... high accuracy, signal output It is a kind of volumetric flow measuring instrument, which is mainly used in oil, chemical, ... l It not only can display the accumulated flow rate, but also can display instant flow rate.l It use two batteries (3.6v ... (antirust treatment), special resin or aluminum castReversible rotator(iii). Flow range unit: L/h specsNominal diameter(mm)kerosenelight oilheavy oilLNV50KB ...