... :0.2%~0.5% 2.4~20mA signal and pulse output 3.CE.ISO9001 4.good quality Vortex flowmeter -flow ... reliability, easy to use3 .Lower limit of flow rate,up to the conventional vortex flowmere1/2to 1/44. Unique ... of amplify board,5.Wide range in general,up tp 1:30pm,~1:506.Easy debug and simple ... display and cumulative total,percentage ,frequency display;9.4~20mA output,0~5KHZ frequency output,the vortex pulse ...