ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 335)

Maintenance and Troubleshooting 8-51
Problem Individual ultrasonic depth readings (SDEPTH_3) from
the Surface Combo Sensor are consistently equivalent
to the value obtained from the following equation: Pipe
Height – Physical Offset + 9.99.
Possible
Causes
Sensor may be faulty.
5-volt fuse on regulator may have blown.
Possible
Solutions
Replace the Surface Combo Sensor.
Replace the 5-volt blue fuse on the regulator or return
the monitor to IETG for regulator replacement.
Caution: Do not connect a potentially shorted sensor to
another monitor until confirming that the sensor is
functional (i.e., not shorted) using a voltmeter. A
shorted sensor will blow the 5-volt (blue) replacement
fuse on the regulator of the monitor.
Problem Sensor reports abnormal temperatures.
Possible
Causes
Sensor connection to monitor may be loose.
Temperature sensor may be faulty.
Sensor may be faulty.
Possible
Solutions
Secure sensor connection to monitor if necessary.
Replace the sensor.