Related U.S. Application Data
(60) Provisional application No. 60/412,575, filed on Sep. 23, 2002.
G01N 21/00 G01N1/00 G01N 33/24 GO IV 3/15 GOIV 5/00 U.S. CI
422/67; 73/864.73; 73/864.74;
Field of Classification Search 422/88 92,
422/67; 436/174; 250/288,253; 73/864, 73/73, 864.74, 23.41, 23.35, 23, 22, 19.02,
See application file for complete search history.
U.S. PATENT DOCUMENTS 3,491,595 A * 1/1970 Griffeth 374/142
FOREIGN PATENT DOCUMENTS
EP 1203955 5/2002
Thoman M. Christy. 'A Permeable Memocer Sensor For The Detection ofVolatile Compounds in Soil. National Groundwater Association's Outdoor Action Conference in Las Vagas, Nevada, May 1998.
Primary Examiner—Jill Warden
Assistant Examiner—Keri A Moss
(74) Attorney, Agent, or Firm—Venable LLP; Ralph P. Albrecht; Kyle D. Petaja
An enhanced scanning solutions module is disclosed including a flow control subsystem; a detector subsystem coupled to the flow control subsystem; a dryer/moisture separator subsystem coupled to the flow control subsystem; a sampling subsystem coupled to the flow control subsystem; and a software control subsystem coupled to the flow control subsystem, the detector subsystem, the dryer/moisture separator subsystem, or the sampling subsystem. The module can include a sampling subsystem having: a sample loop; an absorbent trap; or a gas chromatography injection port. The module can further include an exhaust; a pneumatic supply; a power supply; a bypass module; a feedback signal; or a pressure control subsystem.
32 Claims, 20 Drawing Sheets