公开(公告)号：FR2986167B1

公开(公告)日：2014-04-11

申请号：FR1250806

申请日：2012-01-27

Applicant: BERTIN TECHNOLOGIES SA

Inventor： ROCH JEAN ,  LORECKI BOGUSLAW ,  BESNARD JACQUES

IPC: B02C19/00 ,  A61L11/00 ,  A62D3/178 ,  B09B3/00

公开(公告)号：GB2473310A

公开(公告)日：2011-03-09

申请号：GB201007585

申请日：2010-05-06

Applicant: BERTIN TECHNOLOGIES SA

Inventor： BOUGY JEAN-JACQUES ,  VALLAYER JULIEN ,  LORECKI BOGUSLAW

IPC: G01L23/06 ,  G01D1/12 ,  G01F23/02 ,  G01L23/08

Abstract: Method for measuring a variation in pressure or in volume in a reservoir (10) containing a liquid and connected via a passage (18) to a measuring column (20) partially filled with liquid. The method uses a means for lighting (24) and a means (22) for image taking in order to detect the first peaks of the oscillations of the level of liquid in the column (20) caused by a variation in pressure or in volume in the reservoir (10). A solenoid valve arrangement is placed in the passage between the reservoir and column for controlling the flow of liquid between them. In an alternative embodiment the liquid level may be measured via CCD camera, photo-electric, capacitive or ultra-sonic level sensors.