M4-CYG3-M-ENG_Iss2.doc
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13. Troubleshooting
The Gauge will not Switch On
• Are the batteries dead?
• Check the batteries are inserted correctly.
Difficulty obtaining a Reading
If there is 1 single flashing bar on the display - this means the Gauge is
not receiving any echoes:
• Check that the Probe-lead is properly connected to both Probe and
Gauge.
• Check the condition of the lead, replace if necessary.
If there is mostly 1 fixed bar plus 1 flashing bar this means that the
Gauge is having difficulty obtaining more than one echo:
• Check the Probe and its membrane are properly assembled.
If there are up to 3 fixed bars plus 1 flashing bar, but never any reading
- this means the Gauge is receiving unrelated echoes from more than
one reflector:
• On heavily corroded areas this is often a problem, note this as a
problem area and try taking measurements in adjacent areas of
the same material.
• Check the Gauge and Probe together on a test block, if there is
still no reading the Gauge may require servicing.
If Readings are Erratic or Unstable
• Check that the Probe-lead is properly connected to both Probe and
Gauge.
• Check that the Probe and its membrane are correctly assembled
with sufficient couplant between the probe face and membrane.
• Check the Probe-frequency is suitable for the probable minimum
thickness of the material being measured. Probe frequencies too
low cause doubling and tripling of the actual thickness.
• Check the gauge is not in Deep Coat mode.
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