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1. 发明申请

WO2005059511A2 DENSITOMETER WITH PULSING PRESSURE 审中-公开
标题翻译：带脉冲压力的密度计
公开(公告)号：WO2005059511A2
公开(公告)日：2005-06-30
申请号：PCT/US2004041432
申请日：2004-12-13
申请人： INVENSYS SYS INC , MATTAR WADE M , VIGNOS JAMES H
发明人： MATTAR WADE M , VIGNOS JAMES H
IPC分类号： G01F1/84 , G01N9/00 , G01N9/26 , G01N33/28 , G01N
CPC分类号： G01F1/8436 , G01F1/8486 , G01F1/849 , G01N9/002 , G01N9/26
摘要： Techniques for measuring a density of a liquid within a fluid that includes both a liquid and a gas are described. A pressure of the fluid oscillates according to a time-varying function, which causes a density of the fluid also to oscillate according to the same time-varying function (235, 404). A resulting pressure signal (302) and density signal (304) are analyzed to extract at least a first and second pressure value (225, 245) and at least a first and second density value (205, 240), (410), where the first pressure and density values occur at a first time, and the second pressure and density values occur at a second time. Then, the liquid density is calculated from the first and second pressure and density values (250, 414). As a result, the liquid density may be calculated quickly and easily, with a minimum of effort on the part of an operator, and without requiring disruption of other measurement processes associate with the flowtube.
摘要翻译：描述了用于测量包括液体和气体的流体内的液体的密度的技术。流体的压力根据时变功能振荡，这导致流体的密度也根据相同的时变功能振荡（235,404）。分析所得到的压力信号（302）和密度信号（304）以提取至少第一和第二压力值（225,245）和至少第一和第二密度值（205,240）（410），其中第一压力和密度值在第一时间出现，第二压力和密度值在第二时间出现。然后，从第一和第二压力和密度值（250,414）计算液体密度。结果，可以以最小的操作者的努力快速且容易地计算液体密度，并且不需要与流管相关联的其他测量过程的中断。

2. 发明申请

WO2004023081A2 MULTI-MEASUREMENT VORTEX FLOW METER 审中-公开
标题翻译：多重测量VORTEX流量计
公开(公告)号：WO2004023081A2
公开(公告)日：2004-03-18
申请号：PCT/US0326969
申请日：2003-08-29
申请人： INVENSYS SYS INC , COOK WARREN E , LEWICKE JOSEPH J , ALLSTROM PETER E , VIGNOS JAMES H
发明人： COOK WARREN E , LEWICKE JOSEPH J , ALLSTROM PETER E , VIGNOS JAMES H
IPC分类号： G01F20060101 , G01F1/00 , G01F1/32 , G01F1/86 , G01F15/02 , G01F25/00 , G01N9/26 , G01N31/00 , G06F19/00 , G01F
CPC分类号： G05F3/02 , G01F1/3254 , G01F1/86 , G01F15/024 , G01F25/0007 , G01N9/26
摘要： Two-wire transmitters are described in which the required voltage that a control room must supply to the transmitter is lower at high current than at low current, thus freeing up more voltage for other uses, and in which a constant set of operating voltages may be maintained. A corrected pressure in a vortex flow meter may be determined that reflects the mass flow rate. Thus, the mass flow rate may be determined based on the corrected pressure reading and a measured volumetric flow rate. Density may be determined from pressure and temperature using a table containing error values based on a standard density determination and a relatively simple approximation. During operation of a flow meter, the stored error values may be linearly interpolated and the approximation may be computed to determine the density from the stored error value.
摘要翻译：描述了两线式变送器，其中控制室必须向变送器提供的所需电压在高电流时低于低电流，从而释放更多的电压用于其他用途，并且其中一组恒定的工作电压可以是保持。可以确定涡流流量计中校正的压力，其反映质量流量。因此，质量流量可以基于校正的压力读数和测量的体积流量来确定。可以使用包含基于标准密度测定和相对简单近似的误差值的表从压力和温度确定密度。在流量计的操作期间，存储的误差值可以被线性内插，并且可以计算近似值以从存储的误差值确定密度。

3. 发明申请

WO2005059511A3 DENSITOMETER WITH PULSING PRESSURE 审中-公开
公开(公告)号：WO2005059511A3
公开(公告)日：2005-06-30
申请号：PCT/US2004/041432
申请日：2004-12-13
申请人： INVENSYS SYSTEMS, INC. , MATTAR, Wade, M. , VIGNOS, James, H.
发明人： MATTAR, Wade, M. , VIGNOS, James, H.
IPC分类号： G01N7/00 , G01N9/00
摘要： Techniques for measuring a density of a liquid within a fluid that includes both a liquid and a gas are described. A pressure of the fluid oscillates according to a time-varying function, which causes a density of the fluid also to oscillate according to the same time-varying function (235, 404). A resulting pressure signal (302) and density signal (304) are analyzed to extract at least a first and second pressure value (225, 245) and at least a first and second density value (205, 240), (410), where the first pressure and density values occur at a first time, and the second pressure and density values occur at a second time. Then, the liquid density is calculated from the first and second pressure and density values (250, 414). As a result, the liquid density may be calculated quickly and easily, with a minimum of effort on the part of an operator, and without requiring disruption of other measurement processes associate with the flowtube.

4. 发明申请

WO2004023081A3 MULTI-MEASUREMENT VORTEX FLOW METER 审中-公开
公开(公告)号：WO2004023081A3
公开(公告)日：2004-03-18
申请号：PCT/US2003/026969
申请日：2003-08-29
申请人： INVENSYS SYSTEMS, INC. , COOK, Warren, E. , LEWICKE, Joseph, J. , ALLSTROM, Peter, E. , Vignos, James, H.
发明人： COOK, Warren, E. , LEWICKE, Joseph, J. , ALLSTROM, Peter, E. , Vignos, James, H.
IPC分类号： G01N31/00
摘要： Two-wire transmitters are described in which the required voltage that a control room must supply to the transmitter is lower at high current than at low current, thus freeing up more voltage for other uses, and in which a constant set of operating voltages may be maintained. A corrected pressure in a vortex flow meter may be determined that reflects the mass flow rate. Thus, the mass flow rate may be determined based on the corrected pressure reading and a measured volumetric flow rate. Density may be determined from pressure and temperature using a table containing error values based on a standard density determination and a relatively simple approximation. During operation of a flow meter, the stored error values may be linearly interpolated and the approximation may be computed to determine the density from the stored error value.

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