
Page 220 HydroRanger 200 – INSTRUCTION MANUAL 7ML19981FC01
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Appendix C: Troubleshooting
Determine the Noise Source
Disconnect the transducer from the HydroRanger 200. If the measured noise is below 5
dB, then continue here. If the measured noise is above 5 dB go to Non-Transducer Noise
Sources below.
1. Connect only the shield wire of the transducer to the HydroRanger 200. If the
measured noise is below 5 dB, continue with the next step. If the noise is above 5
dB, go to Common Wiring Problems.
2. Connect the white and black transducer wires to the HydroRanger 200. Record the
average noise.
3. Remove the positive wire of the transducer. Record the average noise.
4. Re-connect the positive wire and remove the negative wire. Record the average
noise.
Using the table below, determine the appropriate next step. The terms higher, lower and
unchanged refer to the noise recorded in the previous steps.
These are guidelines only. If the suggested solution does not solve the problem, try the
other options also.
Acoustical Noise
To confirm that the problem is acoustical, place several layers of cardboard over the face
of the transducer. If the noise is reduced, the noise is definitely acoustical.
Non-Transducer Noise Sources
Remove all input and output cables from the HydroRanger 200 individually while
monitoring the noise. If removing a cable reduces the noise, that cable may be picking up
noise from adjacent electrical equipment. Check that low voltage cables are not being
run adjacent to high voltage cables or near to electrical noise generators such as variable
speed drives.
- removed + removed Go to:
noise
higher
higher Reducing Electrical Noise
unchanged Common Wiring Problems
lower Reducing Acoustical Noise
unchanged
higher Reducing Electrical Noise
unchanged Contact Siemens Milltronics
lower Reducing Acoustical Noise
lower
higher Common Wiring Problems
unchanged Common Wiring Problems
lower Reducing Acoustical Noise
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