Taking A Reading - Elcometer 204 User Manual

5 SETTING THE ZERO POINT (continued)
To set the zero point:
1 Plug the transducer into the gauge
ensuring that the connector is fully
engaged.
The wearface of the transducer should

be clean and free of any debris.
2 Press the On/Off button to switch the
gauge on.
3 Press Menu/Calibration/Zero Set and
apply couplant to the zero disk.
4 When prompted, press the
transducer on to the zero disk,
making sure it is flat against the
surface.
The display will show a thickness value

which is constantly updating. 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.
5 Remove the transducer from the zero
disk. The last reading is held on
screen. If not representative, repeat
Step 4.
Excessive use of couplant can result in a

distorted reading when the transducer is
removed from the surface.
6 Press 'Zero' to set the zero point.

6 TAKING A READING

6.1 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 the gauge - see Section 10.1 'Transducers' on page en-8 - 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 10.4 'Transducer Adaptor' on page en-11.
3 Set the zero point of the transducer - see Section 5 on page en-5.
4 Prepare the test surface - see Appendix 1 on page en-14.
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