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公开(公告)号：US20090013800A1
公开(公告)日：2009-01-15
申请号：US12167257
申请日：2008-07-03
CPC分类号： G01F1/849 , G01F1/8413 , G01F1/8427 , G01F1/8431 , G01F1/844 , G01F1/8472 , G01F1/8481
摘要： Coriolis mass flowmeter with a Coriolis tube and with an optical detection device, which optical detection device comprises at least one optical sensor for generating a signal that is representative of the movement of the Coriolis tube, said optical sensor comprising a light source and a photosensitive sensor, wherein the optical detection device comprises means for applying a constant voltage across the photosensitive sensor during operation independently of the current generated by the photosensitive sensor in response to incident light, as well as means for determining the value of the current generated by the photosensitive sensor and converting it into an output signal.
摘要翻译： 科里奥利质量流量计具有科里奥利管和光学检测装置，该光学检测装置包括至少一个用于产生代表科里奥利管的运动的信号的光学传感器，所述光学传感器包括光源和光敏传感器 ，其中所述光学检测装置包括用于在独立于由光敏传感器响应入射光产生的电流的操作期间在光敏传感器两端施加恒定电压的装置，以及用于确定由光敏传感器产生的电流值的装置 并将其转换为输出信号。
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公开(公告)号：US20080148868A1
公开(公告)日：2008-06-26
申请号：US12043977
申请日：2008-03-07
IPC分类号： G01F1/84
CPC分类号： G01F1/8422 , G01F1/8427 , G01F1/8431 , G01F1/8472 , G01F1/8486
摘要： A mass flowmeter of the Coriolis type with a tube through which a medium flows during operation and with excitation elements for causing the entire tube or part thereof to perform a rotational vibration about a primary axis of rotation during operation. The excitation elements are electromagnetic and do not make contact with the tube during operation and have no components that are fastened to the tube. More The tube is made of an electrically conducting material, and the excitation elements include first members for causing an electric current to flow through the tube during operation and second elements for generating a magnetic field at the area of a portion of the tube. The magnetic field is perpendicular to the direction of the current and in operation either the current or the magnetic field changes its sign periodically.
摘要翻译： 具有科里奥利型的质量流量计，其中具有介质在操作期间流动的管和用于使整个管或其一部分在操作期间围绕主旋转轴进行旋转振动的激励元件的管。 励磁元件是电磁的，并且在操作期间不与管接触，并且没有固定到管的部件。 更多管由导电材料制成，并且激发元件包括用于在操作期间使电流流过管的第一构件和用于在管的一部分区域处产生磁场的第二元件。 磁场垂直于电流的方向，并且在运行中，电流或磁场周期性地改变其符号。
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公开(公告)号：US20070295079A1
公开(公告)日：2007-12-27
申请号：US11798983
申请日：2007-05-18
申请人： Jeroen Wouter Bos , Ronald Wilhelmus Johannes Hoitink , Johannes Henricus Besseling , Joost Conrad Lotters
发明人： Jeroen Wouter Bos , Ronald Wilhelmus Johannes Hoitink , Johannes Henricus Besseling , Joost Conrad Lotters
IPC分类号： G01F1/68
CPC分类号： G01F1/6847 , G01F15/14 , G01F15/18
摘要： A flow sensor of the thermal type having a U-shaped sensor tube with two legs and a connecting limb with two adjoining electrical resistance elements, and with a housing. The sensor tube has an inlet side and an outlet side. The housing has a first and a second housing part of a thermally well-conducting material, each with an inner surface provided with cavities and with an outer surface. The housing parts are placed with their inner surfaces against each other, while the U-shaped sensor tube has a main surface that extends parallel to the inner surfaces. The housing parts surround the connecting limb and the legs of the U-shaped sensor tube such that the sensor tube is thermally clamped in between the housing parts in two locations: a first location situated between its inlet side and the upstream resistance element, and a second location situated between its outlet side and the downstream resistance element.
摘要翻译： 热式流量传感器具有具有两个支腿的U形传感器管和具有两个邻接的电阻元件的连接臂以及壳体。 传感器管具有入口侧和出口侧。 壳体具有导热材料的第一和第二壳体部分，每个壳体具有设置有空腔和外表面的内表面。 壳体部件的内表面彼此相对放置，而U形传感器管具有平行于内表面延伸的主表面。 壳体部分围绕连接肢和U形传感器管的腿，使得传感器管被热夹紧在两个位置之间的壳体部分之间：位于其入口侧和上游阻力元件之间的第一位置，以及 位于其出口侧和下游阻力元件之间的第二位置。
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公开(公告)号：US20100000333A1
公开(公告)日：2010-01-07
申请号：US12514020
申请日：2007-11-09
申请人： Arno Willem Frederik Volker , Huibert Blokland , Johannes Franciscus Maria Velthuis , Joost Conrad Lotters
发明人： Arno Willem Frederik Volker , Huibert Blokland , Johannes Franciscus Maria Velthuis , Joost Conrad Lotters
IPC分类号： G01F1/708
CPC分类号： G01F1/7044 , G01F1/6882 , G01F1/7082
摘要： Fluid flows through a conduit. To measure flow speed the fluid is heated at a heating location in the conduit with a time-dependent heating strength. A speed of sound in fluid flowing in the conduit is measured at a plurality of sensing locations downstream from said heating location. The flow speed of the fluid is determined from a delay with which the time dependence is detected in the sound speeds measured at said sensing locations. In an embodiment a frequency of the variation of heating strength that is used to determine the flow speed is selected automatically dependent on the flow speed and/or other circumstances.
摘要翻译： 流体流过管道。 为了测量流速，流体在管道中的加热位置被加热，具有时间依赖的加热强度。 在所述加热位置下游的多个感测位置处测量在导管中流动的流体中的声速。 从在所述检测位置处测量的声速中检测到时间依赖性的延迟来确定流体的流速。 在一个实施例中，用于确定流速的加热强度变化的频率根据流速和/或其他情况自动选择。
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