AMI INSPECTOR Conductivity
Product Description
A-96.250.611 / 120617
9
Measuring
Principle
The conductivity of high purity water is determined with a sensor
consisting of two metal electrodes. The characteristics of each sen-
sor is expressed as cell constant. An alternating voltage (to mini-
mize polarization effects) is applied to two electrodes. Depending
on the concentration of ions in the sample, a signal results between
the electrodes which is proportional to the conductivity of the water.
The measuring result is indicated as conductivity.
Temperature
compensation
The mobility of ions in water increase with higher temperature
which enlarges the conductivity. Therefore, the temperature is mea-
sured simultaneous by an integrated Pt1000 temperature sensor
and the conductivity is compensated to 25 °C. Several temperature
compensation curves, designed for different water compositions,
can be chosen.
After cation exchanger (cation conductivity), the temperature com-
pensation curve strong acids has to be set.
For more information see:
Influence of Temperature on Electrical
Conductivity, PPChem (2012)
Standard
Temperature
The displayed conductivity value is compensated to 25 °C standard
temperature.
