Patent ID: 8047081

Claim:
An apparatus for ascertaining and/or monitoring volume- or mass-flow of a medium flowing through a pipeline in direction of a longitudinal axis of the pipeline, comprising: at least one ultrasonic sensor, which radiates/receives ultrasonic measuring signals at an incidence/emergence angle into/out-of the pipeline; and a control/evaluation unit, which, on the basis of the ultrasonic measuring signals, provides information concerning volume- and/or mass-flow of the medium flowing through the pipeline, wherein: said at least one ultrasonic sensor includes at least one sound-producing element, a coupling shoe and a coupling adapter; an end region of said coupling adapter facing toward said coupling shoe includes a securement mechanism for releasable securement of said coupling adapter to said coupling shoe; and an end region of said coupling adapter facing toward the pipeline is embodied as a function of the pipeline in such a manner that it is securable form-fittingly to the pipeline, and said securement mechanism is a plug-in mechanism.