ACOEM Met One Instruments GAS-1060, User Manual

Page: 90 / 164

Serinus 60 User Manual 3.0
Page 90
9. Turn off the vacuum source and disconnect the barometer from the Sample Port . Wait ~1
minutes for the pressure to equalise within the instrument.
10. Disconnect the vacuum source from the Exhaust Port .
11. Wait 2-5 minutes, 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.
12. Back - Pressure Calibration Menu - (read note) - OK.
5.2.2 Ambient Point Pressure Calibration
Full pressure calibrations are generally recommended, however it is possible to calibrate only the
ambient point in cases where only a minor ambient pressure adjustment is required.
Note: Ensure that the instrument has been running for at least one hour before any calibration is
performed to ensure the instrument’s stability.
Note: Ensure units of measure are the same on both the barometer and instrument.
Equipment Required

Barometer
Procedure
1. Open - Main Menu

Calibration Menu

Pressure Calibration Menu - (read note) - OK.
Note: This action will place the valve sequence on hold; normal sampling will be interrupted.
2. Edit - Ambient Set Pt. - (Read displayed instructions) - OK.
3. Disconnect any external tubing connected to the rear ports of the instrument ( Sample Port ,
Calibration Port and Exhaust Port ).
4. Wait 2-5 minutes and enter the ambient barometer reading into the instrument - Accept.
Figure 44 – Setting the Ambient Set Point
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.