Ultrasonic filling-level measuring apparatus with maximum level recognition

摘要

Device for measuring the liquid level in a container (1) comprises a main ultrasound reflector (6) formed as a solid body and arranged in the container in the region of a main sound cone of the ultrasound signals at a height corresponding to a predetermined limiting level (2) of the liquid in the container. An independent claim is also included for a method for the continuous measurement of a liquid level in a container using he above device. Preferred Features: An auxiliary ultrasound reflector is arranged in the region of the main sound cone and at a distance from an ultrasound emitter (7) which is lower than the distance between the emitter and the main ultrasound reflector. An evaluation unit tests running times and/or intensities of ultrasound signals in subsequent measuring cycles.