Protection against the effects of condensate bridges

    公开(公告)号:US20060284626A1

    公开(公告)日:2006-12-21

    申请号:US10546763

    申请日:2004-02-12

    IPC分类号: H04B7/00 G01R27/08

    CPC分类号: G01F23/2966 G01F23/2968

    摘要: Apparatus for measuring and/or monitoring a process variable of a medium. The apparatus includes: an oscillatable unit; a driver/receiver unit, which excites the oscillatable unit to oscillate, and/or which receives its oscillations; a control/evaluation unit, which controls the driver/receiver unit, and/or which evaluates the oscillations of the oscillatable unit; and at least one transmitting line and one receiving line between the control/evaluation unit and the driver/receiver unit. At least a third line is provided, which is embodied and arranged in a manner such that it is located between the transmitting line and the receiving line, and is connected with a voltage source, which has an output impedance, which is smaller than the impedance of a condensate bridge.

    Protection against the effects of condensate bridges
    2.
    发明授权
    Protection against the effects of condensate bridges 有权
    防止冷凝桥的影响

    公开(公告)号:US07513151B2

    公开(公告)日:2009-04-07

    申请号:US10546763

    申请日:2004-02-12

    IPC分类号: G01F23/00

    CPC分类号: G01F23/2966 G01F23/2968

    摘要: Apparatus for measuring and/or monitoring a process variable of a medium. The apparatus includes: an oscillatable unit; a driver/receiver unit, which excites the oscillatable unit to oscillate, and/or which receives its oscillations; a control/evaluation unit, which controls the driver/receiver unit, and/or which evaluates the oscillations of the oscillatable unit; and at least one transmitting line and one receiving line between the control/evaluation unit and the driver/receiver unit. At least a third line is provided, which is embodied and arranged in a manner such that it is located between the transmitting line and the receiving line, and is connected with a voltage source, which has an output impedance, which is smaller than the impedance of a condensate bridge.

    摘要翻译: 用于测量和/或监测介质的过程变量的装置。 该装置包括:可振荡单元; 激励可振荡单元振荡的驱动器/接收器单元和/或接收其振荡的驱动器/接收器单元; 控制/评估单元,其控制驱动器/接收器单元和/或评估可振荡单元的振荡; 以及控制/评估单元和驱动器/接收器单元之间的至少一个传输线和一个接收线。 提供至少第三条线,其以使得它位于传输线路和接收线路之间的方式被实施和布置,并且与具有小于阻抗的输出阻抗的电压源连接 的冷凝桥。

    Apparatus for determining at least one process variable
    3.
    发明授权
    Apparatus for determining at least one process variable 有权
    用于确定至少一个过程变量的装置

    公开(公告)号:US09423287B2

    公开(公告)日:2016-08-23

    申请号:US13519513

    申请日:2010-11-11

    摘要: An apparatus and method for determining at least one process variable of a medium in a container or in a pipeline. The apparatus including: at least a first element and a second element, which are necessary components of the apparatus for determining the process variable and which contact at a contact location, which is exposed to a process temperature. The first element comprises a first material, and the second element comprises a second material. The first material and the second material are selected and matched to one another in such a manner that at the contact location between the first material and the second material a thermovoltage dependent on the difference between the process temperature and a reference temperature arises; and a temperature determining unit measures the thermovoltage and determines the process temperature therefrom.

    摘要翻译: 一种用于确定容器或管道中的介质的至少一个过程变量的装置和方法。 该装置包括:至少第一元件和第二元件,其是用于确定过程变量的装置的必要部件,以及暴露于处理温度的接触位置处的哪个接触。 第一元件包括第一材料,第二元件包括第二材料。 第一材料和第二材料被选择并彼此匹配,使得在第一材料和第二材料之间的接触位置处产生依赖于工艺温度和参考温度之间的差异的热电偶; 并且温度确定单元测量热电压并从其确定处理温度。

    Method for determining and/or monitoring a process variable of a medium, and corresponding apparatus
    4.
    发明授权
    Method for determining and/or monitoring a process variable of a medium, and corresponding apparatus 有权
    用于确定和/或监视介质的过程变量的方法以及相应的装置

    公开(公告)号:US08442782B2

    公开(公告)日:2013-05-14

    申请号:US12449308

    申请日:2008-02-13

    摘要: A method for determining and/or monitoring a process variable of a medium, wherein a mechanically oscillatable unit is supplied with an exciter signal wherein a received signal coming from the mechanically oscillatable unit is received, and wherein the exciter signal is produced in such a manner, that a phase difference between the exciter signal and the received signal equals a predeterminable phase value. A criterion for judging the determining of the phase difference between the exciter signal and the received signal, or a signal dependent on the exciter signal or on the received signal, is established; in the case, in which the criterion for judging the determining of the phase difference is fulfilled, tuning of the phase difference is closed-loop controlled; and, in the alternative case, tuning of the phase difference is open-loop controlled. An apparatus associated with the method is also disclosed.

    摘要翻译: 一种用于确定和/或监测介质的过程变量的方法,其中向机械振荡单元提供激励器信号,其中接收到来自机械振荡单元的接收信号,并且其中以这种方式产生激励器信号 激励器信号和接收信号之间的相位差等于可预定的相位值。 建立用于判断激励器信号和接收信号之间的相位差的确定的标准,或者取决于激励器信号或接收信号的信号。 在满足判断相位差判定基准的情况下,相位差的调谐是闭环控制的, 并且在替代情况下,相位差的调谐是开环控制的。 还公开了与该方法相关联的装置。

    Apparatus for determining and/or monitoring a process variable of a medium
    5.
    发明授权
    Apparatus for determining and/or monitoring a process variable of a medium 有权
    用于确定和/或监视介质的过程变量的装置

    公开(公告)号:US07818990B2

    公开(公告)日:2010-10-26

    申请号:US11597854

    申请日:2005-05-23

    IPC分类号: G01F25/00

    摘要: An apparatus for determining and/or monitoring at least one process variable of a medium, and includes a sensor unit, a feedback electronics and a supplemental electronics. The sensor unit, feedback electronics and supplemental electronics form a first oscillatory circuit, which oscillates with at least one resonance frequency (ω1) and/or with a resonance frequency (ωres) within at least one resonance frequency range. The feedback electronics and the supplemental electronics form a second oscillatory circuit, which oscillates at a resonance frequency (ωcablebreak), which differs from the resonance frequency (ωres, ω1) of the first oscillatory circuit.

    摘要翻译: 一种用于确定和/或监视介质的至少一个过程变量的装置,并且包括传感器单元,反馈电子装置和补充电子装置。 传感器单元,反馈电子器件和补充电子器件形成第一振荡电路,其以至少一个谐振频率范围内的至少一个谐振频率(ω1)和/或谐振频率(ωres)振荡。 反馈电子部件和补充电子部件形成第二振荡电路,其以与第一振荡电路的谐振频率(ωres,ω1)不同的谐振频率(ωcablebreak)振荡。

    Device for operating a vibrating unit of a vibration resonator
    6.
    发明授权
    Device for operating a vibrating unit of a vibration resonator 有权
    用于操作振动谐振器的振动单元的装置

    公开(公告)号:US07327200B2

    公开(公告)日:2008-02-05

    申请号:US10538841

    申请日:2003-12-06

    申请人: Sascha D'Angelico

    发明人: Sascha D'Angelico

    IPC分类号: H03B5/32

    摘要: A device for operating an oscillatable unit of a vibration resonator, including a piezodrive, which is connected with the oscillatable unit, and feedback electronics. The feedback electronics excites the piezodrive to oscillate by means of a periodic exciter signal having rising and falling edges. The response signal of the piezodrive is fed back to the feedback electronics. Present additionally is at least one peak compensation unit, which removes from the response signal at least one interference signal, which results from the charge-reversal process of the piezodrive. Provided in the peak compensation unit, is at least one suppression unit having at least one switch element. The suppression unit is controlled by the exciter signal of the feedback electronics in such a manner that the piezodrive is connected conductively to ground during the rising and/or during the falling edges of the exciter signal.

    摘要翻译: 用于操作振动谐振器的可振荡单元的装置,包括与可振荡单元连接的压电驱动器和反馈电子器件。 反馈电子器件通过具有上升沿和下降沿的周期性激励器激励压电驱动器振荡。 压电驱动器的响应信号被反馈到反馈电子器件。 另外存在至少一个峰值补偿单元,其从响应信号中去除由压控驱动器的电荷反转过程产生的至少一个干扰信号。 在峰值补偿单元中设置有至少一个具有至少一个开关元件的抑制单元。 抑制单元由反馈电子装置的激励器信号控制,使得压电传感器在激励器信号的上升沿和/或下降沿期间导电地连接到地。

    Method and apparatus for establishing and/or monitoring the filling level of a medium in a container
    7.
    发明授权
    Method and apparatus for establishing and/or monitoring the filling level of a medium in a container 有权
    用于建立和/或监测容器中的介质的填充水平的方法和装置

    公开(公告)号:US06389891B1

    公开(公告)日:2002-05-21

    申请号:US09577100

    申请日:2000-05-24

    IPC分类号: G01F2300

    摘要: The invention relates to a method and an apparatus for establishing and/or monitoring the filling level of a medium in a container and to the determination of the density of a medium in a container. It is the object of the invention to propose a method and an apparatus which permit reliable determination and/or monitoring of the filling level or the density of a medium. With reference to the apparatus according to the invention, the object is achieved by virtue of the fact that at least a first mode and a second mode of the oscillations of the oscillable unit (2) are evaluated, and the evaluated modes are used to detect a change in mass at the oscillable unit (2).

    摘要翻译: 本发明涉及一种用于建立和/或监测容器中的介质的填充水平以及确定容器中的介质的密度的方法和装置。本发明的目的是提出一种方法和 允许可靠地确定和/或监测介质的填充水平或密度的装置。参考根据本发明的装置,该目的是通过以下事实实现的:至少第一模式和第二模式 评估可振动单元(2)的振荡,并且使用评估模式来检测可振荡单元(2)处的质量变化。

    Device for determining and/or monitoring at least one predetermined fill level

    公开(公告)号:US09989398B2

    公开(公告)日:2018-06-05

    申请号:US13817729

    申请日:2011-07-11

    IPC分类号: G01F23/22 G01F23/296

    摘要: A device for determining a predetermined fill level of a liquid in a container, with a sensor unit, comprising a unit capable of oscillating mechanically, a transmitter unit, and a receiver unit, which is electrically and mechanically coupled to the transmitter unit, and which transduces the oscillation of the unit capable of oscillating into an electrical receiving signal. An electronic unit, comprising a regulating unit, which regulates a phase difference that exists between the electrical transmission signal and electrical receiving signal to a determined value at which the unit capable of oscillating conducts oscillations at a resonant frequency, and which forms an oscillation circuit with the transmitter unit, receiving unit and the unit capable of oscillating. The electronic unit comprises a compensation path with a compensation unit, which for compensating additional signal components in the receiving signal, which results from the mechanical and/or electrical coupling between transmitter unit and receiver unit, at least intermittently produces a compensation signal from the transmission signal and supplies this compensation signal to the receiving signal. The compensation unit produces the compensation signal in a way such that the compensation signal is opposite to the additional signal components in the receiving signal.

    Apparatus for Determining at Least One Process Variable
    9.
    发明申请
    Apparatus for Determining at Least One Process Variable 有权
    用于确定最少一个过程变量的设备

    公开(公告)号:US20120285239A1

    公开(公告)日:2012-11-15

    申请号:US13519513

    申请日:2010-11-11

    IPC分类号: G01N25/00 G01F23/00 G01F23/28

    摘要: An apparatus and method for determining at least one process variable of a medium in a container or in a pipeline. The apparatus including: at least a first element and a second element, which are necessary components of the apparatus for determining the process variable and which contact at a contact location, which is exposed to a process temperature. The first element comprises a first material, and the second element comprises a second material. The first material and the second material are selected and matched to one another in such a manner that at the contact location between the first material and the second material a thermovoltage dependent on the difference between the process temperature and a reference temperature arises; and a temperature determining unit measures the thermovoltage and determines the process temperature therefrom.

    摘要翻译: 一种用于确定容器或管道中的介质的至少一个过程变量的装置和方法。 该装置包括:至少第一元件和第二元件,其是用于确定过程变量的装置的必要部件,以及暴露于处理温度的接触位置处的哪个接触。 第一元件包括第一材料,第二元件包括第二材料。 第一材料和第二材料被选择并彼此匹配,使得在第一材料和第二材料之间的接触位置处产生依赖于工艺温度和参考温度之间的差异的热电偶; 并且温度确定单元测量热电压并从其确定处理温度。

    Device for monitoring a predetermined filling level of a measuring medium in a container
    10.
    发明申请
    Device for monitoring a predetermined filling level of a measuring medium in a container 有权
    用于监测容器中的测量介质的预定填充水平的装置

    公开(公告)号:US20060131994A1

    公开(公告)日:2006-06-22

    申请号:US10524538

    申请日:2003-07-18

    IPC分类号: H01L41/08

    摘要: A vibration detector for determining and/or monitoring a predetermined fill level in a container. The detector includes an oscillatable unit, a driver/receiver unit and an evaluation unit. The vibration detector can, additionally, be used as a viscosity sensor or as a density sensor. For providing a multivariable sensor, a microprocessor is provided in the oscillation circuit formed of oscillatable unit and feedback electronics. The microprocessor corrects the phase of the feedback electronics over a predetermined frequency bandwidth in such a way that the sum of the phases of the feedback electronics and the microprocessor follows a predetermined function f(v).

    摘要翻译: 一种用于确定和/或监测容器中的预定填充水平的振动检测器。 检测器包括可振荡单元,驱动器/接收器单元和评估单元。 此外,振动检测器可用作粘度传感器或密度传感器。 为了提供多变量传感器,在由振荡单元和反馈电子器件组成的振荡电路中提供微处理器。 微处理器以预定的频率带宽校正反馈电子装置的相位,使得反馈电子装置和微处理器的相位之和遵循预定的函数f(v)。