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719 Verification
This procedure is appropriate for the 719.
Display Verification
1. Press and hold O. This locks the 719 in a mode where all display segments are on.
All segments will stay on until Ois released.
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 Calibrator.
The use of TEFLON tape at the pressure fitting strengthens the seal.
2. Press O to turn the Calibrator on.
3. The display should read 0 PSI for the 30G and 0.00 PSI for the 100G with the
deadweight tester opened up to ambient air. If not, press Zuntil display reads 0.00
PSI or 0.000 PSI.
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
being tested (30G or 100G). Ensure the pressure has stabilized at each input before
verifying the display reading. Then proceed to the next value.
5. When complete, vent all pressure and disconnect the calibrator from the deadweight
tester.
WWarning
Note
Note
Process Calibrators
Verification
45
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