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    • 6. 发明公开
    • SELF-DIAGNOSING DIFFERENTIAL PRESSURE FLOW METER
    • 自诊断差压式流量计
    • EP2893301A1
    • 2015-07-15
    • EP13771248.5
    • 2013-09-05
    • McCrometer Inc.
    • AYERS, Jared, StevenDAVIS, Gerald, E.HOBBS, Clinton, PaulMIKKELSEN, Eric, Dahl
    • G01F1/36G01F1/74
    • G01F1/36G01F1/74G01F1/88G01F15/06
    • An aspect provides a method of metering flow through a fluid conduit having an obstruction therein, including: placing an obstruction body within the conduit; generating at least two differential pressure measurement signals using at least three different pressure ports, said at least three different pressure ports comprising: an upstream pressure port; a downstream pressure port; and an auxiliary pressure port; wherein at least one of the upstream pressure port, the downstream pressure port, and the auxiliary pressure port is positioned at an angle between 0 and 90 degrees with respect to a conduit wall; establishing a baseline relationship between the at least two differential pressure measurement signals; and determining if the baseline relationship between the at least two differential pressure measurement signals differs by a predetermined amount. Other aspects are described and claimed.
    • 一个方面提供了一种通过其中具有障碍物的流体导管来计量流量的方法,包括:将阻塞体放置在导管内; 使用至少三个不同的压力端口产生至少两个压差测量信号,所述至少三个不同的压力端口包括:上游压力端口; 下游压力口; 和辅助压力端口; 其中所述上游压力端口,所述下游压力端口和所述辅助压力端口中的至少一个相对于导管壁以0度和90度之间的角度定位; 建立所述至少两个差压测量信号之间的基线关系; 以及确定所述至少两个差压测量信号之间的基线关系是否相差预定量。 描述并要求保护其他方面。