涓昏浜у搧鏈塁L2銆丠2S 銆丆O銆丠2銆丄sH3銆丼iH4銆丠CL銆丠F銆丗2銆丠CN銆丯H3銆丆OCL2銆丯O銆丯2H4銆丱3銆丯O2銆乀BM銆乀HT銆丆LO2銆丆H4絳夛紝騫舵湁閰嶅鐢佃礬鐗堝彲鐩存帴杈撳嚭4~20mA鐢墊祦銆?nbsp;