Taking A Reading; Before You Start - Elcometer MTG2 Guia Del Usuario

7 CALIBRATING YOUR GAUGE - MTG4 (continued)
7.2 USING MATERIAL CALIBRATION
The gauge is calibrated using the known sound-velocity of a material
as selected by the user from a pre-defined list stored in the gauge.
This calibration method is useful if uncoated sample test pieces of
known thicknesses are not available.
1 Press the On/Off button to switch the gauge on.
2 Press Menu/Calibration/Cal Method and select 'Material'.
If 'Material' is already selected - the calibration method currently selected

is indicated by the icon to the right of the display - simply press
Menu/Calibration/Calibrate.

3 Use the
by 'Select'.
Pressing 'Escape' at any time will exit the calibration procedure without

calibrating the gauge.
The sound-velocity of the material selected will be displayed to the right

of the display, below the calibration method icon.
7.3 USING FACTORY CALIBRATION
Press Menu/Calibration/Factory Calibration to restore the default
factory calibration setting of the standard sound-velocity for steel,
5920m/s (approximately 0.233in/µs).

8 TAKING A READING

8.1 BEFORE YOU START

1 Press the On/Off button to switch the gauge on.
2 Connect a transducer to the gauge.
All dual element transducers which can be connected directly to the base

of an MTG gauge - see Section 12.1 'Transducers' on page en-11 - are
'intelligent' transducers and will be identified automatically by the gauge.
If using other Elcometer 'non-intelligent', dual element transducers or
other manufacturers' transducers, a transducer adaptor is required - see
Section 12.4 'Transducer Adaptor' on page en-15.
3 Select the measurement mode (MTG4) - see Section 4.5 on
page en-5.
4 Set the zero point of the transducer - see Section 5 on page
en-6.
5 Calibrate the gauge (MTG4) - see Section 7 on page en-8.
6 Prepare the test surface - see Appendix 1 on page en-17.
en-9
R
softkeys to highlight the required material followed
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