This is based on the principle that sound waves travelling with the flow will move faster than those travelling against it. The resulting difference in transit-time is directly proportional to the flow velocity of the liquid and consequently to the volumetric flow rate.
The ultrasonic transducers (sensors) of the flow meter are mounted on the external surface of the pipe and are used to generate and receive pulses. The flowing liquid within causes time differences in the ultrasonic signals, which are evaluated by the flow meter to produce an accurate flow measurement. The advanced electronics of the flow meter compensate for and adapt to changes in the flow profile and medium temperature to deliver reliable measurements.
The KATflow 200 is a hand-held ultrasonic flow meter for non-invasive and non-intrusive flow measurement of liquids and liquefied gases in fully filled pipes. The flow meter is equipped with one measurement channel to monitor the flow in one single pipe at a time. The instrument is supplied with an internal datalogger and software for the recording and download of measured values. Additionally, the KATflow 200 can be equipped with an integrated wall thickness gauge to provide further information about the application parameters. Thanks to its intuitive instrument menu, Setup Wizard, and Audible Sensor Positioning Assistant™ the flow meter can be set up and its sensors correctly installed in a matter of minutes.