Thermosight HT
The pyrometer is designed for a storage temperature of -20 … 70°C with non-condensing condi-
tions. Other kind of storing can damage or malfunction the pyrometer.
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Maintenance
The pyrometer does not have any parts which require regular service, only the lens has to be kept
clean. The lens can be cleaned with a soft cloth in combination with alcohol (do not use acid solu-
tions or dilution). It is also possible to use standard cleaning tissue for glasses or camera lenses.
It is recommended to send the pyrometer every two years to CALEX for recalibration.
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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
•
Measuring object is smaller than spot size
⇒
Choose correct measuring distance
•
Measuring object is not always in the measuring spot of the pyrometer (e.g. swinging wire or
pouring stream)
⇒
Use max. value storage
•
Emissivity set too high
⇒
Set lower correct emissivity corresponding to the material
•
Lens contaminated or scratched
⇒
Clean lens carefully
Temperature indication too high
•
Emissivity set too low
⇒
Set lower correct emissivity corresponding to the material
•
The measurement is influenced by reflections of hotter machine parts
⇒
Try to avoid the influence of the interfering radiation or change measuring position
Measuring errors
•
Indicated temperature is decreasing during the use of the pyrometer, contamination of the lens
⇒
Clean lens
•
Air contamination in the sighting path between pyrometer and object
⇒
Change position of the pyrometer with a clean sighting path
•
Strong HF-interferences
⇒
Change position of the pyrometer
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Reference numbers
Pyrometer:
7 611 808
THERMOSIGHT HT
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