Modular process transmitter having a scalable EMI/RFI filtering architecture
    5.
    发明授权
    Modular process transmitter having a scalable EMI/RFI filtering architecture 有权
    具有可扩展的EMI / RFI滤波架构的模块化过程变送器

    公开(公告)号:US06593857B1

    公开(公告)日:2003-07-15

    申请号:US09638181

    申请日:2000-07-31

    IPC分类号: G08C1900

    摘要: A modular process transmitter having a scalable EMI/RFI filtering architecture includes a unitized sensor module and a transmitter module. The unitized sensor module is adapted to operate as a stand-alone process transmitter. The transmitter module can couple to the unitized sensor module to expand the capabilities of the unitized sensor module. The unitized sensor module includes a sensor housing, a sensor circuit and a removable sensor EMI/RFI filtering circuit. The sensor circuit provides a sensor output in accordance with either a local format or a first communication protocol. The sensor EMI/RFI filtering circuit filters noise in accordance with the first communication protocol. The transmitter module includes a transmitter module housing, a communications circuit, and a transmitter module EMI/RFI filtering circuit. The communications circuit is adapted to receive the sensor output from the sensor circuit in the local format and generate a scalable output in accordance with a second communication protocol. The transmitter module EMI/RFI filtering circuit is adapted to replace the sensor EMI/RFI filtering circuit and filter noise in accordance with the second communication protocol.

    摘要翻译: 具有可扩展EMI / RFI滤波架构的模块化过程变送器包括单元化传感器模块和发射器模块。 单元化传感器模块适用于独立的过程变送器。 发射机模块可以耦合到单元化的传感器模块,以扩大组合式传感器模块的功能。 组合式传感器模块包括传感器外壳,传感器电路和可移动传感器EMI / RFI滤波电路。 传感器电路根据本地格式或第一通信协议提供传感器输出。 传感器EMI / RFI滤波电路根据第一个通信协议对噪声进行滤波。 发射机模块包括发射机模块外壳,通信电路和发射机模块EMI / RFI滤波电路。 通信电路适于以本地格式从传感器电路接收传感器输出,并根据第二通信协议生成可缩放的输出。 发射机模块EMI / RFI滤波电路适用于根据第二通信协议来替代传感器EMI / RFI滤波电路和滤波器噪声。

    Process control transmitter having an externally accessible DC circuit common
    6.
    发明授权
    Process control transmitter having an externally accessible DC circuit common 有权
    具有外部可访问的DC电路的过程控制变送器是公共的

    公开(公告)号:US06504489B1

    公开(公告)日:2003-01-07

    申请号:US09571111

    申请日:2000-05-15

    IPC分类号: G08C1900

    CPC分类号: G08C19/02

    摘要: Disclosed is a process control transmitter having an externally accessible DC circuit common that eliminates the need to perform level shifting of signals communicated between the transmitter and external processing electronics. The process control transmitter includes first, second and third terminals which feedthrough a housing. Circuitry contained in the housing is coupled to the first, second and third terminals and is adapted to communicate information to external processing electronics through the second and third terminals using a digital signal that is regulated relative to a DC common that is coupled to the second terminal. External processing electronics can couple to the second and third terminals and interpret the digital signal without having to perform level-shifting adjustments.

    摘要翻译: 公开了一种具有外部可访问的DC电路的过程控制发送器,其不需要执行在发射器和外部处理电子器件之间传送的信号的电平移位。 过程控制变送器包括穿过壳体的第一,第二和第三端子。 包含在壳体中的电路耦合到第一,第二和第三终端,并且适于使用相对于耦合到第二终端的DC公共端调节的数字信号通过第二和第三终端将信息传送到外部处理电子设备 。 外部处理电子器件可以耦合到第二和第三端子并且解释数字信号,而不必进行电平移位调整。

    Process transmitter with local databus
    7.
    发明授权
    Process transmitter with local databus 有权
    使用本地数据总线处理变送器

    公开(公告)号:US06765968B1

    公开(公告)日:2004-07-20

    申请号:US09672338

    申请日:2000-09-28

    IPC分类号: H04B300

    CPC分类号: G01D11/24 G01D1/00

    摘要: An industrial process control system includes a remote transmitter that measures a process variable to transmit data over a process control loop. A local databus interface includes an active current source and is configured to transmit and/or receive data on a local databus. The local databus includes a signaling wire operated to a high signal level during idle communications and modulated between the high and a low signal level during data communication. The active current source is coupled to the signaling wire of the databus to limit current drawn by the signaling wire during a low signal level.

    摘要翻译: 工业过程控制系统包括测量通过过程控制回路传输数据的过程变量的远程变送器。 本地数据总线接口包括有源电流源,并配置为在本地数据总线上传输和/或接收数据。 本地数据总线包括在空闲通信期间操作为高信号电平的信号线,并且在数据通信期间在高信号电平和低信号电平之间进行调制。 有源电流源耦合到数据总线的信令线,以限制信号线在低信号电平期间汲取的电流。

    Selectable on-off logic modes for a sensor module
    8.
    发明授权
    Selectable on-off logic modes for a sensor module 有权
    传感器模块的可选开关逻辑模式

    公开(公告)号:US06484107B1

    公开(公告)日:2002-11-19

    申请号:US09519781

    申请日:2000-03-07

    IPC分类号: G06F1900

    摘要: A sensor module has an outer module housing with an fluid inlet and a feedthrough with five electrical contacts. A transducer circuit in the module has a sensor connected to the inlet, a regulator connected to contacts 1, 2 and a transceiver providing a serial output to contact 3. A logic circuit is selectable to a first mode of operation in which the logic circuit generates ON-OFF logic levels on contacts 4, 5 or it can be selected to a second mode of operation in which the logic circuit detects ON-OFF logic levels on the contacts 4, 5.

    摘要翻译: 传感器模块具有外部模块壳体,其具有流体入口和具有五个电触点的馈通。 模块中的换能器电路具有连接到入口的传感器,连接到触点1,2的调节器和向接点3提供串行输出的收发器。逻辑电路可选择为逻辑电路产生的第一操作模式 触点4,5上的ON-OFF逻辑电平,或者可以选择其中逻辑电路检测触点4,5上的ON-OFF逻辑电平的第二操作模式。

    Manual powered process transmitter
    10.
    发明授权
    Manual powered process transmitter 有权
    手动式过程变送器

    公开(公告)号:US07490516B2

    公开(公告)日:2009-02-17

    申请号:US11339891

    申请日:2006-01-26

    IPC分类号: G01D11/24

    CPC分类号: H02K7/1861 G01D21/00

    摘要: A process transmitter includes a manually operated power generator to provide electrical power to sense a process variable, produce an output based on the sensed process variable, and provide a display of the output.

    摘要翻译: 过程变送器包括手动操作的发电机,以提供用于感测过程变量的电力,基于感测的过程变量产生输出,并提供输出的显示。