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Two Electrode Standard Configurations

For most dielectric, conductivity and impedance material measurements electrode polarization or contact effects are less prominent. In this case, the standard configuration with the sample material prepared between two parallel plate electrodes is most advantageous. 

Sandwich electrodes

This arrangement is most simple and allows easy and flexible sample preparation. Nevertheless, the design requirements to an appropriate sample cell operating over a wide frequency, impedance and temperature range without sacrificing the Alpha-A analyzer series wide impedance range and high accuracy are extraordinary demanding.

Such a sample cell in realized in combination with an active impedance converter mounted in the cell head is realized by ZGS test interface. In contrast to other test interfaces and solutions from other manufactures, ZGS is specified at the sample electrodes position and therefore users do not have to care about artefacts by cell contributions to the measured results.

The ZG2 interface contains the same impedance converter and as ZGS, but no integrated sample cell. ZG2 can be connected by BNC terminals to any passive sample cell like e.g. BDS 1200 or any impedance under test.