6. Refer to Figure 112. Connect a vacuum source to Exhaust Port of the instrument.
Figure 112 – Full Pressure Calibration Set-up
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. Refer to Figure 113. Disconnect the vacuum source and barometer from Exhaust Port and Sample
Port.
Figure 113 – Full Pressure Calibration Set-up (Ambient)
12. Wait 2 - 5 min, enter the ambient barometer reading into the instrument - Accept.
Note: Both cell and ambient pressure sensors should now be displaying the current ambient
pressure and they should be the same value within 3 torr of each other.
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