公开(公告)号：US07634939B2

公开(公告)日：2009-12-22

申请号：US10173748

申请日：2002-06-19

申请人： Wolfgang Drahm ,  Alfred Rieder ,  Christian Matt

发明人： Wolfgang Drahm ,  Alfred Rieder ,  Christian Matt

IPC分类号： G01N11/10

CPC分类号： G01F1/849 ,  G01F1/8409 ,  G01F1/8413 ,  G01F1/8431 ,  G01F1/8436 ,  G01N11/162 ,  G08C19/02

摘要： The viscometer comprises a vibratory transducer with at least one flow tube for conducting a fluid to be measured and for producing friction forces acting in the fluid. To vibrate the at least one flow tube, an excitation assembly is provided, which in operation is traversed by an excitation current. To generate the excitation current and a viscosity value representing the viscosity of the fluid, the viscometer includes meter electronics which are connected to, and supplied with electric power from, a two-wire process control loop. The meter electronics feed a viscosity signal corresponding to the measured viscosity value into the two-wire process control loop. The viscometer is suitable for measuring a fluid flowing in a pipe, particularly in potentially explosive atmospheres.

摘要翻译： 粘度计包括具有至少一个流动管的振动换能器，用于传导要测量的流体并产生作用在流体中的摩擦力。 为了使至少一个流管振动，提供激励组件，其在运行中被激励电流穿过。 为了产生激励电流和表示流体粘度的粘度值，粘度计包括仪表电子装置，其连接到二线制过程控制回路并由二线过程控制回路供给电力。 仪表电子装置将对应于测量的粘度值的粘度信号输入到两线过程控制回路中。 粘度计适用于测量在管道中流动的流体，特别是在潜在的爆炸性环境中。

公开(公告)号：US20080127719A1

公开(公告)日：2008-06-05

申请号：US10173748

申请日：2002-06-19

申请人： Wolfgang Drahm ,  Alfred Rieder ,  Christian Matt

发明人： Wolfgang Drahm ,  Alfred Rieder ,  Christian Matt

IPC分类号： G01N11/16

CPC分类号： G01F1/849 ,  G01F1/8409 ,  G01F1/8413 ,  G01F1/8431 ,  G01F1/8436 ,  G01N11/162 ,  G08C19/02

摘要： The viscometer comprises a vibratory transducer with at least one flow tube for conducting a fluid to be measured and for producing friction forces acting in the fluid. To vibrate the at least one flow tube, an excitation assembly is provided, which in operation is traversed by an excitation current. To generate the excitation current and a viscosity value representing the viscosity of the fluid, the viscometer includes meter electronics which are connected to, and supplied with electric power from, a two-wire process control loop. The meter electronics feed a viscosity signal corresponding to the measured viscosity value into the two-wire process control loop. The viscometer is suitable for measuring a fluid flowing in a pipe, particularly in potentially explosive atmospheres.

摘要翻译： 粘度计包括具有至少一个流动管的振动换能器，用于传导要测量的流体并产生作用在流体中的摩擦力。 为了使至少一个流管振动，提供激励组件，其在运行中被激励电流穿过。 为了产生激励电流和表示流体粘度的粘度值，粘度计包括仪表电子装置，其连接到二线制过程控制回路并由二线过程控制回路供给电力。 仪表电子装置将对应于测量的粘度值的粘度信号输入到两线过程控制回路中。 粘度计适用于测量在管道中流动的流体，特别是在潜在的爆炸性环境中。

公开(公告)号：US06662120B2

公开(公告)日：2003-12-09

申请号：US10173763

申请日：2002-06-19

申请人： Wolfgang Drahm ,  Alfred Rieder ,  Christian Matt

发明人： Wolfgang Drahm ,  Alfred Rieder ,  Christian Matt

IPC分类号： G06F1700

CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/8431 ,  G01F1/8477

摘要： Such an excitation circuit is intended for use in a Coriolis mass flowmeter which is connected to, is powered exclusively from, and outputs a measurement signal exclusively via, a two-wire process control loop. The Coriolis mass flowmeter has a vibrating flow tube and an excitation assembly for vibrating the flow tube at a frequency equal or adjacent to the instantaneous mechanical resonance frequency of the flow tube. It further comprises transducer assemblies which are positioned at a given distance from each other along the flow tube and provide respective transducer signals. The excitation circuit may comprise a peak detector to which one of the transducer signals is applied as an input signal, a comparsion stage which determines a deviation of the output signal of the peak detector from an adjustable reference signal that specifies an amplitude of the vibration of the flow tube, a multiplier for the input signal to the peak detector and the output signal from the comparsion stage, and an output stage having an input connected to an output of the multiplier and supplying the excitation assembly. Instead of the multiplier, a pulse duration modulator or a DC/DC converter and a comparator may be provided.

公开(公告)号：US09134165B2

公开(公告)日：2015-09-15

申请号：US13565158

申请日：2012-08-02

申请人： Michael Kirst ,  Alfred Rieder ,  Wolfgang Drahm ,  Hao Zhu ,  Christof Huber ,  Vivek Kumar

发明人： Michael Kirst ,  Alfred Rieder ,  Wolfgang Drahm ,  Hao Zhu ,  Christof Huber ,  Vivek Kumar

IPC分类号： G01K13/12 ,  G01F25/00 ,  G01B21/08 ,  G01N3/56 ,  G01N17/00 ,  G01F1/84 ,  G01K3/04 ,  G01B11/06

CPC分类号： G01F25/0007 ,  G01B11/06 ,  G01B21/085 ,  G01F1/8436 ,  G01F1/8477 ,  G01K3/04 ,  G01N3/56 ,  G01N17/008

摘要： A method for detecting accretion or abrasion on a first measuring tube of a flow measuring device. A first temperature as a function of time is registered via a first temperature sensor, which is arranged on the first measuring tube in such a manner that, between the first temperature sensor and the medium, at least one measuring tube wall of the first measuring tube is embodied. Parallel in time, a second reference temperature as a function of time is registered by a second temperature sensor, which is spaced from the first temperature sensor and thermally coupled to the medium. Therefrom, at least one variable characteristic is determined, and accretion or abrasion on the first measuring tube is detected, if the at least one determined characteristic variable or a variable derived therefrom deviates by more than a limit value from a predetermined reference variable.

摘要翻译： 一种用于检测流量测量装置的第一测量管上的吸积或磨损的方法。 作为时间的函数的第一温度通过第一温度传感器来记录，第一温度传感器布置在第一测量管上，使得在第一温度传感器和介质之间，第一测量管的至少一个测量管壁 体现了 通过与第一温度传感器间隔开并热耦合到介质的第二温度传感器来记录作为时间的函数的第二参考温度。 由此，确定至少一个可变特性，并且如果所述至少一个确定的特征变量或其导出的变量偏离预定参考变量的极限值，则检测到第一测量管上的吸积或磨损。

公开(公告)号：US08738305B2

公开(公告)日：2014-05-27

申请号：US12662817

申请日：2010-05-05

申请人： Alfred Rieder ,  Wolfgang Drahm ,  Hao Zhu ,  Marcel Braun

发明人： Alfred Rieder ,  Wolfgang Drahm ,  Hao Zhu ,  Marcel Braun

IPC分类号： G01F7/00

CPC分类号： G01F1/8436 ,  G01F1/8477 ,  G01F25/0007

摘要： A method for detecting blockage of a measuring tube of a Coriolis flow measuring device, which has at least two measuring tubes. For this, the at least two measuring tubes are excited by at least one exciter to execute mechanical oscillations, mechanical oscillations of the measuring tubes are registered by at least one sensor and at least one measurement signal representing the mechanical oscillations is produced. At least one produced measurement signal is analyzed for the occurrence of a deviation of a resonance frequency of one measuring tube relative to a resonance frequency of the at least one other measuring tube. In case such a deviation occurs, blockage of a measuring tube is established.

摘要翻译： 一种用于检测具有至少两个测量管的科里奥利流量测量装置的测量管阻塞的方法。 为此，至少两个测量管由至少一个激励器激发以执行机械振荡，由至少一个传感器记录测量管的机械振荡，并且产生表示机械振荡的至少一个测量信号。 分析至少一个产生的测量信号，以发现一个测量管的谐振频率相对于至少另一个测量管的谐振频率的偏差的发生。 在发生这种偏差的情况下，建立测量管的堵塞。

公开(公告)号：US20090145244A1

公开(公告)日：2009-06-11

申请号：US12289169

申请日：2008-10-22

申请人： Alfred Rieder ,  Michael Fuchs ,  Wolfgang Drahm ,  Leonhard Probst

发明人： Alfred Rieder ,  Michael Fuchs ,  Wolfgang Drahm ,  Leonhard Probst

IPC分类号： G01F1/84 ,  G01F1/20

CPC分类号： G01F1/849 ,  G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8422 ,  G01F1/8427

摘要： A measuring transducer includes: a measuring tube vibrating at least at times and serving for conveying medium to be measured; a counteroscillator, which is affixed to the measuring tube on an inlet-side, to form a first coupling zone, and to the measuring tube on an outlet-side, to form a second coupling zone; an exciter mechanism for driving at least the measuring tube; as well as a sensor arrangement for registering oscillations at least of the measuring tube. During operation, the measuring tube executes, at least at times and/or at least in part, bending oscillations about an imaginary bending oscillation axis, which imaginarily connects the two coupling zones with one another. Additionally, at least a first spring element and a second spring element are included, with each of the at least two spring elements being affixed to the measuring tube and the counteroscillator spaced both from each of the two coupling zones as well as also from the exciter mechanism.

摘要翻译： 测量传感器包括：测量管至少有时振动并用于输送要测量的介质; 固定在入口侧的测量管上，形成第一耦合区，并在出口侧与测量管相连以形成第二耦合区; 用于至少驱动所述测量管的激励机构; 以及用于至少记录测量管的振荡的传感器装置。 在操作期间，测量管至少在有时和/或至少部分地执行围绕虚拟弯曲振荡轴线的弯曲振荡，该虚拟弯曲振荡轴线将两个耦合区域彼此连接起来。 此外，至少包括第一弹簧元件和第二弹簧元件，其中至少两个弹簧元件中的每一个固定到测量管和与两个联接区域中的每一个以及从激励器隔开的反倾倒器 机制。

公开(公告)号：US07523662B2

公开(公告)日：2009-04-28

申请号：US10693606

申请日：2003-10-27

申请人： Wolfgang Drahm ,  Helmut Zeislmeier ,  Alfred Rieder ,  Gabriele Fröhlich

发明人： Wolfgang Drahm ,  Helmut Zeislmeier ,  Alfred Rieder ,  Gabriele Fröhlich

IPC分类号： G01F23/28 ,  G01D11/10

CPC分类号： G01D11/10 ,  G01D11/245

摘要： The process meter comprises a sensor that can be mounted in a wall of a vessel for holding or conveying a process medium, and a meter-electronics case mechanically coupled to the sensor. In operation, the electronics case is at least intermittently subjected to vibrations either generated in the sensor itself or transmitted via the sensor. To reduce amplitudes of such vibrations of the electronics case, at least one vibration absorber is affixed to a wall of the electronics case. This vibration absorber is vibrated at least intermittently in order to dissipate vibrational energy taken into the electronic case. By the suppression of such case vibrations, spurious components in the measurement signal can be reduced to the point that a significant improvement in signal-to-noise ratio is obtained.

摘要翻译： 过程计包括可以安装在用于保持或输送处理介质的容器的壁中的传感器，以及机械地耦合到传感器的仪表电子壳体。 在操作中，电子壳体至少间歇地受到在传感器本身中产生的振动或通过传感器传输的振动。 为了减小电子机壳的振动的振幅，至少一个振动吸收器固定在电子机壳的壁上。 该振动吸收体至少间歇地振动，以便消散被吸入电子壳体的振动能。 通过抑制这种情况振动，测量信号中的杂散分量可以降低到获得信噪比的显着提高的程度。

公开(公告)号：US07509879B2

公开(公告)日：2009-03-31

申请号：US10580247

申请日：2004-11-04

申请人： Alfred Rieder ,  Wolfgang Drahm

发明人： Alfred Rieder ,  Wolfgang Drahm

IPC分类号： G01F1/84

CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/849 ,  G01N9/002

摘要： A measurement pickup, or transducer, includes at least one measuring tube for the conveying of a fluid. The measuring tube has an inlet end and an outlet end and vibrates at least at times. For enabling the fluid to be measured to flow through the measuring tube, the measuring tube communicates, via a first tube segment opening into the inlet end and via a second tube segment opening into the outlet end, with a pipeline connected therewith. For the oscillatable holding of the measuring tube, the measurement pickup further includes a support element having a first end piece containing a passageway for the securement of the first tube segment and having a second end piece containing a passageway for the securement of the second tube segment. Each of the two tube segments extends through its respective one of the two passageways and each of the two passageways has an inner diameter, which is greater than an outer diameter of its associated tube segment, so that an intermediate space is formed between each of the associated tube segments and end pieces. The measurement pickup further includes at least one, preferably metal, first spring element pushed onto one of the two tube segments. The spring element fills the intermediate space formed between tube segment and end piece at least partially, with the spring element being arranged in the intermediate space in such a manner that it contacts, at least sectionally, both its associated tube segment and also its associated end piece in such a manner that it is subjected, at least sectionally, to radially acting, deformation forces. As a result of elastic deformations accompanying such deformation forces, the spring element is held pressed against the associated tube segment and the associated end piece, whereby such tube segment is locked securely in the associated passageway.

摘要翻译： 测量拾取器或换能器包括用于输送流体的至少一个测量管。 测量管具有入口端和出口端，并且至少有时振动。 为了使测量流体能够流过测量管，测量管经由通过入口端的第一管段开口和通向与出口端连接的管道与第二管段连通。 对于测量管的可振荡保持，测量拾取器还包括支撑元件，该支撑元件具有第一端部件，该第一端部件包含用于固定第一管段的通道，并且具有第二端部件，该第二端部件包含用于固定第二管段 。 两个管段中的每一个延伸通过其两个通道中的相应一个，两个通道中的每一个具有大于其相关管段的外径的内径，从而在每个通道之间形成中间空间 相关的管段和端部件。 测量拾取器还包括被推到两个管段中的一个上的至少一个，优选地是金属的第一弹簧元件。 弹簧元件至少部分地填充在管段和端件之间形成的中间空间，其中弹簧元件以这样的方式布置在中间空间中，使得其至少部分地与其相关联的管段及其相关联的端部接触 至少部分地受到径向作用的变形力的作用。 由于伴随这种变形力的弹性变形，弹簧元件被保持压靠在相关联的管段和相关联的端部件上，由此这种管段牢固地锁定在相关的通道中。

公开(公告)号：US07360452B2

公开(公告)日：2008-04-22

申请号：US11645059

申请日：2006-12-26

申请人： Alfred Rieder ,  Wolfgang Drahm

发明人： Alfred Rieder ,  Wolfgang Drahm

IPC分类号： G01F1/84

CPC分类号： G01F1/74 ,  G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8431 ,  G01F1/8436 ,  G01F1/849 ,  G01F15/024 ,  G01F15/14

摘要： The measuring device comprises, for measuring multi phase mixture, a vibratory-type transducer and a measuring device electronics electrically coupled with the vibratory-type transducer. The transducer includes at least one measuring tube inserted into the course of the pipeline. An exciter arrangement acts on the measuring tube for causing the at least one measuring tube to vibrate. A sensor arrangement senses vibrations of the at least one measuring tube and delivers at least one oscillation measurement signal representing oscillations of the measuring tube. Further, the measuring device electronics delivers an excitation current driving the exciter arrangement. The measuring device is adapted to compensating measurement errors, induced due to the presence of multi phase mixture, based on a movin resonator model (MRM).

公开(公告)号：US20070131024A1

公开(公告)日：2007-06-14

申请号：US11605260

申请日：2006-11-29

申请人： Wolfgang Drahm ,  Alfred Rieder

发明人： Wolfgang Drahm ,  Alfred Rieder

IPC分类号： G01N11/16 ,  G01F25/00 ,  G01F1/84

CPC分类号： G01N11/16 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/8431 ,  G01F1/8468 ,  G01F1/849 ,  G01N9/002 ,  G01N11/162 ,  G01N11/167 ,  G01N2009/006

摘要： The viscometer provides a viscosity value (Xη) which represents the viscosity of a fluid flowing in a pipe connected thereto. It comprises a vibratory transducer with at least one flow tube for conducting the fluid, which communicates with the pipe. Driven by an excitation assembly, the flow tube is vibrated so that friction forces are produced in the fluid. The viscometer further includes meter electronics which feed an excitation current (iexc) into the excitation assembly. By means of the meter electronics, a first internal intermediate value (X1) is formed, which corresponds with the excitation current (iexc) and thus represents the friction forces acting in the fluid. According to the invention, a second internal intermediate value (X2), representing inhomogeneities in the fluid, is generated in the meter electronics, which then determine the viscosity value (Xη) using the two intermediate values (X1, X2). The first internal intermediate value (X1) is preferably normalized by means of an amplitude control signal (yAM) for the excitation current (iexc), the amplitude control signal corresponding with the vibrations of the flow tube. As a result, the viscosity value (Xη) provided by the viscometer is highly accurate and robust, particularly independently of the position of installation of the flow tube.