公开(公告)号：EP3294053A1

公开(公告)日：2018-03-21

申请号：EP16793325

申请日：2016-05-09

Applicant: FLOWNAMICS ANALYTICAL INSTR INC

Inventor： BIKSACKY MICHAEL

IPC: A01J3/00 ,  C12M1/00 ,  C12M1/04 ,  F15C1/04 ,  F16K7/06 ,  F16K17/22 ,  G01F1/692

CPC classification number: C12M41/00 ,  C12M29/04 ,  C12M29/10 ,  G01F1/708 ,  G01P5/18

Abstract: An apparatus and method for determining fluid flow (e.g., sterile media flow, filtrate flow, etc.) through tubing is provided. The apparatus includes an air source, a flow valve, a first sensor, a second sensor, and a media tubing section extending between the first sensor and the second sensor. In operation, air from the air source is introduced by the flow valve into a fluid flow to create a lead line of fluid immediately following the introduced air. As the lead line of fluid passes each sensor, the sensors are used to determine a time between when the lead line passes the first sensor and the second sensor and that determined elapsed time is used, along with a determined volume of the media tubing section to determine the rate of flow of the fluid flow.