Laser beta lasermike LS8000-3 - Manual (Page 211)

LaserSpeed 8000-3 Instruction Handbook
Appendix E: Troubleshooting Guide
Part No. 93463 / Drawing No. 0921-01561 Page 211 of 221 Revision A (Sep 2007)
Environmental Conditions
(i.e. roll coolant, or coolant
mist, spray and fume) are
adversely affecting the
measurement.
Measured material is
moving in and out of the
measurement region.
window.
1. Inspect the environmental
conditions at the measurement
area.
2. Check the operating conditions of
the compressed air utilities.
3. If using a beam path air purge,
check the clean make-up air duct
for any damage (holes and tears)
that may be drawing in
contaminated make-up air from the
mill environment.
4. Install proper beam path air purge
and/or air wiping (air knife) system
to keep optical beam path and
measured surface clear and clean.
Check material pass line with respect to
the sensor standoff distance and depth-
of-field. Adjust the sensor or control the
material pass line if necessary.
Gradual drop of Quality Factor
(QF) Dirty quick-change window
Low laser power 1. Check the quick change window for
contamination.
2. Clean or exchange quick change
window.
1. Measure laser power if possible and
report value to Beta LaserMike
2. Exchange sensor with spare unit or
swap with another sensor nearby. If
QF value returns to normal operating
value (15), contact Beta LaserMike
for evaluation and repair.
Quality Factor "Hunting." The
quality factor appears unstable or
fluctuating. Such condition might
also report quality factor at a very
low value. Environmental Conditions
(i.e. roll coolant, or coolant
mist, spray and fume) are
adversely affecting the
measurement.
Measured material is 1. Inspect the environmental conditions
at the measurement area.
2. Check the operating conditions of
the compressed air utilities.
3. If using a beam path air purge,
check the clean make-up air duct for
any damage (holes and tears) that
may be drawing in contaminated
make-up air from the mill
environment.
4. Install proper beam path air purge
and/or air wiping (air knife) system to
keep optical beam path and
measured surface clear and clean.
1. Check material pass line with