Taking A Reading In Standard Mode; Before You Start - Elcometer 307 Gebrauchsanleitung

9 TAKING A READING

9.1 BEFORE YOU START

1 Press the On/Off button to switch the gauge on.
2 Connect a transducer to the gauge.
All single element delay line transducers which can be connected directly to

the base of the gauge - see Section 15.1 'Transducers' on page en-25 - are
'intelligent' transducers and will be identified automatically by the gauge. If
using other Elcometer 'non-intelligent' single element delay line transducers
or other manufacturers' transducers, a transducer adaptor is required - see
Section 15.5 'Transducer Adaptor' on page en-28.
3 Select the measurement mode - see Section 4.6 on page en-7.
If using Plastic Mode (PLAS), a graphite delay line must be fitted to the

transducer as standard acrylic delay lines (supplied with each transducer)
are not suitable. Graphite delay lines are available to purchase as optional
accessories - see Section 15.2 'Delay Lines' on page en-26.
4 Calibrate the gauge - see Section 7 on page en-12.
5 Prepare the test surface - see Appendix 1 on page en-31.

9.2 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 o r
frequency) for the material being measured.
4 Press 'Save' to store the current reading in the gauge or batch
memory and remove the transducer from the surface.
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