FLOW METER PROVING METHOD AND SYSTEM
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United States of America Patent
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Issued Date -
Jun 2, 2011
app pub date -
Feb 27, 2009
filing date -
Feb 27, 2008
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Abstract
A flow meter prover (120, 220, 320) is provided with multiple pairs of detectors to record multiple calibrated prover volumes with a single pass of the displacer 124. The prover conduit 122 may be fitted with a first pair of detectors (116, 118) for a first calibrated prover volume (V.sub.1) and a second pair of detectors (130, 132) for a second calibrated prover volume (V.sub.2). A single pass of the displacer may trip more pairs of detectors (216, 218, 230, 232, 234, 236) corresponding to more calibrated prover volumes (V.sub.3, V.sub.4, V.sub.5). A flow computer 326 may be configured to record more than two calibrated prover volumes (V.sub.6, V.sub.7, V.sub.8, V.sub.9) using only two pairs of detectors (316, 318, 330, 332) and a displacer (324).
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