The invention discloses a
gas analysis instrument capable of measuring
equivalent concentration, and belongs to the technical field of gas analyzers. A
gas analysis instrument capable of measuring
equivalent concentration comprises an instrument body, a
gas analysis system is arranged in the instrument body, a gas inlet
pipe is externally connected to the instrument body, a rotating block is rotationally connected to the interior of the gas inlet
pipe, a first filter screen plate is arranged in the rotating block, a movable groove is formed in the rotating block, and a sealing base plate is arranged in the movable groove. The sealing base plate movably abuts against the first filter screen plate, a sliding way used for sliding of the first filter screen plate is formed in the rotating block, and a sealing shell is fixedly arranged on the air inlet
pipe. The device has an
equivalent concentration measuring function, equivalent concentration data of gas can be directly obtained after equivalent and measuring point flow data are obtained, impurities in
flue gas are filtered through the filter screen plate, the filter screen plate in the gas inlet pipe can be automatically replaced, the gas collecting effect is prevented from being affected, and the device is convenient to use and popularize. Therefore, the practicability and the accuracy of gas analysis and detection are ensured.