Maintenance and Troubleshooting 11-61
UpDepth data seems erratic over a full depth range.
Sensor transmit/receive surfaces may be dirty.
Sensor may be rotated greater than 15 degrees from
center
(greater than 5 degrees for the AV|Gated
.
Processor board may be faulty.
Clean the sensor transmit/receive surfaces.
Check the sensor connections.
Ensure the sensor is installed as closely as possible to
the 6:00 position in the pipe, silt allowing.
Contact your regional ADS representative.
Replace the monitor if defective.
UpDepth readings are abnormally low.
Sensor transmit/receive surfaces may be covered with
silt.
Sensor may be physically offset in the flow and the
correct physical offset has not been measured and/or
downloaded to the monitor.
-measure physical offset of the sensor.
the site conditions, and relocate the sensor if
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