ISO calibration conductivity
The comparative measurement of conductivity sensors is performed by using traceable reference solutions.
To calibrate analytical measurands, buffer and reference solutions are used, for they have known conductance values.
In the context of comparative measurement, the device under test is immersed in the reference solution and the deviation between the actual and target value is documented. As it has a significant influence on the conductivity, the reference temperature is also measured and documented.
Calibration is performed in scaled measuring ranges, based on 3 measurement points, via the analog output (current) and the digital output (IO-Link). After calibration, the device under test is reset to its factory settings.