YOKOGAWA PH450G User Manual
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YOKOGAWA PH450G User Manual

Ph and orp converter
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User's
Manual
Model PH450G [Style: S2]
pH and ORP Converter
IM 12B07C05-01E
4th Edition
Table of Contents
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Summary of Contents for YOKOGAWA PH450G

  • Page 1 User’s Model PH450G [Style: S2] pH and ORP Converter Manual IM 12B07C05-01E 4th Edition...
  • Page 2 Note This page may be referred to when reading pages where subsequent submenu screens are shown in the text. Connection to the relevant submenu screen is indicated by a doted line with an arrow. Note that screens in the text are typical examples and actual screens may differ depending on the set parameters.
  • Page 3 Canadian standards. Yokogawa accepts product may be impaired. no responsibility for the misuse of this unit. Yokogawa is not responsible for damage to the instrument, poor performance of the instrument CAUTION or losses resulting from such, if the problems...
  • Page 4 The following safety symbols are used on Warranty and service the product as well as in this manual. Yokogawa products and parts are guaran- teed free from defects in workmanship and material under normal use and service for a period of (typically) 12 months from the DANGER date of shipment from the manufacturer.

  • Page 5: Table Of Contents

    4-2. Trending graphics ....................19 4-3. Zoom in on details ....................19 4-3-1. Actual mA1 ....................19 4-3-2. Actual mA2 ....................19 4-3-3. Zero ......................19 4-3-4. Slope .......................20 IM 12B07C05-01E 4th Edition: Mar. 2012(YK) All Rights Reserved, Copyright © 2007, Yokogawa Electric Corporation IM 12B07C05-01E...
  • Page 6 4-3-5. Sensor mV....................20 4-3-6. Reference impedance ................20 4-3-7. Last calibrated ..................20 4-3-8. Calibration due ..................20 4-3-9. Projected calibration ................20 4-3-10. Projected replacement ................20 4-3-11. Serial number ..................21 4-3-12. Software revision ...................21 4-3-13. HART Device revision ................21 4-3-14. Logbook ....................21 4-4.
  • Page 7 8. TROUBLESHOOTING ....................45 8-1. General .......................45 8-2. Calibration check ....................45 8-3. Predictive maintenance ..................45 8-4. Error displays and actions ...................45 9. QUALITY INSPECTION .....................46 10. SPARE PARTS ......................50 APPENDICES ........................51 Appendix 1, Buffer tables ....................51 Appendix 2, HART HHT (275/375) menu structure ............52 Appendix 3, Temperature compensation matrix ............56 Appendix 4, Control drawing for FM approval ............57 Customer Maintenance Parts List (for Style: S2)......CMPL 12B07C05-02E...

  • Page 9: Introduction And General Description

    1. INTRODUCTION AND GENERAL DESCRIPTION 1-2. Application The Yokogawa EXAxt PH450G is a converter designed for industrial process monitoring, meas- The EXAxt converter is intended to be used urement and control applications. This instruction for continuous on-line measurement of pH manual contains the information needed to install, and/or Redox in industrial installations.

  • Page 10: General Specifications Of Exaxt Ph450G

    2. GENERAL SPECIFICATIONS OF EXAxt PH450G A) Inputs specs : D ual high impedance input (≥ 10 Ω) (under referance conditions) B) Input ranges : -2 to 16 pH ORP : -1500 to 1500 mV : 0 to 100 rH Temperature - Pt1000 : -30 to 140ºC - Pt100 : -30 to 140ºC...
  • Page 11 : Cast aluminum housing with chemically resistant coating; Polycarbonate cover with Polycarbonate flexible window : Protection IP66 / NEMA 4X / CSA Type 3S Colour : Silver grey PH450G-A(D)-A : IP66 cable glands are supplied with the unit PH450G-A(D)-U : NEMA 4X close up plugs are mounted in the unused cable entry holes and can be replaced by conduit fittings as required...
  • Page 12 : Reset to measurement Automatic safeguard: Auto return to measuring mode when touchscreen is untouched for 10 min Model and Suffix Codes [Style: S2] Model Suffix code Option code Description PH450G ----------------- ----------------- pH / ORP Converter Power ----------------- AC version (100…240 VAC) ----------------- DC version (12…24 VDC)

  • Page 13: Installation And Wiring

    3. INSTALLATION AND WIRING 3-1. Installation and dimensions 3-1-1. Installation site 3-1-2. Mounting methods The EXAxt 450 converter is weatherproof and Refer to figures 3-2 and 3-3. Note that the can be installed inside or outside. It should, EXAxt converter has universal mounting capa- however, be installed as close as possible to bilities: the sensor to avoid long cable runs between...
  • Page 14 Unit: mm (inch) min.185 (7.25") (5.43") 138(5.43") (5.43") Figure 3-2. Option /PM: panel mounting diagram (Note) When option code "/UM" is specified, universal pipe/wall/pannel mounting kit are supplied- --same as option code "/U" and "/PM" both specified. wall mounting pipe mounting pipe mounting (vertical) (horizontal)

  • Page 15: Wiring

    WARNING This connector for software must be used only by Yokogawa’s service personnel. connector for (future) software input terminal block potentio- merter output terminal block bracket protective shield bracket 6 X M20 glands Note: PH450G-A(D)-U The enclosure is provided with stoppers in stead of M20 cable glands for the unused holes.

  • Page 16: Cables, Terminals And Glands

    3-2-2. Cables, Terminals, glands and conduit PH450G-A(D)-U adapter The PH450 is supplied with terminals suitable PH450G-A(D)-A for the connection of finished wires in the size The PH450 is supplied with terminals suitable range of 14- 26 AWG. The cable entry holes for the connection of finished wires in the size are sealed with FM certified plugs.

  • Page 17: Wiring The Power Supply

    Adapter for conduit work When protect the cable with a conduit, replace the M20 cable gland with a cable gland of optional conduit adapter, and set the adapter shown as Figure 3-5c. Unit: mm(inch) Packing Approx. 55(2.2") (1.93") G1/2 screw (/AFTG), 1/2 NPT screw (/ANSI) M20 screw (/AM20) Adapter Figure 3-5c.

  • Page 18: Access To Terminal And Cable Entry

    (Chapter 8) before calling Yokogawa. DANGER The minimum cross sectional area of the pro- tective grounding wire should be 0.75 mm...

  • Page 19: Wiring The Contact Signals

    (M4 screw) POWER 100-240 VAC/15 VA/ 50/60Hz FUSE: 500 mA/250 VAC/T (M4 screw) Figure 3-8-a. External grounding Figure 3-8-b. Internal grounding 3-4. Wiring the contact signals “ALARM” Contact “FAIL” Contact 3-4-1. General precautions Power Off The contact output signals consist of volt- Power On age-free relay contacts for switching electrical Alarm...

  • Page 20: Impedance Measurement Jumper Settings

    3-6. Wiring the sensor system 3-6-1. Impedance measurement jumper settings Impedance measurement is a powerful Figure 3-9a. shows the jumper positions related diagnostic tool. In order to perform impedance to the types of measurement stated in Table measurements it is important to have a good 3-1. jumper setting.

  • Page 21: Wiring The Sensor System

    Yokogawa and other manufacturers. The sensor systems from Yokogawa fall into two categories; the ones that use a fixed cable and Coaxial the ones with separate cables. To connect sensors with fixed cables, simply • Red to measuring element...
  • Page 22 pH transmitter Green 11 Temperature 11 Temperature Blue 12 Temperature 12 Temperature Yellow 13 Reference 13 Reference Black 14 Solution ground 14 Solution ground 15 Glass (measure) 15 Glass (measure) Blue 16 Shield 16 Shield Blue 17 Shield Cable markers Separate electrodes for pH FU20 four-in one sensor for pH measurement measurement...
  • Page 23 Green Green 11 TEMPERATURE 11 TEMPERATURE BLUE BLUE 12 TEMPERATURE 12 TEMPERATURE Yellow BLUE 13 REFERENCE 13 REFERENCE BLACK BLACK 14 SOLUTION GROUND 14 SOLUTION GROUND Blue 15 METAL (MEASURE) 15 METAL (MEASURE) BLUE 16 SHIELD 16 SHIELD WHITE BLUE 17 SHIELD 17 SHIELD Cable Markers...

  • Page 24: Sensor Cable Connection With Special Grommet (450G- □ -A Version)

    IP66 and NEMA 4X rating of the EXAxt 450 housing. Note! The special grommet is intended to be used to seal the multiple cables from the Yokogawa flow fittings such as FF20. The designated cables are WU20 sensor cables, which are approximately 5 mm (0.2“) in diameter,...

  • Page 25: Sensor Cable Connections Using Junction Box (Ba10) And Extension Cable (Wf10)

    (e.g. Pfaudler 18), then the and converter, a junction box and extension ca- cable length is restricted to 20 metres (fixed ble may be used. The Yokogawa BA10 junction cable only, no extension with WF10). box and the WF10 extension cable should be used. These items are manufactured to a very...
  • Page 26 Extension cable may be purchased in bulk 4. S trip insulation from the last 3 cm of the quantities or in pre-finished lengths. In the case brown, and the white coaxial cores. of bulk quantities cut to length, then it is neces- sary to terminate the cable as shown below. Extract the coaxial cores from the braid, and trim off the black (low-noise) Termination procedure for WF10 cable.

  • Page 27: Operation Of Exaxt Ph450G

    4. OPERATION OF EXAxt PH450G 4-1. Main display functions 4-3. Zoom in on details This button gives access to the diagnostic T ag:EXAxt PH45 0 Go to trend screen information of the converter. The following messages will appear under normal (default)

  • Page 28: Slope

    of the sensor (default 7.00 pH). The ZERO 4-3-7. Last calibrated value indicates the condition of the sensor. If = the date on which the last sensor calibra- the value exceeds +/- 120 mV (or user defined tion is done. The displayed value of the ZERO limits) an error message is displayed after is the result of this calibration. The displayed calibration and the calibration is rejected. The value of Slope is not necessarily calibrated trend of ZERO drift during the lifetime of the on this date: only if the last calibration was a...

  • Page 29: Serial Number

    Predictive maintenance. If the sensor diag- 4-6. Secondary-primary value display switch 25.0 nostics of the EXAxt are enabled, the diagnos- Pressing on this text block automatically tics are saved into this logbook. switches the secondary value to the main display (Large font size). For the EXAxt PH450G, the reference imped- ance (measured between the Liquid earth and IM 12B07C05-01E...

  • Page 30: Navigation Of The Menu Structure

    4-8. Setup Concentration mode 4-7. Navigation of the menu structure Main display The concentration mode allows the user to generate an analog output signal that is linear to concentration units and to read the concentra- tion on the LCD in the units %, mg/l or ppt. Primary setup display Instrument in HOLD Example: PH450 is used as ORP analyser and the output is linear to mg/l Free Chlorine.
  • Page 31 IM 12B07C05-01E...

  • Page 32: Menu Structure Commissioning

    5. MENU STRUCTURE COMMISSIONING 5-1. Sensor setup 5-4. Temperature compensation Sensor type: T he sensor connection to the ter- Two types of methods can be used here. minals is determining the setting Automatic when a temperature element is of this parameter. Three selec- used. Select one of the Temp. elements used. tions can be made here. The other is a manual set temperature, which pH: O nly pH needs to be measured.
  • Page 33 Note! ‘Sensor type’ and ‘Measurement’ determine the rest of the HMI menu structure. Menu Parameter Default Range values min. max. Manual Manual Temp. 25ºC, 77ºF -30ºC, -22ºF 139ºC, 284ºF Temp. comp. Reference Temp. 25ºC, 77ºF 0ºC, 32ºF 100ºC, 211ºF Temp. Coef T.C. pH 0.0 pH/ºC, 0.0 pH/ºF -0.1 pH/ºC, -0.06 pH/ºF 0.1 pH/ºC, 0.06 pH/ºF Temp. Coef T.C. ORP 0.0 mV/ºC, 0.0 mV/ºF -10 mV/ºC, -6 mV/ºF 10 mV/ºC, 6 mV/ºF Matrix Temp. Ranges – -30ºC, -22ºF 139ºC, 284ºF Matrix pH Ranges – -1.99 pH 16 pH IM 12B07C05-01E...

  • Page 34: Calibration Settings

    5-5. Calibration settings Stabilization time Calibration settings for a pH converter involve During calibration, the value should be stable slope (sensitivity), zero (aspot) and ITP (iso within 0.01 pH over this stabilization time pe- thermal point). The following figure shows riod.
  • Page 35 Menu Parameter Default Range values min. max. Limits and timing Zero high 120 mV 0 mV 532.4 mV (relative to I.T.P.) 2.03 pH 0 pH 9 pH Limits and timing. Zero low -120 mV -532.4 mV 0 mV (relative to I.T.P.) -2.03 pH 9 pH 0 pH Limits and timing Slope high 110% 100% 110% Limits and timing Slope low 70%...

  • Page 36: Ma Output Setup

    5-7. mA output setup Proportional control will reduce but not The general procedure is to first define the eliminate the steady state error. Therefore, function (control, output, simulate, off) of the proportional Control action includes a Manual output and second the process parameter as- Reset.
  • Page 37 mA2 similar structure to mA1 Menu Parameter Default Range values min. max. mA1 (control) Expire time 0.0 sec. 0 sec. 1800 sec. mA1 (output) Damping time 0.0 sec. 0 sec. 3600 sec. mA1 (simulate) Simulation perc. 50 % 0 % 100 % P(ID)-control mA1 Setpoint 7 pH -inf +inf P(ID)-control mA2...

  • Page 38: Contact Output Setup

    Expire time applies. For ca l ibra t ion, it is up to the user if If the output is over 100% for longer than the HOLD is enabled or not. expire time, the output will return to 0%. Damping time The response to a step input change reaches Setpoint approximately 90 percent of its final value Hys. within the damping time. range 100% Direct manual reset Delay time Delay time process t (sec)
  • Page 39 S2, S3, S4 Similar structure to S1 Menu Parameter Default Range values min. max. PID-control S1 Setpoint 7pH -inf +inf PID-control S1 Range 1.00 pH 0.001 pH +inf P(ID)-control S1 Manual Reset 100% PI(D)-control S1 I-time 3600 sec. 1 sec. 3600 sec. P(I)D-control S1 D-time 0 sec. 0 sec. 60 sec. Duty cycle DC period time 10 sec.

  • Page 40: Fail

    5-9. Fail 5-10. Simulate A fail contact is energized when a fail situation The contact can be switched on/off or a occurs. Fail situations are configured in section percentage of output can be simulated. On/Off 5-10. For SOFT Fails the contact and the dis- enables the user to manually switch a contact play on LCD are pulsating. For HARD Fails the on or off. The percentage is an analogue value contact and the display on LCD are energized and represents the on time per period.
  • Page 41 Enabled Disabled (see chapter 6) Disabled+Imp2 high for wash setup Enabled+Imp2 high S2, S3, S4 Similar structure to S1 Menu Parameter Default Range values min. max. Generic wash settings Interval time 6 hour 0.1 hour 36 hour Generic wash settings Wash time 0.5 min. 0.1 min. 10 min.

  • Page 42: Error Configuration

    ”Warn if Logbook full” when you would like to be warned when the logbook is almost full. The content of the logbook(s) can also be retrieved from the converter using the “EXAxt Configura- tor” software package which can be download- ed from the Yokogawa Europe website. IM 12B07C05-01E...
  • Page 43 IM 12B07C05-01E...

  • Page 44: Advanced Setup

    5-13. Advanced setup FACTORY ADJUSTMENT Defaults This menu is for service engineers only. The functionality of the EXAxt allows to save This section is protected by a password. and load defaults to come to a known instru- ment setting. The EXAxt has both factory and Attempting to change data in the factory adjust- user defined defaults.
  • Page 45 Menu Parameter Default Range values High Hart Network address IM 12B07C05-01E...

  • Page 46: Display Setup

    5-14. Display setup Main display The main display consists of three lines with Process Values. Each line is user definable with the restriction that each line should have a different Process Value. The default settings can be defined here. By pressing one of the two smaller process values, this will become the main process value in the main screen.
  • Page 47 Menu Parameter Default Range values High Y-axis pH low 0 pH -inf +inf Y-axis pH high 14 pH -inf +inf Y-axis ORP low -1500 mV -inf +inf Y-axis ORP high 1500 mV -inf +inf Y-axis rH low -inf -inf +inf Y-axis rH high +inf -inf +inf Y-axis...

  • Page 48: Calibration

    6-1. Calibration check with buffer solutions. 6-3. Automatic calibration mode The following tips will help to produce a good The PH450G will provide prompts to aid the calibration. user to make a good calibration. High quality buffer solutions must be used for best results.

  • Page 49: Sample Calibration Mode

    6-7. Operation of hold function during cali- utes in the buffer solution before proceeding, bration even when the measurement is stable. This will EXAxt PH450G has a HOLD function that will give reliable and accurate calibration results. suspend the operation of the control/alarm relays and mA-outputs. 6-4. Sample calibration mode...
  • Page 50 Termination of a wash cycle The user can decide to terminate the current The “interval time” and “wash time” are reversed! wash cycle. This is done in the main screen (all other screens are deactivated) by pressing the wash flag (once or twice). The wash cycle has The wash cycle is terminated the same way two time intervals (T and T...

  • Page 51: Maintenance

    The cell has an expected work- rinse thoroughly in distilled water to ensure that ing life of 10 years. Should this cell need to there is no residue of the cleaning medium to be replaced, contact your nearest Yokogawa contaminate your calibration solution. service center. Note! Some applications will poison simple...

  • Page 52: Lcd Adjustment

    Pressurized systems need to done only by Yokogawa’s service personnel. be regularly checked to ensure that the pres- The position is shown on the picture below. sure is adequate.

  • Page 53: Troubleshooting

    What follows is a brief outline of the EXAxt troubleshooting procedures including possible causes and remedies. 8-2. Calibration check The EXAxt PH450G converter incorporates a diagnostic check of the adjusted slope or zero value during calibration. If the adjusted value stays within the configured limits, it is accepted, otherwise, the unit generates an error mes- sage, and the calibration is rejected.

  • Page 54: Quality Inspection

    Quality PH450G Inspection pH and ORP Converter Standards Scope This inspection standard applies to the PH450G pH and ORP Converter. Inspection Items 2.1 Insulation resistance test *2.2 Dielectric strength test *2.3 Sensor signal input test 2.4 Temperature indication check 2.5 Current output test Note: Items marked with an asterisk (*) may only be confirmed by a test certificate.
  • Page 55 This test is done on the “HIF” display of “Factory Mode”. a. Touch the [Setup] icon. b. Touch the [Commissioning]. c. Touch the [Advanced setup]. d. Touch the [Factory adjustment]. e. Enter a password. Select the [Factory Mode] in “Key.” g.
  • Page 56 Table 4 Data Display Current Output (mA DC) 4 ±0.02 12 ±0.02 20 ±0.02 After all tests are completed, a. Touch the [Exit] twice to return to the “Service” display. b. Select “Normal” in “Key”. c. Touch the [Home] icon to return to the initial display. Figure 1 Testing Circuit and Test Equipment QIS 12B07C05-01E IM 12B07C05-01E...
  • Page 57 IM 12B07C05-01E...

  • Page 58: Spare Parts

    10. SPARE PARTS See Customer Maintenance Parts List. IM 12B07C05-01E...

  • Page 59: Appendices

    The data concerning the pH temperature characteristic will need to be obtained from the supplier of the buffers. Note: Yokogawa recommend the use of NIST (primary buffer standards) rather than buffers which have been adjusted by the addition of acid or alkaline materials to the buffer composition. In this way the customer gets a recognized standard, as well as the best buffer capacity (the ability to resist pH change with contamination).

  • Page 60: Appendix 2, Hart Hht (275/375) Menu Structure

    Appendix 2, HART HHT (275/375) menu structure Online menu Level 1 menu Level 2 menu Level 3 menu Level 4 menu Process values Primary value (pH)* Secondary value (Temp.) Tertiary value (ORP/Hr)* Zoom Zoom sensor Zero* Slope* Sensor mV* ORP Zero* ORP Slope* ORP Sensor mV* RH Zero* RH Slope* RH Sensor mV* impedance 1* impedance 2* Zoom outputs...
  • Page 61 Online menu Level 1 menu Level 2 menu Level 3 menu Level 4 menu Most appl. Error Error description / remedy Calib / Wash pH 1pt Calibration* ORP 1pt Calibration* rH 1pt Calibration* pH Sample Calib.* ORP Sample Calib.* rH Sample Calib.* Temp. Calibration Manual Wash Hold Hold Instrument Hold Outputs Hold Off Commissioning Sensor setup...
  • Page 62 Online menu Level 1 menu Level 2 menu Level 3 menu Level 4 menu Commissioning Meintenance setup Calib. settings Buffer set Sero/Slope/ITP Zero* Slope* ITP* ORP zero* ORP slope* rH zero* rH slope* Impedance settings Input 1 Impedance Imp. 1 low limit* Imp. 1 high limit* Input 2 impedance Imp. 2 low limit* Imp. 2 high limit* Output setup mA1 setup...
  • Page 63 Loop test Basic setup Distributor Model Device information Date Descriptor Message Poll addr Num resp preams Review Model Distributor Write protect Manufacturer Dev id Descriptor Message Date Universal rev Fld dev rev Sofware rev Poll addr Num req preams (Note): HART protocol DD files can be downloaded by following URL. http://www.yokogawa.com/an/download/an-dl-fieldbus-001en.htm IM 12B07C05-01E...

  • Page 64: Appendix 3, Temperature Compensation Matrix

    Appendix 3, Temperature compensation matrix 1. A minimum number of values is required to make interpolation possible. The highlighted values marked as are mandatory to enter. Tref Sol1 S1Tr S1T1 S1T5 Sol2 Sol3 Sol4 Sol5 S5Tr S5T1 S5T5 2. Tref (reference temperature) is defined in the Temperature Compensation menu. If Tref is between T1 and T5 then the value of Tref needs to be entered as T2 or T3 or T4.

  • Page 65: Appendix 4, Control Drawing For Fm Approval

    Appendix 4, Control drawing for FM approval IM 12B07C05-01E...
  • Page 66 IM 12B07C05-01E...
  • Page 67 Customer Model PH450G [Style: S2] pH and ORP Converter Maintenance Parts List 5a, 5b 6a, 6b 1a, 1b Item Part No. Description K9676GA Power board assembly AC version K9676HA Power board assembly DC version K9676EA Main board assembly PH version...
  • Page 68 Pipe/Wall Mounting Hardware (Option code: /U) Panel Mounting Hardware (Option code: /PM) UNIVERSAL MOUNT SET (Option code : /UM) includes both “/U” and “/PM”. Awning Hood (Option code: /H5) Item Part No. Description K9171SS Mounting Set (/U) Y9608KU Screw D0117XL-A U-Bolt Assembly K9171SY Plate...

  • Page 69: Revision Record

    Revision Record Manual Title : Model PH450G [Style: S2] pH and ORP Converter Manual Number : IM 12B07C05-01E Edition Date Remark (s) Jul. 2007 Newly published 2nd Sep. 2007 Back-side of cover,note added; p1, FM approval description of Figure 1-1 changed; p7, some CAUTION of Figure 3-4 and the touchscreen added; p21,sec. 4-3-11 Serial number changed; p23, parameter values corrected; p27, parameter values corrected; p29, parameter values corrected; p31, made some revisions;...
  • Page 70 ORP Converter Manual Thank you for selecting "Model PH450G [Style: S2] pH and ORP Converter." The user's manual IM 12B07C05-01E 4th edition, supplied with the product has been amended as follows, please replace the corresponding pages in your copy with the attached, revised pages.
  • Page 71 Installation and wiring product may be impaired. The PH450G converter should only be used with Yokogawa is not responsible for damage to the equipment that meets the relevant IEC, American instrument, poor performance of the instrument or Canadian standards.
  • Page 72 Authorized Representative in EEA The Authorized Representative for this This symbol indicates Alternating current. product in EEA is Yokogawa Europe B.V. (Euroweg 2, 3825 HD Amersfoort, The Netherlands). This symbol indicates Direct current.
  • Page 73 Yokogawa can not be responsible for the performance capability to meet the most advanced of the PH450G converter if these instructions are not requirements. The measurement can be used as followed. part of an automated process control system. It can also be used to indicate operating limits of a 1-1.
  • Page 74 2. GENERAL SPECIFICATIONS OF EXAxt PH450G A) Inputs specs : D ual high impedance input (≥ 10 Ω) (under referance conditions) B) Input ranges : -2 to 16 pH ORP : -1500 to 1500 mV : 0 to 100 rH Temperature - Pt1000 : -30 to 140ºC - Pt100 : -30 to 140ºC - 350Ω (DKK) : -30 to 140ºC - 5k1 : -30 to 140ºC - 6k8 : -30 to 140ºC - PTC10k : -30 to 140ºC...
  • Page 75 : Graphical Quarter VGA (320 x 240 pixels) LCD with LED backlight and touchscreen. Plain language messages in English, German, French, Spanish, Italian, Swedish ,Portuguese and Japanese. K) Form Dimension : 144 (W) x 144 (H) x Approx.144 (D) mm Converter weight : Approx. 1.5 kg L) Housing : Cast aluminum housing with chemically resistant coating; Polycarbonate cover with Polycarbonate flexible window : Protection IP66 / NEMA 4X / CSA Type 3S Colour : Silver grey PH450G-A(D)-A : IP66 cable glands are supplied with the unit PH450G-A(D)-U : NEMA 4X close up plugs are mounted in the unused cable entry holes and can be replaced by conduit fittings as required Pipe, Panel or Wall mounting using optional hardware Optional conduit adapter G1/2, 1/2NPT or M20 female M) Power supply PH450G-A : Ratings; 100-240 V AC Acceptable range; 90 to 264 V AC Ratings; 50/60 Hz Acceptable range; 50 Hz ±5%, 60 Hz ±5% Power Consumption; 15 VA PH450G-D : Ratings; 12-24 V DC...
  • Page 76 Watchdog timer : Checks microprocessor Power down : Reset to measurement Automatic safeguard: Auto return to measuring mode when touchscreen is untouched f or 10 min Model and Suffix Codes [Style: S2] Model Suffix code Option code Description PH450G ----------------- ----------------- pH / ORP Converter AC version (100…240 VAC) Power ----------------- DC version (12…24 VDC) ----------------- General purpose version Type -----------------...
  • Page 77 3. INSTALLATION AND WIRING 3-1. Installation and dimensions 3-1-1. Installation site 3-1-2. Mounting methods The PH450G converter is weatherproof and Refer to figures 3-2 and 3-3. Note that the can be installed inside or outside. It should, PH450G converter has universal mounting...
  • Page 78 Unit: mm (inch) min.185 (7.25") (5.43") 138(5.43") (5.43") Figure 3-2. Option /PM: panel mounting diagram (Note) When option code "/UM" is specified, universal pipe/wall/panel mounting kit are supplied--- same as option code "/U" and "/PM" both specified. wall mounting pipe mounting pipe mounting (vertical) (horizontal)
  • Page 79 These stoppers must be removed and replaced by FM approved conduit fittings in accord- ance with good installation practice. Also see Appedix 4, Control drawing for FM approval. Figure 3-4. Internal view of PH450G wiring compartment WARNING 3-2. Wiring 3-2-1. Preparation Always place the screen plate over the power Refer to figure 3-4.
  • Page 80 See figure 3-8. the troubleshooting section (Chapter 8) before calling Yokogawa. DANGER The minimum cross sectional area of the protective grounding wire should be 0.75 mm...
  • Page 81 (electronics) of the 3-5-1.General precautions converter. Others can be configured by the The analog output signals of the PH450G user (see section 5-11 Error Configuration). By transmit low power standard industry signals to pressing the “INFO” button on the main screen...
  • Page 82 Green Green 11 TEMPERATURE 11 TEMPERATURE BLUE BLUE 12 TEMPERATURE 12 TEMPERATURE Yellow BLUE 13 REFERENCE 13 REFERENCE BLACK BLACK 14 SOLUTION GROUND 14 SOLUTION GROUND Blue 15 METAL (MEASURE) 15 METAL (MEASURE) BLUE 16 SHIELD 16 SHIELD BLUE WHITE 17 SHIELD 17 SHIELD Cable Markers...
  • Page 83 Matrix sensor diagnostics. The PH450G is equipped with a matrix type You can check whether the log has been algorithm for accurate temperature compensa- properly cleared by changing the sensor data tion in various applications.
  • Page 84 6-7. Operation of hold function during cali- even when the measurement is stable. This will bration give reliable and accurate calibration results. PH450G has a HOLD function that will sus- pend the operation of the control/alarm relays 6-4. Sample calibration mode and mA-outputs.
  • Page 85 Quality PH450G Inspection pH and ORP Converter Standards Scope This inspection standard applies to the PH450G pH and ORP Converter. Inspection Items 2.1 Insulation resistance test *2.2 Dielectric strength test *2.3 Sensor signal input test 2.4 Temperature indication check 2.5 Current output test Note: Items marked with an asterisk (*) may only be confirmed by a test certificate.
  • Page 86 converter. This test is done on the “HIF” display of “Factory Mode”. a. Touch the [Setup] icon. b. Touch the [Commissioning]. c. Touch the [Advanced setup]. d. Touch the [Factory adjustment]. e. Enter a password. Select the [Factory Mode] in “Key.” g.
  • Page 87 Table 4 Data Display Current Output (mA DC) 4 ±0.02 12 ±0.02 20 ±0.02 After all tests are completed, a. Touch the [Exit] twice to return to the “Service” display. b. Select “Normal” in “Key”. c. Touch the [Home] icon to return to the initial display. Figure 1 Testing Circuit and Test Equipment QIS 12B07C05-01E IM 12B07C05-01E...
  • Page 88 成　績　表 ＴＥＳＴ　ＣＥＲＴＩＦＩＣＡＴＥ 4線式pH/ORP変換器 製品名称 タグNo. PRODUCT NAME 4 WIRE pH/ORP CONVERTER TAG　NO. 形名 PH450G MODEL 手配No. 計器番号 ORDER　NO. SERIAL NO. 検 査 項 目　　　INSPECTION ITEM 結 果 RESULT 外　　　観 APPEARANCE 絶縁抵抗 電源端子（1,2）一括と保護接地端子間 INSULATION 接点出力端子（31,32,33,41,42,43,51,52,53,71,72,73)一括と保護接地端子間 RESISTANCE 電流出力端子（61,62,65,66)一括と保護接地端子間 100MΩ以上 / 500V DC...
  • Page 89 (4) Wash off any of the measured solution chloride solution is used as the test solution. adhering to the sensor using tap water, then Yokogawa sells the following chemicals for wipe off any moisture droplets adhering to making test solution. The procedure for mixing the sensor.
  • Page 90 Customer Model PH450G [Style: S2] pH and ORP Converter Maintenance Parts List 5a, 5b 6a, 6b 1a, 1b Item Part No. Description K9676GA Power board assembly AC version K9676HA Power board assembly DC version K9676EB Main board assembly PH version...
  • Page 91 Pipe/Wall Mounting Hardware (Option code: /U) Panel Mounting Hardware (Option code: /PM) UNIVERSAL MOUNT SET (Option code : /UM) includes both “/U” and “/PM”. Awning Hood (Option code: /H5) Item Part No. Description K9171SS Mounting Set (/U) Y9608KU Screw D0117XL-A U-Bolt Assembly K9171SY Plate...

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