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71X Series
Calibration Manual
Display Verification
1. Push and hold the
2. Check to see that all segments of the display are showing.
3. Turn the Calibrator off. The 718 and 718Ex verification test is now complete.
719 Verification
This procedure is appropriate for the 719.
Display Verification
1. Push and hold . This locks the 719 in a mode where all display segments are on.
2. Check to see that all segments of the display are showing.
Pressure Verification
To avoid a violent release of pressure or vacuum, always depressurize
the system slowly using the pressure/vacuum release control before
detaching any pressure line.
1. Carefully attach the pressure fitting of the deadweight tester to the pressure port of
The use of TEFLON tape at the pressure fitting strengthens the seal.
2. Push to turn the Calibrator on.
3. The display should read 0 PSI for the 30G and 0.00 PSI for the 100G with the
The 719 vent should be closed and the pressure/vacuum switch should be
in the Pressure position for pressure measurements.
When verifying vacuum measurement, make sure the pressure/vacuum
switch is in the Vacuum position. Clockwise is for pressure and counter-
clockwise is for vacuum.
4. Setup the deadweight tester for the sequence of PSI inputs from Table 67 for the 719
5. When complete, vent all pressure and disconnect the Calibrator from the deadweight
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key and then push and release the green key. This locks
the 718 in a mode where all display segments are on. All segments will stay on until
the
key is released.
All segments will stay on until is released.
the Calibrator.
deadweight tester opened up to ambient air. If not, push until display reads
0.00 PSI or 0.000 PSI.
being tested (30G or 100G). Ensure the pressure has stabilized at each input before
verifying the display reading. Then proceed to the next value.
tester.
WWarning
Note
Note
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