Search International and National Patent Collections

1. (WO2018219492) METHOD FOR DETERMINING THE PRESSURE OF A FLUID

Pub. No.:    WO/2018/219492    International Application No.:    PCT/EP2018/000258
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Thu May 17 01:59:59 CEST 2018
IPC: G01L 11/06
G01F 1/66
Applicants: DIEHL METERING GMBH
Inventors: RIEß, Steffen
WETZEL, Marcus
PLOß, Peter
NEDER, Frederik
MADINGER, Andreas
Title: METHOD FOR DETERMINING THE PRESSURE OF A FLUID
Abstract:
The invention relates to a method for determining the pressure of a fluid, wherein there is a measurement arrangement for transmitting and receiving an acoustic wave, the acoustic wave passes along a measurement section (7) in the fluid flow region, wherein the acoustic wave has a time of flight for passing through the measurement section (7), a parameter which is influenced by the pressure of the fluid is determined, and the pressure of the fluid is derived therefrom, wherein there is a first (F1) and a second frequency (F2) for transmitting the acoustic wave, and the parameter influenced by the pressure of the fluid is determined based on a time-of-flight difference between the time-of-flight of the acoustic wave at the first frequency (F1) and the time-of-flight of the acoustic wave at the second frequency (F2) at a known point in time in the received signal.