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Rosemount 8600 Vortex Flow Meter
Reference Manual
May 2019
Troubleshooting
00809-0100-4860, Rev BF
FAULT_TC (MTA option only)
The temperature sensor that is used to measure the process temperature has failed.
Contact your Field Service Center.
FAULT_RTD (MTA option only)
The RTD for cold junction compensation has failed. Contact your Field Service Center.
SIGNAL_SIMUL
The transmitter flow signal is being simulated by a signal generator internal to the
transmitter. The actual flow through the meter body is NOT being measured.
SENSOR_OFFLINE
The transmitter flow signal is being simulated by a signal generator external to the
transmitter. The actual flow through the meter body is NOT being measured.
FAULT_LOOPV
The voltage at the transmitter terminals has dropped to a level that is causing the internal
voltage supplies to drop, reducing the capability of the transmitter to accurately measure a
flow signal. Check the terminal voltage and either increase the power supply voltage or
reduce loop resistance.
5.5 Testing procedures
Use the test functions to verify that the flowmeter is functioning properly, or when you
suspect component failure or a problem with loop performance, or when instructed to do
so as part of a troubleshooting procedure. Initiate each test with a HART-based
communications device. See “Diagnostics/service” on page 45 for details.
5.6 Hardware replacement
The following procedures will help you disassemble and assemble the Rosemount 8600D
hardware if you have followed the troubleshooting guide earlier in this section of the
manual and determined that hardware components need to be replaced.
Note
Use only the procedures and new parts specifically referenced in this manual. Unauthorized
procedures or parts can affect product performance and the output signal used to control a
process, and may render the instrument dangerous.
Note
Flowmeters should not be left in service once they have been determined to be inoperable.
Note
Process should be vented before the meter body is removed from service for disassembly.
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