Measuring line displacement sensor for use in differential pressure with line fixed to moving monitored object

摘要

The sensor has a line drum (5) for coiling up the measuring line (22). A spring (13) preloads the drum, and a rotational position sensor (19) is provided for the drum. The line eye (1) is arranged in the differential pressure chamber (33), under a differential pressure (! p). The line drum is arranged in a line chamber (29) and communicates with the spring chamber (34), in which the spring (13) for preloading the drum is arranged. The rotational position sensor is arranged so that it is readily accessible for repair and servicing.