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    • 23. 发明授权
    • Multiple-function fluid measuring and transmitting apparatus
    • 多功能流体测量和传输装置
    • US5469749A
    • 1995-11-28
    • US411922
    • 1995-03-28
    • Satoshi ShimadaSeiichi UgaiTomoyuki TobitaYoshimi Yamamoto
    • Satoshi ShimadaSeiichi UgaiTomoyuki TobitaYoshimi Yamamoto
    • G01F1/38G01F1/36G01F1/37G01F1/42G01F1/44G01F1/50G01F15/02G01F23/14G01F23/16G01L9/00G01L19/00G01L7/08
    • G01F1/363G01F1/372G01F1/383G01F1/44G01F23/164G01L19/0092G01L9/0054
    • A measuring and controlling system is provided which has a control function as well as a measurement function to perform the measurement and control of fluid amounts such as the flow rate, pressure, liquid level, weight and so on by itself in the same field. A pressure receiving unit is directly mounted on a pipe or a container, in which a fluid under measurement exists, in order to detect the temperature, differential pressure and static pressure of the fluid under measurement independently of each other. Means for storing the characteristic of fluids under measurement is provided such that the mass flow rate, weight and liquid level can be calculated. By providing the transmitter with the measurement and control functions, the measurement and control of fluid amounts such as flow rate, pressure, liquid level, weight and so on can be performed in a closed form, thereby making it possible to simplify a correction procedure for the static pressure and temperature, improve the responsibility, and enhance the control performance of the whole plant. Also, a measuring and controlling system can be realized which reduces a wiring amount for connecting with an upper level control unit.
    • 提供了一种测量和控制系统,其具有控制功能和测量功能,以在相同的领域中自身进行流量,压力,液位,重量等流体量的测量和控制。 压力接收单元直接安装在其上存在测量流体的管道或容器上,以便彼此独立地检测待测流体的温度,压差和静压力。 提供了用于存储测量流体特性的装置,以便可以计算质量流量,重量和液位。 通过向变送器提供测量和控制功能,可以以封闭形式执行流量,压力,液位,重量等流体量的测量和控制,从而可以简化对 静态压力和温度,提高责任感,提高整厂的控制性能。 此外,可以实现减少与上位控制单元连接的配线量的测量和控制系统。