... ,flange,triclover,clamp,thread connection,etc 3,4-20mA flow meter,electromagnetic flowmeter FM11 electroomagnetic flowmeter is an inductive apparatus to ... be read straightly but also output 4-20mA current signal for purpose of memory,adjustment and control,the flowmeter is ... the speed can choose as 2m/s,the fast flow speed makes for the automatic elimination of obstructive substance glued on ...