Manual

Table Of Contents

3 Description

3.2 Function

The device emits an electric field from the PEEK tip. As the medium approaches, the capacitance of the

capacitor is changed in the electric field. The capacitor is formed by the PEEK tip and the housing or the

vessel or pipe wall. The medium must have a minimum conductivity (dielectricity, permittivity [r]). The

change in the electric field is detected by the electronics of the device, processed further and passed on

as an output signal or switching signal, e.g. to a PLC.

Fig. 3-1 Schematic representation of the change in capacitance with media detection