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    • 9. 发明授权
    • Differential pressure sensing means and method
    • 差压检测装置及方法
    • US4827772A
    • 1989-05-09
    • US109565
    • 1987-10-19
    • Brian K. BakerRei-Nan R. HwanLori A. Leu
    • Brian K. BakerRei-Nan R. HwanLori A. Leu
    • G01L13/02G01L19/02
    • G01L13/025G01L19/02
    • A differential pressure sensing means and method includes an inlet receiving a fluid having a first pressure. Another inlet receives a fluid having a second pressure. A plurality of pressure sensing devices are connected to the first and second inlets. Each pressure sensing device senses a pressure differential within a different predetermined range of pressures and provides a pressure signal representative thereof. An output circuit connected to the plurality of pressure signals provides a pressure signal selected from one of the signals provided by the plurality of pressure sensing devices so as to provide a pressure signal representative of the pressure difference between the first and second pressures of the fluids.
    • 压差检测装置和方法包括:入口,接收具有第一压力的流体。 另一入口接收具有第二压力的流体。 多个压力感测装置连接到第一和第二入口。 每个压力感测装置感测在不同的预定压力范围内的压差,并提供代表其的压力信号。 连接到多个压力信号的输出电路提供从由多个压力感测装置提供的信号之一中选择的压力信号,以提供表示流体的第一和第二压力之间的压力差的压力信号。