Introduction
This procedure covers the following topics relating to the calibration of the Fluke 80T-IR/E Infrared Temperature Probe, hereafter referred to as the UUT (Unit Under Test):
∙Service Information
∙Required Test Equipment
∙Calibration Verification
Service
To obtain Service Information in the U.S.A. call 1- 888-893-5853. Outside the U.S.A., contact your nearest Fluke Service Center.
Recommended Equipment
Table 1 lists the equipment required to perform the calibration verification procedure. Refer to Figure 1 for equipment configuration.
Table 1. Calibration Equipment
Instrument Type
Blackbody (-20 – 150 °C) 1 Required Accuracy = +/- 0.75 % W/Cert. @ 0.95 Emissivity
Blackbody (100-650°C) 1 Required Accuracy = +/- 0.75 % W/Cert. @ 0.95 Emissivity
DMM 0.1% Basic Accuracy
Recommended
Model
Mikron M340
Mikron M305X
Fluke 87
1. May substitute less accurate blackbody if using in conjunction with transfer standard of equivalent accuracy, i.e.; Raytek PM3-DCI
Initial Setup
Each of the measurements listed in the following procedure assumes that the temperature of the UUT has stabilized in a test environment with an ambient
PN 650900
April 2000
®
80T-IR/E
Infrared Temperature Probe
Calibration Procedure
temperature of 18 - 28°C and relative humidity of less than 95%. Accuracy figures are valid for a period of one year.
1.With the UUT powered on, check that the battery voltage is at least 7.0 V. Replace the battery if necessary.
2.Verify that the UUT is in the °F mode.
3.Power up the UUT and allow it to stabilize for five minutes.
4.Connect the output of the UUT to the VΩ 
and COM input of the DMM.
Calibration Verification
To verify calibration of the 80T-IR/E, complete the following performance test. If your instrument fails to pass any performance specifications, return it to the Fluke Factory or Service Center for repair.
1.Adjust the setpoint of the Blackbody to output each of the temperatures in Table 2 at 0.95 emissivity.
2.Set the DMM to the 3.000 V dc range.
Note
To avoid inaccuracy, only expose the UUT to the heat source long enough to complete the measurement (<10 sec). In between measurements move the UUT to an environment not affected by the heat source.
3.Place the UUT aperature three inches from the center and perpendicular to both axes of the Blackbody plate.
4.Record the reading displayed on the DMM.
5.The reading in step 4 must be within 3% or 5° F (whichever is greater) of the Blackbody output or transfer standard measurement at 0.95 emissivity in step 1.
6.Repeat steps 1 through 5 for the remaining verification points called out in Table 2.
©1998 Fluke Corporation. All rights reserved. Printed in U.S.A. |
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