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公开(公告)号：US3788145A
公开(公告)日：1974-01-29
申请号：US3788145D
申请日：1973-03-14
Applicant: PRO TECH INC
Inventor： IRWIN M
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, 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手段。 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，以防止由这种互连造成的压降，从而延长压力所需的时间以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。
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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.
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公开(公告)号：US3751990A
公开(公告)日：1973-08-14
申请号：US3751990D
申请日：1971-08-30
Applicant: PRO TECH INC
Inventor： BLECHMAN R
CPC classification number: G01N1/18
Abstract: Sampling of liquids to isolate discrete samples is accomplished by flowing the liquid through an intermittently actuated diverter from which successive samples flow to different collection locations through appropriate distribution means including a distributor arm movable stepwise to discharge into separate collector lines. Timed actuation of the diverter and distributor is provided by electrical relays and related controls.
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公开(公告)号：US3751983A
公开(公告)日：1973-08-14
申请号：US3751983D
申请日：1972-03-23
Applicant: PRO TECH INC
Inventor： RUTKOWSKI M , THOMPSON R
IPC: G01N1/14
CPC classification number: G01N1/14
Abstract: Samples are taken from a body of liquid at intervals by converting continuous flow of fluid from a pressurized source into intermittent sample-propelling flow. Both the repetition frequency of sampling and the duration of individual samplings are controlled through regulation of the propellant flow rate. Principal uses are in stream monitoring for pollution control, sewage treatment facilities, and industrial waste reduction programs.
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公开(公告)号：US3720109A
公开(公告)日：1973-03-13
申请号：US3720109D
申请日：1971-05-03
Applicant: PRO TECH INC
Inventor： BLECHMAN R
CPC classification number: G01N1/14 , G01F1/22 , G01N2001/1043
Abstract: Sampling apparatus is operated by continuous flow of fluid from a pressurized source through a regulating valve and a flowmeter having dual floats. At intervals determined by the flow rate a pressure-sensitive valve releases accumulated fluid to propel sampled medium from a sample intake to a collection location. Principal uses are in stream monitoring for pollution control, sewage treatment facilities, and industrial waste reduction programs.
Abstract translation: 采样装置通过来自加压源的流体的连续流动通过调节阀和具有双浮子的流量计来操作。 在由流量确定的间隔，压敏阀释放积聚的流体，以将取样的介质推送到采集位置。 主要用途是对污染控制，污水处理设施和工业废物减排计划进行流量监测。
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Patent Agency Ranking
公开(公告)号：US3926804A
公开(公告)日：1975-12-16
申请号：US51251574
申请日：1974-10-07
Applicant: PRO TECH INC
Inventor： MCCLURE CHARLES LAIRD
CPC classification number: B01D29/114 , B01D29/682 , B01D2201/282
Abstract: Continuously self-cleaning fluid filtration is provided, especially for use in systems of fluid sampling wherein recirculation of part of the fluid filtered thereby is bypassed back through in the reverse direction to clean it. The filter has a foraminous housing that also has end ports to the exterior and has rotatable internal baffling dividing the interior into compartments communicating with the respective ports.
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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。
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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。
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公开(公告)号：US3840123A
公开(公告)日：1974-10-08
申请号：US26222172
申请日：1972-06-13
Applicant: PRO TECH INC
Inventor： MC CLURE C
CPC classification number: B01D29/114 , B01D29/682 , B01D2201/282
Abstract: A continuously self-cleaning fluid filter is provided, especially for use in systems of fluid sampling wherein recirculation of part of the fluid filtered thereby is bypassed back through the filter in the reverse direction to clean it. The filter has a foraminous housing that also has end ports to the exterior and has rotatable internal baffling dividing the interior into compartments communicating with the respective ports.
Abstract translation: 提供了一种连续自清洁流体过滤器，特别适用于流体采样系统，其中过滤的一部分流体的再循环通过过滤器沿相反方向被绕过以将其清洁。 过滤器具有多孔壳体，其还具有到外部的端部端口，并且具有可旋转的内部挡板，将内部分隔成与各个端口连通的隔室。
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公开(公告)号：US3750477A
公开(公告)日：1973-08-07
申请号：US3750477D
申请日：1972-01-04
Applicant: PRO TECH INC
Inventor： RUTKOWSKI M , THOMPSON R
CPC classification number: G01N1/14 , G01N2001/1043
Abstract: Samples are taken from a body of liquid at intervals by converting continuous flow of fluid from a pressurized source into intermittent sample-propelling flow. Both the repetition frequency of sampling and the duration of individual samplings is controlled through regulation of the propellant flow rate. Principal uses are in stream monitoring for pollution control, sewage treatment facilities, and industrial waste reduction programs.
Abstract translation: 通过将来自加压源的连续流体流转换成间歇的样品推进流，间歇地从液体体取样。 通过调节推进剂流量来控制采样的重复频率和单次取样的持续时间。 主要用途是对污染控制，污水处理设施和工业废物减排计划进行流量监测。
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