Emerson Rosemount 644 Reference Manual page 105

Reference Manual
00809-0200-4728
Sensor out of operating limits
Sensor 1 is used here as an example. If Dual Sensors are ordered this alert can apply to
either sensor.
SAT SNSR 1 XX.XXX°C
Potential cause
Sensor readings are outside the sensor's specified range.
Recommended actions
Terminal temperature out of operating limits
SAT TERM DEGRA WARN
Potential cause
The terminal temperature is outside the on-board RTD specified operating range
Recommended actions
Verify the ambient temperature is within the device specified operating range using
the Terminal Temperature Information Button.
6.4.3 Other LCD display messages
LCD is not displaying correctly or at all
Rosemount 644 HART 7 on screen
Potential cause
The display may not be functioning or it may be stuck on Home screen.
Recommended actions
If the meter does not appear to function, ensure the transmitter is configured for the
meter option you desire. The meter will not function if the LCD Display option is set to
Not Used.
Emerson.com/Rosemount
1. Verify the process temperature is within the specified sensor's range. Use the
Sensor Information button to compare with the process temperature.
2. Verify the sensor is properly wired and connected to the terminals.
3. Verify the integrity of the sensor and sensor lead wires. If the sensor is faulty,
repair or replace the sensor.
Troubleshooting
March 2021
105