| 摘要 |
PROBLEM TO BE SOLVED: To provide a nondispersive infrared analyzer type gas detector, when detecting specific gas contained exhalation of a person, capable of suppressing deterioration in gas detecting accuracy due to an influence of heater heating.SOLUTION: A nondispersive infrared analyzer type gas detector 1 comprises a light source 11, a measuring cell 13, an infrared sensor 15, and a heater 17. The infrared sensor 15 includes an infrared detecting element 31, a pedestal 33, a cap 35, a bandpass filter 37, and a heat conduction suppressing part 39. The nondispersive infrared analyzer type gas detector 1 includes the heat conduction suppressing part 39 which is disposed on a heat conduction path from the pedestal 33 to the infrared detecting element 31 so as to suppress heat conduction from the heater 17 via the measuring cell 13 and the pedestal 33 to the infrared detecting element 31. This configuration causes less output fluctuation of the infrared detecting element 31 due to an influence of heating by the heater 17 so as to suppress the deterioration in the gas detection accuracy caused by the heater 17. |
