D048-50-880 Issue E
Page 12
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OPERATION
Figure 4 - Pressure Output Signal of AIGX
4.2.1
Calibration in Different Gases
The equation given in
is for air or nitrogen only. For other gases, the indicated pressure has to be
multiplied by a gas calibration factor (GCF).
The following table lists the gas calibration factor for most commonly used gases.
Table 3 - Gas Calibration Factors for Various Gases
Gas
GCF
Helium
5.7
Argon
0.75
Neon
3.3
Krypton
0.5
Xenon
0.35
Hydrogen
2.4
Oxygen
1
Carbon Monoxide
1.15
Carbon Dioxide
0.7
0
1
2
3
4
5
6
7
8
1E-10
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
1E-1
1E+0
1E+1
Indicated Pressure
G
a
uge
out
put
(v
ol
ts
)
mbar
torr
Pascal