Pirani range (p, P < 1000 mbar) – INFICON HPG400 ATM to High-Vacuum Gauge User Manual
Page 47
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tina31e1 (2004-05) HPG400 v1.om
47
p (mbar)
10
2
8
6
4
2
10
1
8
6
4
2
10
0
8
6
4
2
10
–1
8
6
4
2
10
–2
H
2
He
Ne
Air
N
2
O
2
CO
10
–3
2
4
6
10
–2
10
–1
10
0
10
1
10
2
8
2
4
6 8
2
4
6 8
2
4
6 8
2
4
6 8
Water vapor
p
eff
(mbar)
Indication range
above 10
-2
mbar
Xe
Kr
Ar
CO
2
Freon 12
A mixture of gases and vapors is often involved. In this case, accurate
determination is only possible with a partial-pressure measuring instru-
ment.
Pirani range
(p
Changeover
< p < 1000 mbar)
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