INFICON BPG402-Sx ATM to Ultra-High Vacuum Gauge - Manual (Page 47)

tina46e1-a (2010-03) BPG402.om
47
Appendix
p = 10 (U - 7.75) / 0.75 + c
U = 0.75 × (log p - c) + 7.75
where U p c
[V] [mbar] 0
[V] [Pa] 2
[V] [Torr] -0.125
1E+01
1E–01
1E–03
1E–05
1E–07
1E–09
1E+03
0.0
1E+04
1E+02
1E+00
1E–02
1E–04
1E–06
1E–08
1E–10
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
se
ns
or
er
ro
r
Measuring signal U [V]
Pressure p [mbar]
inadm
issi
bl
e r
ange
inadm
issi
bl
e r
ange
Output signal U
[V] [mbar]
Pressure p
[Torr] [Pa]
0.1 / 0.3 / 0.5 Sensor error (
→ 42)
0.51 … 0.774 Inadmissible range
0.774 5Ч10
-10
3.75Ч10
-10
5Ч10
-8
1.00 1Ч10
-9
7.5Ч10
-10
1Ч10
-7
1.75 1Ч10
-8
7.5Ч10
-9
1Ч10
-6
2.5 1Ч10
-7
7.5Ч10
-8
1Ч10
-5
3.25 1Ч10
-6
7.5Ч10
-7
1Ч10
-4
4.00 1Ч10
-5
7.5Ч10
-6
1Ч10
-3
4.75 1Ч10 -4 7.5Ч10 -5 1Ч10 -2
5.50 1Ч10
-3
7.5Ч10
-4
1Ч10
-1
6.25 1Ч10 -2 7.5Ч10 -3 1Ч10 0
7.00 1Ч10
-1
7.5Ч10
-2
1Ч10
1
7.75 1Ч10
0
7.5Ч10
-1
1Ч10
2
8.50 1Ч10
1
7.5Ч10
0
1Ч10
3
9.25 1Ч10
2
7.5Ч10
1
1Ч10
4
10.00 1Ч10
3
7.5Ч10
2
1Ч10
5
>10.00 Inadmissible range
A: Relationship Output
Signal – Pressure
Conversion formulae
Conversion curve
Conversion table