Terms of Use and Reproduction: Copyright, Distribution as joint owner in the copyright. Other Subject(s):Ĭollection: NASA Technical Reports Server (NTRS) Collection. Due to proper balancing of these factors, recent testing demonstrated that the balanced flow-meter performance was similar to a Venturi tube in both accuracy and pressure recovery, but featured reduced cost and pipe-length requirements. The term 'balanced' signifies that in designing the meter, the sizes and locations of the holes are determined in an optimization procedure that involves balancing of numerous factors, including volumetric flow, mass flow, dynamic pressure, kinetic energy, all in an effort to minimize such undesired effects as turbulence, pressure loss, dissipation of kinetic energy, and non-repeatability and nonlinearity of response over the anticipated range of flow conditions. The most obvious difference between them is that the standard orifice plate contains a single, central hole while the balanced flow meter contains multiple holes. Both the balanced flow meter and the standard orifice-plate flow meter are basically disks that contain holes and are instrumented with pressure transducers on their upstream and downstream faces. A secondary benefit of the reduction of turbulence is the reduction of vibration and up to 15 times less acoustic noise generation. Relative to the standard orifice-plate flow meter, the balanced flow meter introduces less turbulence and two times less permanent pressure loss and is therefore capable of offering 10 times greater accuracy and repeatability with less dissipation of energy. A balanced flow meter can be used to measure the flow of any of a variety of liquids or gases, provided that it has been properly calibrated. A balanced flow meter can be easily mounted in a flow path by bolting it between conventional pipe flanges. These flow meters are highly accurate, minimally intrusive, easily manufacturable, and reliable. ![]() No strict requirement for straight pipelines before and after the flow sensor. The balanced flow meter has improved the traditional throttle flow meters it has excellent features as below. The difference between an accurate and an inaccurate flow reading can mean a significant cost savings. Balanced flow meter is a kind of DP flow meters, and it is multi-hole orifice plate. ![]() Accurate measurements are critical to improve plant operational efficiency. Restrictions on Access: Unclassified, Unlimited, Publicly available.įree-to-read Unrestricted online access Summary: Balanced flow meters are recent additions to an established class of simple, rugged flow meters that contain no moving parts in contact with flow and are based on measurement of pressure drops across objects placed in flow paths. The A+ FlowTek’s Balanced Flow Meter has a 34 accuracy improvement and minimizes energy (pressure) loss by 50.
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