Method and apparatus for calibrating gas samplers
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United States of America Patent
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May 8, 2001
Grant Date -
N/A
app pub date -
Jun 3, 1999
filing date -
Jun 3, 1999
priority date (Note) -
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Abstract
A method for calibrating a personal air sampler. A desired flow rate is set, the actual rate measured and recorded through a plurality of runs, the results are automatically averaged and compared to the desired flow and the pump is automatically adjusted accordingly. The process may be repeated for a plurality of selected flow rates, and a best-fit curve computed to cover the entire range. Stability is tested by a series of sets of runs to determine erratic behavior, and an overall calibration is conducted by performing such a series of runs at each of several set point flows.
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