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1. 发明申请

WO1998031990A1 SIGNAL PROCESSING AND FIELD PROVING METHODS AND CIRCUITS FOR A CORIOLIS MASS FLOW METER 审中-公开
标题翻译：信号处理和现场检测方法和电路用于CORIOLIS质量流量计
公开(公告)号：WO1998031990A1
公开(公告)日：1998-07-23
申请号：PCT/US1997000837
申请日：1997-01-16
申请人： DIRECT MEASUREMENT CORPORATION , CAGE, Donald, R. , HAHN, David, T. , SCHOTT, Michael, N. , CARMICHAEL, Larry, K.
发明人： DIRECT MEASUREMENT CORPORATION
IPC分类号： G01F01/84
CPC分类号： G01F15/024 , G01F1/8431 , G01F1/8436 , G01F1/8463
摘要： A signal processing apparatus and method for measuring a mass flow rate of a fluid flowing in conjunction with a surface of a Coriolis mass flow meter and a field-provable Coriolis mass flow meter. The apparatus includes: (1) a driver for creating a prescribed vibration in the surface, (2) a motion sensor for measuring a motion of the surface, (3) response characteristic determination circuitry, coupled to the motion sensor, for determining a response characteristic of the surface and (4) flow rate calculation circuitry, coupled to the response characteristic determination circuitry, for calculating a measured mass flow rate of the fluid as a function of the motion and the response characteristic. The field-provable meter employs the response characteristic to monitor or compare meter performance without requiring a separate proving device.
摘要翻译：一种用于测量与科里奥利质量流量计和可现场科里奥利质量流量计的表面一起流动的流体的质量流量的信号处理装置和方法。该装置包括：（1）用于在表面中产生规定振动的驱动器，（2）用于测量表面运动的运动传感器，（3）耦合到运动传感器的响应特性确定电路，用于确定响应表面的特征;以及（4）流量计算电路，耦合到响应特性确定电路，用于根据运动和响应特性计算流体的测量质量流量。现场验证仪采用响应特性来监测或比较仪表性能，而不需要单独的验证设备。

2. 发明申请

WO1997040348A1 SIGNAL PROCESSING APPARATI AND METHODS FOR ATTENUATING SHIFTS IN ZERO INTERCEPT ATTRIBUTABLE TO A CHANGING BOUNDARY CONDITION IN A CORIOLIS MASS FLOW METER 审中-公开
标题翻译：信号处理装置和方法，用于在适合于CORIOLIS质量流量计中的改变边界条件的零干扰下衰减移位
公开(公告)号：WO1997040348A1
公开(公告)日：1997-10-30
申请号：PCT/US1997004056
申请日：1997-03-13
申请人： DIRECT MEASUREMENT CORPORATION
发明人： DIRECT MEASUREMENT CORPORATION , SCHOTT, Michael, N. , CAGE, Donald, R. , CARMICHAEL, Larry, K. , HAHN, David, T.
IPC分类号： G01F01/84
CPC分类号： G01F15/024 , G01F1/8409 , G01F1/8418 , G01F1/8431 , G01F1/8436 , G01F1/849
摘要： In the field of Coriolis mass flow meters, determination of the true zero of the meter has always been problematic due to zero drift effects with changing boundary conditions and fluid parameters. Disclosed are apparati and methods for determining the true mass flow related component of the signal of the meter separately from errors caused by changing boundary conditions and fluid parameters. Accordingly, an apparatus for measuring a mass flow rate of a fluid flowing relative to a flow conduit includes: (1) a force driver for vibrating the flow conduit; (2) a sensor for measuring a resulting motion of the flow conduit and producing a sensed motion signal indicative thereof, the resulting motion containing a Coriolis mode component and a boundary condition mode component; (3) signal processing circuitry, coupled to the sensor to receive the sensed motion signal therefrom, for determining a magnitude of the Coriolis mode component of the resulting motion; and (4) output circuitry for producing an output signal proportional to the mass flow rate, the output signal substantially free of influence from the boundary condition mode component of the sensed motion signal.
摘要翻译：在科里奥利质量流量计领域，随着边界条件和流体参数的变化，零点漂移的影响，仪表的真实零点一直是有问题的。公开了用于确定仪表的信号的真实质量流量相关分量的设置和方法，与由边界条件和流体参数变化引起的误差分开。因此，用于测量相对于流动管道流动的流体的质量流量的装置包括：（1）用于使流动管道振动的力驱动器; （2）传感器，用于测量所述流动管道的所得运动并产生指示其的感测运动信号，所述运动包含科里奥利模式分量和边界条件模式分量; （3）信号处理电路，耦合到传感器以从其接收感测到的运动信号，以确定所得运动的科里奥利模式分量的大小; 和（4）用于产生与质量流量成比例的输出信号的输出电路，输出信号基本上不受所感测运动信号的边界条件模式分量的影响。

3. 发明申请

WO1995029386A1 CORIOLIS MASS FLOW RATE METER 审中-公开
标题翻译： CORIOLIS质量流量计
公开(公告)号：WO1995029386A1
公开(公告)日：1995-11-02
申请号：PCT/US1995005161
申请日：1995-04-18
申请人： DIRECT MEASUREMENT CORPORATION
发明人： DIRECT MEASUREMENT CORPORATION , CAGE, Donald, R. , CAMPBELL, Steven, W. , HAHN, David, T.
IPC分类号： G01F01/84
CPC分类号： G01F1/8409 , G01F1/8413 , G01F1/8418 , G01F1/8431 , G01F1/8436 , G01F1/8459 , G01F1/8463 , G01F1/849 , G01F15/024 , G01L9/0008 , G01N9/002 , G01N11/16 , G01N2009/006
摘要： A flow meter apparatus for measuring attributes of a fluid using the Coriolis principle is disclosed. The apparatus comprises: (A) a body (1) capable of being inserted into and surrounded by the fluid, (B) an actuator (5, 6), disposed within the body (1), for vibrating a surface of the body in a radial mode of vibration, the vibrating surface developing Coriolis forces within the fluid (28), (C) a detector (9, 10), coupled to the surface, for measuring motion of the surface, the motion being a function of Coriolis forces developed in the fluid and (D) a circuit, coupled to the measuring detector, for determining an attribute of the fluid as a function of the motion of the surface. In a preferred embodiment of the invention, a conduit surrounds the apparatus and is coupled to the detector. The apparatus allows precise detection of mass flow rate, pressure, density and viscosity of the fluid surrounding the apparatus.
摘要翻译：公开了一种使用科里奥利原理测量流体属性的流量计装置。该装置包括：（A）能够插入流体包围的主体（1），（B）设置在主体（1）内的致动器（5,6），用于使主体的表面振动径向振动模式，振动表面在流体（28）内发展科里奥利力，（C）耦合到表面的检测器（9,10），用于测量表面的运动，该运动是科里奥利力的函数在流体中显影，以及（D）耦合到测量检测器的电路，用于根据表面的运动确定流体的属性。在本发明的优选实施例中，导管围绕该装置并耦合到检测器。该装置允许精确地检测装置周围的流体的质量流率，压力，密度和粘度。

4. 发明申请

WO2004025228A1 CORIOLIS FLOWMETER WITH IMPROVED ZERO STABILITY 审中-公开
标题翻译：具有改进的零稳定性的CORIOLIS流量计
公开(公告)号：WO2004025228A1
公开(公告)日：2004-03-25
申请号：PCT/US2003/027028
申请日：2003-08-29
申请人： DIRECT MEASUREMENT CORPORATION
发明人： CAGE, Donald, R.
IPC分类号： G01F1/84
CPC分类号： G01F1/8413 , G01F1/8477
摘要： A Coriolis mass flowmeter which comprises at least first and second generally parallel flowtubes, each of which includes a first half that is connected to an inlet manifold and a second half that is connected to an outlet manifold, a first brace bar which is attached to the first halves of the flowtubes, and a second brace bar which is attached to the second halves of the flowtubes. The first and second brace bars are oriented on the flowtubes such that, when the flowtubes are vibrated in at least one of a driven mode of vibration and a Coriolis mode of vibration, the resulting reaction forces at the inlet and outlet manifolds are less than those that exist when the first and second brace bars are oriented generally perpendicular to the flowtubes.
摘要翻译：一种科里奥利质量流量计，其包括至少第一和第二大致平行的流管，每个流管包括连接到入口歧管的第一半部和连接到出口歧管的第二半部，第一支撑杆连接到流管的前半部分和连接到流管第二半部的第二支撑杆。第一和第二支撑杆在流量管上定向，使得当流管以驱动的振动模式和科里奥利振动模式中的至少一种振动时，在入口和出口歧管处产生的反作用力小于那些当第一和第二支撑杆大致垂直于流管取向时存在。

5. 发明申请

WO1995029385A1 CORIOLIS MASS FLOW RATE METER HAVING ADJUSTABLE PRESSURE AND DENSITY SENSITIVITY 审中-公开
标题翻译：具有可调节压力和密度灵敏度的CORIOLIS质量流量计
公开(公告)号：WO1995029385A1
公开(公告)日：1995-11-02
申请号：PCT/US1995005036
申请日：1995-04-18
申请人： DIRECT MEASUREMENT CORPORATION
发明人： DIRECT MEASUREMENT CORPORATION , CAGE, Donald, R. , SCHOTT, Michael, N.
IPC分类号： G01F01/84
CPC分类号： G01F1/8409 , G01F1/8413 , G01F1/8418 , G01F1/8431 , G01F1/8436 , G01F1/8459 , G01F1/8463 , G01F1/849 , G01F15/024 , G01L9/0008 , G01N9/002 , G01N11/16 , G01N2009/006
摘要： Several Radial Mode Coriolis mass flow rate meter geometries and electronic circuits are described that may be made to be sensitive to pressure or density changes. In one embodiment, the meter comprises: (A) a flow conduit (1) for containing a fluid having a physical characteristic, the fluid (21) adapted to flow in the conduit at an unknown rate, (B) a drive circuit (16, 17) for creating a vibration in the flow conduit (1), the fluid (21) altering the vibration as a function of the physical characteristic and the flow rate, (C) a detector circuit (10-15) for measuring the altered vibration at a working point (38, 55) and producing a signal representing an uncompensated mass flow rate (M1) of the fluid and (D) a computation circuit for calculating a compensated mass flow rate (M2) of the fluid proportional to the uncompensated rate by 1/ OMEGA 1 , where OMEGA 1 is a driven natural frequency of the flow conduit and n is a number chosen as a function of the working point, the compensated rate thereby reduced of effects of the physical characteristic. A unique mathematical algorithm is also described that allows for a much wider variety of design geometry while maintaining insensitivity to pressure or density without having to measure or compensate for either. In addition, a method is described that allows for the accurate measurement and compensation of both pressure and density.
摘要翻译：描述了可以对压力或密度变化敏感的几种径向模式科里奥利质量流量计几何形状和电子电路。在一个实施例中，仪表包括：（A）用于容纳具有物理特性的流体的流动管道（1），流体（21）适于以未知的速率流入管道中，（B）驱动电路，17），用于在所述流动管道（1）中产生振动，所述流体（21）根据所述物理特性和所述流量改变所述振动，（C）用于测量所述改变的检测器电路（10-15）在工作点（38,55）处的振动并产生表示流体的未补偿质量流量（M1）的信号，（D）用于计算与未补偿的流体成比例的流体的补偿质量流量（M2）的计算电路速率为1 / OMEGA 1 ，其中OMEGA 1是流动管道的驱动固有频率，n是根据工作点选择的数量，因此补偿的速率降低了物理特性的影响。还描述了一种独特的数学算法，其允许更宽泛的设计几何形状，同时保持对压力或密度的不敏感性，而不必对其进行测量或补偿。此外，描述了允许精确测量和补偿压力和密度的方法。

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