Flow rate sensing apparatus of air sampling pump

摘要

The present invention relates to a flow rate measurement assist apparatus of an air sampling pump, which comprises: an inflow unit having an inflow flow path into which a fluid discharged from an air sampling pump flows; a guide unit having a guide flow path communicating with the inflow flow path and guiding the fluid flowing through the inflow flow path to a flow rate detection sensor; and a discharge unit having a discharge flow path communicating with the inflow flow path to guide the fluid flowing through the inflow flow path to a sample collection unit, and having a narrower flow path cross section area that that of the inflow flow path. Therefore, a change in a flow rate of air discharged from the air sampling pump can be accurately measured.