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8.1.5.3 SLOPE Err LO or SLOPE Err Hi appear after calibration attempt ............................69
8.1.5.4 bF1 or bF2 continuously flashes during auto calibration ..................................... 69
8.1.5.5 pH reading in buffer drifts during manual calibration ......................................... 70
8.1.5.6 Buffer calibration is acceptable; process pH is slightly different from expected

value ..................................................................................................................71

8.1.5.7 Buffer calibration is acceptable; process pH is grossly different from expected

value ..................................................................................................................71

8.1.6

Displaying diagnostic variables ...................................................................................... 74

8.1.6.1 Purpose ..............................................................................................................74
8.1.6.2 Displaying diagnostic variables .......................................................................... 74

8.1.7

Testing the transmitter by simulating the pH .................................................................75

8.1.7.1 Overview of simulating a pH input ..................................................................... 75
8.1.7.2 pH simulation when the preamplifier is located in the transmitter ..................... 75
8.1.7.3 pH simulation when the preamplifer is located in a remote junction box or in a

sensor-mounted junction box ............................................................................ 77

8.1.7.4 pH simulation with 381+ sensor .........................................................................78
8.1.7.5 pH simulation when preamplifier is in sensor ..................................................... 81

8.1.8

Factory assistance and repairs ........................................................................................81

8.1.8.1 Troubleshooting assistance ............................................................................... 81

8.2

Contacting and toroidal conductivity diagnostics and troubleshooting ........................................ 81
8.2.1

Overview of Diagnose menu ..........................................................................................81

8.2.1.1 Troubleshooting contacting conductivity analyzers ........................................... 81
8.2.1.2 Displaying diagnostic values .............................................................................. 81

8.2.2

Fault conditions ............................................................................................................. 82

8.2.2.1 Disabling faults .................................................................................................. 82
8.2.2.2 Non-disabling warnings ..................................................................................... 83

8.2.3

Diagnostic messages ..................................................................................................... 83

8.2.4

Quick troubleshooting guide ......................................................................................... 84

8.2.4.1 Field troubleshooting .........................................................................................85

8.2.5

Systematic troubleshooting ...........................................................................................86

8.2.6

RTD resistance values .................................................................................................... 86

8.2.7

5081C warning and fault messages ............................................................................... 87

8.2.8

Troubleshooting contacting and toroidal conductivity analyzers when a fault or warning
message is showing ....................................................................................................... 88

8.3

5081-A Diagnostics ...................................................................................................................... 92
8.3.1

Diagnostics overview .....................................................................................................92

Contents

Instruction Manual

iii

Содержание Rosemount5081

Страница 1: ...Instruction Manual LIQ MAN 5081 Rev A September 2017 Rosemount 5081 Explosion Proof Transmitter ...

Страница 2: ...SURE THEIR ACCURACY THEY ARE NOT TO BE CONSTRUED AS WARRANTIES OR GUARANTEES EXPRESSED OR IMPLIED REGARDING THE PRODUCTS OR SERVICES DESCRIBED HEREIN OR THEIR USE OR APPLICABILITY WE RESERVE THE RIGHT TO MODIFY OR IMPROVE THE DESIGNS OR SPECIFICATIONS OF SUCH PRODUCTS AT ANY TIME SELLER DOES NOT ASSUME RESPONSIBILITY FOR THE SELECTION USE OR MAINTENANCE OF ANY PRODUCT RESPONSIBILITY FOR PROPER SEL...

Страница 3: ...CE UNDER THE LIMITED WARRANTY CLAUSE IN SECTION 1 HEREIN IN NO EVENT REGARDLESS OF THE FORM OF THE CLAIM OR CAUSE OF ACTION WHETHER BASED IN CONTRACT INFRINGEMENT NEGLIGENCE STRICT LIABILITY OTHER TORT OR OTHERWISE SHALL SELLER S LIABILITY TO BUYER AND OR ITS CUSTOMERS EXCEED THE PRICE TO BUYER OF THE SPECIFIC GOODS MANUFACTURED OR SERVICES PROVIDED BY SELLER GIVING RISE TO THE CLAIM OR CAUSE OF A...

Страница 4: ......

Страница 5: ...isplay 19 5 2 Infrared remote control IRC 20 5 3 Menu system 21 5 3 1 Overview of main menus 21 Chapter 6 Programming basics 33 6 1 5081 programming 33 6 2 4 20 mA outputs and current generated during hold and faults 33 6 3 Temperature correction 35 6 4 Set up custom curves conductivity measurements only 36 6 4 1 Setting up a custom curve 36 6 5 Restore to default factory settings 37 6 5 1 Configu...

Страница 6: ...ng amperometric sensors 48 7 4 2 Zeroing the sensor procedure 48 7 4 3 Air calibration procedure dissolved oxygen 49 7 4 4 In process calibration procedure dissolved oxygen 50 7 4 5 Full scale calibration procedure free chlorine total chlorine ozone 51 7 4 6 Dual slope calibration free chlorine total chlorine 51 Chapter 8 Diagnostics and troubleshooting 53 8 1 pH ORP diagnostics and troubleshootin...

Страница 7: ...in a sensor mounted junction box 77 8 1 7 4 pH simulation with 381 sensor 78 8 1 7 5 pH simulation when preamplifier is in sensor 81 8 1 8 Factory assistance and repairs 81 8 1 8 1 Troubleshooting assistance 81 8 2 Contacting and toroidal conductivity diagnostics and troubleshooting 81 8 2 1 Overview of Diagnose menu 81 8 2 1 1 Troubleshooting contacting conductivity analyzers 81 8 2 1 2 Displayin...

Страница 8: ...o oxygen changes 102 8 4 4 8 Oxygen readings too low 102 8 4 5 Free chlorine measurement and calibration problems 103 8 4 5 1 Zero current outside range 103 8 4 5 2 Chlorine zero reading unstable 103 8 4 5 3 Sensor current too low 104 8 4 5 4 Chlorine process readings erratic 104 8 4 5 5 Chlorine readings drift 105 8 4 5 6 Sensor not responding to chlorine changes 105 8 4 5 7 Chlorine readings spi...

Страница 9: ... 8 4 12 1 General information about simulating temperature 116 8 4 12 2 Simulating temperature procedure 117 8 4 13 Measuring reference voltage 118 Chapter 9 Digital communications 121 9 1 HART communications 121 9 1 1 Overview of HART communication 121 9 1 2 HART interface devices 121 9 2 Foundation Fieldbus communication 122 9 2 1 Foundation Fieldbus specifications 123 9 3 Asset Management Solut...

Страница 10: ...Contents vi Rosemount 5081 ...

Страница 11: ...eys to toggle between Celsius and Fahrenheit 4 Press ENTER and then RESET 5 Press PROG NEXT and ENTER in this order 6 Use the arrow keys to toggle T AUTO between ON or OFF This determines whether the transmitter uses the process temperature ON or a manual temperature OFF Once the selection has been made press ENTER If OFF is selected then enter the manual temperature desired using the arrow keys O...

Страница 12: ...Startup procedure 2 Rosemount 5081 ...

Страница 13: ...and corrosion resistant 2 2 General specifications General specifications Table 2 1 Housing Cast aluminum with epoxy coating NEMA 4X IP65 and NEMA7B Neoprene O ring seals Dimensions 6 3 x 6 9 x 6 4 in 160 5 x 175 3 x 161 3 mm See the engineering drawings in Appendix A Conduit openings 3 4 in FNPT Ambient temperature 4 to 149 F 20 to 65 C Storage temperature 22 to 176 F 30 to 80 C Relative humidity...

Страница 14: ... voltage should cover the voltage drop on the cable plus the external load resistor re quired for HART communications 250 Ohms minimum Minimum power voltage is 12 Vdc Maximum power voltage is 42 4 Vdc 30 Vdc for intrinsically safe operation The graph shows the supply voltage required to maintain 12 Vdc upper line and 30 Vdc lower line at the transmitter terminals when the current is 22 mA Analog o...

Страница 15: ...oy and given a protective polyurethane paint finish however care should be taken to prevent it from impact or abrasion if located in a Zone 0 environment Certification standards IEC 60079 0 2011 IEC 60079 11 2011 ATEX Certificate Bas02ATEX1284X 5081A P Baseef03ATEX0099X 5081C Baseefa03ATEX0399X 5081T Intrinsically safe marking Ex ia IIC T4 Ga 20 C Tamb 65 C Certification conditions The 5081 enclos...

Страница 16: ... C 4X enclosure type Certification conditions For Non Incendive Field Wiring installation see drawings 1400674 or 1400675 Certification standards CSA standards 22 2 No 0 M1987 22 2 No 142 M1987 22 2 No 157 921 22 2 No 213 M1987 FM Explosion proof certification Class I Division 1 Groups B C D T6 Tamb max 70 C 4X enclosure type Certification conditions Install per control drawing 1400678 or 1400679 ...

Страница 17: ... entering the pH values The microprocessor automatically calculates the slope which is used for self diagnostics An error message is displayed if the pH sensor is faulty This slope can be read on the display and or manually adjusted if desired An on line one point process standardization is accomplished by entering the pH or ORP value of a grab sample as measured by a lab reference Preamplifier lo...

Страница 18: ...ivity Compatible RTD 100 Ohm or 1000 Ohm with automatic recognition Toroidal conductivity Table 2 6 Measured range 50 to 2 000 000 µS cm Calibration Calibration is easily accomplished by immersing the sensor in a known solution and entering its value Automatic temperature compensation 3 wire Pt 100 RTD Conductivity 32 to 392 F 0 to 200 C concentration 32 to 212 F 0 to 100 C Accuracy 1 0 of reading...

Страница 19: ...ppm auto ranges at 0 999 to 1 00 and 9 99 to 10 0 Temperature correction for membrane permeability Automatic between 5 and 35 C can be disabled Calibration Against grab sample analyzed using portable test kit Ozone Table 2 10 Measurement range 0 10 ppm mg L Resolution 0 001 ppm auto ranges at 0 999 to 1 00 and 9 99 to 10 0 Temperature correction for membrane permeability Automatic between 41 and 9...

Страница 20: ...idal conductivity A Amperometric oxygen ozone and chlorine Code Required selection HT Analog 4 20 mA output with superimposed HART digital signal FF Foundation Fieldbus digital output FI Foundation Fieldbus digital input with FISCO Code Required selection 20 Infrared remote controller included 21 Infrared remote controller not included Code Agency approvals 60 No approval 67 FM approved intrinsica...

Страница 21: ...e plant environment keep the security lock in place over the circuit end cap To remove the circuit end cap loosen the lock nut until the tab disengages from the cap end and then unscrew the cover 3 The transmitter has two 3 4 inch conduit openings one on each side of the housing Run sensor cable through the left side opening as viewed from the wiring terminal end of the transmitter and run power w...

Страница 22: ...the cap 2 Remove the three bolts holding the circuit board stack 3 Lift and rotate the display board 90 degrees clockwise or counterclockwise into the desired position 4 Position the display board on the stand offs Replace and tighten the bolts 5 Replace the circuit end cap 3 2 3 Mounting on a flat surface Mounting 5081 on a flat surface Figure 3 1 3 2 4 Mounting on a pipe Use pipe mounting kit 23...

Страница 23: ...Mounting 5081 on a pipe Figure 3 2 Installation Instruction Manual 13 ...

Страница 24: ...Installation 14 Rosemount 5081 ...

Страница 25: ...power supply for load resister 250 Ohms Maximum power supply voltage 42 0 Vdc Maximum power supply voltage for intrinsically safe instal lations 30 0 Vdc Graph Table 4 1 Upper line Power supply voltage needed to provide 12 Vdc at the transmitter terminals for a 22 mA current Lower line Power supply voltage needed to provide 30 Vdc for a 22 mA current Maximum current About 24 mA Minimum load for di...

Страница 26: ...ansmitter to earth ground NOTICE For optimum EMI RFI immunity 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 signal wiring at least 6 ft 2 m away from heavy electrical equipment An additional 0 1 mA curr...

Страница 27: ...l wiring architecture Figure 4 2 A Filter B Terminators C Trunk D Spur The power supply filter first terminator and configuration device are typically located in the control room Wiring Instruction Manual 17 ...

Страница 28: ...Wiring 18 Rosemount 5081 ...

Страница 29: ... main display The following are examples of the main process display screen Figure 5 1 and the program display screen Figure 5 2 Main display screen Figure 5 1 A Conductivity value B Temperature in C or F Display and operation Instruction Manual 19 ...

Страница 30: ... Available commands for sub menus prompts or diagnostic messages G Appears when transmitter is in hold H Appears when a disabling condition has occurred 5 2 Infrared remote control IRC The IRC is used to read diagnostics messages calibrate connected sensors and program the transmitter It must be held within 6 feet of the transmitter and less than 15 degrees from the horizontal of the display windo...

Страница 31: ...ay options 7 ENTER Advance to the next prompt Store selected item Store value in memory 3 CAL Access to Calibration menu 8 NEXT Advance to the next sub menu 4 PROG Access to Program menu 9 EXIT End current operation Return to the first prompt in the present sub menu Changes are not saved 5 DIAG Access to diagnostics 5 3 Menu system 5 3 1 Overview of main menus There are three main menus Calibrate ...

Страница 32: ...ition current output setting dPn Current output dampening time tESt Current output test value tAUtO Automatic temperature compensation tMAn Manual temperature compensation dISPLAY Display menu header tYP Measurement type tEMP C F toggle selection OUtPUt Current mA or percent of full scale display COdE Access code OFFSt Offset value Display and operation 22 Rosemount 5081 ...

Страница 33: ...00 FAULt 22 00 dPn 0 00 tESt 12 00 ROFFSt 000 dIAG OFF iMpiC ON GFH 1500 GWH 1000 GWL 020 GFL 010 CAL 000 rEF LO rFH 140 rWH 040 rWL 000 rFL 000 tAUTO On tMAN 25 0 tYPE PM tEMP C OUtPUt Cur COdE 000 AddrESS 00 PrEAMp 02 burSt OFF Id 0 bAUTO On bUFFEr Gnd StAbiLiSE UNE 10 deLtA 00 02 tCOEF 00 00 ISO 07 00 Snr 07 00 LinE 00 FACtOrY nO YES InPut 58 9 SLOPE OFFSt GIMP 1000 rIMP 10 5081 P Ht SoFt FAULt...

Страница 34: ...22 00 dPn 0 00 tESt 12 00 ROFFSt 000 dIAG OFF iMpiC ON GFH 1500 GWH 1000 GWL 020 GFL 010 CAL 000 rEF LO rFH 140 rWH 040 rWL 000 rFL 010 tAUTO On tMAN 25 0 tYPE PH tEMP C OUtPUt Cur COdE 010 AddrESS 00 PrEAMp 02 burSt OFF Id 0 bAUTO On bUFFEr Gnd StAbiLiSE UNE 10 deLtA 00 02 tCOEF 00 00 ISO 07 00 Snr 07 00 LinE 00 FACtOrY nO YES InPut 58 9 SLOPE OFFSt GIMP 1000 rIMP 10 5081 P Ht SoFt FAULtS nonE ME...

Страница 35: ...y PROG key DIAG key HOLD key Process Display CALIBRATION PROGRAM DIAGNOSTICS CALIbrAtE SEnSOr 0 tEMP AdJ CELL COnSt tEMP SLOPE1 OUtPUt CAL OutPut tEMP dISPLAY HArt SEtUP CuST dEFAULT AbS C 0 air CELL COnSt tSLOPE1 CAL F 5081 C Ht SoFt HArd FaULTs Process display screen Mtr CAL Display and operation Instruction Manual 25 ...

Страница 36: ...ROG key DIAG key HOLD key Process Display CALIBRATION PROGRAM DIAGNOSTICS CALIbrAtE SEnSOr 0 tEMP AdJ CELL COnSt tEMP SLOPE OUtPUt CAL OutPut tEMP dISPLAY HArt SEtUP CuST dEFAULT AbS C OFFSt CELL COnSt tSLOPE1 CAL F 5081 T Ht SoFt HArd FaULTs Model 5081T HT Process Display Screen Display and operation 26 Rosemount 5081 ...

Страница 37: ...display type Unit ppm sensor ADO Unit ppm temp C Output Cur Code 000 if O 2 If Cl free and total If O 3 FACTORY NO span Cal 0 Cal stabilize limit 00 05 time 10 SlOpe snGl Salnty 00 0 All if chlorine if O 2 Line 60 PH Pamp trans Man 7 00 diaGnostiC roffst 060 diaG OFF lmptC On GFI 1500 GFL 000 pH Cal baUtO On bUFFEr Std StAbILISE tIME 00 dELtA 0 02 Cl only if On if Off Enter Next Unit nnHG pman 760...

Страница 38: ...rOFFSt 060 dIAG OFF iMpiC ON GFH 1500 GWH 1000 GWL 020 GFL 010 CAL 000 rEF LO rFH 140 rWH 040 rWL 000 rFL 000 tAUTO On tMAN 25 0 tYPE PH tEMP C OUtPUt Cur COdE 000 bAUTO On bUFFEr Std StAbiLiSE tIME 10 deLtA 00 02 tCOEF 00 00 ISO 07 00 Snr 07 00 LinE 60 FACtOrY NO YES InPut 58 9 SLOPE OFFSt GIMP 1000 rIMP 10 5081 P Ht SoFt FAULtS nonE MENU Sub menu PROMPT Diag Message HArd Foundation Fieldbus pH m...

Страница 39: ...AY LinE FrEq PAMP trAnS dEFAULt rOFFSt 060 dIAG OFF iMpiC OFF rEF LO rFH 140 rWH 040 rWL 000 rFL 000 tYPE ORP tEMP C OUtPUt Cur COdE 000 LinE 60 FACtOrY nO YES OFFSt 120 rIMP 10 5081 P FF SoFt 00 02 FAULtS nonE MENU Sub menu PROMPT Diag Message Hard 01 Foundation Fieldbus ORP menu tree Display and operation Instruction Manual 29 ...

Страница 40: ...ductivity menu tree CAL key PROG key DIAG key HOLD key Process Display CALIBRATION PROGRAM DIAGNOSTICS CALIbrAtE SEnSOr 0 tEMP AdJ Mtr CAL CELL COnSt tEMP SLOPE1 tEMP dISPLAY SEtUP CuST dEFAULT AbS C 0 air CELL COnSt tSLOPE1 CAL F 5081 C FF SoFt HArd FaULTs Process display screen Display and operation 30 Rosemount 5081 ...

Страница 41: ...bus toroidal conductivity menu tree CAL key PROG key DIAG key HOLD key Process Display CALIBRATION PROGRAM DIAGNOSTICS CALIbrAtE SEnSOr 0 tEMP AdJ CELL COnSt tEMP SLOPE tEMP dISPLAY SEtUP CuST dEFAULT AbS C OFFSt CELL COnSt tSLOPE CAL F 5081 T FF SoFt HArd FaULTs Display and operation Instruction Manual 31 ...

Страница 42: ...ozone menu tree temp DEFAULT Cal setup Line freq bar press taUto On tman 25 0 display type Unit ppm sensor stnd Unit ppm temp C Output Cur Code 000 if O 2 If Cl free and total If O 3 FACTORY NO span Cal 0 Cal stabilize limit 00 05 time 10 SlOpe snGl Salnty 00 0 All if chlorine if O 2 Line 60 PH Pamp trans Man 7 00 diaGnostiC roffst 060 diaG OFF lmptC On GFI 1500 GFL 000 pH Cal baUtO On bUFFEr Std ...

Страница 43: ...c temperature correction enable or disable 5 Type of measurement 6 Measurement range 7 Factory default setting 6 2 4 20 mA outputs and current generated during hold and faults 1 Press PROG on the remote controller The OUTPUT submenu appears 2 Press ENTER The screen displays the 4mA prompt 3 Use the arrow keys to change the setting Press ENTER to save The screen displays the 20mA prompt Programming...

Страница 44: ...cted the transmitter will hold the output value 6 Press ENTER to save NOTICE The hold setting overrides the fault setting The screen displays the FAULT prompt 7 Use the arrow keys to change the setting to the output desired when the transmitter is in fault mode The range is 3 80 to 22 0 mA If 00 00 is selected the transmitter will hold the output value 8 Press ENTER to save The screen displays the...

Страница 45: ...ess EXIT to end the test 12 Press RESET to return to the main display 6 3 Temperature correction 1 Press PROG Press NEXT until the TEMP submenu appears on the display 2 Press ENTER The screen displays the T AUTO prompt 3 Use the up or down arrow keys to enable ON or disable OFF the automatic temperature correction feature Press ENTER to save The T MAN prompt is displayed Programming basics Instruc...

Страница 46: ...is recommended that the graph of conductivity vs concentration for the particular liquid is observed to ensure that unsuitable points are avoided Unsuitable points include conductivity values with two concentrations associated with them In addition to unsuitable points record any critical points points that best describe the curve Following these general guidelines will provide optimal results The...

Страница 47: ...r Pt 1 in uS cm Press ENTER c Complete this process for additional known data points Press ENTER CALC CUST appears briefly d Press ENTER PROCESSING appears briefly then APPLY CUST appears e Press ENTER to register the custom curve into memory and return to the SETUP CUST screen The custom curve will now be used to display and output all conductivity measurement when CUST is selected in the display...

Страница 48: ...ter 555 at the ID prompt and press ENTER The transmitter displays the present code 2 Press EXIT to return to the process display 3 Press PROG or CAL The ID screen appears 4 Use the editing keys to enter the security code Then press ENTER The first sub menu under the selected menu appears 6 7 Using HOLD 6 7 1 HOLD overview Activating HOLD keeps the transmitter output at the last value or sends the ...

Страница 49: ... or deactivating HOLD 1 Press HOLD on the remote controller The HOLD prompt appears in the display 2 Press 3 up or 5 down to toggle HOLD between ON and OFF 3 Press ENTER to save Programming basics Instruction Manual 39 ...

Страница 50: ...Programming basics 40 Rosemount 5081 ...

Страница 51: ...solution is higher than the pH of the process stream For best results make sure that the temperature of the solution is the same temperature as that of the sensor Allow the entire measurement cell sensor and solution to reach relatively constant temperature Using buffers at high temperatures can cause evaporation which will change the concentration of the buffer The change in concentration causes ...

Страница 52: ...ER to save the first calibration point CAL BF2 appears 6 Remove the sensor from the first buffer 7 Rinse the sensor and place it in the second buffer solution Again make sure the bulb is completely submerged and the bubbles are dislodged by swirling the sensor body 8 Press ENTER BF2 flashes until the reading is stable 9 Repeat steps 4 and 5 The calibration is now complete but the transmitter remai...

Страница 53: ... minutes after the CAL BF1 prompt If you do not press ENTER the transmitter exits the CALIBRATE menu and returns to the process mode 5 At the CALBF2 prompt remove the sensor from the first buffer Repeat steps 3 and 4 The calibration is now complete but the transmitter remains in the CALIBRATE sub menu for two minutes after you press ENTER 6 Remove the sensor from the buffer and reinstall it into t...

Страница 54: ...perature should be relatively stable 4 Take a grab sample from the process stream as close to the pH sensor as possible This transmitter reading is called the pH_trans 5 Measure the pH of the sample pH_std using the second pH meter 6 Note the current process reading pH_curr Calculate the corrected reading from the equation ph_corr ph_curr pH_std pH_trans pH_corr corrected pH value pH_curr current ...

Страница 55: ...reach a constant temperature 2 Press CAL on the IRC to enter the CALIBRATE menu The STD submenu appears 3 At the STD submenu press NEXT The TEMP ADJ submenu appears 4 Press ENTER to display the temperature editing prompt 5 Compare the temperature displayed by the transmitter with the temperature measured by the reference thermometer If there is a discrepancy between the two values use the editing ...

Страница 56: ...it in the ORP standard with a reference thermometer Ensure that the ORP sensor is submerged at least 3 in below the water level 3 Once the temperature and ORP readings are stable press ENTER 4 Use the editing keys to change the flashing display to the desired ORP reading Press ENTER to save 5 Press EXIT to return to the main display 7 2 4 Matching transmitter to ORP sensor s temperature element 1 ...

Страница 57: ...he TEMP submenu appears 3 Place the sensor in any solution of known temperature Allow the temperature of the sensor to become relatively stable 4 Use the editing keys of the IRC to change the values as needed 5 Press ENTER to standardize the temperature reading and return to the TEMP ADJ screen 6 Press EXIT to return to the main display 7 3 5 In process calibration 1 Press CAL and then NEXT three ...

Страница 58: ... OUTPUT CAL submenu appears Press ENTER 4 Use the arrow keys to change the display to match the reading from the milliammeter Press ENTER 5 Press RESET to return to the main display 7 4 Calibrating dissolved oxygen ozone free chlorine total chlorine and ozone sensors 7 4 1 Calibrating amperometric sensors Amperometric sensors can be calibrated in multiple ways zeroing air calibrations dual slope c...

Страница 59: ...pears and remains until the zero current is below the concentration limit If the current is already below the limit TIME DELAY will not appear 7 To bypass the time delay press ENTER When the procedure is complete 0 DONE appears 8 Press EXIT 9 Press RESET to return to the main display 7 4 3 Air calibration procedure dissolved oxygen 1 Remove the sensor from the process liquid Use a soft tissue and ...

Страница 60: ... In process calibration procedure dissolved oxygen The sensor can be calibrated against a standard instrument 1 Press CAL on the IRC 2 Press NEXT The SENSOR CAL submenu appears 3 Press ENTER 4 Press NEXT The AIR CAL prompt appears 5 Press NEXT The INPROCESS prompt appears 6 Press ENTER The TIME DELAY message appears and will remain until the sensor is relatively stable To bypass the time delay pre...

Страница 61: ...turn to the main display 7 4 6 Dual slope calibration free chlorine total chlorine 1 Zero the sensor 2 Place the sensor in the process liquid Ensure that the pH sensor is calibrated or the pH valve is entered in case of manual pH correction if applicable 3 Press CAL on the IRC Press NEXT The SENSOR CAL prompt appears 4 Press ENTER The CAL PT1 prompt appears 5 Adjust the chlorine concentration unti...

Страница 62: ... time delay press ENTER The GRAB SPL prompt appears 10 Take the sample of the process liquid and determine the concentration of chlorine in the sample 11 Press ENTER The PT2 prompt appears 12 Use the arrow keys to change the flashing display to the concentration of chlorine determined in the grab sample Press ENTER to save 13 Press RESET to return to the main display Measurements 52 Rosemount 5081...

Страница 63: ... showing all measurements should be regarded as erroneous When a Warning condition exists 1 The main display remains stable it does not flash 2 A warning message appears alternately with the temperature display See Figure 8 1 See Section 8 1 4 for an explanation of the different warnings and suggested ways of correcting the problem Warning annunciation Figure 8 1 When a Fault exists 1 The main dis...

Страница 64: ...t area on the screen 8 1 2 Calibration errors If an error occurs during calibration an error message appears in the main display and the transmitter does not update the calibration The calibration errors are Std Err SLOPE Err LO and SLOPE Err HI See Section 8 1 4 for an explanation of the error messages and suggested ways of correcting the problem 8 1 3 Troubleshooting general Follow the steps bel...

Страница 65: ...AIL AdC WArn AdC WArn or CyCLE PWr CyCLE PWr AdC WArn or CyCLE PWr WrItE Err WritE Err FACt FAIL FACt FAIL error message GLASSFAIL GLASSFAIL is an electrode fault message It means the glass impedance is outside the programmed Glass Fault High GFH or Glass Fault Low GFL limit Glass Fault High suggests the electrode is aging or the electrode is not immersed in the process liquid Glass Fault Low impl...

Страница 66: ...glass impedance value GIMP measured in Step 2 c If the Glass Warning Low GWL message was also flashing lower the limit from its former value by the same amount the GFL was lowered from its former value If the sensor cannot be calibrated the pH glass membrane is likely cracked and the sensor must be replaced The crack in the glass may not be visible or may be difficult to see If the glass impedance...

Страница 67: ...it may be nearing the end of its life The electrode slope is a good indicator of remaining life Slope Condition of sensor 54 60 mV unit pH Sensor is in good condition 48 50 mV unit pH Sensor is nearing the end of its life Once the slope drops below 48 mV unit pH the sensor can no longer be calibrated b The Glass Fail High GFH limit is probably set too low for the sensor Set the GFH limit to about ...

Страница 68: ...d GLASSWArn GLASSWArn is an electrode fault message It means the glass impedance is outside the programmed Glas Warning High GWH or Glass Warning Low GWL limit Ideally when the measurement system exceeds the glass warning limits you will have adequate time to diagnose and correct problems before a failure occurs High impedance implies the electrode is aging or the sensor is not completely submerge...

Страница 69: ...at the sensor is properly wired to the transmitter Be sure the reference in wire is attached to TB 7 and the solution ground wire is attached to TB 8 NOTICE TB 8 means terminal 8 on the terminal board If correcting wiring problems makes the diagnostic message disappear the sensor is in good condition If the wiring is correct and the message still remains go to Step 3 3 Measure and make a note of t...

Страница 70: ...he measured reference impedance If rEF WARN was also displayed change the reference warning high RWH limit to about 25 kilohms greater than the measured reference impedance If the sensor cannot be calibrated the sensor has failed and must be replaced rEF WARn rEF WArn is an electrode fault message It means the reference electrode impedance exceeds the programmed reference warning high RWH limit Id...

Страница 71: ...H reading will be in error The more variable the temperature and the further the pH from 7 the greater the error Troubleshooting flowchart tEMP HI and tEMP LO 1 Check wiring jumper settings and software settings a Check the wiring between the sensor and the transmitter Pay particular attention to TB 3 RTD RTN TB 4 RTD SN and TB 5 RTD RTN NOTICE TB 3 means terminal 3 on the terminal board b Be sure...

Страница 72: ...30 C 86 F 111 7 ohms 1117 ohms 40 C 104 F 115 5 ohms 1155 ohms 50 C 122 F 119 4 ohms 1194 ohms 60 C 140 F 123 2 ohms 1232 ohms 70 C 158 F 127 1 ohms 1271 ohms 80 C 176 F 130 9 ohms 1309 ohms 90 C 194 F 134 7 ohms 1347 ohms 100 C 212 F 138 5 ohms 1385 ohms If a connections is open or shorted and it should not be the sensor has failed Replace the sensor If the measured resistances are acceptable go ...

Страница 73: ... LinE FAIL LinE FAIL almost always means the transmitter is measuring an incorrect distance between terminal TB 3 RTD RTN and TB 4 RTD SNS These terminals are critical connections for the three wire RTD measurement Figure 8 3 shows a three wire RTD connection Troubleshooting flowchart for LiNE FAIL 1 Check for miswires and open connections at TB 3 and TB 4 Open connections can be caused by loose c...

Страница 74: ...Ut WArn InPUt WArn means that the input value or the calculated pH is outside the measurement range The measured pH is less than 2 or greather than 16 Troubleshooting InPUt WArn 1 Check for miswires and open connections particularly at TB 10 Open connections can be caused by loose connections poor spade crimps or broken wires Be sure to check junction boxes for proper pass through of all wires If ...

Страница 75: ...process substantially colder or hotter than the buffer allow at least 20 minutes for readings in the buffer to stabilize Alternatively place the sensor in a container of water at ambient temperatures for 20 minutes before starting the calibration c Be sure the correct buffer values are being entered during calibration If the second calibration was successful an error was made during the first atte...

Страница 76: ...f pH 7 and 10 buffer b Allow adequate time for readings in buffer to become constant If the sensor was in a process substantially colder or hotter than the buffer allow at least 20 minutes for readings in the buffer to stabilize Alternatively place the sensor in a container of water at ambient temperature for 20 minutes before starting the calibration c Be sure the correct buffer values are being ...

Страница 77: ... calibrated replace the sensor rOM FAIL or CPU FAIL rOM FAIL or CPU FAIL means the transmitter electronics have failed Replace the electronic board stack PN 23992 02 HT or PN 23992 03 HF AdC WArn or CyCLE PWr The Adc WArn or CyCLE PWr message appears momentarily when the transmitter has recognized an internal calculation problem The transmitter repeats the calculation and the message disappears on...

Страница 78: ...trying to program or calibrate transmitter Id000 in display Error message flashing in display Section 8 1 4 Transmitter does not respond to remote con troller Transmitter not responding to IRC Calibration problems SLOPE Err HI or SLOPE Err LO appears after calibra tion attempt SLOPE Err LO or SLOPE Err Hi appear after calibra tion attempt bF1 or bF2 continuously flashes during auto cali bration bF...

Страница 79: ...a spare transmitter is not available continue with Step b b The green LED located just above and between the RESET and HOLD buttons should light when a key is pressed A piece of black rubber film may be covering the LED Scrape the film away with your fingernail to expose the LED The two clear LEDs on the front end of the IRC never light They transmit the invisible IR signal c If the green LED does...

Страница 80: ...ence junction d If the sensor is rebuildable replenish the reference electrolyte and replace the liquid junction e Replace the sensor A clean pH sensor should not drift in buffer pH reading in buffer drifts during manual calibration 1 Allow adequate time for the temperature of the sensor to reach the temperature of the buffer If the sensor was in a process substantially hotter or colder than the b...

Страница 81: ...connection between the process and sensor c If similar symptoms develop after making the connection a ground loop exists If no symptoms develop a ground loop may or may not exist 2 Check the grounding of the process a The measurement system needs one path to ground through the process liquid and piping Plastic piping fiber glass tanks and ungrounded or poorly grounded vessels do not provide a path...

Страница 82: ...c motors Keep sensor wiring out of crowded panels and cable trays d Occasionally noise can travel into the transmitter housing from the metal it is mounted on The noise is then radiated into the transmitter electronics If isolating the transmitter from its metal mounting eliminates the symptoms move the transmitter to a different location or mount it with isolating materials e If ground loop probl...

Страница 83: ...connection between the CPU and analog boards is firm Display segments missing Replace the display board Transmitter locks up 1 Turn the dc power off then turn it back on 2 If the problem persists replace the electronic board stack PN 23992 02 HT PN 23992 03 FF Transmitter periodically restarts itself If the transmitter periodically restarts itself complete the following steps 1 The problem is usua...

Страница 84: ...s 1 Press DIAG on the IRC to enter the Diagnostic menu Sensor voltage in mV InPut appears 2 Press NEXT The temperature corrected glass impedance in megohms GIMP appears 3 Press NEXT The reference impedance rIMP appears For conventional low impedance silver silver chloride reference electrodes the reference impedance has units of kilohms For the rare occasions when a high impedance reference is use...

Страница 85: ... working properly it will accurately measure the input voltage and convert it to pH Although the general procedure is the same the wiring details depend on the location of the preamplifier Consult the table to find the correct procedure Preamplifier located in Section Transmitter pH simulation when the preamplifier is located in the transmitter Remote junction box pH simulation when the preamplife...

Страница 86: ... be exactly 7 0 If the actual readings are close to expected the transmitter is probably operating normally 7 If a standard millivolt source is available remove the jumper between TB 7 and TB 10 and connect the voltage source 8 Calibrate the transmitter Use 0 0 mV for pH 7 bF1 and 177 4 mV for pH 10 bF2 If the transmitter is working it should accept the calibration 9 To check linearity leave autoc...

Страница 87: ...ect the sensor and wire the sensor side of the junction box as shown in Figure 8 5 Leave the interconnecting cable between the junction box and transmitter in place 5 Attach a jumper between TB1 7 REF IN and TB1 10 pH IN 6 From this point on continue with steps 6 through 9 in pH simulation when the preamplifier is located in the transmitter For testing using a standard millivolt source be sure to ...

Страница 88: ...r Leave the sensor cable attached 6 Remove the glass electrode cable form the BNC connection at the preamplifier 7 Connect one end of a jumper wire to the solution ground pin and connect the other end to the reference electrode pin Both pins are underneath the preamplifier Leave the preamplifier installed on the pins 8 Connect one end of a second jumper wire to the reference electrode pin Be sure ...

Страница 89: ...8 7 A Cover P N 23552 00 B Glass electrode cable C Preamp BNC connector D To center conductor of BNC E Power supply or millivolt source F Reference electrode G Jumper wire H Solution ground connector Diagnostics and troubleshooting Instruction Manual 79 ...

Страница 90: ...ne 12 If a standard millivolt source is available use it to perform a simulated calibration 13 Remove the jumper used to connect the reference pin to the center pin of the BNC Connect the negative terminal of the standard millivolt source to the reference pin and connect the positive terminal to the center pin of the BNC NOTICE Do not let the wire touch the outside of the BNC connector 14 Calibrat...

Страница 91: ... 8 2 Troubleshooting contacting conductivity analyzers 1 Look for a diagnostic fault message on the display to help pinpoint the problem Refer to Table 8 3 for an explanation of the message and a list of the possible problems that triggered it 2 Refer to the Quick troubleshooting guide Table 8 4 for common loop problems and the recommended actions to resolve them 3 Follow the step by step troubles...

Страница 92: ... of detection problems are error messages and occur when the calibration limits are exceeded Disabling faults The following things happen when a disabling fault occurs 1 Both FAULT and HOLD annunciation fields become active Figure 8 8 2 The process variable flashes at the rate of 1 second on and 1 second off 3 The appropriate fault message alternates with the normal Temperature Current output disp...

Страница 93: ... will continue until the cause of the fault has been corrected Warning annunciation Figure 8 9 8 2 3 Diagnostic messages The 5081 transmitter s diagnostics constantly monitor the conductivity loop for possible problems If an operational problem is encountered check the display for a fault or error message These are displayed in the Temperature Current output segment of the display Note the message...

Страница 94: ...conductivity range setting OvEr rAnGE The current range setting has been exceeded Verify the 4 and 20 mA settings in the Program output menu AdC Error An analog to digital conversion error has oc curred This may come up normally while readings are changing quickly Recycle the power Errors CAl Err or OFFSEt Err A calibration error has occurred between the standard and process Press RESET and repeat...

Страница 95: ... ac cess zero routine Field troubleshooting When it is apparent by grab sample analysis that the transmitter is giving inaccurate readings the following procedure should be followed Prerequisites The sensor surfaces need to be totally wetted by the process and air bubbles must not be trapped in the vicinity of electrodes If air bubbles are found the installation technique should be altered to elim...

Страница 96: ...eference of RTD resistance values at various temperatures These are used for testing and evaluation of the sensor NOTICE Resistance values are read across the RTD element and are based on the manufacturer s stated values 1 Allow enough time for the RTD element in the sensor to stabilize to the surrounding temperature RTD resistance values Table 8 5 Temperature Pt 100 resistance ohms Pt 1000 resist...

Страница 97: ... not flash 2 A warning message appears alternately with the temperature and output readings in the second line of the display See Section 8 2 3 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 appears alternately with the temperature and outp...

Страница 98: ...rature reading is less than 25 C 13 F when auto temp is selected rtd FAIL TEMP HI and TEMP LO SenSE OPEn Sense line is not connected SenSE OPEn OFFSEt Err Zero offset during standardization exceeds programmed limit OFFSEt Err FACt FAIL Unit has not been factory calibrated FAct FAIL procedure CPU FAIL Internal CPU tests have failed CPU FAIL and ROM FAIL ROM FAIL Internal memory has failed CPU FAIL ...

Страница 99: ... expected the transmitter displays the CAL Error message and the transmitter does not update the calibration For assistance refer to the troubleshooting section specific to the sensor nEEd 0 CAL nEEd 0 CAL means that the concentration of the analyte is too negative 1 Check the zero current go to 0 CurrEnt under the Diagnostic menu If the zero current is appreciably greater than the measurement cur...

Страница 100: ...ce However if the sensor is to be used at approximately constant ambient temperatures the lead wire resistance error can be eliminated by calibrating the sensor to the measurement temperature Errors caused by changes in ambient temperature cannot be eliminated 4 To make the error message disappear connect the RTD SENSE and RETURN terminals with a jumper OFFSEt Err The OFFSEt Err message appears if...

Страница 101: ... 3 Press NEXT rEPAir appears in the display 4 Press NEXT ConFIG appears in the display 5 Press NEXT rESEt appears in the display 6 Press ENTER rESEtCFG appears in the display 7 Press ENTER rESEt appears again 8 Press NEXT FActorYCAL reappears 9 Press ENTER FactOn appears in the display 10 Press 3 FactOFF appears 11 Press ENTER to store the settings 12 Press EXIT repeatedly until the main display r...

Страница 102: ...tic information that is useful in troubleshooting The diagnostics available depend on the measurement being made To read diagnostic information go to the main display and press DIAG on the infrared remote controller Press NEXT until the mnemonic for the desired information appears Refer to the approprieate section below for more information 8 3 2 Diagnostic messages for dissolved oxygen TYPE O2 Tr...

Страница 103: ...itvtY Press ENTER to display sensitivity Sensitivity is calculated during calibration It is the measured current divided by concentration O CurrEnt Press 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 Slop...

Страница 104: ... fault occurs the output remains at the programmed hold value To alert you that a fault exists the word FAULT appears in the main display and the display flashes A fault or diagnostic message also appears 6 If the transmitter is simulating an output current when the fault occurs the transmitter continues to generate the simulated current To alert you that a fault exists the word FAULT appears in t...

Страница 105: ...OM FAIL Internal memory has failed 9 4 2 13 AdC Analog to digital conversion failed AdC bAd Gnd Bad ground bAd Gnd In too biG mV signal from pH sensor is too large In too biG RitE Err CPU PCB jumper JP 1 has been removed RitE Err bAd SEnSor Bad sensor means that the sensor current is a large negative number bAd SEnSor may appear for a while when the sensor is first placed in service Observe the se...

Страница 106: ...e RTD or themistor in the case of the Hx438 and GX448 sensors is open or shorted or there is an open or short in the connecting wiring 1 See Section 8 4 12 2 Verify all wiring connections including wiring in a junction box if one is being used 3 Disconnect the RTD IN RTD SENSE and RTD RETURN leads or the thermistor leads at the transmitter Be sure to note the color of the wire and where it was att...

Страница 107: ...s before starting the calibration 4 If manual calibration was done verify that the correct pH values were entered 5 Verify all wiring connections including connections at a junction box 6 Check the pH sensor for cleanliness If the sensor looks fouled or dirty clean it Refer to the sensor instruction manual for cleaning procedures 7 Replace the sensor 0 OFFSEt The 0 OFFSEt message appears if the st...

Страница 108: ... signals the analog PCB has probably failed 3 Call the factory for assistance bAd Gnd bAd Gnd usually means a problem with the analog PCB Contact the factory In too biG In too biG means the raw millivolt signal from the pH sensor is too large 1 Verify that sensor wiring is correct and connections are tight Be sure to check connections at the junction box if one is being used 2 Replace the pH senso...

Страница 109: ...lly different from expected Sensor current different from below Process and standard instrument readings during in process calibration are substantial ly different Process and standard readings different Process readings are erratic Process readings erratic Readings drift Sensor does not respond to changes in oxy gen level Sensor not responding to oxygen changes Readings are too low Oxygen reading...

Страница 110: ...n 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 electrolyte reservoir and the membrane clear Often the flow of electrolyte can be started by simply holding the sensor with the membrane end pointing down and sharply shaking the sensor a few times as though shaking down a clinical the...

Страница 111: ...ing appears if the current process reading and the reading it is being changed to i e the reading from the standard instrument are appreciably different 1 Is the standard instrument properly zeroed and calibrated 2 Are the standard and process sensor measuring the same sample Place the sensors as close together as possible 3 Is the process sensor working properly Check the response of the process ...

Страница 112: ...o low 1 Low readings can be caused by zeroing the sensor before the residual current has reached a stable minimum value Residual current is the current the sensor generates even when no oxygen is in the sample Because the residual current is subtracted from subsequent measured currents zeroing before the current is a minimum can lead to low results Eaxample The true residual zero current for a 499...

Страница 113: ...ld be less than 0 02 ppm 3 Has adequate time been allowed for the sensor to reach a minimum stable residual current It may take several hours sometimes as long as overnight for a new sensor to stabilize 4 Check the membrane for damage and replace if necessary Chlorine zero reading unstable 1 Is the sensor properly wired to the transmitter Verify that all wiring connections are tight 2 Readings are...

Страница 114: ...its diffusion of free chlorine through the membrane reducing the sensor current and increasing the response time Clean the membrane by rinsing it with a stream of water from a wash bottle Do not use a tissue to wipe the membrane 5 If cleaning the membane does not improve the sensor response replace the membrane and electrolyte solution If necessary polish the cathode See the sensor instruction she...

Страница 115: ...ore than 0 2 use automatic pH correction Sensor not responding to chlorine changes 1 Is the grab sample test accurate Is the grab sample representative of the sample flowing to the sensor 2 Is the pH compensation correct If the transmitter is using manual pH correction verify that the pH value in the transmitter equals the actual pH to within 0 1 ph If the transmitter is using automatic pH correct...

Страница 116: ... central overflow tube and that excess sample is flowing down the tube If necessary disassemble and clean the overflow sampler See Section 8 4 6 Total chlorine measurement and calibration problems Refer to the instruction manual for the SCS921 for a complete troubleshooting guide 8 4 7 Ozone measurement and calibration problems Problem See Section Zero current is substantially outside the range 10...

Страница 117: ...end or 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 Sensor current less than 350 nA ppm If the sensor current is less than 350 nA ppm at 25 C 77 F see the following information 1 Sensor current is a strong function of temperature The sen...

Страница 118: ...drift for a while after a sudden temperature change 2 Is the membrane clean For the sensor to work properly ozone must diffuse freely through the membrane A coating on the membrane will interfere with the passage of ozone resulting in a slow response Clean the membrane by rinsing it with a stream of water from a wash bottle or gently wipe the membrane with a soft tissue 3 Is the sample flow within...

Страница 119: ...ual slope Transmitter not accepting manual slope Sensor does not respond to known pH changes Sensor not responding to pH changes Process pH is slightly different from the expected value Process pH slightly different Process pH reading changes when flow changes Process pH reading changes with flow Process pH is grossly wrong and or noisy Process pH grossly wrong or noisy Process readings are noisy ...

Страница 120: ...apidly flowing sample and high flows may affect the pH reading Typically the difference in pH reading from a 399 pH sensor in a rapidly 16 gph and slowly 2 gph flowing sample is less than about 0 05 If the change is greater than 0 05 the pH and chlorine sensors should be installed in parallel streams Process pH grossly wrong or noisy Grossly wrong or noisy readings suggest a ground loop measuremen...

Страница 121: ...ound connections or induced noise a If the sensor cable is run inside conduit there may be a short between the cable and the conduit Re run the cable outside the conduit If symptoms disappear there is a short between the cable and the conduit Likely a shield is exposed and touching the conduit Repair the cable and reinstall it in the conduit b To avoid induced noise in the sensor cable run it as f...

Страница 122: ...re 8 11 It is not necessary to disconnect the RTD leads Simulate dissolved oxygen Figure 8 11 2 Set the decade box to the resistance shown in the table Sensor Polarizing voltage Resistance Expected current 499ADO 675 mV 34 kΩ 20 µA 499ATrDO 800 mV 20 kΩ 40 µA Hx438 and Gx448 675 mV 8 4 MΩ 80 nA 3 Note the sensor current To view the sensor current a Go to the main display and press DIAG b Press NEX...

Страница 123: ...nd connect a decade box and battery as shown in Figure 8 12 It is not necessary to disconnect the RTD leads Simulate chlorine and ozone Figure 8 12 2 Set the decade box to the resistance shown in the table Sensor Polarizing voltage Resistance Expected current 499ACL 01 free chlorine 200 mV 28 MΩ 500 nA 499ACL 02 total chlorine 250 mV 675 kΩ 2000 nA 499AOZ 200 mV 2 7 MΩ 500 nA 3 Note the sensor cur...

Страница 124: ...ils depend on whether the preamplifier is in the sensor a junction box or the transmitter Preamplifier in transmitter To simulate a pH input when the preamplifier is in the transmitter complete the following steps 1 Turn off automatic temperature correction and set the manual temperature to 25 C 77 F 2 Disconnect the pH sensor Also disconnect the chlorine sensor anode lead Connect a jumper wire be...

Страница 125: ...nals and connect the voltage source as shown in Figure 8 13 Simulate pH Figure 8 13 6 Calibrate the transmitter Use 0 0 mV for Buffer 1 pH 7 00 and 177 4 mV for Buffer 2 pH 10 00 If the analyzer is working properly it should accept the calibration The slope should be 59 16 mV pH and the offset should be zero 7 To check linearity set the voltage source to the values shown in the table verify that t...

Страница 126: ...the sensor converts the high impedance signal into a low impedance signal without amplifying it To simulate pH values follow the procedure in Preamplifier in transmitter 8 4 12 Simulating temperature General information about simulating temperature The transmitter accepts either a Pt100 RTD used in pH 499ADO 499ATrDO 499ACL 01 499ACL 02 and 499AOZ sensors or a 22k NTC thermistor used in Hx438 and ...

Страница 127: ... 22k NTC thermistor Hx438 and Gx448 sensors wire the decade box to terminals 1 and 2 on TB6 To check the accuracy of the temperature measurement set the resistor to simulating the RTD to the values indicated in the table and note the temperature readings The measured temperature might not agree with the value in the table During sensor calibration an offset might have been applied to make the meas...

Страница 128: ...2 F 119 4 8 565 60 C 140 F 123 2 6 072 70 C 150 F 127 1 4 378 80 C 176 F 130 9 3 208 85 C 185 F 132 8 2 761 90 C 194 F 134 7 2 385 100 212 F 138 5 1 796 8 4 13 Measuring reference voltage Some processes contain substances that poison or shift the potential of the reference electrode Sulfide is a good example Prolonged exposure to sulfide converts the reference electrode from a silver silver chlori...

Страница 129: ...e electrode Figure 8 16 Refer to the sensor wiring diagram to identify the reference leads A laboratory silver silver chloride electrode can be used in place of the second sensor Diagnostics and troubleshooting Instruction Manual 119 ...

Страница 130: ...Diagnostics and troubleshooting 120 Rosemount 5081 ...

Страница 131: ...one another For more information about HART communications call the HART Communication Foundation at 512 794 0369 The web address is http www hartcomm org 9 1 2 HART interface devices HART communicators allow you to view measurement data pH ORP and temperature program the transmitter and download information from the transmitter for transfer to a computer for analysis Downloaded information can al...

Страница 132: ...an be used to communicate with a HART transmitter The 250 ohm load minimum must be present between the transmitter and the power supply 9 2 Foundation Fieldbus communication Figure 9 2 shows the 5081 C FF being used to measure conductivity The figure also shows three ways in which Fieldbus communciation can be used to read process variables and configure the transmitter Digital communications 122 ...

Страница 133: ...nator I Filter J Power supply 9 2 1 Foundation Fieldbus specifications Model 5081 C FF Fieldbus Transmitter Type Contacting conductivity transmitter Device ITK profile 6 released for ITK 6 0 0 6 0 1 Manufacturer identification MANUFAC_ID 0x524149 Device type DEV_TYPE 0x4084 Device revision DEV_REV 0x03 Linkmaster Yes Number of link objects 20 VCR s supported 20 Digital communications Instruction M...

Страница 134: ...ified input current for IS 300 mA Maximum certified input power for IS 1 3 W Internal capacitance Ci 0 nF Internal inductance Li 0 µH 9 3 Asset Management Solutions Asset Management Solutions AMS is software that helps plant personnel better monitor the performance of analytical instruments pressure and temperature transmitters and control valves Continuous monitoring means maintenance personnel c...

Страница 135: ...mmunicator or AMS software AMS operates in Windows 95 AMS communicates through a HART compatible modem with any HART transmitters including those from other manufacturers AMS is also compatible with Foundation Fieldbus which allows future upgrades to Fieldbus instruments Rosemount AMS windows provide access to all transmitter measurement and configuration variables You can read raw data final data...

Страница 136: ...Digital communications 126 Rosemount 5081 ...

Страница 137: ...must be supplied 3 Carefully package the materials and enclose your Letter of Transmittal If possible pack the materials in the same manner as they were received 4 Send the package prepaid to Emerson Automation Solutions Rosemount c o A F Romero 1749 Stergios Road Calexico CA 92231 Attn Factory Repair RMA No _________ 5 Mark the package Returned for Repair Model No _________ 10 3 Non warranty repa...

Страница 138: ...NOTICE Consult the factory for additional information regarding service or repair Return of material 128 Rosemount 5081 ...

Страница 139: ...S NIFW install 5081 P A 1400676 Schem FM I S NIFW install 5081 A P 1400677 Schem FM I S NIFW installation 5081 C T 1400678 Sch system FM DIP EXP proof 5081 C T 1400679 Sch system FM DIP EXP proof 5081 P A 1700783 Certified product 5081 XMTR CSA 1700784 Certified product 5081 XMTR FM 1700785 Certified product 5081 P A ATEX IECEx 1700786 Certified product 5081 C T ATEX IECEx Engineering drawings Ins...

Страница 140: ...Engineering drawings 130 Rosemount 5081 ...

Страница 141: ...Engineering drawings Instruction Manual 131 ...

Страница 142: ...Engineering drawings 132 Rosemount 5081 ...

Страница 143: ...Engineering drawings Instruction Manual 133 ...

Страница 144: ...Engineering drawings 134 Rosemount 5081 ...

Страница 145: ...Engineering drawings Instruction Manual 135 ...

Страница 146: ...Engineering drawings 136 Rosemount 5081 ...

Страница 147: ...Appendix B EU Declarations of Conformity The following pages are the EU Declarations of Conformity for the 5081 T 5081 P A and 5081 C EU Declarations of Conformity Instruction Manual 137 ...

Страница 148: ...ination Certificate Quality Assurance SGS Baseefa Notified Body Number 1180 Rockhead Business Park Staden Lane Buxton SK17 9RZ UNITED KINGDOM Assumption of conformity is based on the application of the harmonized standards EN 61326 1 2006 Electrical equipment for measurement control and laboratory use EMC requirements General requirements EN 60079 0 2012 A11 2013 Explosive atmospheres Equipment Ge...

Страница 149: ...lity Assurance SGS Baseefa Notified Body Number 1180 Rockhead Business Park Staden Lane Buxton SK17 9RZ UNITED KINGDOM Assumption of conformity is based on the application of the harmonized standards EN 61326 1 2006 Electrical equipment for measurement control and laboratory use EMC requirements General requirements EN 60079 0 2012 A11 2013 Explosive atmospheres Equipment General requirements EN 6...

Страница 150: ...ination Certificate Quality Assurance SGS Baseefa Notified Body Number 1180 Rockhead Business Park Staden Lane Buxton SK17 9RZ UNITED KINGDOM Assumption of conformity is based on the application of the harmonized standards EN 61326 1 2006 Electrical equipment for measurement control and laboratory use EMC requirements General requirements EN 60079 0 2012 A11 2013 Explosive atmospheres Equipment Ge...

Страница 151: ...EU Declarations of Conformity 138 Rosemount 5081 ...

Страница 152: ...IDDLE EAST AND AFRICA Emerson Automation Solutions Emerson FZE Jebel Ali Free Zone Dubai United Arab Emirates P O Box 17033 T 971 4 811 8100 F 971 4 886 5465 liquid csc emerson com www Emerson com RosemountLiquidAnalysis ASIA PACIFIC Emerson Automation Solutions 1 Pandan Crescent Singapore 128461 Singapore T 65 777 8211 F 65 777 0947 liquid csc emerson com www Emerson com RosemountLiquidAnalysis L...

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