公开(公告)号：US3869921A

公开(公告)日：1975-03-11

申请号：US41227573

申请日：1973-11-02

Applicant: PRO TECH INC

Inventor： IRWIN MALCOLM F

IPC: G01N1/14

CPC classification number: G01N1/14

Abstract: Successive samples are taken periodically from a body of liquid with the aid of pressurized fluid serving as both timing medium and sample propellant. The sampling apparatus is adjustable as to interval between successive samples, duration of taking of each sample, and sample lift.

公开(公告)号：US3890843A

公开(公告)日：1975-06-24

申请号：US43753074

申请日：1974-01-28

Applicant: PRO TECH INC

Inventor： IRWIN MALCOLM F

IPC: G01N1/14

CPC classification number: G01N1/14

Abstract: Equipment for sampling liquid at intervals controllable by adjusting the rate of accumulation of sample-propulsion fluid is provided with means for extending the intervals at which samples are taken and the duration of the taking of such samples. A pressure-responsive switching valve effective to interconnect accumulated propellant to a sampling locus in the liquid at a given accumulated pressure is partially shielded from sensing the pressure drop resulting from such interconnection by insertion of a fluidic delay line, thus extending the period required for the pressure to reaccumulate to the switching level. The range from shortest to longest sampling interval is adjustable by varying the degree of such shielding.

Abstract translation: 提供了通过调节样品推进液积累速率可控的间隔采样液体的设备，其具有用于延长采样时间间隔和采样时间的装置。 有效地将累积的推进剂与给定累积压力下的液体中的取样轨迹相互连接的压力响应切换阀被部分地屏蔽，以防止通过插入流体延迟线从这种互连造成的压降，从而延长了所需的时间 压力重新累积到开关水平。 从最短到最长采样间隔的范围可以通过改变这种屏蔽的程度来调节。

公开(公告)号：US3862575A

公开(公告)日：1975-01-28

申请号：US41227873

申请日：1973-11-02

Applicant: PRO TECH INC

Inventor： THOMPSON RICHARD R ,  IRWIN MALCOLM F

IPC: G01N1/14

CPC classification number: G01N1/14

Abstract: Successive samples are taken periodically from a body of liquid with the aid of pressurized fluid serving as both timing medium and sample propellant. Alternative high-pressure and low-pressure paths for the fluid correspond to high-lift and low-lift uses in sampling apparatus adjustable as to interval between successive samples and duration of taking of each sample, as well as convertible between levels of sample lift.

Abstract translation: 借助于作为定时介质和样品推进剂的加压流体，从液体体系周期性地取出连续的样品。 用于流体的替代的高压和低压路径对应于采样设备中的高升程和低升程用途，其可调节为连续样品之间的间隔以及每个样品的采集持续时间，以及在样品提升水平之间可转换。