气动变送元件 pneumatic transducing element

气动变送器 pneumatic transmitter

气动变送及控制 pneumatic transmission and control

气动压差变送器 pneumatic differential pressure transducer

气动差压变送器 pneumatic differential pressure transducer

气动压力变送器 pneumatic pressure transducer ; QBY ; pneumatic pressure transmitter

气动浮筒液位变送器 QBU

气动温度变送器 pneumatic temperature transmitter