9. Maintenance......................................................................................................93
9.1 Cleaning............................................................................................................. 93
9.1.1 Chemical Tolerance.................................................................................... 93
9.2 Changing the Filter...........................................................................................94
9.3 Calibration and Adjustment............................................................................ 94
9.3.1 Calibration Setup........................................................................................95
9.3.2 Eect of Environmental Compensations.................................................95
9.3.3 Limits of Adjustment..................................................................................96
9.3.4 Adjustment Types...................................................................................... 96
9.3.5 DRW244827SP Calibration Adapter........................................................ 97
10. Troubleshooting..............................................................................................99
10.1 Problem Situations........................................................................................... 99
10.2 Error Messages..................................................................................................99
10.3 Analog Output Error State.............................................................................100
10.4 Indigo Wireless Connection Troubleshooting...............................................101
11. Technical Data................................................................................................ 103
11.1 GMP252
Specifications................................................................................... 103
11.2 Spare Parts and Accessories..........................................................................106
11.3 GMP252 Probe Dimensions............................................................................107
11.4 243261SP Mounting Flange Dimensions.......................................................107
11.5 DRW244827SP Calibration Adapter Dimensions....................................... 108
11.6 ASM212017SP Spray Shield Dimensions.......................................................109
11.7 DTR250 Radiation Shield Dimensions........................................................... 110
11.8 DTR250A Pole Mounting Kit Dimensions....................................................... 111
Appendix A:
Modbus Reference.........................................................................113
A.1 Function Codes................................................................................................. 113
A.2 Modbus Registers............................................................................................. 113
A.2.1 Measurement Data.....................................................................................113
A.2.2 Configuration Registers.............................................................................114
A.2.3 Status Registers..........................................................................................116
A.2.4 Device Identification Objects....................................................................117
A.3 Modbus Communication Examples................................................................118
A.4 Filtering Factor................................................................................................ 120
Warranty
........................................................................................................................121
Technical Support......................................................................................................121
Recycling.......................................................................................................................121
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