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118 Micro Motion
®
Model 2200S Transmitters
Troubleshooting
Note: To check the sensor circuitry, you must remove the transmitter from the sensor. Before
performing this test, ensure that all other applicable diagnostics have been performed. Diagnostic
capabilities of the Model 2200S transmitter have been greatly enhanced, and may provide more useful
information than these tests.
1. Power down the transmitter.
2. If the transmitter is in a hazardous environment, wait five minutes.
3. To access the sensor cable and feedthrough:
a. Referring to Figure 10-1, loosen the four captive user interface cover screws and remove
the transmitter housing cover.
b. Loosen the two captive user interface screws.
c. Gently lift the user interface module, disengaging it from the connector on the transmitter.
d. Disconnect the I/O wires from the I/O terminals (terminals 1–4).
e. Loosen the Warning flap screw, raise the Warning flap, and disconnect the power wires
from the power terminals.
f. Two captive screws (2.5 mm hex head) hold the transmitter in the housing. Loosen the
screws and gently lift the transmitter away from the housing. Allow the transmitter to hang
temporarily.
g. Ensure that the cable is fully plugged in and making a good connection. If it was not,
reseat the cable, reassemble the transmitter and sensor, and check operation.
h. Unplug the cable from the feedthrough by pinching the wings on the sensor connection,
then pulling the connector away from the feedthrough. Set the transmitter aside.
i. Check the cable for any signs of damage.