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    • 5. 发明授权
    • Modular process transmitter having a scalable EMI/RFI filtering architecture
    • 具有可扩展的EMI / RFI滤波架构的模块化过程变送器
    • US06593857B1
    • 2003-07-15
    • US09638181
    • 2000-07-31
    • Weston RoperTodd M. BergeDavid G. TysonBrian L. WestfieldRichard L. Nelson
    • Weston RoperTodd M. BergeDavid G. TysonBrian L. WestfieldRichard L. Nelson
    • G08C1900
    • G01D1/00G01L13/026G01L19/0084G01L19/0663G01L19/069G01L19/083H01R13/527H01R29/00Y10S439/912Y10T29/49002
    • 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.
    • 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。
    • 6. 发明授权
    • Process control transmitter having an externally accessible DC circuit common
    • 具有外部可访问的DC电路的过程控制变送器是公共的
    • US06504489B1
    • 2003-01-07
    • US09571111
    • 2000-05-15
    • Brian L. WestfieldWeston RoperRichard L. Nelson
    • Brian L. WestfieldWeston RoperRichard L. Nelson
    • G08C1900
    • G08C19/02
    • 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.
    • 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。