Process Calibrators
Calibration
57
1. Remove two-wire test lead from the 713 Calibrator and carefully attach the pressure
fitting of the deadweight tester to the pressure jack on the 713 Calibrator.
Note
The use of TEFLON tape at the pressure fittings strengthens the seal.
At this point, the display should be indicating “rAnGE”. This is an indication to
choose the correct model of the 713 Calibrator.
2. For 713 30G, press the
m key. For 713 100G, press the M key. The display will
flash for a short time:
------ rAnGE
then display:
CAL 0.00 PSI
3. Vent the system to ambient air to ensure 0.00 PSI.
4. Press any key on the 713 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.
5. Set up the deadweight tester for either 30 PSI or 100 PSI to be injected into the
pressure port of the 713 Calibrator.
6. Once the pressure has stabilized, press any key on the 713 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.
7. Set the deadweight tester for either 15 PSI or 50 PSI.
8. Once the pressure has stabilized, press any key on the 713 Calibrator. The display
should read:
CAL ------ PSI
then change to:
0.000mA XX.xx PSI (where XX.xx is the applied pressure)
If the display reads
CALU, continue to step 9. Otherwise, the 713 Calibrator is no
longer in CAL mode, skip to step 11.
9. Press m to go to vacuum calibration. (Pressing any other key will end the
calibration.) If you chose to calibrate vacuum, the display should read:
CAL -12.000 PSI
10. Apply -12 PSI, wait for the vacuum standard to stabilize, then press any key. The
display should show:
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