Search International and National Patent Collections

1. (WO2018015218) METHOD AND ASSEMBLY FOR ULTRASONIC CLAMP-ON FLOW MEASUREMENT, AND BODIES FOR IMPLEMENTING THE MEASUREMENT

Pub. No.:    WO/2018/015218    International Application No.:    PCT/EP2017/067421
Publication Date: Fri Jan 26 00:59:59 CET 2018 International Filing Date: Wed Jul 12 01:59:59 CEST 2017
IPC: G01F 1/66
Applicants: FLEXIM FLEXIBLE INDUSTRIEMESSTECHNIK GMBH
Inventors: HOHEISEL, Gerald
Title: METHOD AND ASSEMBLY FOR ULTRASONIC CLAMP-ON FLOW MEASUREMENT, AND BODIES FOR IMPLEMENTING THE MEASUREMENT
Abstract:
The invention relates to a method and an assembly for ultrasonic clamp-on flow measurement using a measurement of off-center sonic paths. Clamp-on ultrasonic transducers are secured on an intermediate piece, hereinafter referred to as spool piece, of a process tube. The invention additionally relates to bodies for implementing the measurement. The problem addressed by the invention is that of providing an assembly and a method for a flow measurement which has a high degree of measurement precision over a large measuring region even under difficult measuring conditions and which carries out a flow profile correction by means of an additional measurement of off-center sonic paths. An additional problem addressed by the invention is that of providing a body for implementing the measurement. The method according to the invention for ultrasonic clamp-on flow measurement on a process tube through which a liquid or gaseous process medium flows takes center sonic paths as well as off-center sonic paths into consideration. The flow measurement assembly according to the invention comprises a process tube through which a liquid or gaseous process medium flows and at least one sonic transducer pair. At least one second ultrasonic transducer operating in receive mode is arranged on the process tube. According to the invention, at least two bodies are arranged on the inner wall of the process tube. The problem addressed by the invention is also solved by bodies for implementing the measurement.