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公开(公告)号：US3956922A
公开(公告)日：1976-05-18
申请号：US548276
申请日：1975-02-10
申请人： Milton H. November
发明人： Milton H. November
IPC分类号： G01N9/00
CPC分类号： G01N9/002 , G01N2009/008
摘要： A vibration densitometer probe with a shield and well which have solved a calibration shift problem involving a calibration shift that occurred when the probe was placed in different gases or in the hollow interiors or pipelines of different sizes or geometries or the probe was placed in the same container or pipeline with different orientations. Unusual shield perforations and ports also improve operation.
摘要翻译： 具有屏蔽和孔的振动密度计探头已经解决了校准偏移问题，该问题涉及当将探针放置在不同气体中或在具有不同尺寸或几何形状的中空内部或管道中时发生的校准偏移，或者将探针置于相同的位置 容器或管道不同的方向。 不寻常的屏蔽穿孔和端口也可以改善操作。
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公开(公告)号：US3769831A
公开(公告)日：1973-11-06
申请号：US3769831D
申请日：1971-10-13
申请人： ITT
发明人： SCHIATTER G
IPC分类号： G01N9/00
CPC分类号： G01N9/002 , G01N2009/008
摘要： A vibration densitometer having means for producing an output signal which is a pulse train of a pulse repetition frequency that is the function of the density of a fluid in which a densitometer probe is immersed. The densitometer has a linearization circuit which is exceptionally accurate for both liquid and gas density measurement or the like, the linearization circuit producing an output voltage Eoo given by the equation Eoo AT2 + CT + B, where A, B and C are constants, and T is the reciprocal of the pulse repetition frequency.
摘要翻译： 一种振动密度计，具有用于产生作为脉冲重复频率的脉冲串的输出信号的装置，所述脉冲重复频率是密度计探针浸入其中的流体的密度的函数。 密度计具有对于液体和气体密度测量等异常精确的线性化电路，线性化电路产生由等式Eoo = AT2 + CT + B给出的输出电压Eoo，其中A，B和C是常数， T是脉冲重复频率的倒数。
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公开(公告)号：US3952592A
公开(公告)日：1976-04-27
申请号：US309250
申请日：1972-11-24
CPC分类号： G06J1/00 , G01F1/90 , G01N9/002 , G01N2009/008
摘要： A net oil computer including a vibration densitometer and a turbine flowmeter. The flowmeter produces output pulses at a frequency directly proportional to the rate of volume flow through a pipeline. The output of the flowmeter is impressed upon the pole of a single pole, double throw electronic switch. One switch contact is connected to an indicator through a divider, a driver amplifier and a counter. The other contact is also connected to an indicator through a divider, a driver amplifier and a counter. The switch is operated by a gate generator connected from the densitometer. The gate generator produces an output pulse of a pulse width directly proportional to the percent of oil or water in the pipeline. A temperature probe is inserted in the line to vary the pulse width in accordance with oil temperature. The densitometer has an improved magnetostrictive drive which is controlled to have a phase proper for maximum resonance. The densitometer is also provided with a self-start circuit to find resonance automatically. A synchronous detector detects resonance and automatically turns the self-start circuit off.
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公开(公告)号：US3926035A
公开(公告)日：1975-12-16
申请号：US52802274
申请日：1974-11-29
申请人： ITT
CPC分类号： G01N29/036 , G01N9/002 , G01N2009/004 , G01N2009/008 , G01N2291/0256
摘要： A gravitometer incorporating two ferromagnetic cantilevered vanes simultaneously vibrated by a spaced ferromagnetic driver at their respective same or different frequencies. The driver provides a field reversal which produces a double frequency at two respective piezoelectric crystal pickups fixed to the respective vanes. Two respective divide-by-two dividers cause the driver to produce a synchronous field drive so that the apparatus forms two combined closed loop electromechanical oscillators, the loops having amplifiers with respective gains adequate to sustain vibrations of both vanes continuously.
摘要翻译： 并入两个铁磁悬臂叶片的重力计同时由间隔的铁磁驱动器以相应或不同的频率振动。 驱动器提供场反转，其在固定到各个叶片的两个相应的压电晶体拾取器处产生双倍频率。 两个分开的二分频器使得驱动器产生同步励磁驱动器，使得该装置形成两个组合的闭环机电振荡器，该回路具有相应增益的放大器，其足以连续地维持两个叶片的振动。
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公开(公告)号：US3885140A
公开(公告)日：1975-05-20
申请号：US49634174
申请日：1974-08-12
申请人： ITT
CPC分类号： G06F7/68 , G01N9/002 , G01N2009/008
摘要： A vibration densitometer including a closed loop electromechanical oscillator for vibrating a fluid immersible vane. A digital output directly proportional to density is achieved through a unique digital squarer. The densitometer is an all digital system. In the loop, a tracking filter is provided. Separate search and track automatic gain control feedbacks are provided. A threshold detector controls clamps and a gate to cause the voltage controlled oscillator of a first phase lock loop to search or track the vane resonant frequency. The threshold detector also effects the search feedback. A phase adjustment circuit and a second phase lock loop are employed to impress a sine wave voltage component on the vane driver of a phase which creates maximum efficiency.
摘要翻译： 一种振动密度计，包括用于振动流体浸入式叶片的闭环机电振荡器。 与密度成正比的数字输出通过独特的数字平方器实现。 密度计是全数字系统。 在循环中，提供跟踪过滤器。 提供单独的搜索和跟踪自动增益控制反馈。 阈值检测器控制夹子和门，以使第一锁相环的压控振荡器搜索或跟踪叶片谐振频率。 阈值检测器也影响搜索反馈。 使用相位调整电路和第二锁相环来在相位的叶片驱动器上施加正弦波电压分量，从而产生最大的效率。
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公开(公告)号：US3701952A
公开(公告)日：1972-10-31
申请号：US3701952D
申请日：1971-10-20
申请人： ITT
CPC分类号： G06G7/625 , G01N9/002 , G01N2009/008
摘要： A densitometer which utilizes a thin vane vibrated by a magnetostrictive tube. A piezoelectric crystal pickup feeds an amplifier and tracking filter to energize a coil around the magnetostrictive tube. The device is, in effect, an electromagnetic oscillator in that the coil is driven in phase with the detected signal. Vibration thus increases in amplitude until limited electrically. A linearization circuit provides an output D.C. voltage directly proportional to fluid density, gas, or liquid, which may be impressed upon a conventional D.C. voltmeter calibrated linearly in density. A great many features, both in the mechanical structure and in the electronics, make it possible to easily calibrate the instrument to read, for example, to within an accuracy tolerance of + OR - 0.01 percent over a fluid density range of, for example, from about 0.08 pounds per cubic foot to 80.0 pounds per cubic foot. Another outstanding advantage of the invention relates to a probe type construction which may be used in a pipeline of any size.
摘要翻译： 一种密度计，其利用由磁致伸缩管振动的薄叶片。 压电晶体拾取器馈送放大器和跟踪滤波器来激励磁致伸缩管周围的线圈。 该装置实际上是电磁振荡器，因为线圈与检测到的信号同相驱动。 振动因此增加幅度直到有限电。 线性化电路提供与流体密度，气体或液体成正比的输出直流电压，其可以施加在以密度线性校准的常规直流电压表上。 在机械结构和电子部件中的许多特征使得可以容易地校准仪器以例如在例如流体密度范围内的+/- 0.01％的精度公差范围内读取， 从每立方英尺约0.08磅到80.0磅/立方英尺。 本发明的另一突出优点涉及可用于任何尺寸的管道中的探针型结构。
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7.发明授权公开(公告)号：US06269686B1
公开(公告)日：2001-08-07
申请号：US09244594
申请日：1999-02-04
申请人： Dietmar Hahn , Gottfried Flik , Falk Herrmann
发明人： Dietmar Hahn , Gottfried Flik , Falk Herrmann
IPC分类号： G01N1110
CPC分类号： G01N9/002 , G01N11/16 , G01N2009/008
摘要： A sensor which has a bending reed and a piezoelectric resonator. Due to excitation by the piezoelectric resonator, the bending reed can be excited to vibration in a measurable medium. In this context, the vibration frequency and the damping of the bending reed are a function of the density and the viscosity, respectively, of the measurable medium. This can be measured by a piezoresistive element, and thus the density and viscosity of the measurable medium are ascertained.
摘要翻译： 具有弯曲簧片和压电谐振器的传感器。 由于压电谐振器的激发，弯曲簧片可以在可测量的介质中激发到振动。 在这种情况下，弯曲簧片的振动频率和阻尼分别是可测量介质的密度和粘度的函数。 这可以通过压阻元件测量，从而确定可测量介质的密度和粘度。
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公开(公告)号：US3883811A
公开(公告)日：1975-05-13
申请号：US49663374
申请日：1974-08-12
申请人： ITT
CPC分类号： G01N9/002 , G01N2009/008 , H03L7/06
摘要： A vibration densitometer including a closed loop electromechanical oscillator for vibrating a fluid immersible vane. A digital output directly proportional to density is achieved through a unique digital squarer. The densitometer is an all digital system. In the loop, a tracking filter is provided. Separate search and track automatic gain control feedbacks are provided. A threshold detector controls clamps and a gate to cause the voltage controlled oscillator of a first phase lock loop to search or track the vane resonant frequency. The threshold detector also effects the search feedback. A phase adjustment circuit and a second phase lock loop are employed to impress a sine wave voltage component on the vane driver of a phase which creates maximum efficiency.
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公开(公告)号：US3878374A
公开(公告)日：1975-04-15
申请号：US42340973
申请日：1973-12-10
申请人： ITT
CPC分类号： H03L7/06 , G01N9/002 , G01N2009/008
摘要： A vibration densitometer including a closed loop electromechanical oscillator for vibrating a fluid immersible vane. A digital output directly proportional to density is achieved through a unique digital squarer. The densitometer is an all digital system. In the loop, a tracking filter is provided. Separate search and track automatic gain control feedbacks are provided. A threshold detector controls clamps and a gate to cause the voltage controlled oscillator of a first phase lock loop to search or track the vane resonant frequency. The threshold detector also effects the search feedback. A phase adjustment circuit and a second phase lock loop are employed to impress a sine wave voltage component on the vane driver of a phase which creates maximum efficiency.
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10.发明授权Method of and apparatus for producing fluid gravity and density analogs and flowmeters incorporating gravitometers 失效用于生产流体重力和密度类似物的方法和装置以及包含重力计的流量计
公开(公告)号：US3862568A
公开(公告)日：1975-01-28
申请号：US26532772
申请日：1972-06-22
申请人： ITT
CPC分类号： G01F1/88 , G01N9/002 , G01N2009/004 , G01N2009/008
摘要： Gas flowmeters for indicating total volume flow. The flowmeters incorporate gravitometers having vibration densitometers including spring metal ferromagnetic cantilevered vanes which vibrate when driven. A thermally conductive housing stores heat and equalizes the temperature between a gas of interest and air. The air is kept dry by a desiccator. The gas is circulated through a first chamber in the housing containing one vane. Air occupies a second chamber having another vane therein. Both chambers are vented to the atmosphere. The gas is circulated through the first chamber very slowly so that the pressures in both chambers are approximately equal to atmospheric. In one embodiment of the gravitometer, gravity, G, is computed in a manner similar to
摘要翻译： 用于指示总体积流量的气体流量计。 流量计包括具有振动密度计的重力计，其包括当被驱动时振动的弹簧金属铁磁悬臂叶片。
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