Device for detecting the rotational movement of a rotational axis of an automatic drive or closing element of a revolving door comprises a rotary shaft seal designed as an elastomer encoder

摘要

Device for detecting the rotational movement of a rotational axis of an automatic door drive or door-closing element (1) of a revolving door comprises a rotary shaft seal (10, 11) surrounding the rotational axis and/or arranged in a gear train driving the rotational axis. The rotary shaft seal is designed as an elastomer encoder (12) that detects the rotational angle and/or the speed of the revolving door. Preferred Features: The elastomer encoder is a radial encoder and has a leakage sensor.