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Configuration and Use Manual 129
Troubleshooting
Measurement Performance DefaultsTroubleshootingCompensation
With the DMM set to its highest range, there should be infinite resistance on each lead. If there
is any resistance at all, there is a short to case or a short between pins. See Table 11-9 for
possible causes and solutions. If the problem is not resolved, contact Micro Motion (see
Section 11.3).
To return to normal operation:
1. Follow appropriate procedures to ensure that reconnecting the transmitter does not interfere
with existing measurement and control loops.
2. Reach inside the transmitter housing and install the transmitter’s sensor connection onto the
feedthrough:
a. Rotate the connector until it engages the pins.
b. Push down until the connector shoulder is flush with the feedthrough notch.
c. Replace the snap clip by sliding the clip tab over the connector shoulder (see instruction
label).
3. Replace the transmitter in the transmitter housing, and tighten the screws.
4. Plug the user interface module onto the transmitter. There are four possible positions; select
the position that is most convenient.
5. Tighten the user interface screws.
6. Replace the transmitter housing cover on the user interface module, and tighten the screws.
7. Reinsert the DeviceNet cable into the DeviceNet connector on the transmitter.
Table 11-9 Sensor and cable short to case causes and remedies
Cause Possible remedy
Moisture inside the transmitter housing • Make sure that the transmitter housing is dry and no corrosion is
present.
Liquid or moisture inside the sensor case • Contact Micro Motion. See Section 11.3.
Internally shorted feedthrough (sealed passage
for wiring from sensor to transmitter)
• Contact Micro Motion. See Section 11.3.
Faulty cable connecting sensor to transmitter • Visually inspect the cable for damage. To replace cable, contact
Micro Motion. See Section 11.3.