Pride Controls & Systems Pvt Ltd is an ISO 9001 : 2015 Certified Manufacturing company of High Performance Industrial grade flow measuring instruments . The Pride PCMT-H Metal tube variable area flowmeter is to measure the flow rate of liquid, steam, gas and oil with greater flexibility & less pressure drop in various industrial applications. PRINCIPLE OF OPERATION OF VARIABLE AREA FLOW METER This Flowmeter works based on variable area principle. When the fluid flow increases, the float in a metal tube raises and the float’s height is directly proportional to the flow rate of the fluid. The higher the flow rate the higher the float is raised. The float moves in a tapered tube up or down in proportion to the flow rate of the fluid and the annular area between the float and the tube.