Product Mode： Fixed mode of products： Test Speed： Number of tests： Equipment size： Description: This device is a wind volume measurement system developed and manufactured according to standards such as GB/T 17713 "Range hoods" and GB/T14806 "AC ventilators and their speed controllers for household and similar use". This air performance test device is mainly designed for the "Exhaust Range Hood Air Performance Test Device" in Appendix C of GB/T17713-2011 "Range Hood" standard. This device can only be used for testing "Exhaust Range Hood" and cannot be used for testing "Circulating Range Hood".