초록 ▼

A device for detecting at least one gas with an absorption band in the infrared range. The device includes a cell containing a gas mixture to be tested, an infrared radiation source, a power supply circuit for the source, an infrared radiation sensor and a signal processing line connected to the out

A device for detecting at least one gas with an absorption band in the infrared range. The device includes a cell containing a gas mixture to be tested, an infrared radiation source, a power supply circuit for the source, an infrared radiation sensor and a signal processing line connected to the output of the sensor. The cell is compact and the radiation source and the radiation sensor are held in direct contact with the gas mixture therein.

대표청구항 ▼

A device for detecting at a given gas having an absorption band in the infrared range comprising: a compact closed chamber for containing a gas sample to be detected for the presence of the given gas, said compact closed chamber having a predetermined width, a length less than ten times that of said

A device for detecting at a given gas having an absorption band in the infrared range comprising: a compact closed chamber for containing a gas sample to be detected for the presence of the given gas, said compact closed chamber having a predetermined width, a length less than ten times that of said predetermined width, and a thickness less than said predetermined width, said compact closed chamber having reflective interior walls; a detector member located within said compact closed chamber, said detector member having a predetermined surface area, said detector member directly contacting said gas sample; an infrared radiation source located within said compact closed chamber, said infrared radiation source having a thin surface radiation emitter in direct contact with said gas sample, said thin surface radiation emitter having a surface area greater than said predetermined surface area of said detector member; means for supplying discontinuous power, said supply means connected to said infrared radiation source; and a signal processor subsystem connected to said detector member whereby a signal generated by said infrared radiation source is communicated to said detector member through said gas sample such that said signal supplied by said detector member is processed by said signal processor subsystem to determine said presence of said gas in said compact closed chamber.