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5. Push any key on the 714 Calibrator. The display should read:
TYPE J ------ °C
then change to:
TYPE J
This number represents the absolute error of the "CJC" sensor and should be below
1°C.
6. Push any key on the 714 Calibrator. The 714 should reset itself, displaying all
segments momentarily. The display should then change to:
INPUT
where xx.x is some variable number; or OL (overload) may be indicated.
7. Push the key to turn the Calibrator off and remove the Type J thermocouple test
lead.
714 Calibration (V2.0 and Later)
1. On the 714 Calibrator push and hold the
pressing and releasing the key.
2. The display shows CAL for 1 second and then xxx, where xxx is the number the
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, push 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.
3. The calibration will be performed in the following order:
mV OUTPUT
mV INPUT
CJC
mV OUTPUT
1. In mV OUTPUT mode, the unit will display "C-10" for 1 second followed by "–10.000".
The Calibrator is now sourcing mV using the default calibration. The 714 should
source approximately –10.000mV through copper wire.
2. Adjust the source value using the up and down big arrows for gross and small arrows
for fine, until you read -10.000mV.
3. Push
key to go to the next calibration point. "C 75" will be displayed for 1 second
and then "75.000". The 714 should source approximately 75.000mV.
4. Adjust the source value until you read 75.000 mV on the DMM.
5. Push
to complete mV OUTPUT calibration.
mV INPUT
1. In mV INPUT mode, the unit will display "C -10" for 1 second and then will display the
input voltage using the default calibration.
2. Source -10.000 mV from the 5520. The unit should read approximately –10.000 mV
through copper wire.
3. Push
to go to the next calibration point. "C 75" will be displayed for 1 second
and then the input voltage.
0.xx °C
xx.x °C
and
keys, then turn on the 714 by
Process Calibrators
Calibration
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