Container with device for indicating liquid level has device directing light beam at acute angle to container wall, optical element at exit angle of reflected light beam to indicate liquid level

摘要

The device has at least part (4) of the liquid level region of the container wall made of transparent material (6) with at least one associated device (2.1) with which an incident light beam (7) is directed at an acute angle to a surface of part of the container wall. A first optical element (9.1) arranged at the exit angle of a reflected light beam (7.0) indicates a liquid level. An independent claim is also included for the following: (a) a steam treatment device with a device for indicating a liquid level.