【摘要】 <正> 随着我国原子能工业的发展,对呼吸道个人防护用具(简称防尘护具)的防护性能提出了更高的卫生学要求。对即使是小于1微米的放射性气溶胶或有害烟尘也需要有大于99％的防护效率。为健全与加强对高效防尘护具和过滤材料的性能研究与质量鉴定,确保有关人员的健康和安全,我们研制的SGL-83型滤料效率测试装置将提供有效、可靠、简便的测试手段,其粒子计数系统的可测效率为≤99.99％,粉尘计重系统的可测效率为≤99.5％。更多还原

【Abstract】 The advantages of the device are simple in structure, easy for operation and stable- in performance. It provides multifunction such as generating both the small size aerosol and large size dust, conducting the filtration efficiency and performance tests for dusts for protection equipment or filter media.Some new techniques have been employed to produce test dust: Ultrasonic fog generator for producing aerosol and silicon controlled electromagnetic oscillation methods for generating dust. Therefore the concentration and quantity of the test dust are stable and controllable.The device has the maximum detectable efficiency of 99.99% for aerosol and 99.5% for dust.The tests on various dust protection equipment and filter midia showed the good stability and reproducibility of the device.更多还原