Fluke 721-1601, Руководство по калибровке, Страница: 15 / 28

Pressure Calibrator
Performance Verification Tests
7
Pressure Verification
To do the pressure verification test:
1. Carefully attach the pressure fitting of the Pressure Controller/Calibrator or
Piston Gauge (called pressure source for the remainder of this procedure) to
the first pressure port of the Product.
Note
Use plenty of TEFLON tape when attaching pressure fitting.
The display should read 0.00 PSI with the deadweight tester opened up to
ambient air. If not, push
Z
until both displays read 0.00 PSI.
2. Set up the deadweight tester for the sequence of PSI inputs from Table 3 to
be injected into the pressure port of the Product.
3. Ensure the pressure has stabilized at each input before you verify the display
reading.
4. Carefully vent all pressure and disconnect the first pressure port.
5. Connect and test the second pressure port.
6. Set up the deadweight tester for the sequence of PSI inputs from Table 3 to
be injected into the pressure port of the Product.
7. Ensure the pressure has stabilized at each input before you verify the display
reading.
8. Set up the deadweight tester for the sequence of PSI inputs from Table 3 to
be injected into the pressure port of the Product.
9. Ensure the pressure has stabilized at each input before you verify the display
reading.
Table 3. Pressure Verification Tests
16 PSI 36 PSI
Input
Pressure
Lower Limit Upper Limit
Input
Pressure
Lower Limit Upper Limit
16.000 15.996 16.004 36.000 35.991 36.009
13.000 12.996 13.004 29.000 28.991 29.009
10.000 9.996 10.004 22.000 21.991 22.009
6.000 5.996 6.004 14.000 13.991 14.009
3.000 2.996 3.004 7.000 6.991 7.009
0.000 -0.004 0.004 0.000 -0.009 0.009
-5.000 -5.004 -4.996 -5.000 -5.009 -4.991
-10.000 -10.004 -9.996 -10.000 -10.009 -9.991
-13.750 -13.754 -13.746 -13.750 -13.759 -13.741