IMPAC pyrometers IN 210 · IN 210/4 · IN 210/5
14
11
Trouble shooting
Before sending the pyrometer for repair, try to find the error and to solve the problem with the
help of the following list.
Temperature indication too low
Incorrect alignment of the pyrometer to the object
New correct alignment to achieve the max. temperature signal
Measuring object smaller than spot size
check measuring distance, smallest spot size is at nominal measuring distance (see
6
)
Emissivity set too high
Set lower correct emissivity corresponding to the material (see
7.2
)
Lens
contaminated
Clean lens carefully (see
10.2
)
Temperature indication too high
Emissivity set too low
Set higher correct emissivity corresponding to the material (see
7.2
)
The measurement is influenced by reflections of hot machine parts
Use mechanical construction to avoid the influence of the interfering radiation
Measuring errors
Indicated temperature is decreasing during the use of the pyrometer, contamination of the lens
Clean lens. Recommendation: use of air purge
Indicated temperature is decreasing during the use of the pyrometer, although the air
purge unit is used. Probably compressed air is not clean or air failed
Clean the lens and use clean, dry and oil free compressed air
HF-interferences
Correct the connection of the cable shield (see
3
)
Instrument
overheated
Use cooling jacket with air or water cooling
