ADS Environmental Services Model 4000 530017 A0 - Manual (Page 100)

5-14 ADS Model 4000 Manual
Problem Range from ultrasonic depth subsystem is slightly
inconsistent with manually measured range.
Possible
Causes
Electronic or physical offset(s) may be incorrect.
Pipe height may be incorrect.
Possible
Solutions
Verify the electronic and physical offsets, and adjust
offsets if necessary.
Verify the pipe height.
Adjust the electronic offset(s).
Problem Range from ultrasonic depth subsystem is significantly
greater than manually measured range.
Possible
Causes
Electronic or physical offset(s) may be incorrect.
Pipe height may be incorrect.
Ultrasonic depth sensor may not be receiving an echo
because the pulse command parameter is too small.
Sensor may not be level.
Foam or other substance may be absorbing the pulse.
Sensor may be faulty.
Possible
Solutions
Verify the electronic and physical offsets.
Verify the pipe height.
Verify the pulse command parameter is set properly. It
should be 4 for ultrasonic and 8 for Smart Depth.
Make sure the sensor is level and in good condition.
Check the hydraulic conditions in the pipe.
Fire the ultrasonic depth sensor at a shorter distance
onto a hard surface to confirm accuracy.
Contact a trained ADS technician.