公开(公告)号：US3863506A

公开(公告)日：1975-02-04

申请号：US36972273

申请日：1973-06-13

Applicant: PRO TECH INC

Inventor： MCCLURE CHARLES LAIRD

IPC: G01N1/14

CPC classification number: G01N1/14

Abstract: Electrically actuated apparatus for sampling liquid from the body thereof provides visible countdown of the time interval between successive samplings and also provides visible countdown of the duration of the time in which individual samples are being taken. The samples are propelled by fluid from an external or internal source of pressure, whichever is greater, interconnected for each sample duration period to a sample intake chamber in the body of liquid being sampled.

Abstract translation: 用于从其体内取样液体的电动装置提供了连续采样之间的时间间隔的可见倒数，并且还提供了采集各个样品的时间持续时间的可见倒数。 样品由来自外部或内部压力源（以较大者为准）的流体推动，每个采样持续时间间隔连接到正在采样的液体中的样品进样室。

公开(公告)号：US3727464A

公开(公告)日：1973-04-17

申请号：US3727464D

申请日：1972-04-14

Applicant: PRO TECH INC

Inventor： RUTKOWSKI M ,  STANLEY R

IPC: G01N1/10 ,  G01N1/14

CPC classification number: G01N1/14 ,  G01N2001/1043

Abstract: Repetitive sampling of liquid from a body thereof is controlled in frequency, dependent upon the depth of the liquid being sampled, so as to accord with the volume of the body thereof. Such depth-proportioning is accomplished, in a system using pressurized gas as a propulsion fluid and determining sampling frequency by gradual release thereof from a source to accumulate to a switching pressure at a given location, through bleeding off part of the accumulating gas against the back pressure of the depth of liquid. Principal uses are in stream monitoring for pollution control, in sewage treatment facilities, and in industrial waste reduction programs.

Abstract translation: 液体从其体内的重复取样频率被控制，取决于被取样的液体的深度，以便与其体积的体积一致。 这种深度比例是在使用加压气体作为推进流体的系统中实现的，并且通过将来自源的逐渐释放来确定采样频率，以通过将部分积聚气体排放到背部而将其积聚到给定位置处的切换压力 液体深度的压力。 主要用途是污染控制，污水处理设施和工业废物减少计划的流量监测。