空气净化器环境测试舱性能检测方法——关于空气净化器几个问题的探讨（5）
Performance testing method of air cleaners in environmental test chamber —Discussion on several problems about air cleaners (5)
摘要：
对空气净化器在环境测试舱中检测时的测点位置及检测方法等进行了探讨。指出环境测试舱中被测空气净化器不应放在测试舱中央；应在空气净化器前方0.8 m高度水平面内均匀布置不少于11个测点，用传感器同时得到各测点数据；根据测得的平均浓度Nτ与初始浓度N0的比值，查图求出衰减系数k。
关键词：空气净化器,环境测试舱,衰减系数,测点布置,性能检测方法
Abstract：
Discusses the layout of testing points and the detection method of air cleaners in an environmental test chamber. Points out that the tested air cleaner should not be placed in the center of the test chamber. There should evenly arrange not less than 11 testing points at 0.8 m height in front of the air cleaner, and the average particle concentration should be calculated based on each testing point data obtained by sensors at the same time. The attenuation coefficient can be obtained by graphical determination method according to the ratio of the average concentration and the initial concentration.
Keywords:air cleaner, environmental test chamber, attenuation coefficient, arrangement of testing point, performance testing method