Elcometer 456 3 Operating Instructions Manual page 30

Coating thickness gauge, basic models

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Taking test readings

Press YES softkey (see previous section) to take

test readings. This allows the calibration of the

gauge to be tested without contributing to the

statistical calculations.

Figure 30. TEST READINGS screen

CAL softkey returns the gauge to Step 1 of the

calibration adjustment procedure.

OK softkey exits the calibration adjustment

procedure and returns the gauge to the reading

screen.

Other calibration methods

For

the

2-POINT,

SUBSTRATE calibration methods Step 2 requires

ROUGH

and

SPECIAL

readings to be taken on a thin standard value

instead of on an uncoated base.

Figure 31. Step 2 - On thin standard

Repeating the reading will display the average. This

is particularly useful for rough surfaces as it allows

variations in the surface to be accounted for in the

calibration adjustment, therefore improving the

accuracy of the gauge.

First reading

Figure 32. Step 2 - Calibration adjustment on

thin standard

Second reading

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