Varian FRG-700 series, Краткое руководство по эксплуатации

Страница: 16 / 32

FRG-700 Inverted Magnetron Pirani Gauge
16
p (mbar)
6
4
2
6
4
2
6
4
2
10
–4
8
6
4
2
He
Ar
Air
N2
O2
CO
10
–5
8
6
4
2
10 –6
10
–3
8
10
–2
8
10
–1
8
Indication range
10
-6
... 10
-1
mbar
p
eff
(mbar)
10 -6
2 4 6
10 -6
2 4 6
10 –4
2 4 6
10 -3
2 4 6
10 -2
2 4 6
10 -1
In the range below 10
-5
mbar, the pressure indication is linear.
For gases other than air, the pressure can be determined by
means of a simple conversion formula:
p
eff
= K × pressure reading
Where Gas type K (mean values)
Air (O
2
, CO, N
2
)
Xe
Kr
Ar
H
2
Ne
He
1.0
0.4
0.5
0.8
2.4
4.1
5.9