Tandem rotor turbine meter and field calibration module
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United States of America Patent
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Dec 12, 1995
Issued Date -
N/A
app pub date -
Sep 22, 1993
filing date -
Nov 7, 1991
priority date (Note) -
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Abstract
Methods and an apparatus for measuring gas flow with greater reliability than earlier single-rotor and double-rotor turbine meters and dual turbine meter systems are disclosed. The apparatus comprises two independent rotors, in close proximity of each other, housed in the same meter body, but isolated from the effects of each other. No pressure and temperature correction are needed for accuracy performance comparison between the two rotors. Because of the two rotor averaging technique, the reliability of the volume totalization is greatly improved over earlier double-rotor and single-rotor designs.
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