公开(公告)号：WO1998003839A1

公开(公告)日：1998-01-29

申请号：PCT/US1997012372

申请日：1997-07-21

Applicant: AMERICAN SIGMA, INC.

Inventor： AMERICAN SIGMA, INC. ,  RANDOLPH, Gary

IPC: G01F01/00

CPC classification number: G01F1/002 ,  G01F1/34 ,  G01F1/663 ,  G01F23/165 ,  Y10S239/03 ,  Y10T137/7287

Abstract: An apparatus (1) for calculating fluid flow in a channel, comprising a probe member (1) which detects fluid depth (L) in the channel; a mechanism (4) for measuring average fluid velocity in the channel; a mechanism for correcting the detected fluid depth based upon the measured average fluid velocity in order to account for drawdown; and a mechanism (2) for calculating average flow rate based upon the average fluid velocity measurement and the corrected fluid depth value.

Abstract translation: 一种用于计算通道中的流体流动的装置（1），包括检测通道中的流体深度（L）的探针构件（1） 用于测量通道中的平均流体速度的机构（4）; 用于基于所测量的平均流体速度来校正检测到的流体深度以便考虑到下降的机构; 以及用于基于平均流体速度测量值和校正流体深度值计算平均流量的机构（2）。

公开(公告)号：WO1992008963A1

公开(公告)日：1992-05-29

申请号：PCT/US1991008301

申请日：1991-11-06

Applicant: AMERICAN SIGMA, INC.

Inventor： AMERICAN SIGMA, INC. ,  HUNGERFORD, William, G. ,  MILLER, Donald ,  GRIFFITH, Carl ,  KAISER, Donald

IPC: G01N01/00

CPC classification number: E03F7/00 ,  G01F1/002 ,  G01F1/005 ,  G01F23/168 ,  G01F23/18 ,  G01F23/24 ,  G01F23/245 ,  G01F23/263 ,  G01F23/296 ,  G01F23/44 ,  G01N1/14 ,  G01N1/18 ,  G01N1/2035 ,  G01N33/18 ,  G01N2001/1043 ,  G01N2001/1081 ,  G01N2001/1427 ,  G01N2001/185

Abstract: Automatic fluid sampling and monitoring apparatus provided as a unitary structure (1, 2), and capable of collecting samples at selected intervals, monitoring the level of a condition of the fluid at selected intervals, and collecting (20) and storing sampling and fluid condition data for later retrieval. Sampling operations may be controlled on the basis of time and/or levels of condition being monitored (20). Where the apparatus also incorporates an internal flow measuring assembly, or is connected with an external flow meter, sampling operations may also be controlled on the basis of flow rate. The apparatus includes a self-contained microprocessor control section (15) for automatically controlling sampling operations, calculating fluid condition levels on the basis of signals from a sensor, and storing data relating to sample collection and the condition. Stored data can be called up on a display (18) of the apparatus, or transferred (16) via a portable transfer unit to an external output device, such as a printer, for producing a hard copy of the data.

Abstract translation: 自动流体取样和监测装置以单一结构（1,2）的形式提供，能够以选定的间隔收集样品，以选定的间隔监测流体状态的水平，并收集（​​20）并储存取样和流体条件 数据供以后检索。 可以基于被监视的状态的时间和/或水平来控制采样操作（20）。 在设备还包括内部流量测量组件或者与外部流量计连接的情况下，也可以基于流量来控制采样操作。 该装置包括用于自动控制采样操作的独立微处理器控制部分（15），基于来自传感器的信号计算流体状况水平，以及存储与样本收集和条件有关的数据。 可以在设备的显示器（18）上调用存储的数据，或者经由便携式传送单元将其传输（16）到诸如打印机的外部输出设备，以产生数据的硬拷贝。

公开(公告)号：WO1987005974A1

公开(公告)日：1987-10-08

申请号：PCT/US1987000714

申请日：1987-04-02

Applicant: AMERICAN SIGMA, INC.

Inventor： AMERICAN SIGMA, INC. ,  DICKINSON, W., David ,  BAETZ, Charles, N.

IPC: F04B23/14

CPC classification number: E21B49/084 ,  E21B43/121 ,  F04B43/10

Abstract: A bladder pump (40) is suspended in a tubular air lift pump housing (14) which is closed at its lower end by a check valve (19), and which is connected at its upper end by a first conduit (25) and a separator (24) selectively to a supply of air under pressure. Two additional conduits (26) and (27) extend from the upper end of the bladder pump in either side-by-side relation, or coaxially one within the other, through the bore in the left pump housing and first conduit and the separator to control means. A first one of the two additional conduits is secured in the upper end of the bladder pump to communicate with an upper check valve chamber, which is connected by a perforated discharge tube (50) to a lower check valve chamber in the bladder pump. The discharge tube is surrounded by a flexible bladder (61), which is separated from the bladder pump housing by an air chamber (69) which communicates with the other of the two additional conduits to the control means. By supplying air under pressure through the first conduit, water which has entered the air lift housing through the check valve in its lower end, can be forced through the check valve (55) and bladder pump and first of the two additional conduits to a waste line, after which pumping air can be supplied intermittently to the second of the additional conduits to operate the bladder and pump water to a sampler through the first of the additional conduits.