Serinus 51 User manual 1.0
Calibration
39
4.5 Pressure calibration
The pressure calibration involves a two point calibration, one point under vacuum and
another point at ambient pressure. This procedure is necessary when all settings have
been wiped, when pressure readings are faulty or for diagnostic purposes. To perform
a pressure calibration the following steps must be completed
Note: The vacuum calibration must be performed
first when performing a pressure calibration
Vacuum
1. Open instruments (section 2.1)
2. Unscrew fitting from top of cell, anticlockwise, remove 1/8 black tubing and
screw stainless steel blocker onto fitting (1 in Figure 9)
3. Remove tubing (connecting to hydrocarbon kicker) from cell T-piece (2 in
Figure 9)
4. Connect pressure meter onto cell T-piece and measure pressure
Figure 9 Pressure Calibration
5. Connect vacuum source to exhaust port of analyzer,.
6. Enter Calibration menu Pressure Calibration and select pressure (vacuum
pressure) then select the unit of pressure being used (torr etc)
7. The screen will display two horizontal bar (Figure 10) the first (Amb) is for
the ambient pressure sensor, the second (Cell) is for the cell pressure sensor
8. Ensure that the pressure is stable (arrows are not moving up and down the bar.
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