Troubleshooting: Ultrasonic and Radar Level Transmitters

Did it ever work correctly?

• If the transmitter was just installed and it doesn’t work correctly, that is one thing.

• If the transmitter worked and then randomly stopped working, we might assume that something changed and needs to be remedied.

Some Common Sources of Failure:

• Intermittent or transient power to unit.• Condensation on emitter or transducer.• Physically moved or hit with something.• Spiderwebs.• Weather Conditions (temperature, moisture).• Steam or fog present? • Foam? • Noise.• Wiring.• Programming Change?

What is the problem?

• Does the unit ever have the correct level?

• Does it work intermittently?

• Did anything change with the unit or around the unit?

• How long did it work before the issue arised?

Understanding Signal Return:

Case Studies:

Questions????