Chapter 10
Troubleshooting
Topics covered in this chapter:
♦ Transmitter status LED states
♦ Status alarms
♦ Flow problems
♦ Density problems
♦ Temperature problems
♦ Milliamp output problems
♦ Frequency output problems
♦ Use sensor simulation for troubleshooting
♦ Check power supply wiring
♦ Check sensor-to-transmitter wiring
♦ Check grounding
♦ Check for radio frequency interference
♦ Check HART communication loop
♦ Check
♦ Check HART burst mode
♦ Check mA output trim
♦ Check
Frequency Output Maximum Pulse Width
Frequency Output Scaling Method
♦ Check cutoffs
♦ Check for slug flow
♦ Check the drive gain
♦ Check the pickoff voltage
♦ Check for electrical shorts
10.1
Transmitter status LED states
If the transmitter status LED indicates a status change, refer to the status alarms for more information
about the actions recommended to address the problem.
9739 MVD LED states
The 9739 MVD transmitter has a status LED located on the user interface.
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