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Application B007
Article 682191
2.6 Humidity
The humidity sensor senses the relative humidity of the air and the room temperature. Both measuring
values are made available in the form of analog voltages. The measuring ranges of the sensor extend from 0
to 100 % of relative humidity and from –30 to +70 °C. For use with the analog input / analog sensor
interface, the following parameters are recommended:
Parameter
Measuring value for 0% of the measuring signal:
Measuring value for 100% of the measuring
signal:
Measuring range factor:
Limit value 1:
Hysteresis 1:
Limit value 2:
Hysteresis 2:
Setting
0
10000
corresponds to
0 % r. h.
100 % r. h.
0,01
40 %
5%
70 %
5%
40 % r. h.
5 % r. h.
70 % r. h.
5 % r. h.
Measuring value for 0% of the measuring signal:
Measuring value for 100% of the measuring
signal:
Measuring range factor:
Limit value 1:
Hysteresis 1:
Limit value 2:
Hysteresis 2:
–3000
+7000
–30°C
+70°C
0,01
50 %
2%
55 %
2%
20 °C
2K
25 °C
2K
2.7 Air pressure
For an air pressure sensor with an input range of 70.000 … 120.000 Pa which is converted to 0 … 10 volts,
the following parameters are recommended for use with the analog input / analog sensor interface:
Parameter
Measuring value for 0% of the measuring signal:
Measuring value for 100% of the measuring
signal:
Measuring range factor:
Limit value 1:
Hysteresis 1:
Limit value 2:
Hysteresis 2:
© 2008 Merten GmbH
18
Setting
7000
12000
corresponds to
700 hPa
1200 hPa
10
60 %
2%
64 %
4%
1000 hPa
10 hPa
1020 hPa
20 hPa