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Title: Sonic Nozzle Proving
Author: Jim Albert
Source: 2000 Appalachian Gas Measurement Short Course
Year Published: 2000
Abstract: Gas meter proving is a fundamentally simple process, involving only five things: 1. Control 2. Index reading 3. Volume measurement 4. Computation 5. Reporting pass some air through a meter how much air does the meter say it was? how much air was it really? find the ratio between the two volumes save the results This is all very evident when you prove manually using a bell. You operate the bell controls by hand you read the meter index and the bell scale by eye, the computation is basically dividing the scale reading by two cubic feet, and you write the results on a card.

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