Contents UMSITRPDS3-1
November 2005
iv
6.4.21 Self Test and Master Reset ...................................................................................6-34
7.0 CALIBRATION AND MAINTENANCE .................................................................7-1
7.1 CALIBRATION .................................................................................................................7-2
7.2 PREVENTIVE MAINTENANCE........................................................................................7-3
7.2.1 Transmitter Exterior Inspection..................................................................................7-3
7.2.2 Transmitter Exterior Cleaning....................................................................................7-3
7.2.3 Transmitter Enclosure Interior Inspection..................................................................7-4
7.2.4 Transmitter Calibration ..............................................................................................7-4
7.2.5 Impulse Piping ...........................................................................................................7-4
7.3 TROUBLESHOOTING .....................................................................................................7-5
7.3.1 Analog Output............................................................................................................7-5
7.3.2 Digital Output (Communication).................................................................................7-8
7.4 ASSEMBLY REMOVAL AND REPLACEMENT ...............................................................7-9
7.4.1 Display Assembly ....................................................................................................7-11
7.4.2 Replacing the Electronics Module ...........................................................................7-12
7.4.3 Measuring Cell Assembly Removal and Replacement............................................7-13
7.4.4 Terminal Board Assembly Removal and Replacement ...........................................7-16
7.5 NON-FIELD-REPLACEABLE ITEMS.............................................................................7-16
7.6 TRANSMITTER REPLACEMENT..................................................................................7-17
7.7 MAINTENANCE RECORDS ..........................................................................................7-18
7.8 RECOMMENDED SPARE AND REPLACEMENT PARTS............................................7-18
7.9 COMPATIBILITY, Revision Numbers.............................................................................7-19
8.0 CIRCUIT DESCRIPTION ......................................................................................8-1
8.1 OVERALL OPERATION...................................................................................................8-2
8.2 PRESSURE......................................................................................................................8-2
8.3 DIFFERENTIAL PRESSURE AND FLOW .......................................................................8-3
8.4 FLANGED LEVEL ............................................................................................................8-3
8.5 ABSOLUTE PRESSURE (DIFFERENTIAL CONSTRUCTION).......................................8-4
8.6 ABSOLUTE PRESSURE (GAUGE CONSTRUCTION) ...................................................8-4
8.7 COMMUNICATION FORMAT ..........................................................................................8-5
9.0 MODEL DESIGNATIONS AND SPECIFICATIONS .............................................9-1
9.1 MODEL DESIGNATIONS.................................................................................................9-1
9.2 ACCESSORIES .............................................................................................................9-20
9.3 SPECIFICATIONS .........................................................................................................9-21
9.4 MEASURING SPANS AND OVERLOAD LIMITS ..........................................................9-29
9.5 NETWORK TOPOLOGY................................................................................................9-35
9.5.1 Two-Wire Cable.......................................................................................................9-35
9.6 HAZARDOUS AREA cLASSIFICATIONS......................................................................9-35
9.6.1 CSA Hazardous Locations Precautions...................................................................9-36
10.0 GLOSSARY......................................................................................................10-1
11.0 APPENDIX A - ONLINE CONFIGURATION MAP............................................11-1
12.0 APPENDIX B - HAZARDOUS AREA INSTALLATION....................................12-1
13.0 APPENDIX C - ELEVATION AND SUPPRESSION CORRECTIONS..............13-1
13.1 HOW ADJUSTMENT IS MADE....................................................................................13-1
13.2 ELEVATION CALCULATION EXAMPLE .....................................................................13-2
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