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公开(公告)号：US07102584B2
公开(公告)日：2006-09-05
申请号：US10675651
申请日：2003-09-30
IPC分类号： H01O13/00
CPC分类号： H01Q1/22 , G01F23/284 , H01Q13/06 , H01Q19/08
摘要： A process control instrument comprises a control for generating or receiving a high frequency signal. A waveguide comprises a cylindrical housing closed at one end by a rear wall. A loop launcher is operatively connected to the control and comprises a wire having a first straight leg electrically connected at one end to the control and extending into the waveguide a first select length. A second straight leg is connected at one end to the rear wall and extends into the waveguide a second select length, greater than the first select length. A curved middle section connects the other ends of the first and second straight legs. An antenna is operatively coupled to the waveguide.
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公开(公告)号：US07106248B2
公开(公告)日：2006-09-12
申请号：US11204727
申请日：2005-08-16
CPC分类号： H01Q1/22 , G01F23/284 , H01Q13/06 , H01Q19/08
摘要： A process control instrument comprises a control for generating or receiving a high frequency signal. A waveguide comprises a cylindrical housing closed at one end by a rear wall. A loop launcher is operatively connected to the control and comprises a wire having a first straight leg electrically connected at one end to the control and extending into the waveguide a first select length. A second straight leg is connected at one end to the rear wall and extends into the waveguide a second select length, greater than the first select length. A curved middle section connects the other ends of the first and second straight legs. An antenna is operatively coupled to the waveguide.
摘要翻译： 过程控制仪器包括用于产生或接收高频信号的控制。 波导包括在一端由后壁封闭的圆柱形壳体。 环路发射器可操作地连接到控制器并且包括线，其具有在一端电连接到控制并且延伸到波导中的第一选择长度的第一直脚。 第二直腿在一端连接到后壁并且延伸到波导中大于第一选择长度的第二选择长度。 弯曲的中间部分连接第一和第二直腿的另一端。 天线可操作地耦合到波导。
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公开(公告)号：US20090031799A1
公开(公告)日：2009-02-05
申请号：US11888052
申请日：2007-07-31
申请人： John S. Benway
发明人： John S. Benway
摘要： A float level sensing system comprises a float and an elongated probe for sensing position of the float. The float is mounted proximate the probe so that the float floats atop the process material. The float drops outside a sensing range of the probe responsive to a failure of the float. A sensing circuit is operatively associated with the probe for measuring a characteristic of the probe representing position of the float and is operative to indicate a fault condition if the float is outside of the sensing range of the probe.
摘要翻译： 浮子液位感测系统包括浮子和用于感测浮子位置的细长探头。 浮子安装在探头附近，以便浮子浮在工艺材料上。 响应于浮子的故障，浮子在探头的感测范围之外落下。 感测电路与探头可操作地相关联，用于测量表示浮子的位置的探针的特性，并且如果浮子在探针的感测范围之外，则可操作以指示故障状况。
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公开(公告)号：US06690320B2
公开(公告)日：2004-02-10
申请号：US09878895
申请日：2001-06-11
IPC分类号： G01S1300
CPC分类号： G01S13/003 , G01F23/284 , G01S13/88
摘要： A time domain reflectometry measuring instrument uses a microprocessor that provides added functionality and capabilities. The circuit electronics and probe are tested and calibrated at the factory. Installation and commissioning by the user is simple. The user installs the probe. The transmitter is attached to the probe. The user connects a standard shielded twisted pair to the electronics. Power is applied and the device immediately displays levels. A few simple parameters may need to be entered such as output characteristics and the process material dielectric constant.
摘要翻译： 时域反射测量仪使用提供附加功能和功能的微处理器。 电路电路和探头在工厂进行了测试和校准。 用户的安装调试很简单。 用户安装探头。 变送器连接到探头。 用户将标准屏蔽双绞线连接到电子设备。 电源被施加，设备立即显示电平。 可能需要输入一些简单的参数，例如输出特性和工艺材料介电常数。
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