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Instruction Manual
5 Analog Output
The CDM900 provides a 0 to 10 Vdc linear signal proportional to pressure.
Pressure p
1.1×F.S.
1.0×F.S.
0.9×F.S.
0.8×F.S.
0.7×F.S.
0.6×F.S.
0.5×F.S.
0.4×F.S.
0.3×F.S.
0.2×F.S.
0.1×F.S.
0.0×F.S.
0
1
1)
Source: NPL (National Physical Laboratory)
Guide to the Measurement of Pressure and Vacuum, ISBN 0904457x / 1998
InstruTech
2
3
4
Measuring signal U
p = (U
/ 10 V) × p (F.S.)
out
Conversion Torr Pascal
Torr
mbar
1013.25 / 760 =
c
1.00
1.3332...
Example: Gauge with 10 Torr F.S.
Measuring signal U
p = (6 V / 10 V) × 10 Torr
= 0.6 × 10 Torr = 6 Torr
5
6
7
[V]
out
1)
1)
Pa
101325 / 760 =
133.3224...
= 6 V
out
CDM900 Micro Bee
8
9
10
Page 13
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