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en
7.2.4 Remove transducer from surface
The display will show the last measurement made.
Note: Occasionally, a small film of couplant will be drawn out between the transducer and the surface as
the transducer is removed. When this happens, the gauge may perform a measurement through this
couplant film, resulting in a measurement that is larger or smaller than it should be. This phenomenon is
obvious when one thickness value is observed while the transducer is in place, and another value is
observed after the transducer is removed. If this happens, take the reading again using less couplant.
8 MEASUREMENT OPTIONS
8.1 SCAN MODE
Although the gauge excels at making single point measurements, it is sometimes desirable to examine a
larger region, searching for the thinnest point. The Model CG60 and CG60DL include a feature, called Scan
Mode, which allows it to do just that.
In normal operation, the gauge performs and displays four measurements every second, which is quite
adequate for single measurements. In Scan Mode, however, the gauge performs eight measurements
every second, but does not display them. While the transducer is in contact with the material being
measured, the gauge memorises the lowest measurement it finds. The transducer may be ‘scrubbed’
across a surface, and any brief interruptions in the signal will be ignored. When the transducer loses contact
with the surface for more than a second the gauge will display the lowest value it found.
Note: The Scan mode is not available in echo-echo mode, and has been disabled. If scan mode is selected
while in echo-echo mode, ‘nO’ followed by ‘SCAn’ will be displayed.
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