Electronic capacitive measuring head

摘要

The invention relates to a capacitive measuring head for distance measurements. A circuit is created which allows capacitance measurements within a wide range and is as temperature-stable as possible. The circuit exhibits a bridge circuit. A closed-loop control is provided which acts directly on the bridge circuit. A special sensor element (11, 12, 13, 15, 16) is proposed which acts in a temperature-stabilising manner. <IMAGE>