該系列是一種采用多彈簧結(jié)構(gòu)，重量輕、體積小、性能高、輸出力大的氣動(dòng)薄膜式角行程執(zhí)行機(jī)構(gòu)。其工作原理為：由調(diào)節(jié)儀表來的電或氣信號經(jīng)定位器轉(zhuǎn)換而成的氣壓被輸入到膜室內(nèi)，作用于膜片上產(chǎn)生推力，使推桿移動(dòng)，同時(shí)壓縮彈簧直至和彈簧的反作用力相平衡，推桿的直線運(yùn)動(dòng)經(jīng)曲柄機(jī)構(gòu)轉(zhuǎn)換成角行程輸出，使輸出軸轉(zhuǎn)動(dòng)到預(yù)定的位置。

該系列執(zhí)行機(jī)構(gòu)與定位器配合使用可實(shí)現(xiàn)高精度的位置控制。

This Series features high performance, high power diaphragm actuators of a multi-spring type that are compact and light. With a positioner that receives pneumatic or electric signals, air-pressure is exerted on the diaphragm. Balancing the force of the air-pressured diaphragm and the force of the compressed spring creates a linear motion output. The scotch-yoke system converts the output to a rotating force and provides positioning to a required angle.

This Series is designed to function with a positioner except in on-off control.