公开(公告)号：US06830068B2

公开(公告)日：2004-12-14

申请号：US10232530

申请日：2002-09-03

申请人： Kevin Tetreault ,  John Derikx

发明人： Kevin Tetreault ,  John Derikx

IPC分类号： G01L2700

CPC分类号： G01L27/00 ,  Y10T137/86083

摘要： A vacuum generating device and method include a member defining a passage, a first valve, a second valve, and a fluid communication conduit. The passage extends between a first end and a second end, and includes a constriction defining an orifice. The first valve connects the first end of the member and an ambient environment. The first valve is adjustable between first and second configurations. The first configuration permits generally unrestricted fluid flow between the orifice and the ambient environment. The second configuration substantially prevents fluid flow between the orifice and the ambient environment. The second valve has a first port and a second port. The first port is adapted for fluid communication with a pressure source at a first pressure level. The fluid communication conduit connects the second end of the member and the second port of the second valve. The fluid communication conduit includes a fluid communication tap at a second pressure level. The second pressure level is responsive to fluid flow through the orifice.

摘要翻译： 真空发生装置和方法包括限定通道的构件，第一阀，第二阀和流体连通导管。 通道在第一端和第二端之间延伸，并且包括限定孔口的收缩部。 第一个阀连接构件的第一端和周围环境。 第一阀可在第一和第二配置之间调节。 第一种配置通常允许在孔口和周围环境之间不受限制的流体流动。 第二配置基本上防止了孔与周围环境之间的流体流动。 第二阀具有第一端口和第二端口。 第一端口适于在第一压力水平下与压力源流体连通。 流体连通管道连接构件的第二端和第二阀的第二端口。 流体连通管道包括处于第二压力水平的流体连通水龙头。 第二压力水平响应于通过孔口的流体流动。

公开(公告)号：US06823711B1

公开(公告)日：2004-11-30

申请号：US10430945

申请日：2003-05-07

申请人： Dingding Chen ,  Roger L. Schultz ,  Craig Zitterich ,  Martin T. Hagan ,  Meng Fun

发明人： Dingding Chen ,  Roger L. Schultz ,  Craig Zitterich ,  Martin T. Hagan ,  Meng Fun

IPC分类号： G01L2700

CPC分类号： G01L27/002 ,  G01L9/085

摘要： A system and method for dynamically calibrating signals from a quartz pressure sensor to correct for temperature transients. A series of differences of time spaced temperature readings is stored in a tapped delay line and coupled to a transfer function. The transfer function uses the temperature difference values to correct pressure frequency readings for temperature transient errors. In one form, one transfer function uses temperature and pressure readings to statically calibrate pressure readings and a second transfer function uses temperature differences to provide a temperature transient correction which is added to the statically calibrated pressure value.

摘要翻译： 用于动态校准来自石英压力传感器的信号以校正温度瞬变的系统和方法。 时间间隔温度读数的一系列差异存储在抽头延迟线中并耦合到传递函数。 传递函数使用温差值来校正温度瞬态误差的压力频率读数。 在一种形式中，一个传递函数使用温度和压力读数来静态校准压力读数，第二传递函数使用温度差来提供加到静态校准压力值的温度瞬变校正。

公开(公告)号：US06672130B2

公开(公告)日：2004-01-06

申请号：US10151053

申请日：2002-05-16

申请人： William Stephen Kosh

发明人： William Stephen Kosh

IPC分类号： G01L2700

CPC分类号： G01L27/005 ,  Y10T137/0379

摘要： A compact, portable and NIST traceable pressure source dynamically generates very low pressures includes at least one adjustable valves in-line with a fluid, such as air, flowing through the valve. A differential pressure is created across a pressure control device downstream from the valve. The differential pressure varies depending on the volume of the gas flow and the amount of resistance to the gas flow. The pressure generating device utilizes a miniature pump to create a pressure, or, alternatively, a vacuum, that causes gas flow. The pressure generating device is compact and capable of providing a very low and stable differential pressure by using a dynamic flow that compensates for temperature changes and volume changes. The compact module may be configured as a plug-in module for existing handheld calibrators for operator ease of use.

摘要翻译： 紧凑，便携和NIST可追溯的压力源动态地产生非常低的压力，包括至少一个与流过阀的流体（例如空气）成一直线的可调节阀。 在阀门下游的压力控制装置上产生压差。 压差根据气体流量和气体流量的阻力量而变化。 压力发生装置利用微型泵产生导致气体流动的压力，或者替代地，真空。 压力发生装置紧凑，能够通过使用补偿温度变化和体积变化的动态流动来提供非常低和稳定的压差。 紧凑型模块可以被配置为用于现有手持式校准器的插件模块，以便操作者易于使用。

公开(公告)号：US06598454B2

公开(公告)日：2003-07-29

申请号：US09916687

申请日：2001-07-30

申请人： Geof Brazier ,  John P. Clark, III ,  John E. Smallwood

发明人： Geof Brazier ,  John P. Clark, III ,  John E. Smallwood

IPC分类号： G01L2700

CPC分类号： F16K17/16 ,  F16K37/005 ,  Y10T137/8158 ,  Y10T137/8326

摘要： A system and method for monitoring a pressure relief device are provided. The system includes a release sensor that provides an indication when the pressure relief device activates. A wireless transmitter is connected to the release sensor and sends a wireless transmission having an activation signal when the indication is provided by the release sensor. A receiver receives the wireless transmission from the transmitter and generates a warning when the activation signal is identified.

摘要翻译： 提供了一种用于监视减压装置的系统和方法。 该系统包括释放传感器，当释压装置启动时提供指示。 当释放传感器提供指示时，无线发射器连接到释放传感器并发送具有激活信号的无线传输。 接收机从发射机接收无线传输，并在识别出激活信号时产生警告。

公开(公告)号：US06170316B2

公开(公告)日：2001-01-09

申请号：US09295092

申请日：1999-04-21

申请人： Jack Aldrich

发明人： Jack Aldrich

IPC分类号： G01L2700

CPC分类号： G01R31/3277 ,  G01R31/2829

摘要： A tool for testing pressure/vacuum engine control switches includes a first and second housing. The housings each include inner and outer passages. The housings are attached with the inner passages placed adjacent each other. When attached, the housings form a continuous longitudinal passage. A pressure chamber is attached to the first housing and includes a valve. The valve provides a passage to a testing chamber. The testing chamber includes a receptacle, pressure/vacuum gauge, and a plug. The first housing also includes a vent and a piston/rod arrangement which define a fluid chamber in the first housing. The rod extends from the first housing through the inner passages and partially into the second housing. A seal is provided around the portion of the rod which passes through inner passages. A return spring is provided around the portion of the rod which extends into the second housing. A lock-and-swivel joint is located at the end of the portion of the rod extending into the second housing. A threaded rod is attached to the lock-and-swivel joint and extends through the outer passage of the second housing. An adjusting knob is provided at the end of the threaded rod outside of the second housing. Preferably, the second housing also includes a mechanism for mounting a battery. The mechanism may include two (or more) mounting plates extending perpendicular to the second housing such that a battery may be inserted and retained therebetween. Wires may be attached to respective mounting plates and be provided with clips at the ends thereof. A light bulb may be provided on one wire.

摘要翻译： 用于测试压力/真空发动机控制开关的工具包括第一和第二壳体。 外壳各包括内通道和外通道。 壳体与彼此相邻放置的内部通道相连接。 当连接时，壳体形成连续的纵向通道。 压力室附接到第一壳体并且包括阀。 阀提供通向测试室的通道。 测试室包括容器，压力/真空计和插头。 第一壳体还包括在第一壳体中限定流体室的排气口和活塞/杆装置。 杆从第一壳体延伸通过内部通道并且部分地延伸到第二壳体中。 在杆的穿过内部通道的部分周围设置有密封件。 在杆的延伸进入第二壳体的部分周围设置复位弹簧。 锁定和旋转接头位于延伸到第二壳体中的杆的部分的端部。 螺纹杆附接到锁定和旋转接头并延伸穿过第二壳体的外部通道。 在第二壳体外部的螺杆的端部设置有调节旋钮。 优选地，第二壳体还包括用于安装电池的机构。 该机构可以包括垂直于第二壳体延伸的两个（或多个）安装板，使得可以将电池插入并保持在其间。 电线可以连接到相应的安装板，并在其端部设置有夹子。 一根灯丝可以设置一个灯泡。

公开(公告)号：US06711934B2

公开(公告)日：2004-03-30

申请号：US10197197

申请日：2002-07-17

申请人： David J. Barbe

发明人： David J. Barbe

IPC分类号： G01L2700

CPC分类号： D06F39/022 ,  G06Q50/06 ,  Y10T137/87249

摘要： A system for the operation of a number of commercial washing machines and automatically feeding liquid chemicals to the washing machines. The system has chemical reservoir pods with a pressure sensor and an output valve on each. The chemical pods are supplied with liquid chemical by refill pumps. The quantity of chemical in a chemical pod, and the quantity of chemical dispensed from each chemical pod is calculated from information received by a controller from the pressure sensor to determine when to open and close the valve. A further pressure sensor is provided in the supply pipe to each washing machine to verify and measure flow quantity of water and chemical to the machine.

摘要翻译： 一种用于操作多个商业洗衣机并自动将液体化学品送入洗衣机的系统。 该系统具有每个具有压力传感器和输出阀的化学容器舱。 化学荚由补充泵供应液体化学品。 化学品容器中的化学物质量以及从每个化学物质分配的化学物质的量由控制器从压力传感器接收的信息计算，以确定何时打开和关闭阀门。 在每个洗衣机的供应管道中设置另外的压力传感器，以验证和测量水和化学品流向机器的流量。

公开(公告)号：US06581436B2

公开(公告)日：2003-06-24

申请号：US10150180

申请日：2002-05-16

申请人： Eugen Mannhart

发明人： Eugen Mannhart

IPC分类号： G01L2700

CPC分类号： G01L27/002

摘要： A pressure sensor for measuring a pressure p contains a membrane with a front and a rear clamped into a body. The pressure p can be applied to the rear of the membrane. The front of the membrane is actively linked to a piston. In addition, a force transmitter is present with which a predetermined force can be applied to the piston. For the purpose of re-calibration, the membrane of the pressure sensor can be deformed by the force transmitter under precisely defined conditions and the output signal re-calibrated. A positioner can also be foreseen instead of the force transmitter.

摘要翻译： 用于测量压力p的压力传感器包含具有夹紧在主体中的前后的膜。 压力p可以施加到膜的后部。 膜的前部活动地连接到活塞。 此外，存在能够向活塞施加预定力的力传递器。 为了重新校准，压力传感器的膜可以在精确定义的条件下由力传感器变形，并输出信号重新校准。 定位器也可以预见，而不是力传递器。

公开(公告)号：US06568241B2

公开(公告)日：2003-05-27

申请号：US10103283

申请日：2002-03-21

申请人： James E. Cole

发明人： James E. Cole

IPC分类号： G01L2700

CPC分类号： A61B5/02156

摘要： A pressure transducer calibration device is disclosed having a housing which defines a first and second chamber separated by a compliant barrier. Two ports are in fluid communication with the first chamber, and one port is in fluid communication with the second chamber. The first chamber is configured to be filled with fluid and connected, via a three-way stopcock, to a pressure monitoring line. The second chamber is configured to be connected in fluid communication with a pressure generation device. In operation, the transducer is isolated from the monitored pressure source. Fluid communication is established between the first chamber and the transducer. A known fluid pressure is applied to the second chamber such that the known fluid pressure is also applied to the first chamber through the compliant barrier. The pressure transducer is then calibrated based upon the known fluid pressure within the first chamber.

公开(公告)号：US06484555B1

公开(公告)日：2002-11-26

申请号：US09543747

申请日：2000-04-05

申请人： Paul D. Perry ,  John E. Cook

发明人： Paul D. Perry ,  John E. Cook

IPC分类号： G01L2700

CPC分类号： F02M25/0854 ,  F02M25/0809 ,  F02M25/0836

摘要： A method of calibrating an integrated pressure management apparatus having a chamber with an interior volume varying in response to fluid pressure in the chamber. A diaphragm partially defining the chamber is displaceable between first and second configurations in response to fluid pressure variations around a certain pressure level. A resilient element applies a force biasing the diaphragm a first configuration and a switch is actuated by the diaphragm in the second configuration. The method includes connecting the chamber to a pressure source at a known pressure level, and adjusting resilient element such that the switch is actuated at the known pressure level.

摘要翻译： 一种校准具有腔室的集成压力管理装置的方法，其具有响应腔室中的流体压力而变化的内部容积。 部分地限定室的隔膜响应于围绕某一压力水平的流体压力变化而在第一和第二构造之间移动。 弹性元件施加将膜片偏置为第一构造的力，并且在第二构造中由隔膜致动开关。 该方法包括将腔室以已知的压力水平连接到压力源，以及调节弹性元件使得开关在已知压力水平下被致动。

公开(公告)号：US06237394B1

公开(公告)日：2001-05-29

申请号：US09257874

申请日：1999-02-25

申请人： James M. Harris ,  Babak Taheri ,  Errol Arkilic

发明人： James M. Harris ,  Babak Taheri ,  Errol Arkilic

IPC分类号： G01L2700

CPC分类号： G01L27/005 ,  G01D3/022 ,  G01D18/008 ,  G01L9/065

摘要： A method of correcting drift in a sensor includes the step of identifying a calibration command. A nominal zero pressure sensor drift correction factor for the sensor is identified by relying upon a calibration voltage value and a calibration temperature value secured at a nominal zero pressure condition. Sensor output is subsequently adjusted according to the nominal zero pressure sensor drift correction factor.

摘要翻译： 校正传感器漂移的方法包括识别校准命令的步骤。 通过依靠校准电压值和在标称零压力条件下保证的校准温度值来识别传感器的标称零压力传感器漂移校正系数。 传感器输出随后根据标称零压力传感器漂移校正因子进行调整。