BS EN 60534-6-2:2001 工業過程控制閥 將定位器連接到控制閥的安裝細節 定位器安裝在旋轉執行器上 定位器安裝在旋轉執行器上
Industrial-process control valves. Mounting details for attachment of positioners to control valves. Positioner mounting on rotary actuators. Positioner mounting on rotary actuators