DeFelsko PosiTector 100 v.4.0 - Manual (Page 38)

Page 38 100 Series
Troubleshooting
Gage does not turn on
•
make sure each battery’s + and – terminals are
positioned properly and that the batteries are
fresh Alkaline ‘C’ cells
•
make sure the probe connector is fully pushed in
•
try adjusting the screen contrast
•
press the RESET button
The Gage powers up but
fails to stay on Replace batteries. If problem persists return Gage for
service
The screen appears too
light or too dark.
•
adjust the contrast
•
adjust your viewing angle
•
adjust the surrounding lighting
•
make sure the Gage is not too hot or too cold. It is
designed to be used in temperatures between 0
and
+
40C.
Gage does not yield
accurate or consistent
results See the Calibration and Gate sections to ensure that
Gage is properly configured for your application.
Check the Gage on traceable standards.
Batteries don’t last as
long as they used to. The more you use the communication port for
downloading, the faster the batteries will loose power.
Extensive use of the menu system with the 5 LCD
buttons will also use more power.
Measurements are much
lower than expected Gage may be measuring surface roughness. Raise the
value of Gate A.
Measurements are much
higher than expected Gage may either "doubling" or measuring both
coating and substrate. Lower the value of Gate B.
Gate A and B cannot be
extended to maximum The user may have optimized the Gage and changed
the sound velocity constants. See the Range and
Resolution Graph on pg.41 for range of each probe.
Readings are not
repeatable (fluctuate) It is not unusual to get a variety of readings at the
same spot with any coating thickness gage particularly
if the substrate or coating surface is not completely
smooth. The Model 100 is also affected by surface
roughness. However fluctuations in the amount of
pressure applied and the amount of couplant used are
also a factor when measuring very thin coatings. As
long as these variations are within the tolerances of
the Gage there is no cause for concern. If you are
having problems, provide application details.