719 Calibration (V1.0); Ma Measure - Fluke 71 Series Calibration Manual

Pressure Measure
The 718Ex Pressure Calibrator has built-in temperature compensation. Instruments being
calibrated should be in a stable temperature environment for several minutes before
calibration. Calibration facilities should be maintained near 23 °C nominal.
Re-calibration (re-characterization) is performed in terms of 'PSI' pressure units. Inputs
using other pressure units (ie. kPa and bar) must be mathematically converted.
1. Remove two-wire test lead from the 718Ex Calibrator and carefully attach the
pressure fitting of the deadweight tester to the pressure jack on the 718Ex Calibrator.
The use of TEFLON tape at the pressure fittings strengthens the seal.
2. The lower display shows rAnGE. This is an indication to choose the correct model of
the 718Ex Calibrator. The appropriate range for the 718Ex 30G is 30 and 100 for the
718Ex 100G. Choose the correct range.
3. The upper display shows 30, which is the default pressure range. Pressing
changes the sensor range to 100 PSI, pressing
4. After selecting the proper range, press
5. Vent the system to ambient air to ensure 0.00 PSI.
6. The lower display indicates C 0 PSI and the upper display indicates the current
reading. When the unit is vented (step 5) the upper display will read 0.00 +/-
approximately 10 % of full scale. When
the next pressure to apply. Apply the requested pressure that shows on the lower
display and when the upper reading is stable, press
appears on the display.
7. The CHEC mode allows for a quick check of the calibration constants that have just
been stored. Changes to the applied pressure reflect on the display. Press
continue. The unit will then reset power.
8. The 718Ex Calibrator is now out of the CAL mode and into the normal mode of
operation. Carefully vent all pressure, press O to turn the calibrator off, and
disconnect all pressure fittings.

719 Calibration (V1.0)

mA Measure

1. Hold down both Zand Con the 719 Pressure Calibrator. Press and release O.
2. The display shows CAL xxx, as long as Zand Care pressed. Where xxx is a
number, indicating the number of times the 719 has been through the calibration
adjustment. When Zand Care released, PASS is displayed.
3. A password is required to enter calibration mode. The password is 917. Enter the
most significant digit first. The password appears below PASS. Use U to increase
the displayed number, V to decrease it. When the required digit appears, press C to
proceed to the next digit, or the password check. If the password entry was correct,
the 719 will go to the CAL mode. If the password is incorrect, BAD PASS shows on
the display and the 719 returns to the normal operation mode.
4. In the CAL mode the upper display shows an uncalibrated reading. This reading is
approximately ± 10 % of full scale of the applied reading. When C is pressed, the
calibration value is calculated relative to this reading.
5. The lower display indicates what function and point is being calibrated.
Note
h changes it back to 30 PSI.
D
on the 718Ex Calibrator.
D is pressed, the lower display indicates
D . Repeat this until CHEC
Process Calibrators
Calibration
c
D to
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