Trouble Shooting - LumaSense Technologies mpac IN 140/5-L Betriebsanleitung

IMPAC pyrometers IN 140/5 · IN 140/5-H · IN 140/5-L
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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 (see 6)
•
Measuring object smaller than spot size
⇒ check measuring distance, smallest spot size is at nominal measuring distance (see 7)
•
Measuring object is not always in the measuring spot of the pyrometer
⇒ Use max. value storage (see 9.3).
•
Emissivity set too high
⇒ Set lower correct emissivity corresponding to the material (see 9.1)
•
Lens contaminated
⇒ Clean lens carefully (see 12.2)
Temperature indication too high
•
Emissivity set too low
⇒ Set lower correct emissivity corresponding to the material (see 9.1)
•
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 12.2, 5.1)
•
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
•
Air contamination in the sighting path between pyrometer and object
⇒ Change position of the pyrometer with a clean sighting path (if necessary use a ratio pyrometer)
•
HF-interferences
⇒ Correct the connection of the cable shield (see 4)
•
Instrument overheated
⇒ Use cooling jacket with air or water cooling (see 5.1)
•
Temperature Indication is fluctuating, probably caused by changing emissivity
⇒ Wrong pyrometer type, use of ratio pyrometer recommended
Laser targeting light
•
Laser targeting light fails
⇒ Instruments max. temperature of 50°C is exceeded. Use cooling jacket (see 5.1)
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