Multiple tube variable area flow-meter Aalborg
PTFE

VARIABLE AREA FLOW METERS, often referred to as ROTAMETERS, measure gas or liquid flow rates by relating linear displacement of an internal float or sharp-edged orifice plate to a corresponding flow rate.
As the flow rate increases, the orifice area that the flow moves through increases which explains the term Variable Area.

The ROTAMETER is a tapered tube and a float. Its low cost, simplicity, low pressure drop, relatively wide rangeability and linear output make it the most widely used VARIABLE AREA FLOW METER.

AALBORG®'s SINGLE and MULTIPLE TUBE ROTAMETERS have interchangeable tubes and floats. Used to measure liquid and gas flow rates, these flow meters are precision instruments embodying simplicity and versatility.

Shipped completely assembled, as well as individually tested and NIST calibrated, these ROTAMETERS include standard mounting fittings in a choice of materials, side plates, back plate, thick protective magnifying front shield, and OptigradTM scales among its many features.

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