Fluid Metering is one of the most important aspects of process control and recent technological developments have provided the user with a wide range of flow measurement techniques. Generally selection of a flow meter depends upon it’s performance features but in the recent times greater emphasis is being given for consistency in accuracy, simplicity of operation and “Energy Conservation”. To meet this challenging demand of today’s process industries “RRF” offers a simple flow measuring sensor – Delta Tube with immense features and advantages over other conventional primary flow elements such as Orifice Plate Assembly, Flow Nozzle, Venturi etc