| 摘要 |
Disclosed are a gas flow meter and a method for measuring the velocity of gas, wherein the reliability of real time measurement may be improved and a specific gas may be selected and measured. The gas flow meter includes: at least a gas detecting section for radiating light having a wavelength that is absorbed by a specific gas to the specific gas, of which flow velocity is to be measured, in a mixture gas including at least one gas, detecting the irradiance absorption of the corresponding wavelength of the specific gas, and providing a detection signal corresponding to the detected irradiance; and a control section for calculating the flow velocity of the specific gas to be measured in real time based on the detection signal, which is provided from the gas detection section. Therefore, the flow velocity of a specific gas may be selectively measured in real time without any additional correction in the case that various kinds of gases are mixed. |
