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    FLOWMETER
    1.
    发明专利
    FLOWMETER 失效

    公开(公告)号：JP2001272259A

    公开(公告)日：2001-10-05

    申请号：JP2001071522

    申请日：2001-03-14

    Applicant: ABB RESEARCH LTD

    Inventor： BYATT ANTHONY ,  MATTER DANIEL ,  KLEINER THOMAS ,  PRETRE PHILIPPE

    IPC: G01F3/22 ,  G01F1/66 ,  G01F1/708 ,  G01N21/17

    Abstract: PROBLEM TO BE SOLVED: To provide a flow-rate measuring method, for a flow medium (M), in which defects of a ultrasonic measuring method is removed, and to provide a flowmeter. SOLUTION: A photoacoustic effect is used to measure the flow rate of the flow medium (M), especially a natural gas. A light emitter (1) is used to generate sound waves (S) detected by a sound detector (2), inside the flow medium (M). The light emitter (1) is not exposed to the flow medium (M) so much, as compared with a diaphragm which is used in the ultrasonic measuring method.

    APPARATUS AND METHOD FOR MEASURING FILLING LEVEL USING GAMMA-RADIATION AND VIRTUAL LINER SENSOR ARRAY
    2.
    发明专利
    APPARATUS AND METHOD FOR MEASURING FILLING LEVEL USING GAMMA-RADIATION AND VIRTUAL LINER SENSOR ARRAY 失效

    公开(公告)号：JPH1114437A

    公开(公告)日：1999-01-22

    申请号：JP13250598

    申请日：1998-05-15

    Applicant: ABB RESEARCH LTD

    Inventor： BYATT JOHN ANTHONY ,  KLEINER THOMAS ,  MATTER DANIEL ,  RUEGG WALTER

    IPC: B01D21/32 ,  G01F23/288

    Abstract: PROBLEM TO BE SOLVED: To obtain an apparatus whose structure is simple and solid and by which the filling level can be measured with good vertical spatial resolution by a method wherein a rod-shaped light-conducting scintillator is attached so as to face a plurality of γ-radiators and γ-rays are detected by photodetectors at one end or both ends of the scintillator. SOLUTION: γ-rays 5 from a plurality of γ-radiators 2 which are arranged vertically are made parallel by an output collimator 3 so as to be passed through a medium 6 to be measured (e.g. water 6a, oil 6b), and a scintillation light flash 11 is generated inside a scintillator 10 at a prescribed response probability. The light flash 11 is divided into two light components by the scintillator 10 so as to be detected at both ends of the scintillator 10. Then, the generation place of the light flash 11 is decided on the basis of the difference in the propagation time between both signals so as to discriminate the γ-radiator 2 as a cause. Then, by making use of a fact that γ-absorption depends strongly on the density of the medium 6, the difference in the density between, e.g. the water 6a and the oil 6b is detected, the medium 6 through which the γ-rays are passed is decided, and the density profile of the medium 6 inside a separator tank is displayed.

    GAMMA RAY DENSITY PROFILE SENSOR WITH PASSIVELY COOLED PIN PHOTODIODES
    3.
    发明申请
    GAMMA RAY DENSITY PROFILE SENSOR WITH PASSIVELY COOLED PIN PHOTODIODES 审中-公开
    被动伽马射线密度档传感器风冷PIN光电二极管

    公开(公告)号：WO0077502A3

    公开(公告)日：2001-03-29

    申请号：PCT/CH0000293

    申请日：2000-05-25

    Applicant: ABB RESEARCH LTD ,  BYATT ANTHONY ,  MATTER DANIEL ,  KLEINER THOMAS ,  PRETRE PHILIPPE ,  RUEEGG WALTER

    Inventor： BYATT ANTHONY ,  MATTER DANIEL ,  KLEINER THOMAS ,  PRETRE PHILIPPE ,  RUEEGG WALTER

    IPC: B01D17/02 ,  E21B43/34 ,  G01F23/288 ,  G01N9/24 ,  G01N23/04 ,  G01N23/08 ,  G01N23/12

    CPC classification number: B01D17/0208 ,  E21B43/34 ,  G01F23/288 ,  G01N9/24

    Abstract: The invention relates to a sensor (1) for measuring density profile using gamma rays (5), which is particularly suitable for measuring the level in oil separator tanks. The known measuring principle involves conducting locally resolved measurement of a density-dependent gamma ray transmission of a medium (6a, 6b, 6c) by a vertical linear array (13) of photomultipliers( 7) and using said measurement to determine the location of an oil/water (6c) boundary layer. According to the invention, the gamma ray density sensor (1) is equipped with PIN photodiodes (10) instead of photomultipliers (7). Means for passive cooling for said photodiodes (10) are also provided. This considerably simplifies the structure, operation and maintenance of the sensor and improves local resolution and service life of the sensor (1). Passive cooling can be easily realized by building a thermal bridge (12) between the warm photodiodes (10) and the cool ambient medium or the cool wall (14) of the separator tank. Usability of the sensor (1) under difficult operating conditions and in non-easily accessible locations is generally improved.

    Abstract translation: 本发明公开了一种测量使用伽马射线（5）的密度分布，这是特别适合于在Ölseparatortanks水平测量的传感器（1）。 该介质的密度依赖性伽马射线透射（6A，6B，6C）以空间分辨从光电倍增管（7）的垂直线性阵列（13）测得的，和用于确定一个边界层油/水的位置（图6c），则使用已知的测量原理是基于。 根据本发明的光电倍增管代替（7）配备有PIN光电二极管（10），并且是光电二极管（10）的伽玛射线密度传感器（1）包括用于被动冷却（12，14）的装置。 其特征在于所述传感器（1）可被大大简化和（1）提高了传感器的局部分辨率和使用寿命的安装，操作和维护。 被动冷却容易被温暖的光电二极管（10）和冷周围介质或设置在分离器的凉壁（14）之间的热桥（12）来实现的。 总体而言，所述传感器（1）的操作能力在困难的操作条件下得到改善，在难以到达的地方。

    Gas meter
    6.
    发明专利
    Gas meter 未知

    公开(公告)号：CZ20024007A3

    公开(公告)日：2003-05-14

    申请号：CZ20024007

    申请日：2001-05-31

    Applicant: ABB RESEARCH LTD

    Inventor： MATTER DANIEL ,  PRETRE PHILIPPE ,  KLEINER THOMAS ,  WENK ALEXANDER

    IPC: G01F3/22 ,  G01F1/692 ,  G01F1/696 ,  G01F1/74 ,  G01F15/04 ,  G01F25/00

    Abstract: Determining a gas mixture consumption comprises calibrating a gas meter as the energy measuring device, where the calibration is based on a base gas mixture; and multiplying the measured energy consumption value with a correcting factor which considers the calorific value of the gas mixture. The calorific value is determined by an external unit. An Independent claim is also included for the gas meter used in the process. Preferred Features: Sensor signal values are determined for the calibration depending on the flow rate of a calibrating gas, and stored in the gas meter. The calibrating gas is air or oxygen.

    FLOW METER
    9.
    发明专利
    FLOW METER 未知

    公开(公告)号：CA2339699A1

    公开(公告)日：2001-09-15

    申请号：CA2339699

    申请日：2001-03-08

    Applicant: ABB RESEARCH LTD

    Inventor： MATTER DANIEL ,  BYATT ANTHONY ,  KLEINER THOMAS ,  PRETRE PHILIPPE

    IPC: G01F3/22 ,  G01F1/66 ,  G01F1/708 ,  G01N21/17

    Abstract: A photoacoustic effect is used in order to measure a flow rate of a flowing medium (M), in-particular of natural gas. A light emitter (1) is used to produce in the medium (M) a sound wave (S) which is transmitted by the medium (M) and detected by a sound detector (2). The light emitter (1) is less exposed to the medium (M) than a diaphragm such as used in the ultrasonic method.

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