Cygnus DIVE Operating Manual
Page 39 of 117
Taking a Thickness Measurement
Taking a Thickness Measurement
Remove any marine growth, loose
rust or loose coatings and brush the
test area clean.
When measuring underwater there is
no need to use a couplant - the water
itself will act as a couplant.
When measuring in air apply some
couplant gel to the test surface.
Place the probe-face on the prepared
test surface and make firm contact
applying gentle pressure.
The gauge will display a thickness
measurement or an indication of Echo
Strength if no valid measurement has
been found.
Measuring Small Pipe with Twin Crystal Probes
Twin Crystal probes must be orientated correctly when
measuring pipes under 75mm (3”) diameter, see Measuring
Small Diameter Pipe & Tubes on page 30.
Signal Strength Indication
The vertical signal bars on the left side of the display show the
relative strength of the received ultrasound signal - the more bars
shown, the stronger the received signal.
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