Pressure Calibration - Ametek Davenport PET Plus User Manual

15.3 PRESSURE CALIBRATION

Note that an accurate pressure gauge is required for this procedure.
The barrel pressure is calibrated by measuring the actual pressure and entering this value into the
system.
Press the key under CAL PRESSURE to display the "Pressure Calibration" screen.
This screen indicates the gas status (Nitrogen Gas is Off) and also displays the measured pressure.
Check that the measured pressure is 0Bar +0.1Bar.
Note that the "Zero" reading can vary slightly with changes in atmospheric pressure.
If the measured pressure is not 0Bar +0.1Bar, press the key under CAL POINT to display the "cal
point" screen.
The true pressure should automatically display 0.0Bar.
If it does not show 0.0Bar, press the key under CHANGE TRUE then enter 0.0Bar.
The display will now show 0.0Bar for the true pressure.
Press the key under ACCEPT to correct the zero pressure reading.
84 PET Plus User Manual