Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1991-02-19
1992-09-29
Williams, Hezron E.
Measuring and testing
Sampler, sample handling, etc.
Capture device
175 20, 175 21, G01N 110
Patent
active
051506220
ABSTRACT:
A device for sampling gas vapor underground has a probe tip designed to be driven into the ground. The probe tip has a removable sheath that covers a tube having an enlarged conical tip with the tube having multiplicity of apertures in the tube to gather soil gas vapors through the apertures and conduct them through a flexible plastic tube attached to the probe up to the surface of the ground to be monitored. The probe has a flexible disc attached thereto above the apertures to protect the apertures from being filled with earth from above. The apertures also have a screen around them to prevent earth from entering the apertures to plug them. After the probe is in place in the earth, the removable sheath is pulled above ground, leaving the probe to gather gas samples for collection and evaluation at a collection point above ground.
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Cornaby K. S.
Williams Hezron E.
Wisnia Howard
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