DILUTION APPARATUS FOR ACCURACY VERIFYING SYSTEM OF HARMFUL GAS MEASUREMENT SENSOR

摘要

PURPOSE: A diluting device of a system to verify the accuracy of a harmful gas measuring sensor is provided to minimize a phenomenon where the flow rate of the corrected gas is reduced by the pressure of the diluted gas supplied to a dilution chamber, thereby accurately verifying the accuracy of the harmful gas measuring sensor. CONSTITUTION: A diluting device of a system to verify the accuracy of a harmful gas measuring sensor comprises a dilution chamber(30), a first flow rate regulator(11), a second flow rate regulator(21), a first supply pipe(12), and a second supply pipe(22). The dilution chamber mixes the corrected and diluted gas supplied through an inlet(31). The first flow rate regulator regulates a flow rate of the dilution gas supplied to the dilution chamber. The second flow rate regulator regulates a flow rate of the corrected gas supplied to the dilution chamber. The first supply pipe transfers the dilution gas from the first flow rate regulator to the inlet of the dilution chamber. The second supply pipe transfers the correction gas from the second flow rate regulator to the inlet of the dilution chamber. The first and second supply pipes are formed into a dual pipe structure in which the second supply pipe is arranged inside the first supply pipe in a gas outlet. [Reference numerals] (AA) Diluted gas; (BB) Corrected gas