| 摘要 |
A feedback lever of a positioner detection device for measuring a valve opening rate is provided to accurately and precisely measure the valve opening rate by using a detection unit and a compensation unit for the valve opening rate. A feedback lever of a positioner(A) detection device for measuring a valve opening rate includes a main shaft(31), a feedback lever(32), a detection unit(30), a fixed shaft(41), a compensation unit(40). The main shaft is rotatably installed through a body(B) of the positioner. The feedback lever is installed on a lower part of the main shaft and moves as a valve is getting open. The detection unit is installed on an upper part of the main shaft and detects an amount of movement of the feedback lever. The fixed shaft is fixed on the body having a certain gap from the main shaft. The compensation unit is installed on the fixed shaft and compensates the amount of the movement of the detection unit.
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