Honeywell RM640 Handbook page 119

RM640
Status Error message
type
M M M M Sensor Information Sensor Information Sensor Information Sensor Information
Failed Sensor MCU Test
Failed Sensor Input Test
Bad Spectrum Quality
Peak Lost in Tank Bottom
RC-Oscillator out of bounds
Sensor Reference out of range
XCO out of bounds
Microwave Lock Error
Microwave Sweep Duration Error
Microwave Supply Voltage Error
1 DM = data manager
2 CO = current output
3 This error message is shown if the device is in SIL mode. CO = current output.
34-VF-25-131 iss.1 GLO Feb 2019 US
Description
The sensor electronics does a
continuous self-test procedure.
The test finds a fault.
There is a large change in signal
strength.
The signal was lost near the tank
bottom. Spherical or conical tanks
can cause the device to show this
status message.
The sensor electronics does a
continuous self-test procedure.
The test finds a fault.
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OPERATION
Corrective action
De-energize and then energize the
device again.
If the message is shown again, tell
the supplier.
Make sure that the device
installation agrees with the data in
the handbook.
If the message is shown again, we
recommend that you attach a
larger antenna to the device.
The device will measure the level
of tank contents if you fill the tank.
If the message is shown, tell the
supplier.
De-energize and then energize the
device again.
If the message is shown again, tell
the supplier.
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