6
Manual Supplement
00809-0200-4853, Rev AB
Rosemount 3051S Series Pressure Transmitter
November 2017
Rosemount 3051S Series Pressure Transmitter
5.3 Measurement troubleshooting
The transmitter provides a means to display the current process variables. If the process variable reading
is unexpected, this section provides the symptoms and possible corrective actions. See Table 4 on
page 6.
Table 4. Unexpected Process Variable (PV) Readings
5.4 Communication troubleshooting
Some host systems may ask for the device's capability level during commissioning. If prompted, the
correct value to enter for the 3051S is 1.
Failure to follow these installation guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
Electrical shock could cause death or serious injury.
If the sensor is installed in a high-voltage environment and a fault or installation error occurs, high
voltage may be present on the transmitter leads and terminals.
Use extreme caution when making contact with the leads and terminals.
Static electricity can damage sensitive components.
Observe safe handling precautions for static-sensitive components.
Symptom Corrective action
High PV
Reading, Erratic
PV Reading,
Low or no PV
reading
Primary element
• Check for restrictions at the primary element.
• Check the installation and condition of the primary element.
• Note any changes in process fluid properties that may affect output.
Impulse piping
• Check to ensure the pressure connection is correct.
• Check for leaks or blockage.
• Check to ensure that blocking valves are fully open.
• Check for entrapped gas in liquid lines or for liquid in gas lines.
• Check to ensure the density of fluid in impulse lines is unchanged.
• Check for sediment in the transmitter process flange.
• Make sure that process fluid has not frozen within the process flange.
Power supply
• Check the output voltage of the power supply at the transmitter. It should be 9 to 30 V dc (9 to
17.5 V dc for FISCO)
Sensor module
• Check for obvious defects, such as a punctured isolating diaphragm or fill fluid loss, and if
replacement is needed, contact the nearest Emerson Service Center.
• Check for proper fill fluid characteristics.
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