公开(公告)号：US3693436A

公开(公告)日：1972-09-26

申请号：US3693436D

申请日：1970-08-28

Applicant: LAB DATA CONTROL INC

Inventor： GILDNER KENNETH J

IPC: G01F1/704 ,  G01F1/00

CPC classification number: G01F1/704

Abstract: There is disclosed a liquid flow meter comprising a transparent glass tube upon which is positioned a pair of spaced photodetectors. The liquid to be measured is passed through the tube and through the detectors. A supply tank filled with gas at a suitable pressure is connected to a valve which, when actuated, injects into the liquid stream a bubble of predetermined size. Passage of the bubble through the two photodetectors actuates a timing circuit which displays the elapsed time, thereby giving an accurate measurement of flow rate.

Abstract translation: 公开了一种液体流量计，其包括透明玻璃管，在该透明玻璃管上定位有一对间隔开的光电检测器。 待测量的液体通过管并通过检测器。 在适当压力下填充有气体的供应罐连接到阀，当被致动时，该阀将预定尺寸的气泡注入到液体流中。 通过两个光电探测器的气泡的通过启动显示经过时间的定时电路，从而给出流量的精确测量。