To provide a gas introducing device capable of removing the gas bonded to the inner wall surface or another part of an introducing pipe or a pipeline constituting a gas introducing carrying passage.
The gas introducing device 1 is used in a gas analyzing system for analyzing an analyzing target gas containing a gas molecule bonded to a cargo 3 or the like and equipped with the gas introducing carrying passage 4 having a gas introducing inlet part and the outlet part connected to a gas analyzer 2, the branch pipe 8 provided in the gas introducing carrying passage 4, the exhaust means 9 connected to the branch pipe 8, the first vacuum valve 6 provided to the gas introducing carrying passage 4 on the inlet part side thereof, and the second vacuum valve 7 provided to the gas introducing carrying passage 4 on the outlet part side thereof, the third vacuum valve 10 provided to the branch pipe 8 and the heating means 14 provided so as to be positioned in the gas introducing carrying passage 4 between the first and second vacuum valves 6 and 7 in the gas introducing carrying passage 4.
OKAWA HIROO
KOJIMA KATSUNORI
SASE KOSHI
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