Required Equipment; Setting Up For Performance Tests And Calibration; Performance Tests - Fluke 65 Calibration Information Manual

Required Equipment

Table 1 shows the equipment required for the performance tests and calibration adjustments.
Equipment
Blackbody Calibration Source

Setting Up for Performance Tests and Calibration

1. Turn on the blackbody. Set it to room temperature and let it stabilize as recommended by the
manufacturer.
2. Let the UUT stabilize in the calibration area environment (25 °C ±3 °C) for a minimum of 20 minutes
before proceeding.
3. Verify that the UUT's laser light is activated. When you press G, A appears in the display and the laser
spot is visible. If not, turn on the laser switch located under the battery hatch.
4. Place the UUT 8" from the front of the blackbody. Center the UUT's thermopile on the blackbody's
aperture. Note that the laser is offset from the thermopile.

Performance Tests

Use the following procedure to verify the performance of the UUT. If the UUT fails any of the tests, it needs
calibration or repair.
To avoid inaccurate readings during performance tests, 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.
1. Set up the UUT and the blackbody as described under "Setting Up for Performance Tests and
Calibration".
2. The emissivity of the blackbody will be different than the emissivity of the UUT. Use the emissivity
error correction table provided for the blackbody to determine the proper set point for each temperature
in the first column of Table 2 at 0.95 emissivity.
3. For each temperature you determined in step 2, do the following:
a. Set the blackbody to the temperature. Let the blackbody stabilize.
b. Use the UUT to measure the temperature of the blackbody. Verify that the UUT reading is within
the limits given.
Table 1. Required Equipment
Minimum Specifications
Temperature range: Ambient to 400 °C
Minimum aperture diameter: 76 mm (3.0 in)
Maximum temperature: ≥ 400 °C
Accuracy: ±0.5 °C to 100 °C
±0.5 % of reading above 100 °C
Caution
Required Equipment
Recommended Model
®
Mikron M315 Blackbody
Calibration Source with 0.95
emissivity error correction table
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