Table 2-1: Troubleshooting
(continued)
Error
Recommended action(s)
Flow temperature is outside the
alarm limits
•
Startup Issues:
—
Verify that there is voltage to the temperature sensor
from either the meter's power supply board or from an
external power supply.
—
If using an analog temperature device, verify that the
temperature sensor is properly wired to the connector.
—
Verify the input is properly configured for your
temperature input.
—
If using a flow computer to write temperature to the
meter, verify that it is properly writing to fixed flow
temperature in the proper units.
•
Run Time Issues:
—
If using an analog temperature device and input reading
is 0, check if
IsAI2Avail
is equal to 1 in the Meter
Information dialog in MeterLink. If it is not 1, either the
I/O Board has been removed or is damaged. Reinstall or
replace the CPU Module if this value is 0.
—
If using an analog temperature device, verify that the
pressure sensor is working properly.
—
If using an analog temperature device, recheck wiring
and switch settings.
—
If a flow computer is writing values to the fixed flow
temperature, verify that the flow computer is still
writing valid values without Modbus write errors.
—
Re-verify the temperature input settings are correct.
Maintenance and Troubleshooting Manual
Troubleshooting
00809-0100-3812
April 2022
Rosemount 3812 Liquid Ultrasonic Flow Meter
21
