CELLS AND CONDUCTIVITY MEASURES:
The conductivity measurement is carried out through a probe called a conductivity cell which is connected to the conductivity meter and immersed in the solution to be measured; the measured value is expressed in µS/cm or mS/cm (submultiples of the main unit of measurement S/cm).
There are different conductivity cells for different measurement ranges:
Cell with constant C=1 measuring range: 10 µS… 10 mS
Cell with constant C=0.1 measuring range: 0,1 µS … 1 mS
Cell with constant C=10 measuring range: 100 µS … 200 mS
Like all physical parameters, conductivity is also influenced by the temperature variation for this reason the conductivity cells also integrate a temperature sensor inside them to compensate for this variation and have the maximum possible accuracy.
Thanks to the temperature compensation it is possible to express the conductivity value at a single reference temperature (normally 20°C or 25°C) regardless of the real temperature of the sample.