Advertisement
8024B
4-41.
Temperature Test
WARNING
DO
NOT
PERFORM
THIS
PROCEDURE
IF THE
TIP
OF
THE
THEROMOCOUPLE
ACCESSORY
HAS
BEEN
EXPOSED
TO TOXIC
MATERIALS. INSTEAD USE THE ALTERNATE PROCEDURE DESCRIBED
IN THE FOLLOWING CALIBRATION ADJUSTMENTS PROCEDURE.
4-42.
The following procedure takes advantage of the inherent stability of human body
temperature to verify proper operation of the °C temperature function. If there is any
doubt about this procedure, if the thermocouple tip has been exposed to toxic materials,
or if extremeaccuracy of measurement is desired, use (as a reference) the lag bath described
in the °C Adjustment procedure in the following Calibration portion of this section.
1.
Depress the TEMP °C range switch and release the 1/S switch on the UUT.
2.
Connect the John Fluke thermocouple accessory to the UUT.
3.
Wipe the tip of the thermocouple accessory clean and place the tip between
your thumb and index finger until the UUT display readings stabilize.
NOTE
Normal body temperature of humans is 37°C (98.6° F).
4.
Verify that the UUT display is between 34 and 39°C.
4-43.
CALIBRATION ADJUSTMENTS
4-44,
Under normal operating conditions the 8024B should be calibrated once every two
years to maintain the specifications given in Section | of this manual. If your 8024B has
been repaired or if your 8024B has failed any of the Performance Tests, immediate.
calibration
is
indicated.
Test
equipment
needed
for
the
calibra-
tion adjustment is listed in Table 4-1. If the test equipment is not available, your nearest
John Fluke Service Center will be glad to help. A list of these centers is given in Section 5 of
this manual.
For verification, complete the Performance
Tests after the calibration
adjustments are made.
The 8024B beingcalibrated will be referred to as the UUT (Unit
Under Test).
4-45.
Use the following procedure to perform the calibration adjustments:
1.
Allow the UUT to stabilize for at least 30 minutes at an ambient temperature of
21°C to 25°C (70°F to 77°F).
2.
Complete the calibration access procedure presented earlier in this section.
3.
Select the DC V function, 200 mV range on the UUT.
4.
Connect the equipment as shown in Figure 4-3.
5.
Program the DMM
Calibrator for a UUT input of +190.0 mV dc.
Advertisement
