System and method for detecting filter material counting efficiency based on monodispersed aerosol

• Main Authors: CHENG YUXING, YU TAO, YE SUISHENG, JIANG FENG, ZHANG ZHENZHONG
• Format: Patent
• Language: Chinese; English
• Published: 09.05.2012
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a system and a method for detecting filter material counting efficiency based on monodispersed aerosol. The system comprises a monodispersed aerosol generator and a mixing box that are respectively set and communicated; the monodispersed aerosol generator is sequentially communicated with a first valve, an aerosol generating flowmeter, a first filter and a first high pressure air source; the mixing box is sequentially communicated with a second valve, a dilution flowmeter, a second filter and a second high pressure air source, and is also communicated with a third valve and a third filter in sequence; the side wall of the mixing box is fixedly connected with a hygrothermograph one end of which extends into the mixing box; the mixing box is respectively communicatedwith an inlet of a filter material clamp and a fourth valve; an outlet of the filter material clamp is respectively communicated with a fifth valve and a filtering flowmeter; the fourth valve and thefifth valve are respective