Emerson Micro Motion SGM Series - Page 6

13.3 Adjust temperature measurement with Temperature Offset or Temperature Slope ................131
13.4 Perform temperature calibration ............................................................................................. 133
13.4.1 Perform temperature calibration using the display ....................................................133
13.4.2 Perform temperature calibration using ProLink III ..................................................... 134
13.4.3 Perform temperature calibration using the Field Communicator .............................. 136
13.5 Adjust concentration measurement with Trim Offset .............................................................. 137
13.6 Adjust concentration measurement with Trim Slope and Trim Offset ...................................... 138
13.7 Set up user-defined calculations .............................................................................................. 140
13.7.1 Equations used in user-defined calculations .............................................................. 142
13.7.2 Measurement units used in user-defined calculations ................................................142
Chapter 14 Troubleshooting .........................................................................................................145
14.1 Quick guide to troubleshooting ............................................................................................... 145
14.2 Check power supply wiring ...................................................................................................... 146
14.3 Check grounding ..................................................................................................................... 147
14.4 Perform loop tests ................................................................................................................... 147
14.4.1 Perform loop tests using the display .......................................................................... 148
14.4.2 Perform loop tests using ProLink III ............................................................................149
14.4.3 Perform loop tests using the Field Communicator ..................................................... 150
14.5 Status LED states ......................................................................................................................151
14.6 Status alerts, causes, and recommendations ........................................................................... 152
14.7 Density measurement problems ..............................................................................................157
14.8 Temperature measurement problems ..................................................................................... 158
14.8.1 Thermal insulation .................................................................................................... 158
14.9 Gas measurement problems .................................................................................................... 159
14.10 Concentration measurement problems ................................................................................... 159
14.11 Milliamp output problems ....................................................................................................... 160
14.12 Discrete output problems ........................................................................................................ 161
14.13 Time Period Signal (TPS) output problems ............................................................................... 162
14.14 Using sensor simulation for troubleshooting ............................................................................162
14.15 Trim mA outputs ......................................................................................................................162
14.15.1 Trim mA outputs using ProLink III .............................................................................. 163
14.15.2 Trim mA outputs using the Field Communicator ....................................................... 163
14.16 Check HART communications ..................................................................................................164
14.17 Check Lower Range Value and Upper Range Value ...................................................................165
14.18 Check mA Output Fault Action .................................................................................................166
14.19 Check for radio frequency interference (RFI) ............................................................................ 166
14.20 Check for leakage .................................................................................................................... 166
14.21 Check the coalescing filter ....................................................................................................... 167
14.22 Check the drive gain ................................................................................................................ 168
14.22.1 Excessive or erratic drive gain .................................................................................... 168
14.22.2 Collect drive gain data ...............................................................................................169
14.23 Check the pickoff voltage .........................................................................................................169
14.23.1 Collect pickoff voltage data .......................................................................................170
14.24 Check for internal electrical problems ...................................................................................... 170
14.25 Locate a device using the HART 7 Squawk feature ....................................................................171
Appendices and reference
Appendix A Calibration certificate .................................................................................................173
A.1 Sample calibration certificate ..................................................................................................173
Contents
iv Micro Motion
®
Gas Specific Gravity Meters (SGM)