Elcometer CG60DL Operating Instructions Manual page 24

7.2 PROCEDURE
7.2.1 Apply couplant
For the gauge to work correctly there must be no air gap between the transducer and the surface of the
material to be measured. This is achieved using a couplant.
Before the transducer is placed on the surface, put a small amount of couplant supplied with the gauge on
the surface of the material. Typically a single drop is sufficient.
7.2.2 Place transducer onto surface of material to be measured
Press the transducer wearface into the couplant. Moderate pressure on the top of the transducer using the
thumb or index finger is sufficient; it is only necessary to keep the transducer stationary and the wearface
seated flat against the surface of the material.
7.2.3 Read display
If six or seven bars of the stability indicator are showing, the display will be reading the correct thickness of
the material directly beneath the transducer.
If the stability indicator has fewer than five bars showing, or the numbers on the display seem erratic, check
to make sure that there is an adequate film of couplant beneath the transducer, and that the transducer is
seated flat against the material. If the condition persists, it may be necessary to select a different transducer
(size or frequency) for the material being measured.
The gauge will perform four measurements every second when the transducer is in contact with the surface
of the material. The display is updated as each reading is taken.
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