14
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
All models: Measure a non-reflective area,
or paint or coat a measurable area of the
target to make it non-reflective.
2.2 µm models: When measuring reflective
metals, try changing the emissivity setting
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
Incorrect wire
connections
Check wire colour codes and tags - see
WIRING
Output temperature
scale mismatch
Re-scale input temperature range on
measurement instrument to match sensor.
Use software to check output temperature
range.
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 two years 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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