Checkline FH Series User Manual

Page 23

5.6.3 Incorrect readings through Blocked Target Ball

Error source:

The target ball has got stuck through a bulge, e.g. inside the
sample. It is out off the correct measuring position.

Remedy:

Move the sample in order to release the target ball.

5.6.4 Air gap

Error source:

Due to the shape of sample, an air gap is between

target ball and measuring object. The reading will be

higher than the actual thickness.

Remedy:

If the target ball is too large, use a smaller one. If the

sensor is not in good contact, change measuring

position and use a smaller target ball, if necessary.

5.6.5 Measuring material with ferruginous particles

Ferruginous particles in the material to be measured may lead to erratic readings because the

ferruginous particles may influence the measuring signal. This will lead to readings smaller than

the actual thickness.