910-198E
8/19/03
Page 9-4
Model 8500
“Do Calibration” during Quick Calibration (QCAL)
This is not an error message, but a warning. If the target ball has been
removed from the tip, and this message appears, it indicates that the Ball
Off probe signal has drifted farther than what is typical between
QCALs. This may be due to a large change in temperature, probe
orientation, or ambient magnetic field. Be certain to remove any target
ball or magnetic material, orient the probe as it will be used, and press
QCAL again. If this message persists, it will be necessary to perform a
new calibration.
“No Probe, Please Connect Probe”
When a probe is connected to the Magna-Mike 8500 and this error
message appears, a failure in the identification circuit for the probe
occurred. This problem is typically caused by a connection failure in
the probe cable. Verify that the cable is connected to both the gage
and the probe, and that the cable is not damaged. Replace the cable, if
a substitute is available.
Thickness Readings Drifting Beyond Accuracy Specifications
Verify that a QCAL is being performed at least every half hour. If
QCAL is used excessively to preserve accuracy (i.e. between each
reading), then there may be an electrical problem in the probe or
probe cable. Please note that drift due to temperature and probe
orientation is substantially worse near the upper limit of any target
ball’s range.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
