message display shows mA check the current outputs Each time the ENT key is pressed the value on the data display increases in steps of 4 0 like 4 0 8 0 and 12 0 Check the current outputs Corresponding to the data display the current output must be within the range shown in Table 1 When the data display shows 12 0 pressing the ENT key causes the message display to show RIPPLE and the data display to remain unchanged Press the ENT key again The message display will show mA and the data display 16 0 Table 1 Data Display Current Output mA 4 0 4 0 02 12 0 12 0 02 20 0 20 0 02 3 3 Temperature I
92. atibility The PH202G is not intrinsically safe explosionproof so never install it in a hazardous area Conductivity Use of Distoributor PH201G transmitter No use of contact output Use of contact output 2026 Style amp Style possible Only Style possible Non Explosionproof type 1 For information about instruments related to the 202 refer to the following Instruction Manuals Manual Name IM No O Instruments mentioned pH sensor amp holders IM 12B7K1 02E PH8ERP KCI Refillable pH sensor for general purpose IM 12B7J1 01E PH8EFP Filling type pH sensor IM 12B7M2 01E PH8HG Guide pipe IM 12B07M01 01E PH8HS PH8HSF Submersion type holder IM 12B07N01 01E PH8HF PH8HFF Flow through type holder IM 12B07WO03 01E PH8AX Accessories ORP sensor IM 12C07J01 01E OR8EFG KCI filling type sensor for general purpose IM 12C04K01 01E OR8ERG KCI Refillable ORP sensor IM 12C04W02 01E OR8AX Accessories for pure water IM 12B07P01 01E PH8HH holder for pH sensor for pure water for fermentation use Terminal box IM 19D01B01 01E WTB10 PH1 WTB10 PH2 Terminal Box Ultrasonic oscillator IM 19C1B3 01E PUS400G Ultrasonic Oscillator IM 12 502 PH8USF Explosionproof type PH201G distributor Style B IM 19B01E04 02E PH201G style B Distributor SDBT SDBS distributor IM 1B4T1 01E SDBT SDBS Distributor Attachment rack instrument IM 1B4F2 01E Instruments for rack attachment HA405 pH sensor IM 1
93. ay will change from 1 to 0 QIS 12B07D02 61E IM 12B07D02 01E 12 11 3 6 Fieldbus Communication Functional Check Check for normal function using Fieldbus equipment specified by Yokogawa 3 3 PH202 SUPPLY LE NPUT2 INPUT G 11 14 17 13 LOW IMP HIGH IMP 15 16 9 C pD Shorting Bar U o Ground C O O 2 Standard Decade Voltage Source Resistance Box R C 509 1 Q C 2uFXx0A4uF R R L 5mH 5 RL 50Q 1 gd Ground RL r5 DC Source 24VDC Fieldbus Equipment Specified by YOKOGAWA Figure 1 Testing Circuit and Test Equipment QIS 12B07D02 61E IM 12B07D02 01E 12 12 TEST CERTIFICATE meh pH ORP1zi 28 47 No PRODUCT NAME pH ORP TRANSMITTER TAG NO T MODEL PH202 Hees ORDER_NO SERIAL NO Cd APPEARANCE REH 7 100M Q 500V DC R amp 18 H INSPECTION ITEM R RESULT INSULATION BETWEEN POWER SUPPLY TERMINALS AND EARTH TERMINAL G RESISTANCE 100M Q OR MORE 500V DC 11917 G Fl 100 OR MORE 500V DC BETWEEN INPUT TERMINALS 11 TO 17 AND EARTH TERMINAL G 100M Q OR MORE 500V DC MEE 600V 2 fi DIELECTRIC BETWEEN POWER SUPPLY TERMI
94. be set up to hold the last measured value or a fixed value to suit the process Service This selection provides access to the service menu SERV 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 IM12B07D02 01E Parameter setting 5 7 ELN 5 2 1 Output range ACI 7 a ENT EXA PHOS YOKOGAWA Note When is enabled codes 02 and 31 the output range is set a similar way to pH X YES NO IM12B07D02 01E 5 8 Parameter setting 5 2 2 Hold YOKOGAWA YES X X XH T FE HOLD deactivated return to commissioning menu X A E YES 9 XH HOLD active last measured value YES
95. been previously set up in service code 52 in chapter 5 Automatic calibration See calibration section 6 AUT CAL Manual calibration See calibration section 6 MAN CAL Sample calibration See calibration section 6 SAMPLE Display setting See operation section 4 DISP Manual impedance check See parameter setting 5 1 4 and 5 3 5 code 51 MAN IMP Temperature Set automatic or manual compensation and adjust manual reading TEMP when pH is set in section 5 service code 01 See adjustment proce dure in 5 1 1 Set automatic reading when is set in Section 5 service code 01 See adjustment procedure 5 1 2 Hold Manually switch on off HOLD when enabled in commissioning menu HOLD section See adjustment procedure in 5 1 3 IM12B07D02 01E 5 2 Parameter setting 5 1 1 Manual temperature selection and adjustment pH selected in service code 01 Use ENT keys to adjust and enter manual temperature setting IM12B07D02 01E Parameter setting 5 3 5 1 2 Process temperature measuring in ORP mode ORP selected in service code 01 EXAPHEO YOKOGAMA Display return to measuring mode with temperature reading MEASURE
96. caused by exposure of the circuitry to condensation The EXA analyzer contains a logbook feature which needs a clock to provide the timings The EXA instrument contains a lithium cell battery 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 for the sensor system NOTE Maintenance advice listed here is intentionally general in nature Sensor maintenance is highly application specific The sensor system must be kept clean to function well This may require regular cleaning of the elec trodes The effect of dirty electrodes will be to slow the system response and perhaps corrupt the measuring loop entirely The frequency of cleaning and the method of cleaning will depend entirely on the process Where a refillable flowing electrolyte reference system is employed make sure that the reservoir is kept topped up The rate of electrolyte consumption will again be process dependent so experience will show how often you must refill The periodic recalibration of the sensor system is necessary to ensure best accuracy This takes into account the aging of the sensors and the nonrecoverable changes that take place These processes are slow however If frequent recalibration is needed it is usually because the cleaning process is not effec tive the calibra
97. cribed in detail in the instruction sheet provided with the cable IM 12B0702 01E Appendix 11 3 11 3 1 Connection cable To connect the other sensor systems follow the general pattern of the terminal connections as listed below 11 amp 12 Temperature compensation resistor input Pt100 Pt1000 5 1 8 55kONTC 3500 6 8kOPTC 10 13 Input 2 normally the reference element 14 Liquid earth solution ground connection 15 Input no 1 normally the measuring element 16 Screen shield for input no 1 17 Screen shield for input no 2 In connecting to a general purpose pH sensor In connecting to a gerneral purpose ORP sensor WTB10 PH1 1 PH202G S WTB10 PH1 1 PH202G S _ Terminal Box _ pH ORP transmitter _ Terminal _ pH ORP transmitter te 172 i 0150 i 2 46 i H PH8ERP 1 1 OR8ERG 1 i PH8EHP i E7013 0130 3 012 0120 i Ono LO In connecting to a special purpose sensor In connecting to a special purpose ORP sensor WTB10 PH2 3 202 WTB10 PH1 1 PH202G S Terminal Box pH ORP transmitter Terminal Box pH ORP transmitter t 2 HA405 01504 N T c HF405 i DPA405 485 i O16 1 DPAS405 130 DPAS485 013 0120 SA405 14 i Souo i 1 Terminal is used only when pH ORP transmitt
98. cturer s live maintenance procedures The cable used to interconnect the devices needs to comply with the following parameters Loop resistance R 15 150 Inductance per unit length L 0 4 1 mH km Capacitance per unit length C 80 200 nF km C C line line 0 5 line screen if both line are floating C C line line line screen if the screen is connected to one line Length of spur cable 30 Length of trunk cable max 1 km Length of splice max 1 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 Application Doc No 025 10 P 4 to P 5 IM 12B07D02 01E 2 16 Specification 2 12 Control Drawing of PH202S FF PB Specification Intrinsically safe FISCO FM Class DIV 1 Group ABCD for ambient temp lt 55 Sensor Connections PH202S F Max cablelength 60 mtr or PH202S P Cable dia 3 12 mm 15 FM Approved Connection FISCO barrier a i d EM Approved i B FM Approved i Voc Vt 17 5 V Terminator Terminator loc It 380mA 90 1000 iR 90 1000 Poc Pt 5 32 W ic 0 22yF iC 0 22yF i Transmitter Transmitter d O d O O Division
99. detail Default values Communication 60 COMM Communication Set HART communication Off 1 0 On Set HART communication On write enable write write protect enable Set communication PH201 B Without half time check With half time check ADDR Network address Set address 00 to 15 00 61 HOUR Clock setup Adjust to current date and time using MINUT gt and ENT keys SECND YEAR MONTH DAY 62 Erase logbook Press YES to clear logbook data 63 69 Not used Code Display Function Function detail Default values General 70 LOAD Load defaults Reset configuration to default values 71 78 Not used 79 CUST D Load Customer Defaults Reset configuration to default values except buffer tables Code Display Function Function detail Default values Test and setup mode 80 5 Test and setup Not used IM12B07D02 01E Calibration 6 1 6 CALIBRATION 202 be calibrated three distinct ways 6 1 Automatic calibration This method uses internally programmed buffer tables from Service Codes 24 25 and 26 to calculate the buffer value at the actual temperature during the calibration In addition the stability of the reading is automatically calculated and when the reading has stabilized fully automatic adjustments of
100. e adc duda ea Gels gaz 4 1 4 2 Explanation of operating 222 12 11 1 21 4 1 4 2 4 3 Setting passcodes mM x SQ 4 3 4 3 1 Passcode 4 3 4 4 Display 4 3 4 5 Display functions RC cT s 4 4 4 5 1 Display functions pH 4 4 4 5 2 Display functions pH 4 5 4 5 3 Display functions pH 4 6 SM Parameter sie 5 1 5 1 caede tec 5 1 5 1 1 Manual temperature selection and 5 2 5 1 2 Process temperature measuring in 5 3 5 1 3 Manual activation of 4 emeret nnne nennen nennen ens 5 4 5 1 4 Manual impedance Check rte et ctt x er der eet den ree o aae 5 5 5 2 Commissioning MOdE mc 5 6 5 2 1 OUTPUT TANGO weiss 5 7 5 2 2 5 8 5 233 SGIVICQ 5 10 5 3 Notes for guidance in the use of service coded settings 5 11 5 3 1 Parameter specific functions e eer EE epe ra 5 11 5 3 2 Temperature compen
101. e 6 A1726JD 1 Pin Terminal Unit 3 terminals type 7 K9184AA 1 Screw Terminal Unit when TB specified 8 K9661HR 2 Stud 9 Analog Board Assembly K9661PA 1 For mA HART K9661PC 1 For FF Profibus 10 1 Digital Display Board K9661AV 1 For mA HART K9661AW 1 For FF Profibus 11 K9660YQ 1 Screw Assembly to fix amplifier 12 K9660YP 1 Stainless steel screw assembly to fix cover 13 Adapter Assembly K9414DH 1 For G1 2 screw when AFTG specified 2 units K9414DJ 1 For 1 2NPT screw when ANSI specified 2 units 14 Comm Board Assembly K9661MA 1 9661 1 For Profibus Do not exchange these parts Call service personnel Copyright 2007 1st Edition Mar 2007 YK CM PL 1 2B07D02 03E YOKOGAWA 9 Subject to change without notice 2nd Edition Aug 2007 YK Yokogawa Electric Corporation Pipe Wall Mounting Hardware Option Code U 1 X Panel Mounting Hardware Option Code SCT Hood to sun protection LE Option Code ltem Parts No Qty Description 1 K9171SS 1 Universal Mount Set U 2 K9311BT 1 Tag Plate SCT 3 K9311KA 1 Fitting Assembly PM 4 K9311KG 1 Hood Assembly H K9660JA 1 Hood Assembly H2 CMPL 12B07D02 03E 2nd Edition Aug 2007 Customer Model PH202S Style 3 L pH ORP Transmitter Parts List ltem Part No Qty Description 1 Cover Assembly K9315CA 1 Polyurethane Coating K
102. e is the direct entry of calibration data using the Service Code Menu refer to Chapter 5 For example the sensor may be calibrated in a test laboratory and then transported to its location in the field and the sensor parameters entered into the associated PH202 Service Code 23 allows you to access and enter ITP Asymmetry Potential or Zero Point and Slope parameters 12B07D02 01E 11 12 Appendix 11 5 5 Calibration Procedure 1 Manual Calibration This involves calibration by direct entry of ORP sensor zero offset 1 Press the MODE key 2 MAN CAL is displayed If you press NO then you will proceed to calibration with sample 3 Press YES 4 NEW SNS is displayed asking if you wish to change the sensor parameters as for a new sensor 5 If you press YES then the existing calibration data stored in PH202 memory is deleted If replacing the sensor is not desired press NO 6 In either case ORP CAL is displayed 7 If you press YES then START is displayed and you should immerse the sensor in the test solution If you press NO then you will proceed to Calibration with Sample see 2 following 8 Next press YES again then 0000 mV is displayed so enter a suitable zero offset value and press ENT CAL END is displayed 9 Press YES and WAIT is displayed for a moment then the PH202 reverts to measurement mode 2 Calibration with Sample This involves calibration by adjusting the PH202 to read the same as the ORP value derived b
103. earth disconnented Insufficient electrolyte Process too hot or too cold Wrong temperature sensor setting Temperaure sensor damaged Check or replace sensor Check sensor immersion Check electrolyte reservoir Check process Check sensor amp setting Check connections Temperature sensor open lt 30 or gt 120 for 8 55 Process too hot too cold Wrong temperature sensor used Temperaure sensor damaged Check process Check sensor amp setting Check connections Measurement out of range 2 to 16 pH for pH 1500 to 1500 mV for ORP Sensors disconnected Sensor wrongly connected Sensor s defective Check cabling Check cabling Replace sensor s EEPROM write failure Fault in eledtronics Try agein if unsuccessful contact Yokogawa Wash recovery check error if communication is set to PH201 Style B in code 60 ORP rH outside of preset limits Measring sensor aged Sensor still coated after washing Defective wash system Sensors disconnected or wrongly connected Replace measuring sensor Check cleaning system if needed adjust timings Check cabling No valid calibration data Cable resistance to temperature sensor exceeds limit value Data lost after switching from pH to ORP Cable resistance too high Corroded contacts Wrong sensor programmed Recalibrate Use Pt1000 Clean and reterminate Reprogram Call for maintenance interval time exceeded System no
104. eas 3 4 3 3 3 Installation in Hazardous Area Non Incendive 0022 0 0 0 00000 3 5 3 3 4 Liquid CANN 3 5 3 3 5 Access to terminal and cable 3 5 3 4 Wiring Of power supply saccanieweteidsistsdsceleeswencntdsaiadavanercteietedadecacarecerindierdsuadedeuse 3 5 3 4 1 General precautions 3 5 3 4 2 Connection of the power supply 3 6 3 4 3 Switching the instrument 3 6 3 5 Wiring the Sensor 3 7 3 5 1 Impedance measurement jumper 3 7 3 8 3 6 1 Connection 3 9 3 6 2 Sensor cable connection with special 3 10 3 6 3 Sensor cable connections using junction box 10 and extension cable WF 10 3 11 3 6 4 Connection VP type ETENEE E 3 11 In this manual a sign appears if it concerns the PH202G S E C U N K IM 12B07D02 01E 11th Edition Oct 2009 YK All Rights Reserved Copyright 2000 Yokogawa Electric Corporation IM 12B07D02 01E 4 Operation Display Functions And Setting 4 1 4 1 Operator interfac
105. ection and safety of the human body the product and the system containing the product IM 12B07D02 01E The following safety symbols used on the product as well as in this manual A DANGER This symbol indicates that an operator must follow the instructions laid out in this manual in order to avoid the risks for the human body of injury electric shock or fatalities The manual describes what special care the operator must take to avoid such risks N WARNING This symbol indicates that the operator must refer to the instructions in this manual in order to prevent the instrument hardware or software from being damaged or a system failure from occurring This symbol gives information essential for understanding the operations and functions This symbol indicates Protective Ground Terminal This symbol indicates Function Ground Terminal Do not use this terminal as the protective ground terminal rw This symbol indicates Alternating current This symbol indicates Direct current IM 12B07D02 01E 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 shipment from the manufacturer Individual sales organi zations can deviate from the typical warranty period and the conditions of sale relating to the original purchase order should be c
106. edance low input 2 Impedance low input 2 Impedance higt input 2 Impedance high input 2 Temperrature too high Temperrature too high Temperrature too low Temperrature too low pH out of range pH out of range Wash recovery check Wash recovery check Call for maintenance Call for maintenance Soft fail Hard fail Soft fail Hard fail Soft fail Hard fail Soft fail Hard fail Soft fail Hard fail Soft fail Hard fail Soft fail Hard fail Soft fail Hard fail Soft fail Hard fail T5 3 5E eps IM 12B07D02 01E 11 10 Appendix 11 5 Calibration in Mode For an ORP meter unlike the case for a pH meter there is no predefined standard solution that you must use for calibration For an ORP meter normal maintenance is limited to a check of the electrodes Electrode checks and calibration are performed in the following circumstances Electrode Check When you change the ORP sensor or when you stop continuous operation When you wash the sensor tip or liquid path of the ORP sensor Calibration When the electrode potential is out of limits When you want two or more ORP meters to read as near as possible to the same value Note There are two ways of calibrating the PH202 in ORP mode but both are one point calibration zero shift 1 Manual calibration MAN CAL and 2 Calibration with sample SAMPLE If you use the FU20 combination pH and ORP sensor then you can calibrate ORP using t
107. elect YES NO then set value with gt ENT keys Press to change to ASP Set As Pot For the main parameter Press YES to confirm 1 mV resolution then set value with gt ENT keys 24 BUF ID Buffer table 4 Buffer tables to NIST formerly NBS 25 BUF ID Buffer table 7 see section 10 for table details 26 BUF ID Buffer table 9 User adjustable for special requirements 27 ZERO P Enable zero point in Disable zero point enable As Pot 0 Disabled pH units Enable zero point disable As Pot 28 29 Not used IM12B07D02 01E 7 ITP ero Point pH Parameter setting 5 17 5 3 4 mA output functions Code 31 Code 32 Code 35 Table 5 2 OUTP F BURN TABLE When is set in code 01 as the main parameter the output functions may be set as follows 0 pH 1 pH table 2 Parameter 2 ORP or rH as set in code 02 When is set in code 01 as the main parameter the output functions may be set to 0 ORP 1 ORP table Diagnostic error messages can signal a problem by sending the output signals upscale or downscale 21 mA or 3 6 mA when HART or distributor comm is non used 3 9 mA when HART or distributor comm is used This is called upscale or downscale burnout from the analogy with thermocouple failure signalling of a burned out or open circuit sensor The pulse burnout setting gives a 21 mA signal for the first 30 seconds of an alarm condition After the pulse
108. ems 2 1 Insulation resistance test 2 2 Dielectric strength test 2 3 Temperature indication check 2 4 pH indication check 2 5 ORP indication check 2 6 Profibus communication functional check Note Items marked with an asterisk may only be confirmed by a test certificate 3 Inspection Methods Standards and Conditions e Connectthe testing circuit as shown in Figure 1 Allow the instrument to warm up for at least 5 minutes before conducting the tests For the connections for the insulation resistance test follow the instructions in Section 3 1 and for the connections for the dielectric strength test follow the instructions in Section 3 2 e Use test equipment shown in Figure 1 or equivalent for the tests 3 1 Insulation Resistance Test 1 Apply 500 V DC between the power supply terminals shorted together and and the earth terminal G The insulation resistance must be 100 MO or greater 2 Apply 500 V DC between the input terminals shorted together 11 to 17 and the earth terminal G The insulation resistance must be 100 MO or greater 3 2 Dielectric Strength Test Required Only for PH202S Apply 600 V AC an AC voltage of substantially sinusoidal waveform with a frequency of 50 Hz or 60 Hz between the terminals shown below for at least 2 seconds The insulation must withstand this voltage The sensed current should be 10 mA 1 Between the power supply terminals shorted together and and the earth
109. end AUT CAL appears and the YES NO key prompt flags flash Press NO The display MAN CAL appears Press YES to start calibration Press YES or NO at NEW SNS prompt EXA YOKOGAWA gt Note Press NO to start calibration of zero point when enabled in Service Mode Put sensors in buffer solution Press YES Set the value using the gt ENT key Select the flashing digit with the gt key Increase its value by pressing the key When the correct value is displayed press ENT to enter the change YES WAIT is displayed briefly then EXA returns to measuring mode For 2 point As Pot and Slope Adjustment select second buffer solution and adjust as for pH7 buffer IM 12B07D02 01E Calibration 6 5 Manual Calibration of Manual Calibration of mV zero point according offset for ORP 2nd parameter to IEC 60746 2 Where both pH and ORP or rH When enabled in service are measured the offset Asymmetry code 27 potential of the second parameter is calibrated as shown below When enabled in service code 02 Adjust value Adjust value with gt A ENT Keys with gt A ENT Keys
110. ensor The impedance limits will need to be adjusted to get the best from systems using heavy duty or fast response electrodes The impedance measuring system has a very wide span requirement As it can measure in and also in 109 there are hardware switches to set high range 1MO to 2 GQ or low range 1kO to 1MQ measuring As a default the system is set to measure high impedances on input 1 the one normally used for the pH glass sensor input and low impedances on input 2 the one normally used for the reference input Examples of where these settings need to be changed from the default are Pfaudler enamel sensors which need two high impedance settings and Platinum sensors with a standard reference which need two low impedance settings The temperature compensation of the impedance measurement is for conven tional pH glass sensors When other sensors are used switch this feature off The calibration checking feature when enabled gives security against entering wrong calibration data For example when aged sensors are due for replacement the EXA flags an error message and prevents a calibration being completed where the subsequent measurement can only exhibit errors and drift Limits are set for the maximum permissible Asymmetry potential and Slope IM12B07D02 01E 5 12 Parameter setting Code Display Function Function detail Default values Parameter specific functions 01 PH ORP Select main par
111. er is installed far from the cable length of pH ORP sensor 2 The cable is specified by an option code of the terminal box 3 Use the box in combining PH202 with SA405 F3 6 1E eps Figure 11 1 Wiring of a sensor IM 12B07D02 01E 11 4 Appendix In connection of the PH202G and a special purpose pH sensor having temperature element Core cable number Terminal number of of pH sensor pH ORP transmitter HA406 PH202G S DPA406 pH ORP transmitter 14 16 15 13 Two core cable numbered by 14 are connected 13 O 13 to the No 14 terminal of the 202 S Nothing is connected to the 16 terminal 12 7 of the PH202G S 11 O 11 14 14 In connection of the PH202G S and FU20 pH ORP sensor 202 FU20 pH ORP transmitter 11 O 12 12 13 O 13 14 O 14 15 O 45 16 16 F3 6 2E eps Figure 11 2 Optional Sensor wiring NOTE pH sensor ORP sensor GE 15 Red GE 15 Red RE 13 Brown RE 13 Brown T1 11 Black SE 14 Black T2 12 White G 16 Green SE 14 Green S 16 Yellow When PH202 TB option specified for using the sensor with folk terminal for 200 400 OR200 OR400 type Use the cable gland within the transmitter For wiring refer to right figure Cables terminals and glands For the PH202G PH202SJ use cable of outside diameter 6 to 12 mm When using individual electrodes glass electrode reference electrode and se
112. et menu as pot or Chapter 5 zero point 4 53 e Lt Lt Lt Efficiency 2 slope No 4 Z SETHOLD i hse ms PR re line of display NO C gt A ENT C Im XOKI wa 12C6C3 20 1 ai IM 12B07D02 01E 4 5 2 Display functions ORP Operation 4 5 Measuring Mode DISPLAY As Pot Display 2 See Man Imp Check chapter 5 YES Service Code 01 Set for pH Service Code 02 Set for ORP on parameter 2 Logbook Scrolling Logbook data is available only in instruments with PIN for advanced function The display can give information about calibrations performed with date and time The example below shows Asymmetry Potential Scrolling of Data is also available on Slope As Pot ORP Impedance Input 1 Impedance Input 2 When these functions are enabled in Service Codes See Temp Menu chapter 5 See Hold Menu chapter 5
113. ether 11 to 17 and the earth terminal The insulation resistance must be 100 or greater As for the PH202SJ follow the instructions below 1 Apply 125 V DC between the power supply terminals shorted together and and the earth terminal The insulation resistance must be 9 5 or greater 2 Apply 125 V DC between the input terminals shorted together 11 to 17 and the earth terminal The insulation resistance must be 100 or greater 3 2 Current Output Test Connect the instruments as shown in Figure 1 and set them as follows Connect a shorting bar between terminals LOW and IMP Decade resistance box 921 6 O Standard voltage current source 0 mV DC source 24 V DC Use the following procedure to enter the inspection mode 1 Entering Service Code 87 Press the key The message display will show OUTP Press the NO key until the message display shows SERV Press the YES key The data display will show 00 with the first digit of 0 flashing Press the key eight times The data display will show 80 with the first digit of 8 flashing Press the gt key once The data display will show 80 with the second digit of 0 flashing YOKOGAWA QIS 12B07D02 01E Yokogawa Electric Corporation ISt Edition Reb 2001 YK 6th Edition Mar 2007 12B07D02 01E 12 2 2 3 f Press the key seven times d
114. ether the test solution was fresh and whether it was mixed in the correct amounts see mixing instructions above Tolerance Tolerance 0 10 20 30 40 50 Temperature C F6 1E eps Fig 11 3 ORP of Test Solution 7 Replace the sensor in its holder WARNING Be careful to make sulfuric acid solution 11 5 2 Manual Calibration The procedure for calibration is described in 11 5 5 1 Calibration is performed by using a solution of known ORP value and adjusting the PH202 to read the same value Alternatively you may calibrate the PH202 to read the same as another standard instrument in a given solution The electrode check described in 11 5 1 above is performed if the measured value appears to be well out of tolerance Calibration of the ORP value is performed by zero shift one point calibration 11 5 3 Calibration with Sample The procedure is described in 11 5 5 2 Calibration with a sample enables measuring a representative sample e g by laboratory analysis while the ORP sensor is on line and measuring the same sample solution saving the measured data in the memory of the PH202 and then adjusting the PH202 to read the same value as obtained e g by laboratory analysis So normal on line control or pH measurement is not affected The ORP measurement is calibrated by zero shift one point calibration 11 5 4 Data Entry If the above methods of calibration present problems another alternativ
115. fied i Terminator p 9 Terminator i Transmitter i Transmitter i 4 Safe area Zone 0 or 1 Hazardous area e Sensor s are of a passive type to be regarded as simple apparatus e Electrical data of the PH202S F amp PH202S P or Supply and output circuit Maximum input voltage Ui 24 V Maximum input current li 250 mA Maximum input power 1 2 W Effective internal capacitance Ci 220 pF Effective internal inductance Li 0 pH FISCO field device Maximum input voltage Uiz17 5 V Maximum input current li 380 mA Maximum input power Pi 5 32 W Effective internal capacitance Ci 220 pF Effective internal inductance Li 0 pH Sensor input circuit Maximum output voltage Uo 14 4 V Maximum output current lo 32 3 mA Maximum allowed external capacitance Co 600 nF Maximum allowed external inductance Lo 34 mH e Any 1 5 interface may be used that meets the following requirements FISCO power supply Uox24V lt 17 5 lo lt 250 mA lo lt 380 mA lt 1 2 W lt 5 32 W gt 220 pF Lo20 Lcable e Electrical data of the 2025 amp PH202S D Type of protection Supply and output circuit Maximum input voltage Ui 32 V Effective internal capacitance Ci 220 pF Effective internal inductance Li 0 pH Sensor input circuit Maximum output voltage Uo 14 4 V Maximum output current lo 32 3 mA Maximum al
116. g Menu pointer flags Units GSEs It COC VLEET YES ENT Main display Commissioning function menu Message display yvvvvv 5 Key prompt flags Selection keys YES Accept setting NO Change setting PR mode key P keys ENT Choose CD Broken line indicates area that can be adjust Adjust digit EXAM O2 YOKOGAWA seen through front cover ENT Confirm change Commissioning mode access key Measure Maintenance Figure 4 1 PH202 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 AUT CAL MAN CAL DISP SETPOINT WASH MAN IMP TEMP HOLD 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 P gt used as a cursor key Each press on this 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
117. gital Supply voltage 9 to 32 V DC Operating current 26 0 mA Operating values According to IEC 1158 2 Bus connection Fieldbus interface base on 1158 2 according to FISCO Model Power supply Power supply is achieved de pendant on the application by means of segment coupler Data transfer According to PROFIBUS PA profile class B based on EN 50170 and DIN 19245 part 4 GSD file The actual file can be down loaded from www profibus com Configuration Local with 6 keys Software Firmware based on Siemens DPC31 stack Hardware or PCMCIA interfaces from Siemens Other control Siemens PDM systems Electrical connection Terminals acc to IEC 1158 2 Fieldbus cable types Twisted and shielded two wire cable according to recommendation based on IEC 1158 2 Cable diameter 6 to 12 mm 0 24 to 0 47 inch Specification 2 5 FOUNDATION FIELDBUS H1 communications Input signal Digital Supply voltage 9 to 32 V DC Operating current 26 0 mA base current Operating values According to IEC 1158 2 Bus connection Fieldbus interface based on IEC 1158 2 according to FISCO Model F Power supply Power supply is achieved dependant on application by means of segment coupler G Data transfer FF specification Rev 1 4 Basic device H Function blocks 3 x Al Transducer Resource Files Actual file can be downloaded from our homepage J Configuration locally with 6 keys
118. gram above These safety descriptions cover most of the commonly used industry standard barriers 1solators and power supplies Hand Held Communicator must be of a IECEx certified intrinsically safe type in case it is used on the intrinsically safe circuit in the hazardous area or of a IECEx certified nonincendive type in case it is used in the nonincendive circuit in the hazardous area IM 12B07D02 01E 2 8 Specification 2 5 Control Drawing of PH202S mA HART Specification Intrinsically safe design CENELEC standard EEX ia IIC T4 for ambient temp lt 55 C ia or ib T6 for ambient temp lt 40 C Certified safety barrier or power Certificate nr KEMA 06ATEX0218 X ae as PH202S pH ORP transmitter P 24 volts DC Nominal Supply Voltage o Uo 31 5 Volt DC o G lo 100 mA x SENSOR S terminals 11 17 Functional Functional earth earth Load Resistance Hazardous area Safe area 4 Zone 0 or 1 lt Intrinsically safe design CENELEC standard EEx ia T4 for ambient temp lt 55 C EEx ia or ib Certified Repeater T6 for ambient temp lt 40 C Power Supply Certificate KEMA 06ATEX0218 X HART Compatible PH202S pH ORP transmitter o Output Uo 31 5 Volt DC O Io 100 mA O
119. he 2nd parameter setting as per the section 6 5 3 Manual Calibration 11 5 1 Electrode Check To determine whether the electrode is normal not a solution of known is measured to check if the measured value is within tolerance see Fig 11 3 This is done in measurement mode Electrode test solution A solution of known ORP Oxygen Reduction Potential is used Usually quinhydrone or ferric chloride solution is used as the test solution Yokogawa sells the following chemicals for making test solution The procedure for mixing solution is described below Quinhydrone salts P N K9024EC and Ferrous amp Ferric salts P N K9024ED Procedure for Electrode Test You determine whether or not the ORP sensor is normal by measuring the ORP of a test solution of known ORP and determining if the measured value is within tolerance Before starting normal operation when you need to check if the ORP sensor is normal or not use the procedure below A solution of known ORP is measured to check if the measured value is within tolerance Here we describe how to mix test solutions using the quinhydrone salts supplied with the OR8AX accessory kit or the ferrous salts that are sold separately by Yokogawa 1 Mix test solution lt To mix quinhydrone test solution gt Pour one packet of quinhydrone into a wide mouth 250 ml beaker and dissolve in pure water to make 250 ml of solution If the pure water is cold the powder will not complete
120. his is a composite value that indicates the oxidizing power of a solution com pensating for the influence of the acid or alkaline components The scale is 0 55 rH where oxidizing solutions provide the highest readings This is the difference between the isothermal point of intersection and the zero point This is the sensitivity of the pH electrode mV pH usually expressed as a of the theoretical value Nernst This is the isothermal point of intersection This is the value in pH at which the temperature response of the system is at a null point In other words the point of intersection of the temperature lines on a graph of milli volts vs pH This point is critical to the correct operation of the temperature compensation circuitry This is the value of pH at which the electrode combination yields 0 mV as an output 2004 0 12B07D02 01E Appendix 11 1 11 APPENDIX 2 11 1 Feasible combinations of the PH202G pH ORP transmitters with different styles of the PH201G distributor are listed in the table below The distributor has the usual distributor functions supply power to transmitter receive current output from transmitter and provide analog output as well as contact output functions maintenance wash and fail status signals Since the two transmitters provide different digital signals to control the distributor contact outputs two distributor styles are provided for comp
121. ide first which application and which settings are appropriate for the installation This decision is best made before the jumpers are installed because the cables will rest beside the jumpers in their installed positions Table 3 1 Impedance measuring jumpers Figure no Jumper Settings Jumper Settings Application amp Sensor Connections Input 1 Input 2 1 High Impedance Low Impedance Normal pH sensors Glass sensor on Input 1 Reference sensor on Input 2 2 High Impedance High Impedance Special electrodes using 2 glass sensors e g Pfaudler 18 3 Low Impedance High Impedance ORP pH compensated and or rH metal sensor on Input 1 pH glass as reference on Input 2 4 Low Impedance Low Impedance ORP Redox measurement metal sensor on Input 1 Normal reference on Input 2 For convenience insulated jumper links are provided Ordinary wire links can also be used and are just as effective The following four jumper figure illustrations figure 3 8 show the jumper positions related to the figure numbers in the above table T T 1 G 11 12 14 17 13 tow me 15 16 Setting on shipment SUPPLY L TEMP LE INPUT 2 INPUT 1 T T 2 G 11 12 14 17 13 Sow me 15 16 SUPPLY TEMP LE INPUT 2 INPUT 1 T T T T T
122. in accordance with Article 501 4 B 3 e Grounding shall be in accordance with Article 250 of the National Electrical code e case of using cable glands in Outdoor location they shall be UV rated or made of metal WARNING Substitution of components may impair suitability for Division 2 not remove or replace while circuit is live unless area is know to be non hazardous Explosion Hazard Do not disconnect equipment unless area is know to be non hazardous not reset circuit breaker unless power has been removed from the equipment or the area is know to be non hazardous Application Doc No IKE025 A10 P 8 IM 12B07D02 01E Specification 2 19 2 14 Control Drawing of PH202S FF PB Specification Non incendive FNICO FM Class DIV 2 Group ABCD FM Approved Power Supply E Voc x 32 VDC iFM Approved T4 for ambient temp lt 55 C Sensor Connections PH202S B Max cablelength 60 mtr 2025 Cable dia 3 12 mm Connection i Terminator j iR 90 1000 iC 0 22yuF iC 0 22yF 564 i Transmitter Transmitter 1 Division 2 Unclassified Location Classified Location Sensor s are of a passive type to be regarded as simple apparatus devices which neither store nor generate voltages over 1 5 V currents over 0 1 A power over 25 mW or energy over 20 uJ are FM Ap
123. in case it is used in the non incendive circuit in the hazardous area IM 12B07D02 01E Specification 2 9 2 6 Control Drawing of PH202S mA HART Specification FM Intrinsically safe design Intrinsically safe design 7 is FM Class I Div l Group ABCD 4 for ambient temp lt 55 FM Approved safety barrier or power supply PH202S transmitter with Rint 300 HART compatible 24 volts DC Nominal Supply Voltage B Sensor s For electrical data terminals 11 17 see text below NT cablelength 60 mtr rin Cable dia 3 12 mm earth Load Resistance q Classified Location Unclassified Location Figure 1 Intrinsically safe design FM Approved FM Class I Div 1 Group ABCD T4 for ambient temp lt 55 C Power Supply PH202S transmitter HART compatible Output o 0 u to Go ro Supply Sensor s For electrical data terminals 11 17 seeitextibelows Functional Max cablelength 60 mtr ea Cable dia 3 12 mm 4 Classified Location g nclassified Location Figure 2 Electrical data of the PH2028 Supply 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 Ci 22 nF Effective internal inductance Li 3
124. ion ground y o 13 Reference 14 Solution ground 15 Glass measure 16 Shield 15 Glass measure Blue 6Shield o 47 Blue 17Shield x Cable markers FU20 FU25 4 in one sensor Note Connect cables to similarly marked terminals 11 to 11 12 to 12 etc 11 Temperature i 12 Temperature 13 Reference 14 Solution ground 15 Glass 16 Shield 17 Shield Green Red 11 Temperature 12 13 Reference 14 Solution ground 15 Glass measure 16 Shield i 17 Shield 7 CESS Retractable sensor assembly PR20 Also PD20 20 amp 520 k Cable markers NOTE Connect cables to similarly marked terminals 11 to 11 12 to 12 etc Combined pH ref sensors Figure 3 10a Sensor wiring IM 12B07D02 01E 3 10 Installation and wiring o 11 Temperature 11 Temperature Yellow 913 Temporaire o 12 2 Blue Black j lue 13Reference 1 Solution around 14 Solution ground 15 Metal measure Blue lt 16 Shield Blue 15 Metal measure 17Shield j 16 Shield 17 Shield Cable markers Cable markers Separate electrodes ORP REF electrode Combined ORP pH electrode Notes 11 Temperature 12 1 A temperature
125. is also signalled Table 11 1 Error Codes Error description Buffer solution temoerature outside the programmed range Possible cause Buffer solution too hot or too cold Suggested remedy Adjust buffer temperature Check cabling Measurement failed to stabilize during the calibration Sensors fouled Sensors too slow aged sensor Clean sensors Replace sensors Asymmetry potential too high Limits set in service code 21 Slope sensitivity is outside limits Limits set in service code 22 Sensors are aged or polluted Mistake in calibration Measuring sensor aged Poor insulation at the connector Check buffer solution Recalibrate at pH7 Replace sensor Replace measuring sensor Replace or dry cables Impedance of input 1 too low Limits set in service code 03 Measuring sensor broken Dameged or damp connections Replace measuring sensor Replace or dry cable Impedance of input 2 too low Limits set in service code 04 Measuring sensor broken Dameged connections Replace measuring sensor Replace cable Impedance of input 1 too high Limits set in service code 03 Measuring sensor disconnected Sensors not immersed in process Liquid earth disconnented Check connections Check porocess Check connentions Impedance of input 2 too high Limits set in service code 04 Temperature sensor open gt 140 10 C for 8 55kO Reference sensor fouled Liquid
126. is manual should be passed on to the end user The contents of this manual are subject to change without prior notice The contents of this manual shall not be reproduced or copied in part or in whole without permission This manual explains the functions contained in this product but does not warrant that they are suitable the particular purpose of the user Every effort has been made to ensure accuracy in the preparation of this manual However when you realize mistaken expressions or omissions please contact the nearest Yokogawa Electric representative or sales office This manual does not cover the special specifications This manual may be left unchanged on any change of specification construction or parts when the change does not affect the functions or performance of the product If the product is not used in a manner specified in this manual the safety of this product may be impaired 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 Improper operation by the user Use of the instrument in improper applications Use of the instrument in an improper environment or improper utility program Repair or modification of the related instrument by an engineer not authorized by Yokogawa Safety and Modification Precautions Follow the safety precautions in this manual when using the product to ensure prot
127. itter turn on the power again and enter the inspection mode to restart the tests 3 1 Insulation Resistance Test 1 Apply 500 V DC between the power supply terminals shorted together and and the earth terminal G The insulation resistance must be 100 MO or greater 2 Apply 500 V DC between the input terminals shorted together 11 to 17 and the earth terminal G The insulation resistance must be 100 MO or greater 3 2 Dielectric strength test Apply 600 V AC an AC voltage of substantially sinusoidal waveform with a frequency of 50 Hz or 60 Hz between the terminals shown below for at least 2 seconds The insulation must withstand this voltage The sensed current should be 10 mA 1 Between the power supply terminals shorted together and and the earth terminal G 2 Between the input terminals shorted together 11 to 17 and the earth terminal G 3 Between the input terminals shorted together 11 to 17 and the power supply terminals shorted together and YOKOGAWA QIS 12B07D02 21E Yokogawa Electric Corporation 184 Edition Mar 2007 12B07D02 01E 12 6 3 3 3 4 2 3 Current Output Test Connect the instruments as shown in Figure 1 and set them as follows Connect a shorting bar between terminals LOW and IMP Decade resistance box 92160 Standard voltage current source 0 mV DC source 24 V DC Use the following procedure to enter the
128. lay mV 1500 1500 1 0 0 1 1500 1500 1 Press the ENT key until the message display shows READY Press the ENT key again to end the tests PH202G PH202SJ SUPPLY TEMP LE INPUT 2 INPUT 1 Tr 1 13 LOWIMP HIGH IMP 3000 Shorting bar Resistance Box Standard Voltage Source Figure 1 Testing Circuit and Test Equipment QIS 12B07D02 01E IM 12B07D02 01E 12 4 R OX TEST CERTIFICATE Mh 53535 AF PRODUCT NAME pH ORP TRANSMITTER TAG_NO T MODEL PH202G PH202SJ FBCNo ORDER SERIAL AIA A INSPECTION ITEM 4 RESULT 7 Gm INSULATION 1100 Q 500V DC PH202G L19 5M Q 125V DC PH202SJ RESISTANCE BETWEEN POWER SUPPLY TERMINALS AND EARTH TERMINAL G 1100 OR MORE 500V DC PH202G 19 5 9 OR MORE 125V DC 2025 AJ 3 11917 F G Fl L1100M 500V DC PH202G L1100M Q LE 125V DC PH202SJ BETWEEN INPUT TERMINALS 11 TO 17 AND EARTH TERMINAL G L 100M 9 OR MORE 500V DC PH202G L1100MQ OR MORE 125V DC PH202SJ HA Bit HARE 0 02mA ACCURACY 0 02 CURRENT OUTPUT AU OUTPUT mA INDICATION 248 REFERENCE SEM ACTUAL BERT PT1000 TEMPERATURE INDICATION 14983 HAZ 0 01pH ACCURACY nsn pH INDICATION INDI
129. le 3 Check Point pH Simulation Input mV Data Display pH 0 414 1 0 00 0 01 7 0 0 7 00 0 01 14 414 1 14 00 0 01 Indication Check Following Section 3 5 press the ENT key The message display shows ORP INP In this state change the simulation input as shown in Table 4 by means of the standard voltage current source and check the data display The corresponding value on the data display must be within the range shown in Table 4 Table 4 Simulation Input mV Data Display mV 1500 1500 1 0 0 1 1500 1500 1 Press the ENT key until the message display shows READY Press the ENT key again to end the tests SUPPLY 3000 24VDC 1 T 1 Decade Resistance PH202S INPUT 2 13 LOWIMP HIGH IMP Shorting bar Standard Voltage Source Testing Circuit and Test Equipment INPUT 1 QIS 12B07D02 21E IM 12B07D02 01E 12 8 TEST CERTIFICATE pH ORP zi 28 27 No PRODUCT NAME pH ORP TRANSMITTER TAG NO MODEL PH202S E B No HRES ORDER SERIAL NO APPEARANCE 8817 INSULATION RESISTANCE MEE DIELECTRIC STRENGTH EDER CURRENT OUTPUT DERT TEMPERATURE INDICATION pHm pH INDICATION INDICATION NOTES Att DATE INSPECTOR YOKOGAWA 4 IM 12B07D02 01E
130. lowed external capacitance Co 3 5uF Maximum allowed external inductance Lo 76 mH IM 12B07D02 01E Specification 2 13 2 10 Control Drawing of PH202S FF PB Specification ATEX Ex ia T4 for ambient temp lt 55 C Ui 24 V or Ui 17 5V li 250 li 380 mA i Pi 5 32 W 2025 2025 t Sensor Connections Safe area O LS 1 5 1 5 Apparatus Pa interface i certified d certified i Terminator LO i i Safe area Zone 0 or 1 Hazardous area Sensor s are of a passive type to be regarded as simple apparatus Electrical data of the PH202S F amp PH202S P Supply and output circuit or Maximum input voltage Ui 24 V Maximum input current li 250 mA Maximum input power Pi 1 2 W Effective internal capacitance Ci 220 pF Effective internal inductance 0 pH FISCO field device Maximum input voltage Ui 17 5 V Maximum input current 11 380 mA Maximum input power 5 32 W Effective internal capacitance Ci 220 pF Effective internal inductance Li 0 pH Sensor input circuit or Maximum output voltage Uo 14 4V Maximum output current 10 32 3 mA Maximum allowed external capacitance Co 600 nF Maximum allowed external inductance Lo 34 mH Any 1 5 interface may be used that meets the following requirements lt 24 V lo lt 250 mA lt 1 2 W gt 220 pF Ccable Lo gt 0 Lcable FISCO power supply
131. ltage The sensed current should be 10 mA 1 Between the power supply terminals shorted together and and the earth terminal 2 Between the input terminals shorted together 11 to 17 and the earth terminal G 3 Between the input terminals shorted together 11 to 17 and the power supply terminals shorted together and 3 3 Temperature Indication Check Connect the instruments as shown in Figure 1 and set them as follows Connect a shorting bar between terminals LOW and IMP Decade resistance box 92160 Standard voltage source DC source 24 V DC change the resistance value of the decade resistance box as shown in Table 1 The corresponding temperature indication must be within the range YOKOGAWA QIS 12B07D02 61E Yokogawa Electric Corporation ee Ration Apr IM 12B07D02 01E 12 10 3 4 3 5 2 3 Table 1 Reference Temperature Resistance Box Resistance Data Display 20 921 6 20 0 0 3 25 1097 3 25 0 0 3 130 1498 3 130 0 0 3 Indication Check Set the instrument as follows Decade resistance box 10000 Change the simulation input value of the standard voltage generator as shown Table 2 corresponding pH data must be within the range Table 2 Check Point pH Simulation Input mV Data Display pH 0 414 1 0 00 0 01 7 0 0 7 00 0 01 14 414 1 14 00
132. ly dissolve and some may float on the surface but this will not cause any problems in practice lt To mix ferrous amp ferric chloride test solution gt Pour one packet of the light purple or light green powder to a wide mouth 250 ml beaker and add a 2 mol l solution of sulfuric acid to make 250 ml of solution If you want to start with concentrated sulfuric acid mix one packet of the powder with approximately 150 ml of pure water in a wide mouth beaker then stirring vigorously add 14 ml of concentrated sulfuric acid Top up with pure water to make 250 ml 2 Transfer about 50 100 ml of test solution to a clean 200 ml beaker 3 Remove the ORP sensor from its holder If an immersion holder is used first remove the holder then remove the sensor protector from the holder 4 Wash off any of the measured solution adhering to the sensor using tap water then wipe off any moisture droplets adhering to the sensor 5 Immerse the sensor tip in the test liquid see 2 above wait for the ORP reading to stabilize this typically takes 5 to 10 minutes IM 12B0702 01E 11 11 6 After the display reading has stabilized read and note it Measure the temperature of the test solution and check the ORP of the test solution at that temperature using Fig 11 3 If the ORP reading is within the tolerance shown in Fig 11 3 then the sensor is normal Note If the measurement value is only slightly out of tolerance you should check wh
133. n an ORP sensor is used connect both terminals LOW and IMP on the upper row with a shorting bar as well both terminals HIGH and IMP on the lower row with another one 11 3 2 Sensor cable connection using terminal box you can t install a sensor close to the PH202 transmitter you may need to connect to intermediate terminal box WTB10 PH1 PH2 and use an extension cable You should order these from Yokogawa as these Yokogawa parts are specially designed so that system specifications will be met The total cable length for 5 m electrode cable plus 15 m extension cable may be up to 20 m Refer to Figure 11 1 for the wiring 11 4 PH201G B Dedicated Distributor The 202 supports proprietary bidirectional serial communications with the 201 Style B for remote maintenance washing and remote diagnostic purposes This allows PH202 status under maintenance abnormal to be monitored remotely and commands to be sent to an instrument for wash Prepare for the instrument separately Service codes 60 relates to communication settings 11 4 1 Communication setup Code 60 COMM The settings should be adjusted to suit the communicating device connected to the output The communication can be set to HART or to PH201G Style B distributor When used with our 201 Style B you can enable or disable contact outputs namely Fail contact and Hold contact The PH201G Style B can output Hold contact and Fail contact signals You can set
134. ndication Check Following Section 3 3 press the ENT key until the message display shows 1000 In this state change the resistance value of the decade resistance box as shown in Table 2 and check the data display The corresponding value on the data display must be within the range shown in Table 2 Table 2 Reference Temperature Resistance Box Resistance Data Display 20 921 6 20 0 0 3 25 1097 3 25 0 0 3 130 1498 3 130 0 0 3 3 4 Indication Check Following Section 3 4 press the ENT key until the message display shows PH INP In this state change the simulation input as shown in Table 3 by means of the standard voltage current source and check the data display The corresponding value on the data display must be within the range shown in Table 3 QIS 12B07D02 01E IM 12B07D02 01E Appendix 12 3 3 5 3 3 Table 3 Check Point pH Simulation Input mV Data Display pH 0 414 1 0 00 0 01 7 0 0 7 00 0 01 14 414 1 14 00 0 01 Indication Check Following Section 3 5 press the ENT key The message display shows ORP INP In this state change the simulation input as shown in Table 4 by means of the standard voltage current source and check the data display The corresponding value on the data display must be within the range shown in Table 4 Table 4 Simulation Input mV Data Disp
135. nel mounting using two 2 self tapping screws refer to Fig 3 2b Surface mounting on a plate using bolts from the back Wall mounting on a bracket for example on a solid wall Pipe mounting using a bracket on a horizontal or vertical pipe nominal pipe diameter JIS 50A 202 7 95 Panel thickness Unit mm inch 155 6 1 ENT 1to 10 Panel mounting N 0 04 to 0 39 bracket TL 80 16 EY Hood Option Option code HO 3 a 115 4 5 Mise s 1 65 PANEL CUTOUT screw fo my T 68 2 7 9 173 138 0 35 Sensor cable inlet 6 81 5 43 gland Pg13 5 cA M6 screw 32 1 26 depth 4211 Transmission signal cable inlet 4 76 5 Cable gland Pg13 5 1 Fig 3 2 Panel mounting diagram M 49 Approx 1 93 55 Adapter 2 2 i G1 2 screw AFTG 1 2 NPT screw ANSI 2 Fig 3 1 Housing dimensions and layout of glands IM 12B07D02 01E 3 2 Installation and wiring min 203 Unit mm inch min 8 0 1549 30 1 18 ge ts B x NIS D cle 2 04 1 3 5 2s 0 16 0 14 SPACING PANEL CUTOUT PANEL CUTOUT Fig 3 2b Panel mounting using two 2 self tapping screws Unit mm inch Pipe mounting Pipe mounting Vertical Horizontal ae 200 7 87
136. nfiguration 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 EXA can be adjusted for any one of eight different types of temperature sensors To record such configuration adjustments write changes in the space provided in Chapter 10 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 man ual in conjunction with the corresponding sensor user s manual IM 12B07D02 01E 1 4 Introduction IM 12B07D02 01E 2 202 SPECIFICATIONS 2 1 General A Input specifications Dual high impedance inputs 2 x 10120 with provision for liquid earth connection Suitable for inputs from glass or enamel pH amp refer ence sensors and ORP metal electrodes B Input ranges pH 2 to 16 pH ORP 1500 to 1500 mV rH 0 to 55 rH Temperature 30 C to 140 20 to 300 F 8 55 NTC sensor 10 C to 120 C 10 to 250 F 10kO PTC 20 C to 140 C 0 to 300 F C Output ranges pH min 1 max 20 pH ORP min 100 max 3000 mV rH min 2 max 55 rH Temperature min 25 max 200
137. ns capability to meet the most advanced requirements The meas urement 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 dos ing neutralization system Yokogawa designed the EXA analyzer to withstand harsh environments The converter may be installed either indoors or outside because the IP65 NEMA 4X housing and cabling glands ensure the unit is adequately protected The flexible polycarbonate window on the front door of the EXA allows pushbut ton access to the keypad thus preserving the water and dust protection of the unit even during routine maintenance operations A variety of EXA hardware is optionally available to allow wall pipe or panel mounting Selecting a prop er installation site will permit ease of operation Sensors should normally be mounted close to the con verter 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 junction box Except installations with dual high impedance sensors where the maximum cable length is 20 metres using integral cable only no 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 10 While this initial co
138. nts Electrical data of the PH202S F amp PH202S P Supply circuit Maximum input voltage Vmax 24 V Maximum input current Imax 250 mA Maximum input power Pi 1 2 W Effective internal capacitance Ci 220 pF Effective internal inductance Li 0 pH Sensor input circuit Maximum output voltage Vt 14 4 V Maximum output current It 32 3 mA Maximum allowed external capacitance Ca 600 nF Maximum allowed external inductance La 34 mH Any FM Approved barrier may be used that meets the following requirements Voc or Vt lt 24 V loc or It lt 250 mA lt 1 2 W gt 220 pF Ccable La gt 0 UH Lcable 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 Associated apparatus connected to the barrier must not use or generate more than 250 Vrms or Vdc Resistance between Intrinsically Safe Ground and earth ground must be less than 1 0 Ohm In case of using cable glands in Outdoor location they shall be UV rated or made of metal IM 12B07D02 01E Specification 2 15 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 manufa
139. nts may impair Intrinsic Safety To prevent ignition of flammable or combustible atmospheres disconnect power before servicing or read understand and adhere to the manufacturer slive maintenance procedures Application Doc No IKE024 A10 P 4 1 to P 4 2 IM 12B07D02 01E 2 10 Specification 2 7 Control Drawing of PH202S mA HART Specification FM Non incendive design Nonincendive design FM Class Div 2 Group ABCD T4 for ambient temp lt 55 C FM Approved power supply PH202S transmitter Voc 31 5 VDC ES Lo 0 Sensor s F al data or electric terminals 11 17 see text below Max cablelength 60 mtr Cable dia 3 12 mm Functional eart Load Resistance Classified Location U nclassified Location Nonincendive design FM Class I Div 2 Group ABCD T4 forambient temp lt 55 2028 transmitter EM Approved power supply Voc amp 31 5 VDC r o to o o o Sensor s terminals 11 17 Max cablelength 60 mtr Cable dia 3 12 mm or electric see text below a Functional earth 1 Classified Location Unclassified Location Electrical data of the PH202S Supply circuit terminals and Maximum input voltage Vmax 31 5 V Maximum input power Pmax 1 2 W Effective internal cap
140. ode To disable Auto Return set the service code 50 to Off 0 you disable Auto Return function then the transmitter does not automatically return to Measurement Mode You need to press MODE key to return to Measurement mode 11 6 5 CALEND After CAL END appears once during calibration it blinks and calibration starts again For the PH202 even after CAL END is displayed a measurement stability check continues for the time interval set by service code 20 If the reading changes significantly during this interval then recalibration will start automatically In auto calibration mode AUT CAL immediately after CAL END is displayed you can press YES or NO within time interval set by service code 20 to confirm or reject repeat the reading This applies to both calibration points 1 If the reading does not stabilize and CAL END appear within 10 minutes of start of calibration then error E1 measurement unstable during calibration is generated 2 If you press YES or NO then you can continue immediately to the next step 3 If you don t press YES or NO and the pH is stable within pH for time interval t then calibration continues to the next step 11 6 6 How to cancel sample calibration In case of stopping calibration at data aquisition situation Indication on LCD Key Operation waiting for measured value input with blinking SAMPLE after sample calibration start cancel the calibration in
141. om the last 3 cm of the brown and the white coaxial cores cotton threads Fig 3 12b 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 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 12c 8 Finally shrink the overall heat shrink tube into position IM 12B07D02 01E Operation 4 1 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 inter face LEVEL 1 Maintenance These functions are accessible by pushbutton through a flexible 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
142. onsulted Damage caused by wear and tear inadequate maintenance corrosion or by the effects of chemical processes are excluded from this war ranty 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 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 disin fected before shipment Goods should carry a certificate to this effect for the health and safety of our employees Material safety data sheets should also be included for all components of the processes to which the equipment has been exposed Documentation This procedure is only applicable to the countries in European Union All instruction manuals for ATEX Ex related prod ucts
143. otal of capacitance and inductances connected to the terminals of the EXA 2025 do not exceed the limits given 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 0 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 12B07D02 01E Installation and wiring 3 5 3 3 3 Installation in Hazardous Area Non Incendive 2025 be installed a Category 3 Zone 2 Div 2 area without the use of safety barri ers Maximum permissible supply voltage 31 5V 3 3 4 Liquid earth In all circumstances the sensor side of the measuring loop must be grounded to the measuring liquid EXA PH202S uses advanced differential high impedance input circuits This technique calls for a grounding to the liquid In addition to that the sensor checking circuits also use the liquid earth for meas urement of impedance of the sensors All Yokogawa fittings have provisions for this connection It is usu ally called liquid earth in all our manuals A separate connection should be made to the terminal numbered 14 in all cases to get a proper and st
144. parate temperature sensor rather than an all in one sensor use the circular packing with four holes Plug the unused hole in the packing with the black plug When using this packing you have to be careful to ensure that it is well enough sealed to be waterproof Requirement of connecting with external instruments Terminal for pin cable terminal Screw terminal option TB Crimp contact Pin shaped crimp contact Ring shaped or fork shaped for cable with sleeve insulator crimp contact Usable contact max 2 5 mm Crimp contact shown as the figures under this table which meets M3 screw Torque for fixing 0 5 N m or less 1 35 N m recommended Example of Weidmuller Co Ltd made JST Mfg Co Ltd made crimp contact 0 34 10 0 5 12 H1 12 1 5 125 VD1 25 3 Ring shape VD1 25 S3A Fork shape Note Other crimp contact may be required depending on core cable diameter T3 2E eps NN Pin shaped terminal Ring shaped terminal Fork shaped terminal 2 5mm or less 8 3mm or less 8 3mm or less F37EPS IM 12B0702 01E 11 5 When the option of the screw TB is specified the 2 block layout is as follows 12 17 LOW IMP NC HIGH IMP Note Nothing is connected to NC F3 8E eps When a pH sensor is used connect both terminals LOW and IMP on the upper row with a shorting bar and nothing to both terminals HIGH and IMP on the lower row Whe
145. pears in the display and the YES NO key prompt flags flash Press YES NEW SNS Display flashes YES NO answer YES if new sensor fitted or NO if not Care YES resets logbook calibration data Insert the sensors in pH 7 buffer solution Press YES to start calibration YOKOGAWA 4 Note start calibration with another solution press to cycle through the other options YES CAL7 NO CAL4 CAL9 NO CAL 7 The instruments waits for the reading to stabilize The pH display flashes When reading Is stable the CAL END message appears rol L HL Press YES for single point As Pot adjustment Press NO to proceed to calibrate Slope l YES After briefly displaying WAIT the display returns to the normal readout NO Transfer to second buffer 4 and press YES NO The display now flashes the pH value The instrument waits for the reading to stabilize When the reading is stable the CAL END message appears Press YES After briefly displaying WAIT the display returns to the normal readout IM 12B07D02 01E Calibration 6 3 6 5 2 Automatic calibration with HOLD active 12B6C3 31 Press the MODE key AUT CAL appears in the display and the YES NO key prompt flags flash Press Y
146. pply Voltage o 0 Q O 0 0 Uo 31 5 Volt DC o G Io 100 mA 0 SENSOR S terminals 11 17 Fun tional Functional earth earth Load Resistance 4 Ianue area p Safe area Intrinsically safe design standard EX ia IIC T4 for ambient temp lt 55 C EX ia or ib Certified Repeater T6 for ambient temp lt 40 C Power Supply Certificate nr IECEx KEM 06 0052X HART Compatible 2025 pH ORP transmitter 0 Output ro O O to On Uo 31 5 Volt DC 100 mA O Supply o Po 1 2 Watt o SENSOR S terminals 11 17 unctional earth lt q Hazardous area 5 4 Safe area Zone 0 or 1 Sensor s are of a passive type to be regarded as simple apparatus Electrical data of the PH2028 Supply and output circuit terminals and Maximum input voltage Ui 31 5 V Maximum input current I 100 mA Maximum input power Pi 1 2 W Effective internal capacitance Ci 22 nF Effective 1nternal inductance Li 35 uH Sensor input circuit terminals 11 through 17 Maximum output voltage Uo 14 4 V Maximum output current Io 32 3 mA Maximum allowed external capacitance Co 600 nF for PH202S E C U 3 5 uF for PH202S N Maximum allowed external inductance Lo 34 mH for PH202S E C U Lo 76 mH for 2025 Barriers and power supply specification must not exceed the maximum values as shown in the dia
147. provals entity approved and meet connection requirements Electrical data of the PH202S B amp PH202S D Supply circuit Vmax 32 V Pi 5 32 W 220 pF Li 0 Sensor input circuit Vt 14 4 V It 32 3 mA 2 29 uF La 64 96 mH 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 Non incendive field wiring may be installed in accordance with Article 501 4 B 3 Grounding shall be in accordance with Article 250 of the National Electrical code In case of using cable glands in Outdoor location they shall be UV rated or made of metal WARNING Substitution of components may impair suitability for Division 2 Do not remove or replace while circuit is live unless area is know to be non hazardous Explosion Hazard Do not disconnect equipment unless area is know to be non hazardous Do notreset circuit breaker unless power has been removed from the equipment or the area is know to be non hazardous Application Doc No IKE025 A10 P 9 IM 12B07D02 01E 2 20 Specification 2 15 Control Drawing of PH202S FF PB Specification CSA CSA Ex ia Class DIV 1 Group ABCD T4 for ambient temp lt 55 C Ui 24V or Ui 17 5V li 250 mA li 380 mA Pi 1 2W Pi 5 32 W PH202S F or PH202S P Sensor Connections Safe area O 1 1 5 1 5 i Apparatus
148. r activates the SAMPLE calibration routine at the same time as taking a representative process sample After determining the pH of this sample by independent methods in the lab for exam ple the reading can be adjusted While the sample is being analyzed EXA holds the sample data in memory while continuing to control and read pH normally 6 4 Data entry In special circumstances users can directly enter the calibration data in the service code menu see chapter 5 This is appropriate where the manufacturer provides calibration data for each probe as with the Pfaudler sensors or where electrodes are laboratory calibrated for subsequent installation on the plant Service Code 23 allows the values of ITP asymmetry potential or zero point and slope to be entered NOTE sure to use fresh pure standard solution to ensure that the calibration is accurate If the temperature of the standard solution changes then its pH will also change Ensure that the temperature of the standard solution is stable at calibration time using a pH sensor which isn t incorporated with a temperature element for automatic temperature compensation the temperature of measured solution should be set on the PH202 transmitter When an antimony sensor is applied measured temperature value also should be set IM 12B07D02 01E 6 2 Calibration 6 5 Calibration procedures 6 5 1 Automatic calibration Press the MODE key AUT CAL ap
149. reference elements in the same body Green for temperature sensors The recommended procedure is to color code each end of the cables to match the sensors with the color strips provided with each cable This provides a quick way to identify the ends of the cables belonging to a particular sensor when they are installed The procedure for fixing the identification labels is described in detail in the instruction sheet provided with the cable IM 12 07002 01 Installation and wiring 3 9 3 6 1 Connection cable There are two types of connection cable one for single sensors and one for combined sensors The former is a coaxial cable and has only two connections Red to measuring element Blue to screen shield The latter is a triaxial cable with three connections it has an extra white wire termination these wires are connected Red to measuring element Blue to reference White to screen shield To connect the other sensor systems follow the general pattern of the terminal connections as listed below 11 amp 12 Temperature compensation resistor input 13 Input no 2 normally the reference element 17 Screen shield for input no 2 14 Liquid earth solution ground connection 15 Input no 1 normally the measuring element 16 Screen shield for input no 1 pH transmitter Green Red 11 Temperature 11 Temperature 12 Temperature Yellow Red 12 Temperature __ 13 Reference 7 f 14 Solut
150. required and the sensor input circuit is non incendive having the parameters Maximum output voltage Uo 14 4 V Maximum output current lo 32 3 mA Maximum allowed external capacitance Co 3 5 uF Maximum allowed external inductance Lo 76 mH IM 12B07D02 01E 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 50 meters 162 feet Select an installation site where Mechanical vibrations and shocks are negligible No relay power switches are in the direct environment Access is possible to the cable glands see figure 3 1 The transmitter is not mounted in direct sunlight or severe weather conditions When the instrument with Suffix Code B N D is used take measures so that the display window is not exposed to direct sunlight Maintenance procedures are possible avoiding corrosive environments The ambient temperature and humidity of the installation environment must be within the limits of the instrument 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 Panel mounting using optinal bracket refer to Fig 3 2a Pa
151. rom anywhere in the configuration menus when no button is pressed during the set time interval of 10 minutes The manual impedance check on demand can be setup for operation in the maintenance mode Through the closed front cover 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 outputs when enabled in code 32 Soft fail gives a flashing FAIL flag in the display The call for maintenance is a good example of where a SOFT fail is useful A warning that the regular maintenance is due should not be used to shut down the whole measurement Not used Call for maintenance is a trigger to signal that the system has been in service for longer than the set time without calibration The user can set up to 250 days as a routine service interval The display resolution can be set to either 0 01pH or 0 1pH Not applicable to the ORP mV display IM12B07D02 01E 5 20 Parameter setting Code Display Function Function detail X Y 2 Default values User interface 50 RET Auto return Auto return to measuring mode Off 0 Auto return to measuring mode On 1 1 On 51 MODE Mode setup Manual impedance check Off 0 0 Off Manual impedance check On 1 52 PASS Passcode Maintenance passcode Off 0 0 0 0 Off
152. s ensures that the desired control point will be measured accurately even if there may be small deviations when there is a big deviation from the setpoint This of course has no effect on the accuracy of a control loop The special construc tion of the Pfaudler sensor ensures that there is practically no drift in the calibration All that is necessary is to keep the sensor membranes clean This is best done by cleaning with low pressure steam which restores the original condition of the sensor including the original calibration values IM 12B07D02 01E 10 7 10 6 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 Terminal HHT For detailed operating instructions refer to the HHT user s manual and the on line help structure For menu structure of HHT 375 see next page Level 1 menu Level 2 menu Level 3 menu Level 4 menu Level 5 menu Process variab Process value Second process value Temperature 0 Slope Aspot2 Imp1 Imp2 Diag Service Status Hold Hold on off Hold type Hold value Temp Man Manual temp value Manual temp on off Logbook1 Logbook2 Basic setup Tag Unit Device info Date
153. s signalled AS HI ZP LOW amp ZP HI SL LOW amp SL HI Code 23 SLOPE Code 24 25 amp 26 Code 27 amp BUF ID ZERO P when a calibration is done These default values should be adjusted to suit the application this will be especially important with enamel or Antimony probes In case in service code 27 the Asymmetry Potential is disabled and the Zero Point is used service code 21 is used for entering the limits of the Zero Point Limit values for zero point if enabled in service code 27 Limit values for acceptable slope sensitivity calibrations Values can be entered directly in this section These data can be provided by the manufacturer of the probe or by the users laboratory etc They are determined independently of the measuring loop Note it is not necessary to enter this data in most cases as the EXA automatically does this while performing a calibration The feature is used in the case of special electrode systems and where calibration in the process environment is not possible The following buffer calibration tables are programmed into the EXA They are the primary buffer standards according to NIST formerly NBS and various other national standards We strongly recommend the use of these buffer solutions as they give the best buffer capacity reliability and accuracy when calibrating Table 5 1 These tables may be adjusted in the case tha
154. sation and measuring functions 5 13 5 3 3 Calibration TUMCt ONS 5 15 5 3 4 MA output 5 17 5 3 5 User Interface oci d arto 5 19 5 3 6 Communication 5 21 5 3 7 General e 5 21 5 3 8 Test and set p arae 5 21 6 Calibration 6 1 6 1 Automatic calibration 6 1 6 2 Man al calbration E 6 1 6 3 6 1 mom 6 1 6 5 Calibration c 6 2 0 5 1 Automatic calibration ctr tnt t o 6 2 6 5 2 Automatic calibration with HOLD active ssssssssssesseneens 6 3 6 5 3 Manual calibration 2nd parameter 6 4 6 5 4 Sample calibration 6 6 7 m 7 1 7 1 Periodic maintenance for the EXA transmitter 7 1 7 2 Periodic maintenance for the sensor 4 1 7 1 7 3 Calibration procedures are described in step by step detail in chapter 6 However follow these 6
155. sensor maybe E 13 Reference connected to 11 amp 12 for 7 14 Solution ground QRP temperature indication 15 pH I 2 See section 5 3 1 for 16 Shield impedance checking of glass 17 4 reference sensors ORP rH wiring Note or rH setting in service code 02 Figure 3 10b Sensor wiring 3 6 2 Sensor cable connection with special grommet In order to seal multiple sensor cables into EXA a special grommet is provided that is designed to accommodate one two or three sensor cables 5 mm dia plus a liquid earth cable 2 5 mm dia In the pack with the grommet are blanking pieces to close any unused holes When correctly assembled the grommet maintains the IP65 NEMA 4X rating of the EXA PH202 housing Refer to figure 3 5 to assemble the grommet connections First remove the nut and standard rubber seal from the selected gland Discard the seal This will be replaced later by the special grommet Thread the cables through the nut and the gland Connect the cables to their designated terminals Arrange the cables to avoid tangles and insert the grommet between the gland and the nut The grommet is split to permit the cables to be mounted after connection This also ensures even length adjustment Ensure that any unused holes are filled with the blanking pieces Tighten the nut to form a firm seal Hand tight is sufficient ON OURWN gt NOT
156. slope and asymmetry are made This eliminates the question of how long the operator should allow prior to adjust ment A menu driven prompt system conducts the operator through the simple foolproof routine Default settings for the buffer solutions are the standard NIST formerly NBS recognised solutions 4 7 and 9 These are known as primary buffers They have a much better buffer capacity than the commercial or adjusted buffers Yokogawa strongly recommends the use of these buffers to provide the best pH calibration 6 2 Manual calibration In this method the operator decides on the actual value to enter Manual calibration is most often used for single point adjustment of the asymmetry potential by comparison method Manual calibration can also be used to perform a full 2 point calibration with solutions other than the NIST buffers that are listed in the calibration tables In this case the solutions are applied sequentially as in the AUT CAL method but the user determines the adjustment of reading and stability NOTE During manual calibration the temperature coefficient is still active This means that the readings are referred to 25 C This makes grab sample calibration easy and accurate However if the manual calibration technique is used for buffer calibration the temperature coefficient must be set to zero in maintenance mode in the TEMP routine see chapter 5 6 3 Sample calibration The operato
157. t terminals 11 through 17 Maximum output voltage Voc 14 4 Maximum output current Isc 32 3 mA Maximum allowed external capacitance Ca 600 nF Maximum allowed external inductance La 34 mH Barriers and power supply should be CSA certified The specifications must not exceed the maximum values as shown in the diagram above Installation should be in accordance with Canadian Electrical Code Part I Maximum safe area voltage should not exceed 250 VRMS For Class I Div 2 Group ABCD the CSA certified barrier is not required and the Sensor input circuit terminals 11 through 17 is non incendive having the parameters Maximum output voltage Voc 14 4 V Maximum output current Isc 32 3 mA Maximum allowed external capacitance Ca 3 5 uF Maximum allowed external inductance La 76 mH 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 100 mA IM 12B07D02 01E 2 12 Specification 2 9 Control Drawing of PH202S FF PB Specification IECEx Ex ia T4 for ambient temp lt 55 C Ui 24V or Ui 17 5V 250 mA liz 380 mA Pi 1 2W 5 32 2025 2025 Connections Safe area O 1 5 p deo POS Apparatus interface certified i certi
158. t maintained in preset time period Perform maintenance Reset interval Output span too small lt 1pH Incorrect configuration by user Reprogram Table values make no sense Programmed values outside acceptable limits Incorrect configuration by user Reprogram Programmed data lost Fault in electronics Very severe interference Reprogram Checksum error Software problem Contact Yokogawa Zeropoint outside limits Sensors are aged or poluted Mistake in calibration Note 1 see section 11 6 2 Note 2 see section 11 6 3 Check buffer solution Recalibration at pH7 Replace sensor T11 1E eps IM 12B07D02 01E 11 14 Appendix 11 6 2 On line impedance checks This check can be applied to a sensor with liquid earth electrode In using a sensor having no liquid earth electrode set impedance check off on service code 3 and 4 Display Function Function detail Ddefault values Parameter specific functions 03 71 Impedance check 1 Low impedance limit x None K MorG High impedance limit x None K M or G Low High Temp comp off Temp comp on Imp check off Imp check on Press NO to step through choice of units press YES to select units then use the gt keys to set the value Press NO to step through choice of units press YES to select units then use the gt NENT keys to set the value 72 Impedance check 2 Low
159. t temp lt 55 C T6 for ambient temp lt 40 C safety barrier or power supply HART compatible 202 pH ORP transmitt 24 volts DC Nominal Supply Voltage ro ro T o Sensor s o G Suitable values are terminals 11 17 Vmax 31 5 VoltDC o Imax 100 mA LI For electrical data see text below Functional Functional earth earth Resistance Hazardous area p 4 Safe area Intrinsically safe design CSA Ex ia Class I Div 1 Group ABCD CSA certified T4 for ambient temp lt 55 C Power Supply T6 for ambient temp lt 40 C HART compatible 2028 pH ORP transmitter Output _o o Sensor s Suitabl 1 Lo litable values are terminals 11 17 im niis max 31 5 VoltDC Lo Imax 100 mA O Supply Pmax 1 2 Watt O For electrical data see text below Functional earth 4 Hazardous area P Safe area Sensor s are thermocouples RTD s passive resistive switch devices or are CSA entity approved and meet connection requirements Electrical data of the 2025 Supply and output circuit terminals and Maximum input voltage Vmax 31 5 V Maximum input current Imax Maximum input power Pmax 1 2 W Effective internal capacitance Ci 22 nF Effective internal inductance Li 35 uH Sensor input circui
160. t the user wishes to use other calibration solutions The of the buffer can be changed at the BUF ID prompt The other values can then be adjusted in sequence As an alternative to Asymmetry Potential the Zero point can be used to define and calibrate the EXA pH unit Note that this method conforms to the DIN standard for instruments No IEC 60746 2 IM12B07D02 01E 5 16 Parameter setting Code Display Function Function detail Default values Calibration functions 20 ALSEC Stability check time 5 sec APH Stability check pH 0 02 pH 21 AS LOW As Pot low limit 120 mV As Pot AS HI As Pot high limit 120 mV 21 ZP LOW Zero Point low limit 5 00 pH Zero ZP HI Zero Point high limit 9 00 pH 22 SL LOW Slope low limit 70 96 SL HI Slope high limit 110 96 23 ITP Set ITP Preset calibration data from manufacturer 7 00 pH pH SLOPE Set slope or from laboratory determinations 100 ASP 1D Set As Pot For the main parameter 0 0 mV A Press YES to confirm 0 1 mV resolution Select YES NO then set value with gt ENT keys Y Press NO to change to ASP ASP Set As Pot For the main parameter Press YES to confirm 1 mV resolution then set value with gt ENT keys ASPmV Set As Pot ORP For parameter 2 when activated in service code 02 23 ASP 1D Set As Pot ORP For the main parameter ORP fi Press YES to confirm 0 1 mV resolution S
161. tandard buffers be used to calibrate solutions The temperature responses of these are pre programmed into Service codes 24 25 and 26 in the EXA PH202 Where other buffers are used with the semi automatic calibration function their temperature response should be programmed into the relevant code IM 12B07D02 01E 10 5 10 4 Set up for other functions Current outputs Transmission signals for the measured parameters and FAIL signals can be set up in service codes 31 32 and 35 Diagnostic Checks Impedance checks response time and stability checks are all included in the PH202 In order to get the best performance from each of these features the transmitter should be fine tuned according to experi ence in the installation and for the particular sensors selected Service codes 3 4 5 amp 20 all contribute to the diagnostics Please note that the default settings provide an excellent starting point and provide most valuable information about the performance of the electrode system Communications The proprietary HART FSK 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 62 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
162. tati cel mai apropiat birou sau reprezentant Yokogawa manwali kollha 1 istruzzjonijiet ghal prodotti niarbuta ma ATEX huma disponibbli bl Ingli bil ermani u bil Fran i Jekk tkun te tie struzzjonijiet marbuta ma Ex fil lingwa lokali tieg ek g andek tikkuntattja lill eqreb rappre entan jew uffi ju ta Yokogawa 1 INTRODUCTION AND GENERAL DES CRIPTION Introduction 1 1 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 typi cal 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 shipment If damage is found retain the original packing materials including the outer box and then immediately notify the carrier and the relevant Yokogawa sales office Make sure the model number on the textplate affixed to the side of the instrument agrees with your order Examples of nameplates are shown TRANSM
163. tatsiooni saamiseks p rduge l hima Iokagava Yokogawa kontori v6i esindaja poole IM 12B07D02 01E Wszystkie instrukcje obstugi dla urzadzen w wykonaniu przeciwwybuchowym Ex zgodnych z wymaganiami ATEX dostepne w Jezyku angielskim niemieckim i francuskim Jezeli wymagana jest instrukcja obstugi w Panstwa lokalnym je zyku prosimy kontakt 7 najblizszym biurem Yokogawy Vsi predpisi in navodila za ATEX Ex sorodni pridelki so pri roki v angli amp ini nems ini ter franco amp ini Ee so Ex sorodna navodila potrebna v va em tukejnjem jeziku kontaktirajte va najblisi Yokogawa office ili predstaunika o Az ATEX Ex m szerek g pk nyveit angol n met s francia nyelven adjuk ki Amennyiben helyi nyelven k rik az Ex eszk z k le r sait k rj k keress k fel a legk zelebbi Yokogawa irod t vagy k pviseletet ATEX Yokogawa Toate manualele de instructiuni pentru produsele ATEX Ex sunt in limba engleza germana si franceza In cazul in care doriti instructiunile in limba locala trebuie sa contac
164. than for NIST solutions NOTE NIST formerly NBS buffers are available as consumable items from any Yokogawa sales office under the following part numbers 6C232 4 01 pH at 25 C 6C237 6 87 pH at 25 C A box contains 5 packets of powder Each makes a 200 ml solution 6C236 9 18 pH at 25 C IM 12B07D02 01E Troubleshooting 8 1 8 TROUBLESHOOTING is 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 also checks the electrodes to establish whether they are still functioning within specified limits The transmitter checks the glass electrode impedance for a low value to determine if it is broken or cracked and for a high impedance to check for internal breakage or disconnection The reference system is prone to more faults than the glass electrode in general The unit measures the impedance value and compares it to the programmed value in memory to determine acceptance during testing A high impedance signals pollution or poisoning of the reference electrode diaphragm Also the EXA checks the electrodes during calibration to determine if the reaction time is suitable for pH measurement A specially timed check can be activated following each cleaning cycle
165. tion Display of sensor impedance on message line of display FAIL flag in event of out of limits impedance and the possibility of 21 mA or 3 6 mA or 3 9 mA error signal M Signal processing pH ORP The PH202 can measure pH Using the FU20 allows simultaneous measurement and display of pH and It also allows display and out put of pH EMC Conformity standards 00 EN 61326 1 Class A Table 2 For use in industrial locations EN 61326 2 3 EN 61326 2 5 pending A CAUTION This instrument is a Class A product and it is designed for use in the industrial environment Please use this instrument in the industrial environment only Specification 2 3 O Intrinsically safe Refer to conrol drawings Item Description Code Item Description Code FM Intrinsically safe Approval FM Non incendive safe Approval AUD 422114020 Applicable standard FM3600 FM3611 FM3810 ntrinsically Tor Division 1 Groups Non incendive for Class Division 2 Groups ABCD Factory Class I Zone 0 AEx ia Factory 2005 DT Mutual Temp Class T4 Amb Temp 10 to 55 C Mutual FM Temp Class T4 Amb Temp 10 to 55 Intrinsically Safe Apparatus Parameters Non incendive Safe Apparatus Parameters Vmax 31 5 V Imax 100 mA Vmax 31
166. tion is not well executed or the pH readings are temperature dependent Monthly calibra tions should be sufficient for most applications If a film remains on the pH sensor after cleaning or if the reference junction is partly plugged then measuring errors can be interpreted as a need for recalibration Because these changes are reversible with correct cleaning and or proper selection or adjustment of the electrolyte flow through the junction make sure that these items are correct before recalibrating the system IM 12B07D02 01E 7 2 7 3 Calibration procedures described in step by step detail in chapter 6 However follow these guidelines 1 Before starting a calibration make sure the electrode system is properly cleaned so that electrodes are fully functional They must then be rinsed with clean water to avoid contamination of the calibration solution 2 Always use fresh buffer solutions to avoid the possibility of introducing errors from contaminated or aged solutions Buffers supplied as liquids have a limited shelf life especially alkaline buffers which absorb CO2 from the air 3 Yokogawa strongly recommends NIST primary buffer standards in order to ensure the best accuracy and best buffer capacity is available Commercially adjusted buffers e g 7 00 9 00 or 10 00 pH are a compromise as a standard and are often supplied without the temperature dependency curve Their stability will be much worse
167. trostatic discharge Installation and wiring The EXA analyzer should only be used with equip ment that meets the relevant international and regional standards Yokogawa accepts no respon sibility for the misuse of this unit A CAUTION 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 exces sively wet Do not use an abrasive material or solvent when cleaning the instrument Do not modify the PH202 transmitter WARNING Electrostatic charge may cause an explosion haz ard Avoid any actions that cause the generation of electrostatic charge e g rubbing with a dry cloth Warning label A WARNING AVERTISSEMENT 8 HRObtnibsoc POTENTIAL ELECTROSTATIC CHARGING HAZARD SEE INSTRUCTIONS DANGER POTENTIEL DE CHARGES ELECTROSTATIQUES VOIR INSTRUCTIONS Because the enclosure of the pH ORP transmitter 2025 P F are made of aluminium if it is mounted in an area where the use of category 1 G Zone 0 apparatus is required it must be installed such that even in the event of rare inci dents ignition sources due to impact and friction sparks are excluded Notice Th
168. vice Code 52 to obtain access to the Commissioning Mode Service From the commissioning menu select SERV 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 or less options will be made available by the configuration of some service codes For instance the impedance measurement screens do not appear when impedance checking is switched off in service codes 03 and 04 IM 12B07D02 01E 4 4 Operation 4 5 Display functions 4 5 1 Display functions pH default Display Access See Auto Impedance of input 1 calibration Chapter 6 See Manual calibration Chapter 6 Impedance of input 2 MONI Sample calibration Chapter 6 Software release number YES Process temperature See Manual Impedance MAN check Chapter 5 Current output See Temp Offs
169. y prevent ignition of flammable or combustible atmospheres disconnect power before servicing or read understand and adhere to the manufacturer s live maintenance procedures Application Doc No IKE025 A10 P 6 to P 7 IM 12B07D02 01E 2 18 Specification 2 13 Control Drawing of PH202S FF PB Specification FM Non incendive Entity FM Class I DIV 2 Group ABCD T4 for ambient temp lt 55 C Sensor Connections PH202S B Max cablelength 60 mtr or PH202S D Cable dia 3 12 mm Sensor FM Approved Connection Power Supply Voc lt 32 VDC i FM Approved E FM Approved i i Terminator 01 R 90 1000 ic 0 22uF Terminator 90 1000 i 1 0 2 2 i Division 2 Unclassified Location Classified Location Sensor s are of a passive type to be regarded as simple apparatus devices which neither store nor generate voltages over 1 5 V currents over 0 1 A power over 25 mW or energy over 20 uJ or are FM Approvals entity approved and meet connection requirements e Electrical data of the PH202S B amp PH202S D Supply circuit Vmax 32 V Pi 1 2 W Ci 220 pF Li 0 uH Sensor input circuit Vt 14 4 V It 32 3 mA Ca 2 29uF La 64 96 mH 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
170. y laboratory analysis for example 1 Press the MODE key 2 MAN CAL is displayed 3 Press NO 4 SAMPLE is displayed To abort calibration press NO and S OFF is displayed then press YES to revert to MEAS mode 5 While SAMPLE is displayed and when the measured value stabilizes acquire some sample liquid for laboratory analysis and at the same time press YES S ON is displayed so press YES again to confirm SAMPLE is displayed flashing on thedisplay and the PH202 waits for a value derived by laboratory analysis or the like to be entered 6 To enter the value derived by laboratory analysis or the like while SAMPLE is lashing press the MODE key LAB CAL is displayed To abort calibration press NO and you will be returned to step 4 above 7 Press YES NEW SNS is displayed If you want to change the sensor press YES otherwise press NO ORP CAL is displayed 8 Press YES START is displayed so press YES again 9 0000 mV is displayed so enter a suitable zero offset value and press ENT 10 CAL END is displayed 11 Press YES to exit Calibration with Sample IM 12B0702 01E 11 6 Supplement of troubleshooting 11 6 1 Error Codes Appendix 11 13 The following error message table gives a list of problems that are indicated when the high or low impedance limits are exceeded for a sensor Such things as fouling breakage and cable faults are readily detected The non immersion of the sensors in the process fluid
171. y detected The non immersion of the sensors in the process fluid is also signalled IM 12B07D02 01E Table 8 1 Error Codes Troubleshooting 8 3 Code Error description Possible cause Suggested remedy EO Buffer solution temperature Buffer solution too hot or too cold Adjust buffer temperature outside the programmed range Check cabling E1 Measurement failed to stabilize Sensors fouled Clean sensors during the calibration Sensors too slow aged sensor Replace sensors E2 Asymmetry potential too high Sensors are aged or polluted Check buffer solution Limits set in service code 21 Mistake in calibration Recalibrate at pH7 Replace sensor Slope sensitivity is outside limits Measuring sensor aged Replace measuring sensor Limits set in service code 22 Poor insulation at the connector Replace or dry cables E4 1 Impedance of input 1 too low Measuring sensor broken Replace measuring sensor Limits set in service code 03 Damaged or damp connections Replace or dry cable E4 2 Impedance of input 2 too low Reference sensor broken Replace reference sensor Limits set in service code 04 Damaged connections Replace cables E5 1 Impedance of input 1 too high Measuring sensor disconnected Check connections Limits set in service code 03 Sensors not immersed in process Check process Liquid earth disconnected Check connections E5 2 Impedance of input 2

2-wire Type pH/ORP(Redox)

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