Pfeiffer PPT 100 - Gas Correction Factors

18
Technical data and dimensions
10.3 Gas correction factor
Fig. 8: Dependent on gas type PPT 100 (Pirani)
Relative sensitivity in molecular range (1 · 10
-1
mbar)
PPT
0,0001
0,001
0,01
0,1
1
10
100
1000
0,0001 0,001 0,01 0,1 1 10 100 1000
real pressure (mbar)
displayed pressure (mbar)
Nitrogen
Air
Hydrogen
Helium
Argon
Carbon dioxid
Pirani correction factor:
N
2
1.00
Air 1.00
H
2
0.58
He 1.02
Ar 1.59
CO
2
0.89