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71X Series
Calibration Manual
Thermocouple Block Calibration
1. Connect the Type-J thermocouple test lead from the TC jack on the Fluke 5520A to
2. Set the Fluke 5520A to source Type-J thermocouple at 0.0 °C. Press O.
3. Press any key on the 714 Calibrator. The display will very quickly flash:
4. Wait for three to five minutes. The longer the waiting period, the more accurate the
5. Press any key on the 714 Calibrator. The display should read:
6. Press any key on the 714 Calibrator. The 714 should reset itself, displaying all
7. Press the O key to turn the calibrator off and remove the Type J thermocouple test
714 Calibration (V2.0 and Later)
1. On the 714 Calibrator press and hold the
2. The display shows CAL for 1 second and then xxx, where xxx is the number the
3. The calibration will be performed in the following order:
54
OUTPUT ------ mV
After a few seconds, the display should change to:
0.0 °C
TYPE J
the TC jack on the 714 Calibrator, observing correct polarity.
Type-J thermocouple wire (not copper) must be used.
TYPE J ------ °C
then read:
TYPE J HOLD °C
Thermo-block calibration will be.
TYPE J ------ °C
then change to:
0.xx °C
TYPE J
This number represents the absolute error of the "CJC" sensor and should be below
1°C.
segments momentarily. The display should then change to:
xx.x °C
INPUT
where xx.x is some variable number; or OL (overload) may be indicated.
lead.
pressing and releasing the O key.
times the unit has been through a calibration adjustment. When the two keys are
released, PASS is displayed. One second later a zero is displayed for the most
significant of the three digit password. Use the two small arrows to change the
number. After setting each digit, press the °C/°F key. If the password entry was
correct, the 714 will go into calibration. If the password was wrong, the 714 will go
into normal operation mode. The password is 417.
mV OUTPUT
mV INPUT
CJC
Note
T
and
C
keys, then turn on the 714 by
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