Instruction Manual WGM701 Wasp
InstruTech
Page 16
5
Using the gauge with different gases
The measurement value is gas dependent. The pressure reading applies to dry air, O
2
, CO and N
2
. For other
gases, the measurements have to be corrected.
Indicated pressure range from 7.6 x 10
-3
to 75 Torr
(Pirani Mode only - Gauge calibrated for air)
p [Torr]
p
eff
[Torr]
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
Indication range
above 10
-2
Torr
Xe
Kr
Ar
CO
2
Freon 12
