Table of Contents
Advertisement
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
(CG70ABDL only)
9.1 INTRODUCTION
The Model CG70ABDL is equipped with gates which control the time measurement process
allowing you to measure a specific region on or between waveforms.
Further information on gates may be found on the Elcometer NDT Knowledge Centre on
www.elcometerndt.com.
9.2 ADJUSTING THE GATES
In P-E GT mode one gate is available and may be adjusted from the hot menu. In E-E mode both
gates may be adjusted from the hot menu or alternatively select MENU/GATE.
10 THRUPAINT™ MEASUREMENT TECHNIQUE
10.1 INTRODUCTION
Your gauge is equipped with a ThruPaint
technique to allow measurement of the material thickness beneath a coating. This is useful for
checking the material thickness of painted object.
™
ThruPaint
capability is available in E-E mode, to activate ThruPaint
measurement mode 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.elcometerndt.com.
11 MEASUREMENT - OPTIONS
11.1 AUTO FIND (CG70ABDL only)
When using a scan type display, the DELAY and WIDTH (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.
11.2 HIGH SPEED SCAN
Although your gauge excels at making single point measurements, it is sometimes desirable to
examine a larger region, searching for the thinnest point. The gauge includes a feature, called Scan
Mode, which allows it to do just that.
™
measurement mode that uses a multiple echo
™
operation select this
14
Advertisement
Table of Contents
