A pneumatic infrared ray detector for use in a gas analyzer provided with a gas-slowly leaking mechanism capable of not only controlling a quantity of gas leaked in high accuracy but also increasing a range capable of controlling said quantity of gas leaked is provided. A body is provided with gas chambers...http://www.google.com/patents/US5362967?utm_source=gb-gplus-sharePatent US5362967 - Pneumatic infrared ray detector for use in gas analyzer
