ISR 12-LO
•
IGAR 12-LO Operating Manual
Troubleshooting
•
41
9
Troubleshooting
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
3.6
).
•
Incorrect focusing of the optics.
⇒
Focus correctly to the measuring distance if necessary change lens (see
3.5
).
•
Emissivity slope set too high.
⇒
Set lower correct emissivity slope corresponding to the material (see
4.6
).
Temperature indication too high
•
Emissivity slope set too low.
⇒
Set lower correct emissivity slope corresponding to the material (see
4.6
).
•
The measurement is influenced by reflections of hot machine parts.
⇒
Use mechanical construction to avoid the influence of the interfering radiation
(sighting tube).
Measuring errors
•
Indicated temperature is immediately 1 °C below beginning of temperature range.
Contamination of the lens or broken fiber.
⇒
Clean lens or control the fiber. Recommendation: use of air purge (see
2.6
).
•
Indicated temperature is immediately 1 °C below beginning of temperature range, 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
4
).
