Rosemount 1199 - Maintenance and Troubleshooting; Troubleshooting

Section
4-1
4 Maintenance and
Troubleshooting
Cleaning
Avoid using abrasive agents or high pressure water jets when cleaning the
diaphragm seals.
Troubleshooting
Diaphragm seal systems are factory filled systems that cannot be refilled in
the field. Do not attempt to disconnect the seals or capillaries from the
transmitter. Doing so can damage the transmitter/seal system and voids the
product warranty. The table below lists possible problems, their potential
sources, and, where applicable, a corrective action.
TABLE 4-1. Troubleshooting Seal Systems.
PROBLEM
NO RESPONSE
Symptom
Potential Source Corrective Action
No output Electrical problem
Electronic 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 4mA.
Output saturated high Elevation/suppression jumper
Air in system on high side
Loss of fill fluid on low side
See the “Zero Adjustment Range” information in the Calibration section of the
transmitter manual for jumper setting instructions.
Diaphragm systems are factory sealed. Consult the factory.
Diaphragm systems are factory sealed. Consult the factory.
Output saturated low Elevation/suppression jumper
Air in system on low side
Loss of fill fluid on high side
See the “Zero Adjustment Range” information in the Calibration section of the
transmitter manual for jumper setting instructions.
Diaphragm systems are factory sealed. Consult the factory.
Diaphragm systems are factory sealed. Consult the factory.
Output will not change with
pressure
Complete loss of fill fluid Diaphragm systems are factory sealed. Consult the factory.
SLOW RESPONSE
Symptom
Potential Source Corrective Action
Slow response Damping too high
Cold Temperature
Fill fluid low
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.
Diaphragm systems are factory sealed. Consult the factory.
DRIFTING
Symptom
Potential Source Corrective Action
Drifting Temperature effect
Air in system
Diaphragm systems are factory sealed. Consult the factory.
Diaphragm systems are factory sealed. Consult the factory.
Do not use higher than the specified voltage to check the
loop, or the transmitter electronics may be damaged.