| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly accurate laser type gas analyzer capable of suppressing the influence of dust in a non-powered manner.SOLUTION: A laser type gas analyzer 100 includes: a gas sampling tube 31 of a cylindrical member to be inserted into the inside of an exhaust gas channel 91; and a pair of light emission part 11 and light reception part 12 such that a forward optical path LT and a return optical path LR as the optical path of laser pass through the internal space of the gas sampling tube 31. Then, the exhaust gas of the exhaust gas channel 91 to be introduced from a gas introduction hole 33 opened in the gas sampling tube 31 is turned into a circulation flow following the inner wall of the gas sampling tube 31. |
