ADS Environmental Services Model 3600 530002 A2 - Manual (Page 113)

7-6 ADS 3600 Flow Monitor O&M Manual
Ultrasonic Depth Subsystem
Use the following tips to help resolve problems with the ultrasonic depth subsystem.
Warning: Prior to replacing a sensor, contact an ADS trained technician for
further diagnosis.
Problem The range from the ultrasonic depth subsystem is close but not exact.
Possible Cause The electronic or physical offset may be incorrect. The pipe diameter could be incorrect.
Solution Verify the physical offset and change it if necessary.
Verify the pipe diameter.
If this does not correct the problem, change the electronic offset.
Problem The range from the ultrasonic depth subsystem is much too long.
Possible Cause The ultrasonic depth sensor is not receiving an echo because the pulse command
parameter is too small, the sensor is not level, or foam or another substance is absorbing
the pulse. The sensor may be faulty.
Solution Verify that the pulse command parameter in the QuadraScan software package is
reasonable.
Verify that the sensor is mounted properly, that the sensor is in good condition, and that the
hydraulic conditions are reasonable.
Try firing the ultrasonic depth sensor at a shorter distance onto a hard surface to confirm its
accuracy.
If the problem is still unresolved, contact an ADS trained technician for further information
about replacing the ultrasonic sensor.
Problem The range from the ultrasonic depth subsystem is much too short, but not zero.
Possible Cause The pulse parameters are not adjusted properly or the sensor is dirty.
Solution Clean the sensor.
If the problem is still unresolved, review and change the pulse parameters if necessary.
If the problem is still unresolved, contact an ADS trained technician for further information
about replacing the ultrasonic sensor.
If the sensor replacement does not work, contact the regional ADS Environmental Services,
Inc., office to arrange for technical support.