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71X Series
Calibration Manual
Pressure Measure
The 718 Pressure Calibrators have 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 718 Calibrator and carefully attach the pressure
2. At this point, the display should be indicating "rAnGE". This is an indication to
3. Vent the system to ambient air to ensure 0.00 PSI.
5. Set up the deadweight tester for either 30 PSI or 100 PSI to be injected into the
6. Set the deadweight tester for either 15 PSI or 50 PSI.
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fitting of the deadweight tester to the pressure jack on the 718 Calibrator.
The use of TEFLON tape at the pressure fittings strengthens the seal.
choose the correct model of the 718 Calibrator.
For 718 30G, push the
flash for a short time:
------
rAnGE
then display:
CAL
0.00 PSI
Push any key on the 718 Calibrator. The display will change to read:
CAL
------ PSI
then change to:
CAL
30.000 PSI
or
CAL
100.00 PSI
depending on which model /range was selected in step 2.
pressure port of the 718 Calibrator.
Once the pressure has stabilized, push any key on the 718 Calibrator. The display
should read:
CAL
------ PSI
then change to:
CAL
15.000 PSI
or
CAL
50.00 PSI
depending on which model /range was previously selected.
Fluke-Direct
Note
key. For 718 100G, push the
key. The display will
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