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    • 5. 发明授权
    • Electromagnetic flow meter
    • 电磁流量计
    • US5469746A
    • 1995-11-28
    • US215339
    • 1994-03-21
    • Masao FukunagaYutaka SakuraiKouji SaitoTamio Ishihara
    • Masao FukunagaYutaka SakuraiKouji SaitoTamio Ishihara
    • G01F1/60G01F15/06G08C19/02G01F1/00
    • G01F15/063G01F1/60G08C19/02
    • An electromagnetic flow meter for industries includes a transducer and a signal processor provided separately from the transducer. The transducer having an exciting circuit, an amplifying and calculating part and a transmitting part outputs an analog flow rate signal and digital signals which are superimposed to the an analog flow rate signal to the signal processor. The analog signal sent to the signal processor is passed through the signal processor without receiving any signal processing and the digital signals are sent into the transducer or taken into the signal processor through alternating current coupling means. The data transmission is diagnosed by checking the conformity between the data stored in the signal sending part and the received data. Data set in a data setting part provided in the signal processor are sent to the transducer through a transmitting cable in which the flow rate data are also transmitted.
    • 用于工业的电磁流量计包括与换能器分开设置的换能器和信号处理器。 具有激励电路的传感器,放大和计算部分以及发送部分将模拟流量信号和与模拟流量信号叠加的数字信号输出到信号处理器。 发送到信号处理器的模拟信号通过信号处理器而不接收任何信号处理,并且数字信号被发送到换能器中或通过交流耦合装置进入信号处理器。 通过检查存储在信号发送部分中的数据与接收到的数据之间的一致性来诊断数据传输。 在信号处理器中提供的数据设定部分中设置的数据通过发送电缆发送到传感器,传输电缆也传送流量数据。
    • 6. 发明授权
    • Electromagnetic flow meter
    • 电磁流量计
    • US5458003A
    • 1995-10-17
    • US983060
    • 1992-11-30
    • Tamio IshiharaYutaka SakuraiMasao FukunagaShigeo NishinoSouzo Fujimoto
    • Tamio IshiharaYutaka SakuraiMasao FukunagaShigeo NishinoSouzo Fujimoto
    • G01F1/58G01P5/08
    • G01F1/58G01P5/086
    • An electromagnetic flow meter comprises a ceramic measuring pipe formed into a straight cylinder through which fluid to be measured flows, electromagnetic field generating device disposed adjacent to a central portion of an outer surface of the central portion of the ceramic measuring pipe for generating an electromagnetic field into a radial direction of the ceramic measuring pipe, electrodes for detecting an electric potential generated in the fluid, a case which accommodates the ceramic measuring pipe, the electromagnetic field generating device and the electrodes, and sealing members which are disposed between inner surfaces of the flanges of the case and ends of outer circumference of the ceramic measuring pipe. The case has a length longer than that of the ceramic measuring pipe and flanges at both ends thereof. Inner diameters of the flanges are slightly larger than an outer diameter of the ceramic measuring pipe. Portions of the sealing members outwardly project over the end surfaces of the flanges of the case.
    • 一种电磁流量计,其特征在于,包括:陶瓷测量管,其形成为待测量流体的直圆筒;电磁场产生装置,邻近陶瓷测量管的中心部分的外表面的中心部分设置,用于产生电磁场 陶瓷测量管的径向方向,用于检测流体中产生的电位的电极,容纳陶瓷测量管,电磁场产生装置和电极的壳体,以及设置在陶瓷测量管的内表面之间的密封构件 陶瓷测量管外壳法兰和外周端。 壳体的长度比陶瓷测量管的长度长,两端的凸缘长。 凸缘的内径略大于陶瓷测量管的外径。 密封构件的一部分向外突出在壳体的凸缘的端表面上。
    • 7. 发明授权
    • Physical quantity measurement apparatus and instrument therefor
    • 物理量测量仪器及仪器
    • US5675415A
    • 1997-10-07
    • US500325
    • 1995-07-12
    • Toshio AkatsuSadao MoriMasao Fukunaga
    • Toshio AkatsuSadao MoriMasao Fukunaga
    • G01D5/353G01B9/02G01B11/00G01D5/26G01D21/00G01L9/00G01P15/03H04N5/84G03B15/00
    • G01L9/0079G01D5/268
    • A physical quantity measuring apparatus in which the measurement range of the physical quantity such as displacement, pressure or the like can be widened. Laser beams different in wavelength are radiated through an optical fiber onto a diaphragm and the light reflected on the diaphragm and the light reflected on a reference face opposite to the diaphragm are returned to the optical fiber so that the distance between the reference face and the diaphragm which is transformed, and hence a pressure difference, is measured by a light interference method. The quantity of displacement of the diaphragm is measured optically by using laser beams different in wavelength from each other so that it is possible to make the measurement accuracy high and to effect measurement in a wide range with respect to a physical quantity such as displacement, pressure, or the like, without being influenced by a change in characteristic of the optical fiber.
    • 能够扩大诸如位移,压力等物理量的测量范围的物理量测量装置。 波长不同的激光束通过光纤被辐射到光阑上,并且在光阑上反射的光和与光阑相反的基准面反射的光返回到光纤,使得基准面和光阑之间的距离 通过光干涉法测量其变形,并因此测量压力差。 通过使用彼此不同波长的激光束光学测量光阑的位移量,使得可以使测量精度高并且能够在诸如位移,压力等物理量的宽范围内进行测量 等,而不受光纤特性变化的影响。