
17
HPT 100
1E-4
1E-3
1E-2
1E-1
1E0
1E1
1E2
1E3
1E-4 1E-3 1E-2 1E-1 1E0 1E1 1E2 1E3
H2
He
N2
Ar
Kr
displayed pressure (mbar)
real pressure (mbar)
8.3. Gas Correction Factor
Measuring diagram HPT 100 (Pirani)
Relative sensitivity in the
molecular range (1x10
-1
mbar)
Correction factor Pirani
N
2
1.00
Air 1.00
H
2
0.58
He 1.02
Ar 1.59
CO
2
0.89
Correction factor Bayard-
Alpert
He 5.93
H
2
2.39
Ar 0.80
CO
2
0.74
C
3
H
8
0.32
Ne 3.50
Kr 0.60
Xe 0.41
R12 0.28
8.2. Dimensions
ø 55.0 mm (2.2")
35.0 mm (1.4")
85.0 mm (3.4")
147.0 mm (5.8 ")
Dimensions HPT 100
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