Elcometer 205 Operating Instructions Manual page 19

4. Press the transducer against the probe-disc, making sure that the transducer is flat against the surface
(Figure 5). The display should show some thickness value, and nearly all the bars of the stability
indicator should be illuminated.
5. While the transducer is firmly coupled to the probe-disc, press the PRB-0 key on the keypad. The
gauge will display 'Prb0' while it is calculating the zero point.
6. Remove the transducer from the probe-disc.
When setting the zero point, the gauge will always use the sound-velocity value of the built-in probe-disc,
even if some other velocity value has been entered for making measurements.
Although the gauge will remember the last zero point, it is generally a good idea to set the zero point
whenever the gauge is switched on, as well as any time a different transducer is used. This will ensure that
the zero point of the instrument is always correct.
Elcometer 206
Elcometer 208
Figure 5. Transducer pressed against probe-disc
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