公开(公告)号：US06732570B2

公开(公告)日：2004-05-11

申请号：US10410076

申请日：2003-04-09

申请人： Edward E. Francisco, Jr.

发明人： Edward E. Francisco, Jr.

IPC分类号： G01N900

CPC分类号： G01N9/002 ,  G01F1/8468 ,  G01N2203/0051 ,  G01N2203/0075 ,  G01N2203/0094 ,  G01N2203/0623 ,  G01N2203/0688

摘要： A tube through which fluid flows is installed in a fluid system. A piezoelectric driver is mounted on the exterior of the tube. A piezoelectric sensor is also mounted on the exterior of the tube. A feedback loop from the sensor to the driver is adapted to cause vibrations in the tube at its resonant frequency or a harmonic thereof. One or more strain gauges mounted on the exterior wall of the tube sense the strain exerted on the exterior wall by the pressure of the fluid flowing through the tube. A temperature sensor mounted on the exterior wall of the tube senses temperature. A microprocessor determines the density of the fluid flowing through the tube responsive to the piezoelectric sensor, temperature sensor and the one or more strain gauges. The one or more strain gauges comprise a bridge circuit. Strain gauges comprise two arms of the bridge circuit and temperature dependent resistors comprise the other two arms of the bridge. The output from the one or more strain gauges is used to correct the frequency reading given by the piezoelectric sensor.

摘要翻译： 流体流过的管安装在流体系统中。 压电驱动器安装在管的外部。 压电传感器也安装在管的外部。 从传感器到驱动器的反馈回路适于使管中的振动处于其谐振频率或其谐波。 安装在管的外壁上的一个或多个应变计通过流过管的流体的压力感测施加在外壁上的应变。 安装在管外壁上的温度传感器感测温度。 微处理器响应于压电传感器，温度传感器和一个或多个应变计来确定流过管的流体的密度。 一个或多个应变计包括桥接电路。 应变计包括桥接电路的两个臂，温度依赖电阻器包括桥的另外两个臂。 来自一个或多个应变计的输出用于校正由压电传感器给出的频率读数。

公开(公告)号：US06543274B1

公开(公告)日：2003-04-08

申请号：US09830597

申请日：2001-04-27

申请人： Falk Herrmann ,  Dietmar Hahn ,  Gottfried Flik

发明人： Falk Herrmann ,  Dietmar Hahn ,  Gottfried Flik

IPC分类号： G01N900

CPC分类号： G01N33/2888 ,  G01N9/002 ,  G01N11/16 ,  G01N33/4905

摘要： A sensor arrangement for ascertaining the density and the viscosity of a liquid is proposed, having an arrangement comprising at least two basic sensor elements, at least one of which can be wetted with the liquid, and having electro-acoustical transducers (6) in the basic sensor elements for generating and detecting surface acoustic waves with predetermined wave modes, from whose propagation behavior along a measurement path a measure for the density and the viscosity of the liquid can be ascertained. Liquid traps (17) for the liquid, which extend in the applicable measurement path, are disposed in the region of at least one of the basic sensor elements, parallel to the direction of propagation of the surface acoustic wave.

摘要翻译： 提出了一种用于确定液体的密度和粘度的传感器装置，其具有包括至少两个基本传感器元件的布置，其中至少一个基本传感器元件可以被液体润湿，并且在其中具有电声换能器（6） 用于产生和检测具有预定波模式的表面声波的基本传感器元件，可以确定沿着测量路径的传播行为对液体的密度和粘度的测量。 用于在适用的测量路径中延伸的液体的液体捕集器（17）布置在平行于表面声波的传播方向的至少一个基本传感器元件的区域中。

公开(公告)号：US06334356B1

公开(公告)日：2002-01-01

申请号：US09419101

申请日：1999-10-15

申请人： Toshiro Kita ,  Kenji Kawaguchi ,  Toshiyuki Shimizu

发明人： Toshiro Kita ,  Kenji Kawaguchi ,  Toshiyuki Shimizu

IPC分类号： G01N900

CPC分类号： G01N9/002 ,  G01N11/16 ,  G01N29/036 ,  G01N29/22 ,  G01N29/222 ,  G01N2291/02408 ,  G01N2291/02818

摘要： This invention relates to a method for deciding an amount of correction factor for the viscosity of a fluid test sample needed for correcting a calculation or measurement of the density based on the viscosity. The method for deciding the viscosity of the fluid test sample, during a density measurement performed by an oscillating densitometer where there is a peak point on the viscosity-attenuation constant characteristic of the test sample at the specific order oscillation, is to decide whether the attenuation constant of the viscosity-attenuation constant characteristic of the test sample at the other specific order oscillation is larger or smaller than that corresponding to the peak point, to decide according to said decision whether the viscosity detected by the attenuation constant obtained at the specific order oscillation belongs to either side larger or smaller than the peak point, and then to decide upon and determine the viscosity of the test sample according to the above two decisions.

摘要翻译： 本发明涉及一种用于基于粘度来确定校正密度的计算或测量所需的流体测试样品的粘度的校正因子的量的方法。用于确定流体测试样品的粘度的方法 通过振荡密度计进行的密度测量，其中在特定次序振荡下测试样品的粘度 - 衰减常数特征具有峰值点，是确定测试样品的粘度 - 衰减常数特性的衰减常数 其他特定顺序振荡大于或小于对应于峰值点的振荡，根据所述判定来确定由特定阶振荡获得的衰减常数所检测的粘度是否属于峰值点以上的任何一侧，然后 根据上述两个d来决定和确定测试样品的粘度 决定。

公开(公告)号：US06672137B1

公开(公告)日：2004-01-06

申请号：US09869263

申请日：2001-09-27

申请人： Hiroshi Isomura ,  Takayoshi Atsumi ,  Koji Shiono ,  Masamine Takagi

发明人： Hiroshi Isomura ,  Takayoshi Atsumi ,  Koji Shiono ,  Masamine Takagi

IPC分类号： G01N900

CPC分类号： G01N27/4077 ,  G01N33/0039 ,  Y02A50/247

摘要： The oxygen sensor of the present invention has excellent durability capable of effectively preventing contamination with lead or the like for a detection electrode even in low temperature exhaust gases, and having stable response over a long period of time. The contamination preventive layer provided in the sensor device comprises composite powders having coarse powders covered therearound with fine powders, and hollows not filled with fine powders are scattered in gaps among the composite powders. Both the coarse and fine powders comprise ceramic powders. Further, it is particularly preferred that the ceramic powders are powders of a titania powder having a peak at 1 &mgr;m or less and a composite ceramic powder containing alumina such as spinel having a peak at 10 &mgr;m or more. The contamination preventive layer can be formed by coating a slurry containing ceramic powders of different specific surface areas, an organic binder and a solvent such as methanol on the surface of the electrode protection layer followed by drying.

摘要翻译： 本发明的氧传感器具有优异的耐久性，即使在低温废气中也能够有效地防止铅等检测电极的污染，并且长期稳定的响应。 设置在传感器装置中的防污染层包括具有细粉末的粗粉末的复合粉末，并且未填充有细粉末的中空部分散布在复合粉末之间的间隙中。 粗粉末和细粉末都包括陶瓷粉末。 此外，特别优选的是，陶瓷粉末是具有1mum以下的峰值的二氧化钛粉末的粉末，以及含有10个以上的峰值的尖晶石等的氧化铝的复合陶瓷粉末。 防污层可以通过在电极保护层的表面上涂布含有不同比表面积的陶瓷粉末，有机粘合剂和溶剂如甲醇的浆料，然后干燥而形成。

公开(公告)号：US06546784B2

公开(公告)日：2003-04-15

申请号：US09811500

申请日：2001-03-20

申请人： Gabriel Mario Bilmes ,  Oscar Eduardo Martinez

发明人： Gabriel Mario Bilmes ,  Oscar Eduardo Martinez

IPC分类号： G01N900

CPC分类号： G01V1/001 ,  G10K15/046

摘要： The invention is an apparatus that measures dirt density on steel plates, characterized by including a pulsed laser that impinges on the inspected plate, and a microphone that detects the sound produced by the sudden ablation of the dirt, the amplitude of the microphone signal being the measure of the dirt on the plate. The microphone is connected to an electronic signal processing system, which is a computer or a programmed digital processor that determines the average value and standard deviation of the signal over the number of hits specified by the operator.

摘要翻译： 本发明是一种测量钢板上的灰尘密度的装置，其特征在于包括冲击在被检测板上的脉冲激光，以及麦克风，该麦克风检测由突然消除污物产生的声音，麦克风信号的振幅为 测量板上的污垢。 麦克风连接到电子信号处理系统，该电子信号处理系统是计算机或编程的数字处理器，其确定信号在由操作者指定的命中次数上的平均值和标准偏差。

公开(公告)号：US06263296B1

公开(公告)日：2001-07-17

申请号：US09235555

申请日：1999-01-22

申请人： Yasuo Nakamura

发明人： Yasuo Nakamura

IPC分类号： G01N900

CPC分类号： B41L13/04 ,  B41L13/18 ,  B41L39/00

摘要： A method for predicting printing density for use in a stencil printing in which an ink is transferred from a rotated printing drum to a printing sheet through a perforated stencil, by pressing the printing sheet and the printing drum against each other, is provided. The method comprises (a) a first step of measuring printing densities (OD) on at least two copies of print at corresponding printed portions thereof, the copies of print being obtained under different conditions of F/f, in which F is a pressing force at which the printing sheet is pressed to the drum and f is a rotation speed of the drum, (b) a second step of statistically processing the printing densities measured in the first step to obtain a function of printing density and F/f value, and (c) a third step of calculating a printing density at a desired pressing force and a desired rotation speed based on the function obtained in the second step. The function may be OD=V×{square root over ( )}(F/f)+W, in which V and W means constants that may be obtained by least-squares method.

摘要翻译： 提供了一种用于预印用于模板印刷中的印刷密度的方法，其中通过将打印纸和印刷鼓相互压迫，油墨通过穿孔模板从旋转的印版滚筒转印到印刷纸上。 该方法包括：（a）第一步骤，在其对应印刷部分的至少两份印刷品上测量印刷密度（OD），在不同的F / f条件下获得印刷品的副本，其中F是压制力 其中打印纸被压到滚筒，f是滚筒的转速;（b）第二步骤，统计处理在第一步骤中测量的打印密度以获得打印浓度和F / f值的功能， 以及（c）第三步骤，基于在第二步骤中获得的功能，以期望的压力和期望的转速计算打印浓度。 函数可以是OD = Vx {square root over（）}（F / f）+ W，其中V和W表示可以通过最小二乘法获得的常数。

公开(公告)号：US06260406B1

公开(公告)日：2001-07-17

申请号：US09410020

申请日：1999-10-01

申请人： Yoshiyuki Shimokawa ,  Masuo Suzuki

发明人： Yoshiyuki Shimokawa ,  Masuo Suzuki

IPC分类号： G01N900

CPC分类号： G01N9/24 ,  G01N22/00

摘要： A densitometer using microwaves, which measures the density value of a to-be-measured substance in a to-be-measured liquid on the basis of a reception signal obtained by transmitting/receiving a microwave in/from the to-be-measured liquid by applicators, includes a clock source for generating a reference signal as a phase reference, an oscillator formed from a PLL circuit for generating a microwave having a frequency f in synchronism with the reference signal from the clock source, an oscillator formed from a PLL circuit for generating a microwave having a frequency f+&Dgr;f in synchronism with the reference signal from the clock source, a mixer for mixing the microwave from the oscillator, i.e., a reception signal having the frequency f measured through the to-be-measured liquid with the microwave having the frequency f+&Dgr;f from the oscillator, and a phase difference measuring section for comparing the phase of the output mixed by the mixer with that of the reference signal from the clock source to measure the phase difference.

摘要翻译： 一种使用微波的密度计，其基于通过从被测量液体发送/接收微波获得的接收信号来测量被测量液体中待测物质的浓度值 通过施加器包括用于产生参考信号作为相位基准的时钟源，由PLL电路形成的振荡器，用于产生与来自时钟源的参考信号同步的频率f的微波;由PLL电路形成的振荡器 用于与来自时钟源的参考信号同步地产生具有频率f + DELTAf的微波;混频器，用于混合来自振荡器的微波，即具有通过被测量液体测量的频率f的接收信号与 具有来自振荡器的频率f + DELTAf的微波和相位差测量部分，用于将由混频器混合的输出的相位与来自th的参考信号的相位相比较 e时钟源来测量相位差。

公开(公告)号：US06776039B1

公开(公告)日：2004-08-17

申请号：US10358233

申请日：2003-02-05

申请人： Shun-Tsung Lu ,  Ta-Wei Lu

发明人： Shun-Tsung Lu ,  Ta-Wei Lu

IPC分类号： G01N900

CPC分类号： G01N9/14 ,  G01N33/146

摘要： Disclosed herein is an alcohol content and temperature measuring instrument which is simply composed of a mug, an embolism an observation window, and a thermograph and a measuring tub. The measurement of alcohol concentration in a particular liquid can be measured according to Torricelli's law and Archimedes principle, while learn about the temperature of the liquid from the thermograph.

摘要翻译： 本文公开了一种酒精含量和温度测量仪器，其简单地由杯子，栓塞观察窗和温度计和测量盆组成。 可以根据Torricelli定律和阿基米德原理测量特定液体中的酒精浓度，同时了解温度计的液体温度。

公开(公告)号：US06704660B2

公开(公告)日：2004-03-09

申请号：US10237492

申请日：2002-09-09

申请人： Thomas E. Morrow ,  Kendricks A. Behring, II

发明人： Thomas E. Morrow ,  Kendricks A. Behring, II

IPC分类号： G01N900

CPC分类号： G01N29/024 ,  G01N33/225 ,  G01N2291/0215 ,  G01N2291/02809 ,  G01N2291/02818 ,  G01N2291/02836 ,  G01N2291/02881

摘要： A method to determine thermodynamic properties of a natural gas hydrocarbon, when the speed of sound in the gas is known at an arbitrary temperature and pressure. Thus, the known parameters are the sound speed, temperature, pressure, and concentrations of any dilute components of the gas. The method uses a set of reference gases and their calculated density and speed of sound values to estimate the density of the subject gas. Additional calculations can be made to estimate the molecular weight of the subject gas, which can then be used as the basis for mass flow calculations, to determine the speed of sound at standard pressure and temperature, and to determine various thermophysical characteristics of the gas.

摘要翻译： 当在任意的温度和压力下已知气体中的声速时，确定天然气烃的热力学性质的方法。 因此，已知参数是气体的任何稀释组分的声速，温度，压力和浓度。 该方法使用一组参考气体及其计算的声值的密度和速度来估计目标气体的密度。 可以进行额外的计算，以估计目标气体的分子量，然后可以将其用作质量流量计算的基础，以确定标准压力和温度下的声速，并确定气体的各种热物理特性。

公开(公告)号：US06634214B1

公开(公告)日：2003-10-21

申请号：US09581559

申请日：2000-08-29

申请人： Robert Richard Thurston ,  Paul Stephen Hammond ,  Barry Leonard Price

发明人： Robert Richard Thurston ,  Paul Stephen Hammond ,  Barry Leonard Price

IPC分类号： G01N900

CPC分类号： G01N9/24 ,  G01N2291/02881 ,  G05D21/02

摘要： A method and apparatus for measuring the relative density of a gas. The apparatus includes a chamber to which a gas in question, for example natural gas, is supplied through an inlet and leaves through an outlet. The speed of sound SoS at ambient temperature is measured using any suitable method such as electronic control and a calculating device and an ultra-sound emitter and an ultra-sound receiver. The ambient temperature Ta is observed by a temperature sensor, and a thermal conductivity sensor measures the thermal conductivity of the gas at two different temperatures above the ambient temperature. One value ThCH of the thermal conductivity is measured at 70° C. above ambient and the other value ThCL of the thermal conductivity is measured at 50° C. above ambient. The control calculates the relative density RD of the gas according to the formula RD=g·ThCH+h·ThCL+i·SoS+j·Ta+k·.Ta2+l where (g, h, i, j, k and l) are constants.

摘要翻译： 一种用于测量气体的相对密度的方法和装置。 该装置包括一个室，通过入口向所述室供应所述气体，例如天然气，并通过出口离开。 使用诸如电子控制和计算装置以及超声发射器和超声波接收器之类的任何合适的方法测量环境温度下的声速SoS的速度。 通过温度传感器观察环境温度Ta，并且热导率传感器测量在高于环境温度的两个不同温度下的气体的热导率。 在高于环境温度的70℃下测量热导率的一个值ThCH，并且在高于环境温度的50℃下测量热导率的另一个值ThCL。 控制根据公式计算气体的相对密度RD RD = g.ThCH + h.ThCL + i.SoS + j.Ta + k..Ta2 + l其中（g，h，i，j ，k和l）是常数。