利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

4 条记录 (耗时 0.049 秒)

    Barrier device
    1.
    发明授权
    Barrier device 失效
    屏障装置

    公开(公告)号：US5710552A

    公开(公告)日：1998-01-20

    申请号：US472695

    申请日：1995-06-06

    申请人： Steven J. McCoy ,  Mark S. Schumacher ,  John A. Kielb ,  Donald F. Palan ,  Grant B. Edwards ,  Randy J. Longsdorf ,  James E. Templin

    发明人： Steven J. McCoy ,  Mark S. Schumacher ,  John A. Kielb ,  Donald F. Palan ,  Grant B. Edwards ,  Randy J. Longsdorf ,  James E. Templin

    IPC分类号： G01D3/08 ,  G01F23/284 ,  H02H9/00 ,  G08C19/16

    CPC分类号： H02H9/008 ,  G01D3/08 ,  G01F23/284

    摘要： A barrier device threadably mounts to a cabling aperture on a field mounted transmitter. The field mounted transmitter receives and transmits signals, and is wholly powered by a current loop circuit. The barrier device has a conductive housing with at least a first and a second aperture and a pair of conductors passing through the first aperture of the barrier device, for connecting to a terminal block in the transmitter. A pair of signal terminals, preferably as ring tongue lug, is mounted in the second aperture of the barrier device. The signal terminals are connectable to a handheld communicator, which is used to calibrate, monitor and test the transmitter. A barrier circuit is mounted in the housing and is electrically connected between the signal terminals and the conductors. Signals from the communicator access the terminal block through the barrier circuit, and the barrier circuit limits the power available at the signal terminals. One embodiment of the barrier device has a third aperture directly across from the first aperture. The first aperture threadably connects to the transmitter, so that cabling from the transmitter can pass through a passageway formed between the first and third apertures. Another embodiment has a stub shaped housing, with one end of stub being the first aperture, and the other end being the second aperture. The first aperture threads to the cabling aperture on the transmitter, and the barrier circuit is potted in the stub shaped housing.

    摘要翻译： 屏障装置螺纹地安装在现场安装的变送器上的布线孔中。 现场安装的发射机接收和发射信号，并由电流环路电路完全供电。 阻挡装置具有至少具有第一和第二孔径的导电壳体和穿过阻挡装置的第一孔的一对导体，用于连接到发射器中的端子块。 一对信号端子，优选地为环形舌片，安装在屏障装置的第二孔中。 信号端子可连接到手持通信器，用于校准，监控和测试发射机。 屏蔽电路安装在壳体中，并且电连接在信号端子和导体之间。 来自通信器的信号通过屏障电路接入端子块，并且屏障电路限制信号端子处的可用功率。 阻挡装置的一个实施例具有直接从第一孔直接穿过的第三孔。 第一个孔螺纹地连接到发射器，使得来自发射器的布线可以穿过形成在第一和第三孔之间的通道。 另一个实施例具有短截面的壳体，短截线的一端是第一孔，另一端是第二孔。 第一个孔径到发射机上的布线孔径，屏障电路被封装在短截线形壳体中。

    Microwave level gauge with remote transducer
    2.
    发明授权
    Microwave level gauge with remote transducer 失效
    带遥控传感器的微波液位计

    公开(公告)号：US5847567A

    公开(公告)日：1998-12-08

    申请号：US315429

    申请日：1994-09-30

    申请人： John A. Kielb ,  Randy J. Longsdorf ,  Grant B. Edwards ,  Donald F. Palan

    发明人： John A. Kielb ,  Randy J. Longsdorf ,  Grant B. Edwards ,  Donald F. Palan

    IPC分类号： G01F23/284 ,  G01R27/04 ,  G01F23/28

    CPC分类号： G01F23/284

    摘要： A level sensor for use in a process application measures height of a product in a tank. The level meter includes a microwave feedhorn directed into the tank, an electronics housing spaced apart from the feedhorn and a microwave waveguide extending therebetween. A microwave transducer in the housing couples to the waveguide and sends and receives microwave signals. A microprocessor in the housing identifies echoes from the microwave signals which are generated and sensed by the microwave transducer. The microprocessor determines height of the product based upon a microwave echo from the product and a microwave echo from the feedhorn. The microprocessor compensates for the effect of propagation delay through the waveguide on height measurements with the feedhorn echo and provides an output related to height of the product in the tank.

    摘要翻译： 在过程应用中使用的液位传感器测量罐中产品的高度。 电平表包括引导到储罐中的微波馈电喇叭，与馈电喇叭间隔开的电子器件壳体和在其间延伸的微波波导管。 壳体中的微波换能器耦合到波导并发送和接收微波信号。 外壳中的微处理器识别由微波换能器产生和感测的微波信号的回波。 微处理器基于来自产品的微波回声和来自馈电喇叭的微波回波确定产品的高度。 微处理器补偿通过波导的传播延迟对具有反馈喇叭回波的高度测量的影响，并提供与罐中产品的高度相关的输出。

    Process transmitter communication circuit
    3.
    发明授权
    Process transmitter communication circuit 失效
    过程变送器通讯电路

    公开(公告)号：US6006338A

    公开(公告)日：1999-12-21

    申请号：US890169

    申请日：1997-07-09

    申请人： Randy J. Longsdorf ,  Grant B. Edwards ,  Richard L. Nelson ,  David L. Pederson

    发明人： Randy J. Longsdorf ,  Grant B. Edwards ,  Richard L. Nelson ,  David L. Pederson

    IPC分类号： G05B19/418 ,  G01C25/00

    CPC分类号： G05B19/4185 ,  Y02P90/18

    摘要： A process transmitter communications circuit has link terminals which are coupled to a process link, which supplies power to the circuit. A power source is coupled to one of the link terminals and is independent from the power supplied from the process link. Communications circuitry is coupled to the power source and link terminals, which transmits a transmitter signal over the process link, through the link terminals. A power sensing component is coupled to at least one of the link terminals and the communications circuitry and senses whether the power supplied by the process link is inadequate to transmit the transmitter signal. A power control component is coupled to the power source, the link terminals and the communications circuitry and selectively applies power from the power source to the communications circuitry for transmitting the transmitter signal when the power sensing component senses there is inadequate power supplied by the process link.

    摘要翻译： 过程发射机通信电路具有耦合到处理链路的链路终端，该过程链路向电路供电。 电源耦合到链路终端中的一个，并且独立于从过程链路提供的电力。 通信电路耦合到电源和链路终端，电源和链路终端通过链​​路终端在过程链路上发送发射机信号。 功率感测组件耦合到链路终端和通信电路中的至少一个，并且感测由过程链路提供的功率是否不足以发送发射机信号。 功率控制部件耦合到电源，链路终端和通信电路，并且当功率感测部件感测到由处理链路提供的不足的功率时，从电源将功率选择性地施加到用于发送发射机信号的通信电路 。