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MAINTENANCE
Our customer service representatives are available for application assistance, calibration,
repair, and solutions to specific problems. Contact our Service Department before returning
any equipment. In many cases, problems can be solved over the telephone. If the sensor is
not performing as it should, try to match the symptom below to the problem. If the table does
not help, call Calex for further advice.
TROUBLESHOOTING
Symptom
Probable Cause
Solution
No output
No power to sensor
Check power supply and wiring
Inaccurate
measured
temperature
Target too small for
sensor’s field of view
Ensure the sensor’s view is completely filled
by the target. Position the sensor closer to
the target to measure a smaller area.
Ensure the target is at least twice the size of
the given measured spot
Target is a reflective
metal surface
Measure a non-reflective area, or paint or
coat a measurable area of the target to
make it non-reflective
Field of view
obstruction
Remove obstruction; ensure sensor has a
clear view of target
Dust or condensation
on lens
Ensure lens is clean and dry. Clean gently
with a soft lens cloth and water. If problem
recurs, consider using an air purge collar
Output temperature
scale mismatch
Re-scale input temperature range on
measurement instrument to match sensor.
Use software to check output temperature
range.
LENS CLEANING
Keep the lens clean at all times. Any foreign matter on the lens would affect measurement
accuracy. Blow off loose particles (if not using the air purge accessory) with an air ‘puffer’.
GUARANTEE
Calex guarantees each instrument it manufactures to be free from defect in material and
workmanship under normal use and service for the period of one year from the date of
purchase. This guarantee extends only to the original buyer according to Calex terms and
conditions of Sale.
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