Agilent Technologies FRG700KF25 Operating Instructions Manual page 32

Inverted Magnetron Pirani Gauge FRG-700 FRG-702
In the range below 10
than air, the pressure can be determined by means of a simple conversion formula:
where
These conversion factors are average values.
-5
mbar, the pressure indication is linear. For gases other
p = K × pressure indicated
eff
gas type
air (O , CO, N
2
Xe
Kr
Ar
H
2
Ne
He
A mixture of gases and vapors is often involved. In this case,
accurate determination is only possible with a partial pressure
measurement instrument, e.g. a quadrupole mass spectrometer.
32
K
) 1.0
2
0.4
0.5
0.8
2.4
4.1
5.9