16
Battery change
When the battery needs to be replaced, a
low bat
warning is shown
in the display for a few seconds when the instrument is switched
on.
Unscrew the front plate of the battery container and replace the 9-
Volt (size PP3) battery. Before putting back the front plate, check if
the rubber seal around the battery container is still on its place and
in good condition. Tighten the two screws with medium force.
8.1 Accuracy and calibration
A little wear on the two probes doesn’t influence the
± 0.01 mm accuracy within 0.50 to 5.00 mm range of a
Feltest Caliper Profiler.
More extensive wear (flattened surfaces of the probes)
will result in too high caliper values:
• when the instrument is not kept exactly perpendicular to
the fabric or felt (misalignment),
• because the worn upper probe will be pushed a little less
into press felts
8.2 Service
When the accuracy seems out of specification, the instrument
needs to be send to
Feltest Equipment BV for service and re-calibration.
Please add a problem description in English or German language
and send it properly packed and insured to Feltest Equipment BV.
The actual address can be found on www.feltest.com.