Skip to Content
Find More Like This
Return to Search

Situ soil sampling probe system with heated transfer line

United States Patent

December 3, 2002
View the Complete Patent at the US Patent & Trademark Office
The present invention is directed both to an improved in situ penetrometer probe and to a heated, flexible transfer line. The line and probe may be implemented together in a penetrometer system in which the transfer line is used to connect the probe to a collector/analyzer at the surface. The probe comprises a heater that controls a temperature of a geologic medium surrounding the probe. At least one carrier gas port and vapor collection port are located on an external side wall of the probe. The carrier gas port provides a carrier gas into the geologic medium, and the collection port captures vapors from the geologic medium for analysis. In the transfer line, a flexible collection line that conveys a collected fluid, i.e., vapor, sample to a collector/analyzer. A flexible carrier gas line conveys a carrier gas to facilitate the collection of the sample. A system heating the collection line is also provided. Preferably the collection line is electrically conductive so that an electrical power source can generate a current through it so that the internal resistance generates heat.
Robbat, Jr.; Albert (Andover, MA)
Trustees of Tufts College (Medford, MA)
08/ 791,520
January 30, 1997
GOVERNMENT SUPPORT This invention was made with government support under Contract No. ANL-941922402 awarded by the Department of Energy. The Government has certain rights in this invention.