Method for measuring the flow rate of exhaust gas

摘要

In a method of measuring the flow rate of an exhaust gas, an external atmosphere is caused to flow into a pipe which branches off from the main pipe to open at the other end onto the external atmosphere. The flow rate of the atmosphere in the branched-pipe is measured, and the flow rate of the exhaust gas in the main pipe corresponding to the measured value is determined based on a calibration curve.