Patent ID: 6098448
Filing Date: 2000-08-08
Classification: G01N

Abstract:
An apparatus for determining soil permeability at a particular extraction zone, the apparatus comprising:(a) an elongated penetrometer rod of predetermined diameter having an internal channel formed therein;(b) a cone attached on one end of the rod;(c) a plurality of measurement ports formed at specific locations upon the rod, each measurement port being filtered and in gas-flow communication with the channel;(d) a plurality of injection ports formed upon the rod in gas-flow communication with the channel;(e) a means, partially located within the rod's channel, for communicating pressure information, each means for communicating pressure information having a first end and a second end, each means for communicating pressure information being attached to each measurement port at each first end; and(f) a means for sensing pressure information attached to the means for communicating pressure information at the means for communicating pressure information's second end, the means for sensing pressure information being remotely located from the rod, the means for sensing pressure information adapted to employ a one dimensional steady state spherical porous flow model to obtain a desired result.