Patent ID: 6139801
Filing Date: 2000-10-31
Classification: G01N,Y10T

Abstract:
A gas collecting system comprising:a portable air pump which is driven by a portable battery to suck a gas in an inspection objective space;a collection vessel, in which a collecting liquid for collecting an inspection objective gas from said gas is filled;an induction passage having one end connected to said collection vessel and the other end communicated with said inspection objective space for introducing said gas into said collection vessel;a suction passage having one end connected to said collection vessel and the other end connected to a suction port of said air pump for introducing said gas in said collection vessel into said air pump;an accumulation body connected to a discharge port of said air pump, accumulating said gas discharged from said air pump and serving as a volumeter;drying means disposed between said accumulation body and said collection vessel for drying said gas;a pressure switch detecting an internal pressure of said accumulation body;a bypass passage connecting said accumulation body to said suction port of said air pump bypassing said collection vessel; andswitching means for switching a flow path connecting said accumulation body to either one of said discharge port of said air pump and said bypass passage, and in conjunction therewith, connecting said discharge port of said air pump to an ambient air opening passage when said accumulation body is connected to said bypass passage.