Service setup
Page 57
9.2
Conductivity measuring amplifier
9.2.1
Calibration of the conductivity and temperature measurement
1.
Adjust software settings for the conductivity- and temperature measurements with
the electronics.
The reading values are sluggish as the values are based on averaging
calculations (wait 20 sec. approx.). In principle first adjust the temperatures then
the conductivities!
The scale value is factory set and should not be changed normally.
-
Simulate conductivities and temperatures specified by resistors.
-
Define the
scale value
of the temperature- and conductivity measurement so, that the
temperature- and conductivity measurement shows the parameter which are
simulated by the resistors.
Example adjustment of the measuring points Q1, Q3 listed below (Q2 and Q4 are
similar to Q3):
Resistor conductivity
100kOhm
6,00 µS/cm
Resistor temperature non-existent, because Q1 uncompensated
(System must be in production, so that values are updated)
Resistor conductivity
150kOhm
0,067 µS/cm
scale value
reading value
