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Reference Manual
00809-0100-4002, Rev BB
November 2012
Rosemount 1199
6-2
.
Table 6-1. Troubleshooting Seal Systems.
PROBLEM
NO RESPONSE
Symptom
Potential Source
Corrective Action
No output
Electrical problem
See the troubleshooting section of the transmitter manual for more
extensive information.
Check for adequate voltage to the transmitter.
Check the milliampere rating of the power supply against the total
current being drawn for all transmitters being powered.
Check for shorts and multiple grounds.
Check for proper polarity at the transmitter terminal.
Check loop impedances.
See if the transmitter is in a multidrop mode.The multidrop mode locks
the output at 4 mA.
SLOW RESPONSE
Symptom
Potential Source
Corrective Action
Slow response
Damping too high
Cold Temperature
See the “Damping Adjustment” information in the Calibration section of
the transmitter manual.
Fill fluid viscosity is temperature dependent. Less viscous fill fluid
enhances time response. Heat traced capillaries can be added as an
option to maintain constant temperatures to fill fluid.
DRIFTING
Symptom
Potential Source
Corrective Action
Drifting
Temperature effect
If pressure measurement is changing, refer to “Understanding Seal
System Performance” on page 2-2 for more information.
Running Instrument Toolkit will calculate the expected performance for
the seal system. Refer to “Instrument Toolkit: Seal Ordering and
Application Process” on page 2-8 for more information.
Output reads negative
pressure
Mounting effect
The output will read negative as the remote fill fluid is applying pressure
to the low side. See Section 4: Ranging the Transmitter.
Will not respond to change in
pressure
Damaged diaphragm
Remove seal and inspect diaphragm
Do not use higher than the specified voltage to check the loop, or the
transmitter electronics may be damaged.
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