A design scheme of the intelligent metal tube variable area rotameter is proposed according to the angular position measuring principle of the magneto resistance sensor.

根据磁阻传感器的角位移测量原理，提出智能金属管浮子流量计的设计方案。

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Compared with conventional magneto sensors, giant magneto resistance (GMR) sensor has the advantages of high sensitivity, high reliability, wide measurement range, small volume and low price.

与传统的磁敏传感器比较，巨磁阻传感器具有灵敏度高、可靠性好、测量范围宽、体积小、价格低等优点。

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Compared to most conventional sensors, giant magneto-resistance (GMR) sensor has the advantage of the high sensitivity, high reliability, wide measurement range, small volume and low price.

与传统的磁性传感器相比，巨磁阻传感器具有灵敏度高、可靠性好、测量范围宽、体积小、价格低等优点。

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