Fluke 716 - Thermocouple Source Verification; Keypad Test

71X Series
Calibration Manual
34
Thermocouple Source Verification
1. Set the Fluke 8508A to VDC and 200 mV range. Connect the two-wire copper test
lead from the TC jack on the 714 Calibrator to the INPUT jacks of the Fluke 8508A.
2. Press the
I key on the 714 Calibrator to indicate:
OUPUT 0.00 mV
3. On the 714, press the large [ and { scroll keys to source the voltages in Table
47 while verifying the readings on the Fluke 8508A.
Table 47. 714 Thermocouple Source Verification (mA)
Fluke 714 Fluke 8508A
-10.00 mV -10.028 to -9.972 mV
30.00 mV 29.972 to 30.028 mV
75.00 mV 74.972 to 75.028 mV
4. Press the T key on the 714 Calibrator to TYPE J and disconnect the copper wire
test lead.
5. Connect the Type J thermocouple test lead from the Fluke 5520A TC jack to the TC
jack on the 714 Calibrator, observing correct polarity.
6. Set the Fluke 5520A to U with 'Type J' input. On the 714, press the large
[ and
{ scroll keys to source the temperatures in Table 48 while verifying the readings
on the 5520A:
Table 48. 714 Thermocouple Source Verification (Temperature)
Fluke 714 Fluke 5520A
0.0 °C -0.70 °C to +0.70 °C
-200.0 °C -200.94 °C to -199.06 °C
1200 °C 1199.33 °C to 1200.67 °C
Keypad Test
1. On the 714 Calibrator, press the large
{ scroll key to 800.0 °C.
2. Press and hold the small
] scroll key, verifying that the numbers scrolling on the
display change in 0.1 increments, then change in 1.0 increments, then change in 10.0
increments.
3. Press and hold the
} scroll key, verifying that the numbers scrolling on the display
change in 0.1 decrements, then change in 1.0 decrements, then change in 10.0
decrements.
4. Scroll to 800.0 °C.
5. Press the
C key on the 714 Calibrator. The display should change to:
OUTPUT 1472.0 °F
6. Disconnect the Type J test lead from the 714 Calibrator and press the O key to turn
the calibrator off.