RayTek MI Miniature Infrared Sensor - Manual (Page 68)

Maintenance
60 MI
9 Maintenance
Our sales representatives and customer service are always at your
disposal for questions regarding application assistance, calibration,
repair, and solutions to specific problems. Please contact your local
sales representative if you need assistance. In many cases, problems
can be solved over the telephone. If you need to return equipment for
servicing, calibration, or repair, please contact our Service
Department before shipping. Phone numbers are listed at the
beginning of this document.
9.1 Troubleshooting Minor Problems
Symptom Probable Cause Solution
No output No power to instrument Check the power supply
Erroneous
temperature
Faulty sensor cable Verify cable continuity
Erroneous
temperature
Field of view obstruction Remove the obstruction
Erroneous
temperature
Window lens Clean the lens
Erroneous
temperature
Wrong emissivity Correct the setting
Temperature
fluctuates
Wrong signal processing
Correct Peak/Valley Hold or Average
settings
Temperature
fluctuates
No ground for the head Check wiring / grounding
Table 6: Troubleshooting