Ametek JOFRA IPI Руководство по регулировке - Страница 4
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Calibration Interval
You should check performance of the IPI at the interval required by
your calibration program. We recommend adjustment when
measurement deviates by more than 75% of the specified accuracy, or
0.04%
Test Equipment
Verification and calibration of the IPI requires pressure and/or vacuum
standards able to produce and indicate pressures from vacuum to the
full-scale range of the unit under test. In order to maintain the specified
accuracy of the IPI, standards should have a TUR of 4:1 or better.
Connections
The IPI uses a 1/4" NPT male connection in the pressure input port.
Various adapters may or may not be needed to connect to the pressure
standard. Always make sure the hose, tubing, and fittings etc have a
rated working pressure at or above the pressure of the unit. Also it is
important that there be no leaks when performing calibration; use Teflon
tape where appropriate.
Entering Calibration Mode:
After you have made your connections, turn the power on while holding
the CONFIG key. Use the arrow keys to enter the password. The
password is 101. If you have entered calibration mode correctly the
display should look as shown below. The pressure value displayed will
be the full-scale value of the indicator.
Procedure:
Screens shown in this manual represent the displays shown with a 500
psi indicator. The IPI will prompt the technician for the appropriate
pressure at each calibration point.
Manual Calibration
CAL MODE
500.00
PSI