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6 Operation
Once the supply voltage has been established, the measuring signal is available at the electrical con-
nection between pins 2 and 3.
Recommendations
► Respect the minimum stabilization period of 10 minutes.
► Respect the relation between measuring signal and pressure.
► Leave the gauge switched on at all times, regardless of the prevalent pressure.
6.1 Converting measuring signal and pressure
p
1E+05
1E+04
1E+03
1E+02
1E+01
1E+00
1E–01
1E–02
1E–03
1E–04
1E–05
Fig. 5:
p Pressure
Measuring signal (U)
[V]
Tbl. 5:
Converting measuring signal and pressure
Validity range
● 5 × 10
● 3.75 × 10
● 5 × 10
1)
0.0 0.5 1.0 1.5
2.0
2.5
Relation between measuring signal and pressure
U
Measuring signal [V] (output voltage)
Constants for converting measuring signal and pressure
-4
hPa < p < 1000 hPa
-4
Torr < p < 750 Torr
-2
5
Pa < p < 1 × 10
Pa
Dependent upon unit of pressure
3.0
3.5
4.0
4.5
5.0
5.5
U [V]
Pressure (p)
[hPa]
[mbar]
[Torr]
[micron]
[Pa]
6.0
6.5
7.0
7.5
8.0
8.5
Constant (c)
5.5
5.625
2.625
3.5
Operation
Pa
hPa
Torr
9.0
9.5
10.0
10.3
1)
23/42
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