Conditional sampling technique for flux measurement
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 26, 1991
Grant Date -
N/A
app pub date -
Feb 26, 1990
filing date -
Feb 26, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A conditional sampling technique for flux measurement involves measuring vertical velocity of the movement of air or gas, collecting samples of the air and its components in an 'up' canister when the vertical velocity in the upward direction exceeds a threshold, and collecting samples in a 'down' canister when the vertical velocity in the downward direction exceeds a threshold. Sensing intervals for measuring and collecting are repeated for a predetermined sampling time period. The passageways to the canisters are always either fully closed or fully opened. At the end of the sampling time period, the standard deviation of the vertical velocities is calculated, and the concentration of a particular component in the samples collected in the canisters is determined by chemical or other analysis. The flux of that component is determined by multiplying a newly discovered coefficient of proportionality and the standard deviation and the difference in concentrations of the particular component collected in the up and down canisters.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully