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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