Fisher-Rosemount 3095FT, Manual

Page: 107 / 184

5-9
Troubleshooting and Maintenance
Transmitter Electronics
• Connect a personal computer and use the User Interface Software
to check the sensor limits to ensure calibration adjustments are
within the sensor range and that calibration is correct for the
pressure being applied.
• Connect a personal computer and using the User Interface
Software, select Maintenance, Transmitter, Self Test (see Page 4-
34) to detect any electronic failures.
• Make sure the post connectors are clean.
• Confirm that the electronics housing is properly sealed against
moisture.
• If the electronics are still suspect, substitute new electronics.
Sensing Element
• The sensing element is not field repairable and must be replaced
if found to be defective. Check for obvious defects, such as a
punctured isolating diaphragm or fill fluid loss, and contact your
nearest Rosemount Service Center.
Symptom: Sluggish Output
Response/Drift Potential Source and Corrective Action
Orifice Plate
• Check for restrictions at the orifice plate.
Impulse Piping
• Check for leaks or blockage.
• Ensure that blocking valves are fully open.
• Check for sediment in the transmitter process flange.
Transmitter Electronics
• Connect a personal computer and using the User Interface
Software, select Maintenance, Transmitter, Self Test (see Page 4-
34) to detect any electronic failures.
• Confirm that damping is correctly set (see Page 4-30).
• Confirm that electronics housing is properly sealed against
moisture.
Sensing Element
• The sensing element is not field repairable and must be replaced
if found to be defective. Check for defects, such as a ruptured
isolating diaphragm or fill fluid loss, and contact your nearest
Rosemount Service Center.
• Confirm that the electronics housing is properly sealed against
moisture.