6. Connect a vacuum source to Exhaust Port of the instrument.
Figure 102 – Full Pressure Calibration Set-up (Vacuum)
7. Wait 2 - 5 minutes and ensure the pressure reading on the barometer has dropped and is stable.
8. Enter the barometer reading into the instrument - Accept.
9. Read displayed instructions - OK.
10. Turn OFF the vacuum source and wait 1 min or until the barometer reads ambient pressure.
11. Disconnect the vacuum source and barometer from Exhaust Port and Sample Port.
Figure 103 – Full Pressure Calibration Set-up (Ambient)
12. Wait 2 - 5 min, enter the ambient barometer reading into the instrument - Accept.
Note: Both of the pressure sensors should now be displaying the current ambient pressure and
they should be the same value within 3 torr of each other.