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13.0

CALIBRATION — pH ..............................................................................................

13.1

Introduction ..............................................................................................................

13.2

Procedure — Auto Calibration using the infrared remote controller.........................

13.3

Procedure — Auto Calibration using deltaV ............................................................

13.4

Procedure — Manual Calibration using the infrared remote controller ....................

13.5

Procedure — Manual Calibration using deltaV .......................................................

13.6

Standardization using the infrared remote controller ...............................................

13.7

Standardization using deltaV...................................................................................

13.8

pH Slope Adjustment using the infrared remote controller.......................................

13.9

pH Slope Adjustment using deltaV ..........................................................................

14.0

DIAGNOSTICS ........................................................................................................

14.1

General ....................................................................................................................

14.2

diagnostic Messages for dissolved oxygen............................................................

14.3

diagnostic Messages for ozone and total Chlorine ................................................

14.4

diagnostic Messages for Free Chlorine...................................................................

15.0

TROUBLESHOOTING ...........................................................................................

15.1

Warning and Fault Messages ..................................................................................

15.2

troubleshooting When a Warning or Fault Message is Showing ............................

15.3

temperature Measurement and Calibration Problems ............................................

102

15.4

oxygen Measurement and Calibration Problems ....................................................

103

15.5

Free Chlorine Measurement and Calibration Problems...........................................

105

15.6

total Chlorine Measurement and Calibration Problems...........................................

107

15.7

ozone Measurement and Calibration Problems ......................................................

108

15.8

pH Measurement and Calibration Problems ............................................................

110

15.9

Simulating Input Currents — dissolved oxygen......................................................

112

15.10 Simulating Input Currents — Chlorine and ozone...................................................

112

15.11

Simulating Inputs — pH ...........................................................................................

113

15.12 Simulating temperature ...........................................................................................

114

15.13 Measuring Reference Voltage..................................................................................

115

16.0

MAINTENANCE ......................................................................................................

116

16.1

overview ..................................................................................................................

116

16.2

transmitter Maintenance .........................................................................................

116

17.0

RETURN OF MATERIAL.........................................................................................

118

Appendix Title

Page

BAROMETRIC PRESSURE AS A FUNCTION OF ALTITUDE...............................

119

LIST OF TABLES

Number Title

Page

6-1

Analog Input Block Configuration Values ...............................................................................

6-2

Model 5081-A-FF Parameters and Methods .........................................................................

7-1

default Settings .....................................................................................................................

16-1

Replacement Parts for Model 5081-A transmitter..................................................................

117

iii

MODEL 5081-A

TABLE OF CONTENTS

TABLE OF CONTENTS CONT’D

Section Title

Page

Содержание ROSEMOUNT 5081-A

Страница 1: ...5081 A FouNdAtIoN Fieldbus two Wire Chlorine dissolved oxygen and ozone transmitter Instruction Manual LIQ_MAN_5081A FF rev M January 2015 ...

Страница 2: ...use replacement parts specified by Rosemount unauthorized parts and procedures can affect the product s performance and place the safe operation of your process at risk Look alike substitutions may result in fire electrical hazards or improper operation Ensure that all equipment doors are closed and protective covers are in place except when maintenance is being performed by qualified persons to p...

Страница 3: ...LLATION 9 2 1 unpacking and Inspection 9 2 2 orienting the display Board 9 2 3 Installation 9 2 4 Power Supply Wiring 12 3 0 WIRING 13 3 1 Wiring Model 499A oxygen Chlorine and ozone Sensors 13 3 2 Wiring Model 499ACL 01 Free Chlorine Sensors and pH Sensors 14 3 3 Wiring Model Hx438 and Gx448 Sensors 16 4 0 INTRINSICALLy SAFE AND ExPLOSION PROOF INSTALLATIONS 17 5 0 DISPLAy AND OPERATION WITH INFR...

Страница 4: ...on using deltaV 66 10 0 CALIBRATION FREE CHLORINE 67 10 1 Introduction 67 10 2 Procedure Zeroing the Sensor using the infrared remote controller 68 10 3 Procedure Zeroing the Sensor using deltaV 69 10 4 Procedure Full Scale Calibration using the infrared remote controller 70 10 5 Procedure Full Scale Calibration using deltaV 71 10 6 dual Slope Calibration 72 11 0 CALIBRATION TOTAL CHLORINE 74 11 1...

Страница 5: ...g 99 15 3 temperature Measurement and Calibration Problems 102 15 4 oxygen Measurement and Calibration Problems 103 15 5 Free Chlorine Measurement and Calibration Problems 105 15 6 total Chlorine Measurement and Calibration Problems 107 15 7 ozone Measurement and Calibration Problems 108 15 8 pH Measurement and Calibration Problems 110 15 9 Simulating Input Currents dissolved oxygen 112 15 10 Simu...

Страница 6: ...3 8 Free Chlorine sensor with optimum EMI RFI cable or Variopol cable and 399 09 62 pH sensor without internal preamplifier 15 3 9 Hx438 and Gx448 sensors 16 4 1 FMRC Explosion Proof Installation 17 4 2 FM Intrinsically Safe Installation Label 18 4 3 FM Intrinsically Safe Installation 19 4 4 CSA Intrinsically Safe Installation Label 21 4 5 CSA Intrinsically Safe Installation 22 4 6 BASEEFA AtEX In...

Страница 7: ...r changes in membrane permeability caused by temperature changes For pH measurements pH is available with free chlorine only the 5081 A features automatic buffer recognition and stabilization check Buffer pH and temperature data for commonly used buffers are stored in the analyzer Glass impedance diagnostics warn the user of an aging or failed pH sensor data are displayed in 0 8 in 20 mm high seve...

Страница 8: ...Temperature resolution 0 1 C Accuracy using RTD 0 5 C between 0 and 50 C 1 C above 50 C Accuracy using 22k NTC 0 5 C between 0 and 50 C 2 C above 50 C RFI EMI EN 61326 HAzARDOUS AREA CLASSIFICATION Intrinsic Safety Class I II III div 1 Groups A G t4 tamb 70 C Exia Entity Class I Groups A d Class II Groups E G Class III t4 tamb 70 C ATEx 0600 II 1 G Baseefa02AtEX1284 EEx ia IIC t4 tamb 20 C to 65 C...

Страница 9: ...nge 0 14 pH Resolution 0 01 pH Sensor Diagnostics Glass impedance for broken or aging electrode and reference offset Reference impedance for fouled reference junction is not avail able Repeatability 0 01 pH at 25 C SENSORS pH use Model 399 09 62 399 14 or 399VP 09 See pH sensor product data sheet for complete ordering information 1 6 SPECIFICATIONS TOTAL CHLORINE Measurement Range 0 20 ppm mg L as...

Страница 10: ...te program or diagnostic menus 2 Press ENtER to store data and settings Press NEXt to move from one submenu to the next Press EXIt to leave without storing changes 3 use the editing keys to scroll through lists of allowed settings or to change a numerical setting to the desired value 4 Pressing HoLd puts the transmitter in hold and sends the output current to a pre programmed value Pressing RESEt ...

Страница 11: ...orted 20 Mandatory Features Resource Block Alarm and Events Function Block Linking trending Multi Bit Alert Reporting Field diagnostics Additional Features Common Software download Block Instantiation Supports deltaV Auto Commissioning Supports deltaV Auto Replacement Supports deltaV Firmware Live download PlantWeb Alerts with re annunciation multibit Supports Easy Configuration Assistant Function...

Страница 12: ...unt Analytical AMS windows provide access to all transmitter measurement and configuration variables the user can read raw data final data and program settings and can reconfigure the transmitter from anywhere in the plant Figures 1 4 and 1 5 show two of the many configuration and measurement screens available FIGURE 1 4 ASSET MANAGEMENT SOLUTIONS AMS CONFIGURATION SCREEN ...

Страница 13: ...7 MODEL 5081 A SECTION 1 0 DESCRIPTION AND SPECIFICATIONS FIGURE 1 6 MODEL 5081 A MOUNTING AND DIMENSIONAL DRAWINGS MILLIMETER INCH ...

Страница 14: ...o configure and calibrate the transmitter 1 14 ACCESSORIES CODE REQUIRED SELECTION FF Foundation Fieldbus digital output CODE REQUIRED SELECTION 20 Infrared remote controller included 21 Infrared remote controller not included MODEL 5081 A SMART TWO WIRE MICROPROCESSOR TRANSMITTER CODE AGENCy APPROvALS 60 No approval 5081 A FF 20 60 ExAMPLE MODEL PN DESCRIPTION 515 dC loop power supply see product...

Страница 15: ...he transmitter in an area where temperature extremes vibrations and electromagnetic and radio frequency interference are minimized or absent 2 to prevent unintentional exposure of the transmitter circuitry to the plant environment keep the cover lock in place over the circuit end cap See Figure 2 1 to remove the circuit end cap loosen the lock nut until the tab disengages from the cap then unscrew...

Страница 16: ...MODEL 5081 A SECTION 2 0 INSTALLATION 10 FIGURE 2 1 Mounting the Model 5081 A on a flat surface MILLIMETER INCH 2 3 2 Mounting on a flat surface ...

Страница 17: ...MODEL 5081 A SECTION 2 0 INSTALLATION FIGURE 2 2 Using the pipe mounting kit PN 2002577 to attach the Model 5081 A to a pipe MILLIMETER INCH 2 3 3 Pipe Mounting dWG No REV 40508104 G dWG No REV 40508103 C ...

Страница 18: ...ect the transmitter case to earth ground NOTE For optimum EMI RFI immuni ty the power supply output cable should be shielded and enclosed in an earth grounded metal conduit do not run power supply signal wiring in the same conduit or cable tray with AC power lines or with relay actuated signal cables Keep power supply sig nal wiring at least 6 ft 2 m away from heavy electrical equipment FIGURE 2 3...

Страница 19: ...2 Wiring Model 499ACL 01 free chlorine and pH sensors 3 3 Wiring Model Hx438 and Gx448 sensors NOTE The Model 5081 A transmitter leaves the factory configured for use with the Model 499ADO sen sor ppm dissolved oxygen If a 499ADO sensor is not being used turn to Section 7 5 3 and configure the transmitter for the desired measurement ppb oxygen oxygen measured using a steam sterilizable sensor free...

Страница 20: ...more than 0 2 pH unit a continuous correction for pH must be applied to the chlorine reading therefore a pH sensor must be wired to the transmitter this section gives wiring diagrams for the pH sensors typically used When using the 499ACL 01 free chlorine sensor with a pH sensor use the RTD in the pH sensor for measuring temperature DO NOT use the RTD in the chlorine sensor the pH sensor Rtd is ne...

Страница 21: ...g in the transmitter must be changed See Section 7 8 3 FIGURE 3 8 Free chlorine sensor with optimum EMI RFI cable or variopol cable and 399 09 62 pH sensor without internal preamplifier FIGURE 3 5 Free chlorine sensor with standard cable and 399 09 62 pH sensor without internal preamplifier FIGURE 3 6 Free chlorine sensor with optimum EMI RFI cable or variopol cable and 399vP 09 pH sensor without ...

Страница 22: ...16 MODEL 5081 A SECTION 3 0 SENSOR WIRING FIGURE 3 9 Hx438 and Gx448 Sensors 3 3 WIRING Hx438 AND Gx448 SENSORS ...

Страница 23: ... CLASS III DIV 1 70 C MAX UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES REMOVE BURRS SHARP EDGES 020 MAX MACHINED FILLET RADII 020 MAX FINISH MATERIAL PROJECT ENGR APVD SIZE DWG NO REV TITLE SCALE TYPE This document contains information proprietary to Rosemount Analytical and is not to be made available to those who may compete with Rosemount Analytical CHECKED DRAWN DATE V E R E T A D E S A...

Страница 24: ...18 MODEL 5081 A SECTION 4 0 INTRINSICALLy SAFE ExPLOSION PROOF INSTALLATIONS FIGURE 4 2 FM Intrinsically Safe Installation Label ...

Страница 25: ...19 MODEL 5081 A SECTION 4 0 INTRINSICALLy SAFE ExPLOSION PROOF INSTALLATIONS FIGURE 4 3 FM Intrinsically Safe Installation 1 of 2 ...

Страница 26: ...20 MODEL 5081 A SECTION 4 0 INTRINSICALLy SAFE ExPLOSION PROOF INSTALLATIONS FIGURE 4 3 FM Intrinsically Safe Installation 2 of 2 ...

Страница 27: ...21 MODEL 5081 A SECTION 4 0 INTRINSICALLy SAFE ExPLOSION PROOF INSTALLATIONS FIGURE 4 4 CSA Intrinsically Safe Installation Label ...

Страница 28: ...PACITANCE Ca AND INDUCTANCE La WHICH CAN BE SAFELY CONNECTED TO THE APPARATUS REF TABLE III 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TO PREVENT IGNITION OF FLAMMABLE OR COMBUSTIBLE ATMOSPHERES DISCONNECT POWER BEFORE SERVICING 13 02 Vdc Pt WHERE Ca Ci SENSOR Ccable La Li SENSOR Lcable 2 THE MODEL 5081 A FF TRANSMITTER INCLUDES INTEGRAL PREAMPLIFIER CIRCUITRY AN EXTERNAL PREAMPLIFIER MAY BE ALSO USED...

Страница 29: ...NE SHEET OF 2 2 1400198 AMPEROMETRIC SENSOR AMPEROMETRIC SENSOR AMPEROMETRIC SENSOR MODEL 5081 A FF XMTR AMPEROMETRIC SENSOR PREAMP NOTE 4 TB1 4 5 7 10 UNSPECIFIED POWER SUPPLY 30 VDC MAX UNSPECIFIED POWER SUPPLY 30 VDC MAX UNSPECIFIED POWER SUPPLY 30 VDC MAX UNSPECIFIED POWER SUPPLY 30 VDC MAX INFRARED RED REMOTE CONTROL UNIT RMT PN 23572 00 FOR USE IN CLASS I AREA ONLY PH SENSOR RECOMMENDED CABL...

Страница 30: ...ACHINE FILLET RADII 020 MAX NOMINAL SURFACE FINISH 125 ANGLES 1 2 XX 03 XXX 010 THIS FILE CREATED USING SOLID EDGE SIZE B DWG NO 9241472 00 REV E 4 18 02 J FLOCK J FLOCK 8 20 02 8 20 02 LABEL I S BAS ATEX 5081 A FF D 8226 08 09 02 E H C O C E E E S 5 4 2 0 1 D Q L 9241472 00 1 4 Baseefa E No modifications permitted without the approval of the Authorized Person Related Drawing Baseefa Certified Pro...

Страница 31: ...OF THE INTRINSICALLY SAFE APPARATUS INCLUDING INTERCONNECTING WIRING MUST BE EQUAL OR LESS THAN THE CAPACITANCE Ca AND INDUCTANCE La WHICH CAN BE SAFELY CONNECTED TO THE APPARATUS REF TABLE III 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TO PREVENT IGNITION OF FLAMMABLE OR COMBUSTIBLE ATMOSPHERES DISCONNECT POWER BEFORE SERVICING 13 02 Vdc Pt WHERE Ca Ci SENSOR Ccable La Li SENSOR Lcable 1 THE MODEL 50...

Страница 32: ...E SHEET OF 2 2 1400294 AMPEROMETRIC SENSOR AMPEROMETRIC SENSOR AMPEROMETRIC SENSOR MODEL 5081 A FI XMTR AMPEROMETRIC SENSOR PREAMP NOTE 4 TB1 4 5 7 10 UNSPECIFIED POWER SUPPLY 17 5 VDC MAX INFRARED RED REMOTE CONTROL UNIT RMT PN 23572 00 FOR USE IN CLASS I AREA ONLY PH SENSOR RECOMMENDED CABLE PN 9200273 UNPREPPED PN 23646 01 PREPPED 10 COND 2 SHIELDS 24 AWG SEE NOTE 1 SAFETY BARRIER SEE NOTE 8 IS...

Страница 33: ...EDGES MACHINE FILLET RADII 020 MAX NOMINAL SURFACE FINISH 125 ANGLES 1 2 XX 03 XXX 010 THIS FILE CREATED USING SOLID EDGE SIZE B DWG NO 9241472 01 REV B 5 3 04 J FLOCK J FLOCK 5 6 04 5 6 04 LABEL I S BAS ATEX 5081 A FI A 8925 5 6 04 B H C O C E E E S 5 4 2 0 1 D Q L 9241472 01 1 4 Baseefa B No modifications permitted without the approval of the Authorized Person Related Drawing Baseefa Certified P...

Страница 34: ...CO PARAMETERS 5081 A FI TABLE III MODEL NO 10 5 32 Vmax Vdc Li uH Ci nF Pmax W Imax mA SUPPLY SIGNAL TERMINALS TB 1 15 16 MAY BE ALSO USED THE OUTPUT PARAMETERS SPECIFIED IN TABLE II ARE VALID FOR EITHER PREAMPLIFIER 1 THE MODEL 5081 A FI TRANSMITTER INCLUDES INTEGRAL PREAMPLIFIER CIRCUITRY AN EXTERNAL PREAMPLIFIER La Li SENSOR Lcable WHERE Ca Ci SENSOR Ccable Pt 13 02 Vdc DISCONNECT POWER BEFORE ...

Страница 35: ...EETS REQUIREMENTS FM APPROVED PREAMP SEE NOTE 1 10 COND 2 SHIELDS 24 AWG PN 23646 01 PREPPED PN 9200273 UNPREPPED RECOMMENDED CABLE INFRARED RED REMOTE CONTROL UNIT RMT PN 23572 00 FOR USE IN CLASS I AREA ONLY 10 7 5 4 TB1 NOTE 2 PREAMP XMTR 5081 A FI MODEL 1400292 2 2 SHEET OF NONE B 1400292 D C D C B A 1 2 3 4 5 6 7 8 6 7 8 5 4 3 2 B A 06 01 1 D to those who may compete with Rosemount Analytical...

Страница 36: ...30 ...

Страница 37: ...y Screens 5 2 Infrared Remote Controller IRC Key Functions 5 3 Menu Tree 5 4 Diagnostic Messages 5 5 Security 5 6 Using Hold FIGURE 5 2 Program Display Screen the program display screen allows access to calibration and programming menus FIGURE 5 1 Process Display Screen If the transmitter is configured to measure free chlorine a second screen showing pH can be displayed by pressing the é or ê key ...

Страница 38: ...return the transmit ter to factory default settings CAL Press CAL to access the calibra tion menu PROG Press PRoG to access the pro gram menu DIAG Press dIAG to read diagnostic messages HOLD Press HoLd to access the prompts used for turning on or off the hold function ARROW KEyS use é and ê keys to increase or decrease a number or to scroll through items in a list use the ç or è keys to move the c...

Страница 39: ... enter the security code Press ENtER 3 If the security code is correct the first submenu appears If the code is incorrect the process display reappears 4 to retrieve a forgotten code number enter 555 at the Id prompt the present security code will appear PRoGRAM Id EXIt ENtER 000 5 5 2 Change security code using Fieldbus Access deltaV Explorer transducer Block Properties Identification tab Paramet...

Страница 40: ... bf1 bf1 4 01 Cal bf2 bf2 10 00 Man Cal Cal bf1 bf1 7 00 Cal bf2 bf2 7 00 std pH pH slope std 07 00 slope 59 16 Unit ppm type bar press Unit nnHG pman 760 Unit ppm sensor stnd 0 Cal span Cal Salnty 00 0 SlOpe snGl Man 7 00 Pamp trans diaGnostIC roffst 060 diaG OFF ImptC On GFH 1500 GFL 0100 pH Cal baUtO On bUFFEr Std StAbiLiSE tIME 010 dELtA 0 02 sensor 0 sensor Cal ph Cal temp adj Cal setup MAIN ...

Страница 41: ...reranging damping temperature compensation calibration and diagnostics Resource Block the resource Block contains physical device information including available memory manu facturer identification type of device and features FOUNDATION Fieldbus Function Blocks the Model 5081 A includes four Analog Input AI function blocks and one PId Block as part of its standard offering Analog Input the Analog ...

Страница 42: ...lorine temperature sensor current and pH free chlorine only For proper operation the AI Block must be assigned to the channel corresponding to the desired measure ment and the units in the Xd_SCALE parameter of the AI Block must match the units of the measurement table 6 1 below shows the channel assignments and units for each mode of the 5081A FF TABLE 6 1 Analog Input Block Configuration values ...

Страница 43: ...k must be put in the out of Service Mode ooS to allow configuration parameters to be changed the follow ing parameters are exposed on each tab Mode Tab Allows the transducer Block to be switched between the Auto and out of Service Modes Measurement Tab Shows all of the 5081A FF live measurements and their status Amperometric Sensor Tab Contains all of the configuration and calibration parameters f...

Страница 44: ...conditions fault_history_0 fault_history_1 and fault_history_2 respectively 3 transducer Block Status 6 4 Model 5081 A FF Device Summary Manufacturer Rosemount Analytical 524149 Device Type 4083 Device Revision 1 Function Blocks Four 4 AI Blocks one 1 PId Block Link Active Scheduler Yes ITK version 6 0 Channels 1 Measurement oxygen chlorine or ozone 2 temperature 3 Sensor Current 4 pH Measurement ...

Страница 45: ...MODEL 5081 A SECTION 6 0 OPERATION WITH FOUNDATION FIELDBUS AND THE DELTAv CONTROL SySTEM TABLE 6 2 Model 5081 A FF Parameters and Methods Table 6 2 continued on following page 39 ...

Страница 46: ...40 MODEL 5081 A SECTION 6 0 OPERATION WITH FOUNDATION FIELDBUS AND THE DELTAv CONTROL SySTEM TABLE 6 2 Model 5081 A FF Parameters and Methods continued Table 6 2 continued on following page ...

Страница 47: ...MODEL 5081 A SECTION 6 0 OPERATION WITH FOUNDATION FIELDBUS AND THE DELTAv CONTROL SySTEM TABLE 6 2 Model 5081 A FF Parameters and Methods continued 41 ...

Страница 48: ...on for chlorine measurements 5 choose units for barometric pressure oxygen only 6 choose limits for diagnostic fault messages Each section contains definitions of terms used programming instructions using the infrared remote controller and pro gramming instructions using deltaV 7 2 DEFAULT SETTINGS table 7 1 lists the default settings for the 5081 A transmitter the transmitter is configured at the...

Страница 49: ...nual B Display 1 type of measurement 2 units oxygen only 3 units ozone only 4 Sensor oxygen only 5 temperature units 6 output current units 7 Security code C Calibration Setup 1 Stabilization criteria a time b change if oxygen ppm or ppb if oxygen if ozone if chlorine 2 Salinity oxygen only 3 Slope chlorine only 4 Maximum zero limit a if oxygen ppm b if oxygen ppb c if oxygen d if ozone e if chlor...

Страница 50: ...e tem perature measured by the sensor for all calculations in which temperature is used 2 MANuAL tEMPERAtuRE CoMPENSAtIoN oXYGEN CHLoRINE ANd oZoNE In manual temperature compensation the transmitter uses the temperature entered by the user for membrane permeability and pH corrections and for air calibration calculations It does not use the actual process temperature do NOT use manual temperature c...

Страница 51: ...gn The temperature entered in this step will be used in all measurements oxygen chlorine ozone or pH no matter what the process temperature is Press ENtER to save 5 Press RESEt to return to the process display 7 3 4 Procedure using Deltav Access deltaV Explorer transducer Block Properties temperature Compensation 1 Parameter Auto Manual Selection SENSoR_tEMP_CoMP Select automatic or manual tempera...

Страница 52: ...l free chlorine total chlorine or ozone 2 FREE CHLoRINE Free chlorine is the product of adding sodium hypochlorite bleach calcium hypochlorite bleaching powder or chlorine gas to fresh water Free chlorine is the sum of hypochlorous acid HoCl and hypochlorite ion oCl 3 totAL CHLoRINE total chlorine is the sum of free and combined chlorine Combined chlorine generally refers to chlorine oxidants in w...

Страница 53: ...meter Primary Value unit PRIMARY_VALuE_uNIt Select the desired units For best results make the following settings based on the sensor used AdO 499Ado trdO 499Atrdo SdO1 Hx438 or Gx448 steam sterilizable sensor SdO2 Steam sterilizable sensor from other manufacturer Sensor Units 499Ado ppm or 499Atrdo ppb Gx448 ppm or Hx438 ppm or MODEL 5081 A SECTION 7 0 PROGRAMMING 6 For best results make the foll...

Страница 54: ...e the zero current varies from sensor to sensor the transmitter can be programmed not to accept a zero current until the value has fallen below a reasonable limit 3 SALINItY dISSoLVEd oXYGEN oNLY the solubility of oxygen in water depends on the concentration of dissolved salts in the water Increasing the concentration decreases the solubility If the salt concentration is greater than about 1000 pp...

Страница 55: ...ALnty salinity prompt appears use the arrow keys to enter the salinity of the water Press ENtER Go to step 10 10 the display returns to the SPAn CAL screen Press NEXt 11 the 0 CAL screen appears Press ENtER 12 Enter the desired zero limit the units are the same as the units programmed in Sec tion 7 5 default limits are given in the table 13 Press RESEt to return to the main display PRoGRAM delta E...

Страница 56: ...ize Value AMP_SPAN_StABILIZE_VALuE Set the stabilization range to between 0 01 and 9 99 ppm the default values are shown in the table 3 Parameter Salinity SALINItY Enter the salinity of the water 4 Parameter Zero Limit AMP_ZERo_StABILIZE_VALuE Enter the desired zero limit default limits are given in the table oxygen 0 05 ppm or 1 Free chlorine 0 05 ppm total chlorine 0 05 ppm ozone 0 01 ppm oxygen...

Страница 57: ...bmenu appears Press ENtER 3 use é or ê to toggle the line frequency between 50 and 60 Hz Press ENtER to save 4 Press RESEt to return to the main display 7 6 LINE FREQUENCy 7 6 1 Purpose this section describes how to maximize noise rejection by entering the frequency of the mains power into the transmitter PRoGRAM line fre9 EXIt NEXt ENtER PRoGRAM line EXIt ENtER 60 ...

Страница 58: ...esired value exceeds the programmed limit the transmitter will not accept the new reading to estimate the millivolt difference multiply the pH difference by 60 3 pH SENSoR dIAGNoStICS the transmitter continuously monitors the pH sensor for faults A fault means that the sensor has failed or is possibly nearing failure the only pH sensor diagnostic available in the 5081 A is glass imped ance 4 GLASS...

Страница 59: ... Press é or ê to toggle between OFF dis able or On enable Press ENtER to save 7 the IMPtC glass impedance temperature correction prompt appears Press é or ê to toggle between OFF disable or On enable Because glass impedance is a strong function of temperature correcting glass impedance for temperature effects is strongly recommended Press ENtER to save 8 the GFH glass fault high prompt appears use...

Страница 60: ... ê to scroll through the list of available buffers See Section 13 1 for a list of the buffer values Press ENtER to save 14 the StAbiLiSE stabilize prompt appears to change stabilization criteria press ENtER to leave stabilization criteria at the default values press EXIt 15 Set the stabilization time between 0 and 99 seconds the default value is 10 seconds Press ENtER to save 16 Set the stabilizat...

Страница 61: ..._CoMPENSAtIoN_PH 7 Enter the reference offset limit default is 60 mV Parameter Zero offset Error Limit ZERo_oFFSEt_ERRoR_LIMIt 8 Select manual buffer calibration or automatic buffer calibration using the buffers listed in the table below More infor mation on the buffers listed can be found in Section 13 1 using automatic buffer calibration is strongly recommended Parameter Buffer Calibration BuFFE...

Страница 62: ...cent saturation measurements 7 8 2 Definitions 1 BARoMEtRIC PRESSuRE Because the current generated by an amperometric oxygen sensor is directly propor tional to the partial pressure of oxygen the sensor is generally calibrated by exposing it to water saturated air See Section 9 1 for more information to calculate the equivalent concentration of oxygen in water in ppm the transmitter must know the ...

Страница 63: ...er the desired barometric pressure units from the following Parameter Barometric Pressure unit BAR_PRESSuRE_uNIt 2 If saturation units were selected enter the desired saturation pressure Parameter Percent Saturation Pressure PERCENt_SAtuRAtIoN_PRESSuRE mm Hg kPa atm bar in Hg MODEL 5081 A SECTION 7 0 PROGRAMMING ...

Страница 64: ...res the temperature From the tem perature the transmitter calculates the vapor pressure of water and using the barometric pressure calculates the partial pressure of atmospheric oxygen once the transmitter knows the partial pressure it calculates the equilib rium solubility of oxygen in water using a temperature dependent factor called the Bunsen coefficient overall a 1 C error in the temperature ...

Страница 65: ...perature element in the sensor is completely submerged by keeping the sensor tip at least three inches below the water level Stir continuously Allow at least 20 minutes for the standard thermometer sen sor and water to reach constant temperature 8 3 PROCEDURE USING Deltav 1 Place the sensor and a calibrated reference thermometer in a container of water at ambient temperature Be sure the temperatur...

Страница 66: ...l potential of oxygen in the two phases air and water is the same oxygen sensors generate a current directly proportional to the rate at which oxygen molecules diffuse through a membrane stretched over the end of the sensor the diffusion rate depends on the difference in chemical poten tial between oxygen in the sensor and oxygen in the sample An electrochemical reaction which destroys any oxy gen...

Страница 67: ...n limit shown in the previous screen If the current is already below the limit tiME dELAy will not appear to bypass the time delay press ENtER 6 O donE shows that the zero step is complete Press EXIt 7 Press RESEt to return to the main display CALIBRAtE time delay EXIt ENtER CALIBRAtE 0 done EXIt 9 2 PROCEDURE zEROING THE SENSOR USING THE REMOTE CONTROLLER 1 Place the sensor in a fresh solution of...

Страница 68: ...a minimum current do Not StARt tHE ZERo RoutINE uNtIL tHE SENSoR HAS BEEN IN ZERo SoLutIoN FoR At LEASt tWo HouRS 2 Access deltaV Explorer Context Menu Zero Amperometric Sensor method_sensor_zero Method Steps a displayed Current oxygen Measurement Zero limit Is PV less than limit Yes No Abort NOTE Selecting Yes to an oxygen measurement greater than the zero limit will cause the measurement to be a...

Страница 69: ...lates the sensitivity nA ppm of the sensor to check the sensitivity go to the main display Press dIAG Press NEXt until the SenSitvty sensitivity prompt appears Press ENtER to display the sensitivity in nA ppm typical values at 25 C are given in the table CALIBRAtE A ir Cal EXIt NEXt ENtER CALIBRAtE nnHG EXIt NEXt CALIBRAtE time delay EXIt ENtER CALIBRAtE Press EXIt ENtER 760 0 9 4 PROCEDURE AIR CA...

Страница 70: ...eading in air to stabilize Stabilization time may be even longer if the process temperature is appreciably different from the air temperature For an accurate calibration temperature measured by the sensor must be stable 4 Access deltaV Explorer Context Menu Air Calibrate oxygen Sensor method_oxygen_air_cal Method Steps a displayed Current oxygen Measurement Current temperature Measurement Prompt A...

Страница 71: ...ave 9 Press RESEt to return to the main display CALIBRAtE time delay EXIt NEXt CALIBRAtE Grab spl EXIt ENtER 9 6 PROCEDURE IN PROCESS CALIBRATION USING THE REMOTE CONTROLLER 1 the transmitter and sensor can be calibrated against a standard instrument For oxygen sensors installed in aeration basins in waste treatment plants calibration against a second instrument is often preferred For an accurate ...

Страница 72: ...nd calibrated against water saturated air following the manu facturer s instructions b the standard sensor is inserted in the liquid as close to the process sensor as possible c Adequate time is allowed for the standard sensor to stabilize before calibrating the process instrument 2 Access deltaV Explorer Context Menu Calibrate Amperometric Sensor method_pv_cal Method Steps a displayed Current PV ...

Страница 73: ...Chlorine solutions are unstable Run the test immediately after taking the sample try to calibrate the sen sor when the chlorine concentration is at the upper end of the normal operating range Free chlorine measurements made with the 499ACL 01 sensor also require a pH correction Free chlorine is the sum of hypochlorous acid HoCl and hypochlorite ion oCl the relative amount of each depends on the pH...

Страница 74: ... Press ENtER 4 the screen shows the value in units ppm below which the reading must be before the zero current will be accepted the screen shows 0 02 therefore the reading must be below 0 02 ppm before the zero will be accepted For a typical 499ACL 01 sensor 0 02 ppm corre sponds to about 7 nA to change the zero limit value see Section 7 6 3 Press ENtER NOTE the number shown in the main display ma...

Страница 75: ...a minimum zero current do Not StARt tHE ZERo RoutINE uNtIL tHE SENSoR HAS BEEN IN ZERo SoLutIoN FoR At LEASt tWo HouRS 2 Access deltaV Explorer Context Menu Zero Amperometric Sensor method_sensor_zero Method Steps a displayed Current Free Chlorine Measurement Zero limit Prompt Is PV less than limit Yes No Abort NOTE Selecting Yes to a free chlorine measurement greater than the zero limit will caus...

Страница 76: ... ENtER NOTE As soon as the stability criteria are met or ENtER is pressed to bypass the time delay the transmitter stores the sensor current therefore if the chlorine level in the process liquid drifts while the sample is being tested there is no need to compensate for the change when entering test results in step 7 6 the GrAb SPL grab sample prompt appears take a sample of the process liquid and ...

Страница 77: ... sample flow until it is within the range recom mended for the chlorine sensor Refer to the sensor instruction sheet 2 Adjust the chlorine concentration until it is near the upper end of the control range Wait until the reading is stable before starting the calibration 3 Access deltaV Explorer Context Menu Calibrate Amperometric Sensor method_pv_cal Method Steps a displayed Current PV Measurement ...

Страница 78: ...is within the range recom mended for the chlorine sensor Refer to the sensor instruction sheet 4 Press CAL on the remote controller Press NEXt 5 the SEnSor CAL prompt appears Press ENtER 6 the CAL Pt 1 prompt appears Adjust the chlorine concentration until it is near the upper end of the linear range of the sensor Press ENtER 7 the tiME dELAy message appears and remains until the sensor read ing m...

Страница 79: ...il the sensor read ing meets the stability criteria set in Section 7 6 to bypass the time delay press ENtER 12 the GrAb SPL grab sample prompt appears take a sample of the process liquid and immediately determine the concentration of free chlorine in the sample Press ENtER 13 the Pt2 prompt appears use the arrow keys to change the flashing dis play to the concentration of chlorine determined in th...

Страница 80: ...74 ...

Страница 81: ...nt by subtracting it from the meas ured current before converting the result to a total chlorine value New sensors require zeroing before being placed in service and sensors should be zeroed whenever the electrolyte solution is replaced the best zero stan dard is sample without reagent added the purpose of the full scale standard is to establish the slope of the calibration curve Because stable to...

Страница 82: ...tHE SENSoR HAS BEEN IN ZERo SoLutIoN FoR At LEASt tWo HouRS 4 Press CAL on the remote controller 5 the SEnSor O prompt appears Press ENtER 6 the screen shows the value in units ppm below which the reading must be before the zero current will be accepted the screen shows 0 02 therefore the reading must be below 0 02 ppm before the zero will be accepted For a typical 499ACL 02 sensor 0 02 ppm corre ...

Страница 83: ...r in which the electrolyte solution has been replaced may require several hours occa sionally as long as overnight to reach a minimum zero current do Not StARt tHE ZERo RoutINE uNtIL tHE SENSoR HAS BEEN IN ZERo SoLutIoN FoR At LEASt tWo HouRS 4 Access deltaV Explorer Context Menu Zero Amperometric Sensor method_sensor_zero Method Steps a displayed Current total Chlorine Measurement Zero limit Prom...

Страница 84: ...as the stability criteria are met or ENtER is pressed to bypass the time delay the transmitter stores the sensor current therefore if the chlorine level in the process liquid drifts while the sample is being tested there is no need to compensate for the change when entering test results in step 7 6 the GrAb SPL grab sample prompt appears take a sample of the process liquid and immediately determin...

Страница 85: ... sample flow stays between 80 and 100 mL min and the pressure is between 3 and 5 psig 2 Adjust the chlorine concentration until it is near the upper end of the control range Wait until the controller reading is stable before starting the calibration 3 Access deltaV Explorer Context Menu Calibrate Amperometric Sensor method_pv_cal Method Steps a displayed Current PV Measurement Prompt Is value stab...

Страница 86: ...is within the range recom mended for the chlorine sensor Refer to the sensor instruction sheet 4 Press CAL on the remote controller Press NEXt 5 the SEnSor CAL prompt appears Press ENtER 6 the CAL Pt 1 prompt appears Adjust the chlorine concentration until it is near the upper end of the linear range of the sensor Press ENtER 7 the tiME dELAy message appears and remains until the sensor read ing m...

Страница 87: ...il the sensor read ing meets the stability criteria set in Section 7 6 to bypass the time delay press ENtER 12 the GrAb SPL grab sample prompt appears take a sample of the process liquid and immediately determine the concentration of total chlorine in the sample Press ENtER 13 the Pt2 prompt appears use the arrow keys to change the flashing dis play to the concentration of chlorine determined in t...

Страница 88: ...laced Either of the fol lowing makes a good zero standard deionized water tap water known to contain no ozone Expose tap water to ozone free air for several hours the purpose of the full scale standard is to establish the slope of the calibration curve Because stable ozone stan dards do not exist the sensor must be calibrated against a test run on a grab sample of the process liquid Several manufa...

Страница 89: ...NtER 4 the screen shows the value in units ppm below which the reading must be before the zero current will be accepted the screen shows 0 02 therefore the reading must be below 0 02 ppm before the zero will be accepted For a typical ozone sensor 0 02 ppm corresponds to about 7 nA to change the zero limit value see Section 7 6 3 Press ENtER NOTE the number shown in the main display may change duri...

Страница 90: ...trapped against the mem brane the sensor current will drop rapidly at first and then gradually reach a stable zero value to monitor the sensor current go to the main display Press dIAG followed by NEXt the SEnSor Cur prompt appears Press ENtER to view the sensor current Note the units nA is nanoamps µA is microamps typical zero current for an ozone sensor is 10 to 10 nanoamps A new sensor or a sen...

Страница 91: ...tivity in nA ppm the sensitivity of a 499AoZ sensor is about 350 nA ppm at 25 C CALIBRAtE Grab spl EXIt ENtER CALIBRAtE Cal EXIt ENtER 3 20 85 12 5 PROCEDURE FULL SCALE CALIBRATION USING Deltav 1 Place the sensor in the process liquid Adjust the sample flow until it is within the range recommended for the sensor Refer to the sensor instruction sheet 2 Adjust the ozone concentration until it is nea...

Страница 92: ...7 temperature pH data stored in the controller are valid between at least 0 and 60 C pH at 25 C Standard s nominal pH 1 68 NISt dIN 19266 JSI 8802 BSI see note 1 3 56 NISt BSI 3 78 NISt 4 01 NISt dIN 19266 JSI 8802 BSI 6 86 NISt dIN 19266 JSI 8802 BSI 7 00 see note 2 7 41 NISt 9 18 NISt dIN 19266 JSI 8802 BSI 10 01 NISt JSI 8802 BSI 12 45 NISt dIN 19266 FIGURE 13 1 Calibration Slope and Offset Not...

Страница 93: ...mmed in Section 7 8 9 once the reading is stable the display changes to look like the figure at left the flashing number is the nominal pH that is the pH of the buffer at 25 C If the flashing number does not match the nominal pH press é or ê until the correct pH appears Press ENtER to save 10 the CAL bF2 prompt appears Remove the sensor from the first buffer Rinse the sensor and place it in the se...

Страница 94: ...n buffer 1 b displayed Current pH Measurement Current temperature Measurement Message Waiting for pH input to stabilize c displayed Current pH Measurement Current temperature Measurement Prompt Is buffer x xx pH Yes Next Buffer Previous Buffer use the next or previous buffer buttons to choose the Buffer 1 value being used Select Yes when that buffer value is reached d Prompt Place sensor in buffer...

Страница 95: ... the glass bulb and reference junction are completely submerged Swirl the sensor the main display will show the pH of the buffer based on the previous calibration Press ENtER 8 Wait until the pH reading in the main display is constant use the arrow keys to change the flashing display to the value of the buffer at the measurement temperature Press ENtER 9 the CAL bF2 prompt appears Rinse the sensor...

Страница 96: ... Buffer Standard BuFFER_StANdARd must be set to manual Method Steps a Prompt Place sensor in buffer 1 b displayed Current pH Measurement Current temperature Measurement Prompt Are values stable Yes No Abort Selecting No will cause the measurements to be re read c If yes is chosen displayed Current pH Measurement Current temperature Measurement Prompt Enter buffer 1 value d Prompt Place sensor in b...

Страница 97: ...he process liquid once readings are stable measure the pH of the liquid using a refer ence instrument Normally it is acceptable to test a grab sample Because the pH of the process liquid may change if the temperature changes measure the pH immediately after taking the grab sample For poorly buffered samples it is best to determine the pH of a continuously flowing sample from a point as close as po...

Страница 98: ...unt equivalent to the standardization offset 3 Install the sensor in the process liquid once readings are stable measure the pH of the liquid using a refer ence instrument Normally it is acceptable to test a grab sample Because the pH of the process liquid may change if the temperature changes measure the pH immediately after taking the grab sample For poorly buffered samples it is best to determi...

Страница 99: ...se the equation slope at 25 C slope at t C Changing the slope overrides the slope determined from the previous buffer calibration 2 Press CAL on the remote controller 3 Press NEXt until PH CAL appears Press ENtER 4 Press NEXt until PH SLOPE appears Press ENtER 5 the SLOPE prompt appears use the arrow keys to change the flash ing display to the desired slope Press ENtER to save 6 Press RESEt to ret...

Страница 100: ...s mitter the slope must be entered as the slope at 25 C to calculate the slope at 25 C from the slope at tem perature t C use the equation slope at 25 C slope at t C Changing the slope overrides the slope determined from the previous buffer calibration 2 Access deltaV Explorer transducer Block Properties pH Compensation tab Parameter pH slope PH_SLoPE Enter desired pH slope value 298 t C 273 ...

Страница 101: ...divided by concentration O CurrEnt Press ENtER to display the zero current measured during calibration note units bAr PreSS Press ENtER to display the barometric pressure used by the transmitter during air calibration 5081 A FF this is the model number Press ENtER to display the software revision SFtr level Press NEXt to show the hardware revision HArdr level FAULtS Press ENtER to scroll through e...

Страница 102: ...ss ENtER to display the zero current measured during calibration note units PH Press ENtER to view pH diagnostics Press NEXt to skip pH diagnostics InPut Current pH sensor input voltage in millivolts SLOPE Sensor slope in millivolts per unit pH Slope is calculated during buffer calibration See Figure 13 1 OFFSt Sensor voltage in millivolts in pH 7 buffer GIMP Glass impedance in MW 5081 A FF this i...

Страница 103: ...ts 1 the main display remains stable it does not flash 2 A warning message appears alternately with the temperature and output readings in the second line of the display See Section 15 4 for an explanation of the warning messages and suggested ways of correcting the problem When a FAULT exists 1 the main display flashes 2 the words FAuLt and HoLd appear in the main display 3 A fault message appear...

Страница 104: ...ration is a large negative number 15 2 5 tEMP HI temperature reading exceeds 150 C 15 2 1 tEMP LO temperature reading is less than 15 C 15 2 1 SEnSE OPEn Rtd sense line is open or not connected 15 2 1 PH In HI mV signal from pH sensor is too big chlorine only 15 2 6 NO SOLngnd Solution ground terminal is not connected 15 2 7 EECHECSUn An EEPRoM byte changed unexpectedly 15 2 8 EE OF during setup o...

Страница 105: ...y and press dIAG Scroll to the PH prompt and press ENtER Press NEXt until GIMP glass impedance is showing the default lower limit is 10 MW the default upper limit is 1000 MW Low glass impedance means the glass membrane is broken or cracked High glass impedance means the membrane is aging and nearing the end of its useful life High impedance can also mean the pH sensor is not completely submerged i...

Страница 106: ...arge negative number the transmitter subtracts the zero current from the measured current before converting the result to a concentration reading If the zero current is much greater than the measured current the concentration reading will be negative 1 Check the zero current and the present sensor current to view the zero current go to the main display and press ê until zero Current appears the va...

Страница 107: ...ys the SLOPE HI error If the slope is less than 45 mV pH the transmitter displays the SLOPE LO error the transmitter will not update the calibration 1 Check the buffers Inspect the buffer solutions for obvious signs of deterioration such as turbidity or mold growth Neutral and slightly acidic buffers are highly susceptible to molds Alkaline buffers pH 9 and greater if they have been exposed to air...

Страница 108: ... 13 15 2 15 CAL ErrOr CAL ErrOr appears following a calibration attempt if the new sensitivity is much less or much greater than the value typi cally expected for the sensor 1 Verify that the sensor is properly wired to the transmitter 2 Verify that the sample flow past the sensor is correct and that no air bubbles are trapped against the membrane For recommended sample flows refer to the sensor i...

Страница 109: ...ections are tight 2 Readings are often erratic when a new or rebuilt sensor is first placed in service Readings usually stabilize after an hour 3 Is the space between the membrane and cathode filled with electrolyte solution and is the flow path between the elec trolyte reservoir and the membrane clear often the flow of electrolyte can be started by simply holding the sensor with the membrane end ...

Страница 110: ...cess sensor in air and in sodium sulfite solu tion 15 4 5 Process readings are erratic 1 Readings are often erratic when a new sensor or a rebuilt sensor is first placed in service the current usually stabilizes after a few hours 2 Is the sample flow within the recommended range High sample flow may cause erratic readings Refer to the sensor instruc tion manual for recommended flow rates 3 Gas bub...

Страница 111: ...d the measured concentration is 2 05 ppm the error is now 3 3 the absolute difference between the readings remains the same 0 06 ppm 2 Sensor response depends on flow If the flow is too low readings will be low and flow sensitive Verify that the flow past the sensor equals or exceeds the minimum value See the sensor instruction manual for recommended flows If the sensor is in an aeration basin mov...

Страница 112: ...creases as pH increases Above pH 7 a 0 1 unit increase in pH lowers the current about 5 2 Sensor current depends on the rate of sample flow past the sensor tip If the flow is too low chlorine readings will be low Refer to the sensor instruction sheet for recommended sample flows 3 Low current can be caused by lack of electrolyte flow to the cathode and membrane See step 4 in Section 15 5 2 4 Is th...

Страница 113: ...calibration of the pH sensor 3 Is the membrane clean Clean the membrane and replace it if necessary Check that the holes at the base of the cath ode stem are open use a straightened paper clip to clear blockages Replace the electrolyte solution 4 Replace the sensor 15 5 7 Chlorine readings spike following sudden changes in pH Changes in pH alter the relative amounts of hypochlorous acid HoCl and h...

Страница 114: ...he wood ring remains with the membrane assembly use the end of a straightened paper clip to clear the holes at the base of the cathode stem Replace the membrane Verify that the sensor is filled with electrolyte solution Refer to the sensor instruction manual for details 15 7 3 Sensor current during calibration is substantially less than 350 nA ppm at 25 C 1 Sensor current is a strong function of t...

Страница 115: ...wash bottle or gently wipe the membrane with a soft tissue 3 Is the sample flow within the recommended range Gradual loss of sample flow will cause a downward drift 4 Is the sensor new or has it been recently serviced New or rebuilt sensors may require several hours to stabilize 15 7 6 Sensor does not respond to changes in ozone level 1 Is the grab sample test accurate Is the grab sample represent...

Страница 116: ...value differences between pH readings made with an on line instrument and a laboratory or portable instrument are normal the on line instrument is subject to process variables for example ground potentials stray voltages and orientation effects that may not affect the laboratory or portable instrument to make the process reading agree with a reference instrument see Section 13 4 15 8 6 Process pH ...

Страница 117: ...e junction box contain ing a preamplifier disconnect the wires at the sensor side of the junction box c tape back the ends of the disconnected wires to keep them from making accidental connections with other wires or terminals d Connect a jumper wire between the Rtd REtuRN and Rtd SENSE terminals see wiring diagrams in Section 3 0 e If noise and or offsets disappear the interference was coming int...

Страница 118: ...r current has the correct sign A disconnect the anode and cathode leads from terminals 13 14 and connect a decade box as shown in Figure 15 1 It is not necessary to disconnect the Rtd leads B Set the decade box to the resistance shown in the table C Note the sensor current It should be close to the value in the table the actual value depends on the voltage of the battery to view the sensor current...

Страница 119: ...he pH should be approximately 7 00 Because calibration data stored in the analyzer may be offsetting the input voltage the displayed pH may not be exactly 7 00 5 If a standard millivolt source is available disconnect the jumper wire between the pH IN and REF IN terminals and connect the voltage source as shown in Figure 15 3 6 Calibrate the transmitter using the procedure in Section 13 3 use 0 0 m...

Страница 120: ...e between the values in the table to within 0 1 C For example start with a simulated resistance of 103 9 W which corresponds to 10 0 C Assume the offset from the sensor calibration was 0 3 W Because of the offset the ana lyzer calculates temperature using 103 6 W the result is 9 2 C Now change the resistance to 107 8 W which corre sponds to 20 0 C the analyzer uses 107 5 W to calculate the tempera...

Страница 121: ... millivolts A good way to check for poisoning is to compare the voltage of the reference electrode with a silver silver chloride electrode known to be good the reference electrode from a new sensor is best See Figure 15 6 If the reference electrode is good the voltage difference should be no more than about 20 mV A poisoned reference electrode usually requires replacement FIGURE 15 6 Checking for ...

Страница 122: ...e 16 1 and table 16 1 for parts and part numbers FIGURE 16 1 Exploded view of Model 5081 A Transmitter Three screws part 13 in the drawing hold the circuit boards in place Removing the screws allows the display board part 2 and the CPU board part 3 to be easily removed A ribbon cable connects the boards The cable plugs into the CPU board and is permanently attached to the display board A 16 pin an...

Страница 123: ... 5 kg 7 33360 00 Enclosure center housing 4 lb 1 5 kg 8 33362 00 Enclosure cover rear 3 lb 1 0 kg 9 6560135 desiccant in bag one each 1 lb 0 5 kg 9550187 o ring 2 252 one front and rear covers each require an o ring 1 lb 0 5 kg 12 note Screw 8 32 x 0 5 inch for attaching terminal block to center housing 13 note Screw 8 32 x 1 75 inch for attaching circuit board stack to center housing 14 33342 00 ...

Страница 124: ...ed 3 Carefully package the materials and enclose your Letter of transmittal see Warranty If possible pack the materials in the same manner as they were received 4 Send the package prepaid to Emerson Process Management Rosemount Analytical 2400 Barranca Parkway Irvine CA 92606 Attn Factory Repair RMA No ____________ Mark the package Returned for Repair Model No ____ 17 3 NON WARRANTy REPAIR the fol...

Страница 125: ...a 0 0 1 013 760 29 91 101 3 250 820 0 983 737 29 03 98 3 500 1640 0 955 716 28 20 95 5 750 2460 0 927 695 27 37 92 7 1000 3280 0 899 674 26 55 89 9 1250 4100 0 873 655 25 77 87 3 1500 4920 0 846 635 24 98 84 6 1750 5740 0 821 616 24 24 82 1 2000 6560 0 795 596 23 47 79 5 2250 7380 0 771 579 22 78 77 1 2500 8200 0 747 560 22 06 74 7 2750 9020 0 724 543 21 38 72 4 3000 9840 0 701 526 20 70 70 1 3250...

Страница 126: ...eed upon in writing in advance by an authorized Seller representative All costs of dismantling reinstallation and freight and the time and expenses of Seller s per sonnel for site travel and diagnosis under this warranty clause shall be borne by Buyer unless accepted in writing by Seller Goods repaired and parts replaced during the warranty period shall be in warranty for the remainder of the orig...

Страница 127: ...121 ...

Страница 128: ...ks are the property of their respective owners The contents of this publication are presented for information purposes only and while effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or their use or applicability All sales are governed by our terms and conditions which are a...

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