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Building Technologies Division User Manual LMS14... CC1U7471en
6 The settings in detail 07.05.2014
The linear characteristic is defined by 2 fixed points. The setting is made with the help
of 2 pairs of parameters for the function value and the voltage value (F1/U1 and
F2/U2).
The function value to be set is calculated as follows:
Function value = pressure value [bar]/0.1 bar
Example of pressure measurement at DC 10 V:
U2 = 3.5 V
4 bar
0
F2 = 40
2 bar
1 bar
U1 = 0.5 V
F2 = 20
F2 = 10
F1 = 0
7471d10e/1210
Pressure value [bar]
Voltage at Hx
Figure 47: Water pressure sensor
Key
F1 Function value 1
F2 Function value 2
U1 Voltage value 1
U2 Voltage value 2
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