Model 65
Calibration Information
Table 2. Performance Test Values
Temperature at 0.95 Emissivity
Room temperature
200 °C (392 °F)
300 °C (572 °F)
400 °C (752 °F)
1.Room temperature must be 25 °C ±3 °C (77 °F ±5 °F).
2.Limits given are ±2 % of temperature at 0.95 emissivity.
UUT Reading Limits1, 2
Room temperature ±2 °C ( ±3.6 °F)
196 °C to 204 °C (384.8 °F to 399.2 °F)
294 °C to 306 °C (561.2 °F to 582.8 °F)
392 °C to 408 °C (737.6 °F to 766.4 °F)
Calibration Adjustments
The Model 65 Infrared Thermometer should be calibrated and, if necessary, adjusted annually using the following procedure:
Caution
To avoid inaccurate readings during calibration, expose the UUT to the blackbody heat source only long enough to complete the measurement
(< 15 seconds). Between measurements, move the UUT to an area not affected by the heat source.
Caution
Do not make any calibration adjustments when UUT is in factory calibration mode (refer to Figure 2). Doing so will cause the UUT to give inaccurate readings, and you will need to return the UUT to a Fluke service center for recalibration.
1.Turn on the UUT.
2.Press and hold Fand D until all display segments are lit (about 5 seconds); then also press and hold Eand G until the UUT displays 1_L (about 5 seconds), as shown in Figure 2. To scroll the calibration menu, press F or D.
3.Set up the UUT and the blackbody as described under “Setting Up for Performance Tests and Calibration”.
4.In the
5.Verify that the UUT thermopile is centered on the blackbody target; then use F or D to adjust the UUT reading down or up, respectively, to match the room temperature reading at 0.95 emissitivity.
6.When you have set the UUT reading to room temperature at 0.95 emissivity, press G. The UUT display flashes briefly, then returns to the calibration selection mode.
7.Use the emissivity error correction table to adjust the blackbody for an output of 350 °C at 0.95 emissivity.
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