Patent ID: 7706986
Filing Date: 2010-04-27
Classification: G01F,G01N

Abstract:
1. An apparatus for determining and/or monitoring volume and/or mass flow of a medium flowing in a stream-direction through a pipeline, or measuring tube, comprising: a measurement location having a plurality of ultrasonic sensors, which emit and/or receive ultrasonic measurement signals along defined sound paths; a control/evaluation unit, which determines volume and/or mass flow of the medium in the pipeline, or in the measuring tube, on the basis of the ultrasonic measurement signals, using a sound-entrainment method; on-site electronics, in which at least a first switch is provided, via which the ultrasonic sensors arranged in different sound paths are drivable and/or queryable, a second switch, which is assigned to said control/evaluation unit, via which emitting/receiving units associated with the individual ultrasonic sensors are actuated; a first, high quality electrical connecting line between said on-site electronics and said control/evaluation unit for transferring the emitted and received signals; and a second electrical connecting line between said control/evaluation unit and said on-site electronics, serving for synchronization of the switches in the on-site electronics and in the control/evaluation unit wherein: said control/evaluation unit is provided with an input unit and is remotely located relative to said measurement location and switching said at least said first switch, that the driven and/or queried, pair of ultrasonic sensors, is activated and provides measured values.