To obtain a gas supply device to easily continuously supply an object gas easily at a predetermined concentration and to implement a technique capable of more reliably distinguishing and analyzing odor components, etc.
This device is provided with a high-concentration gas inlet part 1 to let a high-concentration gas flow in, a diluting gas inlet part 2 to let clean air flow in as a diluting gas, the above-mentioned high-concentration gas, a gas outlet supply part 3, and a mixing chamber 4 to prepare a mixed gas of the high-concentration gas and diluting gas. A reference gas detecting element 5 is provided inside the mixing chamber 4. The sensitivity of the reference gas detecting element 5 is detected by a gas detecting circuit 6 and outputted to a microcomputer M. In addition, an agitating device 7 to uniformly mix the high-concentration gas and diluting gas which flow inside is provided inside the mixing chamber 4.
MAEKAWA TORU
SUZUKI KENGO
