Kübler 573 Serie Mode D'emploi page 51

y
P1(x)= 0
P1(y)= 0
*)
Linearisation Mode = 1_quA
Application Example:
We like to display the filling quantity (volume) of a tank as shown below, with use of a pressure
sensor mounted to the bottom of the tank. With this application the analogue pressure signal is
proportional to the filling level, but not to the filling quantity.
P 16_x
P 15_x
P 10_x
P 01_x
To solve the problem, we divide the non-linear part of the tank into 14 parts. We enter the
expected display values of the pressure sensor to registers P01_x to P15 _x.
For the linear part of the tank it is sufficient to store the final pressure value to register P16_x.
Now we can easily calculate the appropriate filling quantities and enter these values to the
registers P01_y to P16_y.
6.573.011.E00_7b_e.doc / Sep-08
P1(x)= -1000
P1(y)= 900
P16(x)= 1000
P16(y)= 800
x
P16_y
P15_y
P10_y
Pressure
Sensor
P07_y
P01_y
0-20 mA
y
P8(x)= 0
P8(y)= 750
Linearisation Mode = 4_quA
Volume
x
P16(x)= +1000
P16(y)= - 600
Pressure
Page 23 / 28