Martel Electronics BetaGauge PI PRO - Manual (Page 12)

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vacuum to the full-scale range of the unit under test. In order to
maintain the specified accuracy of the BetaGauge PI, standards should
have a TUR of 4:1 or better.
Connections:
The BetaGauge PI 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 gauge.
Procedure:
Screens shown in this manual represent the displays shown with a 500
psi Gauge. The BetaGauge PI will prompt the technician for the
appropriate pressure at each calibration point.
Use the Pressure Standard to output 500.00 psi (100%). After the
output has stabilized, press the ENTER key to continue. As the unit
takes readings, the screen will show ———-. When the readings are
complete the screen should look as shown in the illustration that
follows.
Use the Pressure Standard to output 437.50 psi (87.5%). After the
output has stabilized, press the ENTER key to continue. As the unit
takes readings, the screen will show ———-. When the readings are
complete the screen should look as shown below.
PSI
437.50
CAL MODE
PSI
500.00
CAL MODE