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1. 发明授权

US4788488A Continuous condition sensing system 失效
公开(公告)号：US4788488A
公开(公告)日：1988-11-29
申请号：US917958
申请日：1986-10-14
申请人： L. Jonathan Kramer , Steven R. Peterson , Herbert A. Shauger, Jr.
发明人： L. Jonathan Kramer , Steven R. Peterson , Herbert A. Shauger, Jr.
IPC分类号： G01R27/26
CPC分类号： G01R27/2605
摘要： A probe developing an admittance with a material whose condition is to be continuously measured is capacitively coupled with a variable frequency oscillator, preferably one having a digital output stage, for generating a variable frequency signal having a period varying with the admittance developed at the probe. Both the oscillator input and output are capacitively coupled to the probe. In a preferred embodiment, a set point circuit including a plurality of resistors coupled in parallel with the oscillator output and a plurality of switches coupled in parallel with the probe conductor and each with a different one of the resistor, provides easy circuit adjustment for use of the system with a variety of materials. A preferred digital circuit employing a pair of flip flops, fixed timer and one shot generate a fixed period variable duration duty cycle digital voltage level signal for transmission, if desired, or for conversion into a variable current signal.

2. 发明授权

US5045797A Continuous condition sensing system determining liquid level by admittance measurement 失效
标题翻译：连续状态检测系统通过导纳测量确定液位
公开(公告)号：US5045797A
公开(公告)日：1991-09-03
申请号：US495733
申请日：1990-03-19
申请人： L. Jonathan Kramer , Steven R. Petersen , Herbert A. Shauger, Jr.
发明人： L. Jonathan Kramer , Steven R. Petersen , Herbert A. Shauger, Jr.
IPC分类号： G01R27/26
CPC分类号： G01R27/2605
摘要： A probe developing an admittance with a material whose condition is to be continuously measured is capacitively coupled with a variable frequency oscillator, preferably one having a digital output stage, for generating a variable frequency signal having a period varying with the admittance developed at the probe. Both the oscillator input and output are capacitively coupled to the probe. In a preferred embodiment, a set point circuit including a plurality of resistors coupled in parallel with the oscillator output and a plurality of switches coupled in parallel with the probe conductor and each with a different one of the resistor, provides easy circuit adjustment for use of the system with a variety of materials. A preferred digital circuit employing a pair of flip flops, fixed timer and one shot generate a fixed period variable duration duty cycle digital voltage level signal for transmission, if desired, or for conversion into a variable current signal.
摘要翻译：与要连续测量条件的材料形成导纳的探针与可变频率振荡器（优选具有数字输出级的振荡器）电容耦合，用于产生具有随着在探针处形成的导纳而变化的周期的可变频率信号。振荡器的输入和输出均与电容电容耦合。在优选实施例中，设置点电路包括与振荡器输出端并联耦合的多个电阻器以及与探针导体并联耦合的多个开关，并且每个具有不同的电阻器，提供了简便的电路调整，该系统具有各种材料。采用一对触发器，固定定时器和一次触发的优选数字电路产生固定周期可变持续时间占空比数字电压电平信号，用于传输，如果需要，或用于转换成可变电流信号。

3. 发明授权

US5278513A Continuous condition sensing system 失效
标题翻译：连续状态检测系统
公开(公告)号：US5278513A
公开(公告)日：1994-01-11
申请号：US748960
申请日：1991-08-22
申请人： L. Jonathan Kramer , Steven R. Petersen , Herbert A. Shauger, Jr.
发明人： L. Jonathan Kramer , Steven R. Petersen , Herbert A. Shauger, Jr.
IPC分类号： G01R27/26
CPC分类号： G01R27/2605
摘要： A probe developing an admittance with a material whose condition is to be continuously measured is capacitively coupled with a variable frequency oscillator, preferably one having a digital output stage, for generating a variable frequency signal having a period varying with the admittance developed at the probe. Both the oscillator input and output are capacitively coupled to the probe. In a preferred embodiment, a set point circuit including a plurality of resistors coupled in parallel with the oscillator output and a plurality of switches coupled in parallel with the probe conductor and each with a different one of the resistor, provides easy circuit adjustment for use of the system with a variety of materials. A preferred digital circuit employing a pair of flip flops, fixed timer and one shot generate a fixed period variable duration duty cycle digital voltage level signal for transmission, if desired, or for conversion into a variable current signal.
摘要翻译：与要连续测量条件的材料形成导纳的探针与可变频率振荡器（优选具有数字输出级的振荡器）电容耦合，用于产生具有随着在探针处形成的导纳而变化的周期的可变频率信号。振荡器的输入和输出均与电容电容耦合。在优选实施例中，设置点电路包括与振荡器输出端并联耦合的多个电阻器以及与探针导体并联耦合的多个开关，并且每个具有不同的电阻器，提供了简便的电路调整，该系统具有各种材料。采用一对触发器，固定定时器和一次触发的优选数字电路产生固定周期可变持续时间占空比数字电压电平信号，用于传输，如果需要，或用于转换成可变电流信号。

4. 发明授权

US4950998A Continuous condition sensing system 失效
标题翻译：连续状态检测系统
公开(公告)号：US4950998A
公开(公告)日：1990-08-21
申请号：US222498
申请日：1988-07-21
申请人： Jonathan L. Kramer , Steven R. Petersen , Herbert A. Shauger, Jr.
发明人： Jonathan L. Kramer , Steven R. Petersen , Herbert A. Shauger, Jr.
IPC分类号： G01R27/26
CPC分类号： G01R27/2605
摘要： A probe developing an admittance with a material whose condition is to be continuously measured is capacitively coupled with a variable frequency oscillator, preferably one having a digital output stage, for generating a variable frequency signal having a period varying with the admittance developed at the probe. Both the oscillator input and output are capacitively coupled to the probe. In a preferred embodiment, a set point circuit including a plurality of resistors coupled in parallel with the oscillator output and a plurality of switches coupled in parallel with the probe conductor and each with a different one of the resistor, provides easy circuit adjustment for use of the system with a variety of materials. A preferred digital circuit employing a pair of flip flops, fixed timer and one shot generate a fixed period variable duration duty cycle digital voltage level signal for transmission, if desired, or for conversion into a variable current signal.
摘要翻译：与要连续测量条件的材料形成导纳的探针与可变频率振荡器（优选具有数字输出级的振荡器）电容耦合，用于产生具有随着在探针处形成的导纳而变化的周期的可变频率信号。振荡器的输入和输出均与电容电容耦合。在优选实施例中，设置点电路包括与振荡器输出端并联耦合的多个电阻器以及与探针导体并联耦合的多个开关，并且每个具有不同的电阻器，提供了简便的电路调整，该系统具有各种材料。采用一对触发器，固定定时器和一次触发的优选数字电路产生固定周期可变持续时间占空比数字电压电平信号，用于传输，如果需要，或用于转换成可变电流信号。

5. 发明授权

US5728945A Electromagnetic flowmeter with internally placed, laminar flow supporting, grounding electrodes 失效
标题翻译：内置电磁流量计，层流支撑，接地电极
公开(公告)号：US5728945A
公开(公告)日：1998-03-17
申请号：US781352
申请日：1997-01-21
申请人： James W. Davis , Herbert A. Shauger, Jr. , Gabor E. Vass
发明人： James W. Davis , Herbert A. Shauger, Jr. , Gabor E. Vass
IPC分类号： G01F1/58
CPC分类号： G01F1/584 , G01F1/586
摘要： An electromagnetic flowmeter comprising a body having a central channel having a measuring region, an inlet region and an outlet region. Relative to liquid flow through the central channel, the inlet region is upstream of the measuring region, and the outlet region is downstream of the measuring region. The inlet region and outlet region have diameters substantially greater than the diameter of the measuring region. A transition region extends between the inlet region and the measuring region, and a transition region extends between the measuring region and the outlet region. First and second cavities are respectively positioned in the inlet region and the outlet region, and third and fourth diametrically opposed cavities extend from the measuring region of the central channel. First and second grounding electrodes are respectively positioned in the first and second cavities, and third and fourth measuring electrodes are respectively positioned in the third and fourth cavities.
摘要翻译：一种电磁流量计，包括具有具有测量区域，入口区域和出口区域的中心通道的主体。相对于通过中心通道的液体流动，入口区域在测量区域的上游，并且出口区域在测量区域的下游。入口区域和出口区域的直径基本上大于测量区域的直径。过渡区域在入口区域和测量区域之间延伸，并且过渡区域在测量区域和出口区域之间延伸。第一和第二空腔分别位于入口区域和出口区域中，并且第三和第四直径相对的空腔从中心通道的测量区域延伸。第一和第二接地电极分别位于第一和第二空腔中，第三和第四测量电极分别位于第三和第四腔中。

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