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    • 4. 发明授权
    • Capacitance probe for fluid flow and volume measurements
    • 用于流体流量和体积测量的电容探头
    • US5596150A
    • 1997-01-21
    • US400703
    • 1995-03-08
    • G. Dickey ArndtThanh X. NguyenJames R. Carl
    • G. Dickey ArndtThanh X. NguyenJames R. Carl
    • G01F1/64G01F1/74G01F1/58
    • G01F1/74G01F1/64
    • Method and apparatus for making measurements on fluids are disclosed, including the use of a capacitive probe for measuring the flow volume of a material within a flow stream. The capacitance probe has at least two elongate electrodes and, in a specific embodiment of the invention, has three parallel elongate electrodes with the center electrode being an extension of the center conductor of a co-axial cable. A conductance probe is also provided to provide more accurate flow volume data in response to conductivity of the material within the flow stream. A preferred embodiment of the present invention provides for a gas flow stream through a micro-gravity environment that allows for monitoring a flow volume of a fluid sample, such as a urine sample, that is entrained within the gas flow stream.
    • 公开了用于对流体进行测量的方法和装置,包括使用用于测量流动流中的材料的流量的电容式探针。 电容探针具有至少两个细长电极,并且在本发明的具体实施例中,具有三个平行的细长电极,其中心电极是同轴电缆的中心导体的延伸。 还提供电导探针以响应于流动流内的材料的导电性提供更精确的流量数据。 本发明的优选实施例提供了通过微重力环境的气体流动流,其允许监测被夹带在气体流动流内的流体样品(例如尿样)的流量。
    • 8. 发明授权
    • Method and apparatus for measuring fluid flow
    • 测量流体流量的方法和装置
    • US5675259A
    • 1997-10-07
    • US528069
    • 1995-09-14
    • G. Dickey ArndtThanh X. NguyenJames R. Carl
    • G. Dickey ArndtThanh X. NguyenJames R. Carl
    • G01F1/66G01F1/74G01F23/284G01N22/00G01N33/28G01R27/26
    • G01F23/284G01F1/66G01F1/74G01N33/2823
    • Method and apparatus for making measurements on fluids related to their complex permeability are disclosed. A microwave probe is provided for exposure to the fluids. The probe can be non-intrusive or can also be positioned at the location where measurements are to be made. The impedance of the probe is determined, in part, by the complex dielectric constant of the fluids at the probe. A radio frequency signal is transmitted to the probe and the reflected signal is phase and amplitude detected at a rapid rate for the purpose of identifying the fluids. Multiple probes may be selectively positioned to monitor the behavior of the fluids including their flow rate. Fluids may be identified as between two or more different fluids as well as multiple phases of the same fluid based on differences between their complex permittivities.
    • 公开了用于对与其复合渗透性相关的流体进行测量的方法和装置。 提供微波探头以暴露于流体。 探头可以是非侵入式的,也可以位于要进行测量的位置。 探针的阻抗部分地由探针上的流体的复介电常数确定。 射频信号被传送到探头,并且为了识别流体的目的,反射信号是快速检测的相位和幅度。 可以选择性地定位多个探针以监测流体的行为,包括其流速。 基于其复数介电常数之间的差异,流体可以被识别为两种或更多种不同流体之间以及相同流体的多个相。