Method and means for continuously sampling a fluid
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United States of America Patent
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-
Dec 2, 1980
Grant Date -
N/A
app pub date -
Feb 9, 1979
filing date -
Feb 9, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved air-sampling pump of miniature size ideally suited for carrying on a person includes monitoring circuitry which controls motive pump-energizing signal applied to an air pump to ensure that sampled air is pumped through a test chamber at a substantially constant rate over an extended period of time and also includes alarm circuitry which provides comtemporary and residual indications of interrupted flow rate during the sampling period.
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