INFICON Gemini ATM to Ultra-High Vacuum Gauge - Manual (Page 18)

18 tina83e1-a (2014-02)
2.2 Gas Type Dependence MAG50x
Indicated pressure (gauge calibrated for air)
4
2
10 –3
8
6
4
2
10 –4
8
6
4
2
10 –5
8
6
4
2
10 –6
8
6
4
2
10 –7
10 –7 2 4 6 10 –6 2 4 6 10 –5 2 4 6 10 –4 2 4 6 10 –3 2 4 6 10 –2
Xe Kr
Air
O
2
CO
N
2
H
2
Ne He
p
eff
[mbar]
p [mbar]
Ar
Indication range below 10
-5
mbar
In the range below 10
-5
the pressure indication is linear. For
gases other than air, the pressure can be determined by means
of a simple conversion formula:
p
eff
= K × indicated pressure