LumaSense Technologies IS 210 - Handbuch (Seite 12)

IMPAC pyrometers IS 210 · IGA 210
12
10.2 Cleaning
The pyrometer has no internal parts, which have to be serviced. The lens can be cleaned with
compressed air, which is dry and free of oil. If the lens requires more thorough cleaning, use a
soft, dry cloth such as that used to clean camera lenses.
Caution: Do not clean or touch the lens with acids or solvents!
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 5)
 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 (see 4)
 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