Measurement apparatus for measuring air flowing inside pipeline

Abstract

Various embodiments include a testing apparatus capable of testing gas flowing in a duct. The apparatus may include: a housing; a sampling tube extending from the housing to be inserted into the duct, the sampling tube including a gas entry channel and a gas exit channel isolated from each other, with a gas inlet of the gas entry channel and a gas outlet of the gas exit channel disposed in a part of the sampling tube leading into the duct and disposed at the same side of the sampling tube, wherein the gas inlet and the gas outlet have matching gas through-flow areas; and a sensor module disposed in the housing and in gas communication with the gas entry channel to test gas sampled from the gas entry channel.

Dependencies are inferred from the claim text.