Elcometer NDT MTG6 Guia Del Usuario página 22

10 TAKING A READING
10.1 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 17.1 'Transducers' on page en-31 - 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 17.4 'Transducer Adaptor' on page en-35.
3 Select the measurement mode - see Section 4.6 on page en-8.
4 Set the zero point of the transducer - see Section 6 on page en-12.
5 Calibrate the gauge - see Section 8 on page en-14.
6 Prepare the test surface - see Appendix 1 on page en-38.
10.2 TAKING A READING IN STANDARD MODE
1 Apply a small amount of couplant to the test surface.
2 Press the transducer into the couplant, making sure it is flat
against the surface.
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 seated flat against the surface of the material.
3 The display will show a value which is constantly updating. The
gauge will take 4, 8 or 16 readings per second as selected by the
user via Menu/Setup/Reading/Reading Rate.
The stability of the reading is indicated on the stability bar to the right of

the display. A valid reading has a stability of 5 or more. If the stability
indicator has fewer than 5 bars showing or the numbers on the display
seem erratic, make sure 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.
4 Press 'Save' to store the current reading in the gauge or batch
memory.
5 Remove the transducer from the surface.
en-21
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