1. Scope
This service manual applies to 2266-20 Laser Temp-Gun™ Thermometer.
1.0
EQUIPMENT USE:
1.1 Below is Recommended Reference Thermometer Traceable to NIST:
Manufacturer
Model No.
Range
Accuracy
Hart Scientific
1502A
-200°C to 962°C
±O.OO6°C accuracy at 0°C
1.2 Below are recommended IR Black Bodies Sources
/
TC Calibrator:
Manufacturer
Model No.
Range
Accuracy
Emissivity
Target Size
Hart Scientific
9132
50°C~ +500°C
±0.5°C accuracy at
100°C
0.95
(±0.02)
2.25in
(57mm)
Hart Scientific
9133
-35°C~ +150°C
±0.0°C accuracy at
100°C
0.95
(±0.02)
2.0in
(57mm)
Hart Scientific
4181
35°C~ +500°C
±0.5°C accuracy at
100°C
0.90~0.95
(±0.02)
6.0in
(152mm)
Fluke TC
724/714
-200°C~ +1370°C
±0.5°C accuracy at
100°C
NA
NA)
1.3 Operate only the test equipments within its calibration period.
2.0
TESTING CONDITION AND INTERFERENCE:
2.1 Calibration and verification are performed at an ambient temperature of 23°C - 25'C and ambient
relative humidity 40%
+1-
10% in a controlled room. Each thermometer should be uniquely
identified as to the room
andlor
area in which it is used or tested.
2.2 If the meter is exposed to significant changes in ambient temperature (hot to cold or cold to hot)
allow 30 minutes for the unit to acclimate with room temperature before taking any temperature
reading or calibration.
2.3 Operate the unit under test (UUT) and the reference thermometer within its specified range.
2.4 Calibration can be verified using a certified NIST traceable standard thermometer. Recalibration
must be performed in similar environment conditions as it was calibrated to get similar results.
2.5 Strong electromechanical radiation or static discharges can cause reading errors if situated near
the meter.
2.6 The object size under test should be larger than the spot size calculated by the field of view
diagram of the meter.
3.0
FIELD CALIBRATION PROCEDURE:
3.1
IR
Software Calibration Check using Black Body Source (Calibrator 9133 or 4181)
3.1.1 Condition the unit to be calibrated in a stable environment as described in 3.1 for at least
30 minutes.
5
