Abstract: A measuring system and method for determining and/or monitoring the flow of a measured medium through a measuring tube with a first ultrasonic sensor and at least a second ultrasonic sensor. The first Ultrasonic sensor is placeable in a first region of the measuring tube, and the second ultrasonic sensor is placeable in a second region of the measuring tube. The ultrasonic signals transmittable through the measured medium from the first ultrasonic sensor are receivable by the second ultrasonic sensor, and the ultrasonic signals transmittable through the measured medium from the second ultrasonic sensor are receivable by the first ultrasonic sensor. A control/evaluation unit ascertains the volume flow and/or the mass flow of the measured medium flowing in the measuring tube by means of a travel-time difference method.

Abstract: Measuring system and method for determining and/or monitoring flow of a measured medium through a measuring tube with a first ultrasonic sensor and at least a second ultrasonic sensor, wherein the first ultrasonic sensor has at least one electromechanical ultrasonic transducer element and is placeable in a first region of the measuring tube, and wherein the second ultrasonic sensor has at least two electromechanical ultrasonic transducer elements and is placeable in a second region of the measuring tube in such a manner, that the ultrasonic signals transmittable through the measured medium from the first ultrasonic sensor are receivable by the second ultrasonic sensor, and that the ultrasonic signals transmittable through the measured medium from the second ultrasonic sensor are receivable by the first ultrasonic sensor, and with at least one control/evaluation unit, which, on the basis of the ultrasonic-measuring signals, or on the basis of measurement data, which are derived from the ultrasonic measuring si