| 摘要 |
A method and apparatus integrates differential pressure measurements and absolute pressure measurements to provide virtual absolute pressure measurements over a wide range of pressures on a single integrated scale. To achieve the foregoing objects the method and apparatus for measuring absolute pressure in a chamber (see figure) includes determining a correlation factor between absolute and differential pressure measurements taken simultaneously at a pressure where the absolute pressure in the chamber can be measured accurately, and adjusting differential pressure measurements with the correlation factor to provide virtual absolute prenure measurements.
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