Level measuring device which can be assembled from components

Claim 1

A level measuring device for measuring the level of a material within a container, the level measuring device comprising an ultrasonic transducer for directing a transmitted pulse onto the surface of said material within said container and receiving the echo signal reflected at the surface of said material, an electrical circuit for exciting said ultrasonic transducer to oscillations and for converting said received reflected echo signal to an electrical signal which is transmitted to an evaluating device, said electronic circuit receiving the electrical energy necessary for the operation of the level measuring device from said evaluating device, wherein (a) said ultrasonic transducer is surrounded by a housing and together with said housing forms a first functional unit; (b) said electrical circuit is surrounded by a hood and together with said hood forms a second functional unit; (c)d said housing and said hood are detachably connected to each other; (d) said housing is secured to a wall of said container enclosing said materials to be measured by means of a coupling flange which surrounds a sealing strip extending radially outwardly from the surface of said housing; (e) said ultrasonic transducer is located in a cylindrical trough which is coupled to the sealing strip to reduce the effect of vibration of the container on the transducer; (f) said ultrasonic transducer is covered on the side not facing said material to be measured by a steel plate which is borne by supports integrally formed with a ring zone of said housing and extending through the interior of said housing; and (g) on said hood a terminal space is integrally formed in the interior of which electrical connecting elements for connecting the level measuring device with said evaluating device are arranged and which is closed by a cover.