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and that the transducer is seated flat against the material. If the condition persists, it may be
necessary to:
•
adjust the gain, or
•
select a different transducer (size or frequency) for the material being measured.
The gauge will perform a number of measurements every second when the transducer is in
contact with the surface of the material. The display is updated as each reading is taken.
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. This phenomenon can be seen 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.
9 GATES
(CG100ABDL gauges only)
9.1 INTRODUCTION
Further information on gates may be found on the Elcometer NDT Knowledge Centre on
www.elcometerndt.com
9.2 ADJUSTING THE GATES
The quickest way to adjust the settings of the three gates is directly from the hot menu. Alternatively,
adjust the values using the menus:
1. Press MENU, GT1, GT2 or GT3 menu and then highlight the setting you wish to adjust.
2. Adjust to suit the measurement application.
3. Press OK to set the value and return to the menu screen, or ESC to cancel.
4. Press MEAS to return to the measurement screen.
10 THRUPAINT™ MEASUREMENT TECHNIQUE
10.1 INTRODUCTION
Your gauge is equipped with a through paint measurement mode that uses a multiple echo
technique to allow measurement of the material thickness beneath a coating. This is useful for
checking the material thickness of painted object.
Through paint capability is available in E-E and E-Ev modes, to activate through paint operation
select one of these measurement modes using the "MULTI MODE" key.
Special "High Damped" or "Coating Thickness" transducers are required for this mode to function.
Further
information may be found on the Elcometer NDT Knowledge Centre on
www.elcomterndt.com.
11 MEASUREMENT - OPTIONS
11.1 AUTO FIND (CG100ABDL gauges only)
When using a scan type display, the DELAY and RANGE (or B-START and B-DEPTH) must be set
correctly for the waveform to be shown on the display. If these parameters are set up incorrectly
nothing will be seen. The AUTO FIND function solves this problem by automatically adjusting these
parameters so that the relevant part of the waveform is shown on the screen.
To use the AUTO FIND function place the transducer on the material to obtain a reading, select
MENU/UTIL/AUTO FIND.
18
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