Dust explosion-proof laser measuring instrument based on laser as the light source to meet essential safety requirements of the rapid test dust instrument. The explosion-proof equipment logo Exib Ⅱ B T3, explosion-proof certificate number is CE082051. The instrument can be directly read concentrations (mg/m3), easy to carry, easy to operate, in Zone 1, Zone 2, Ⅱ B, T3, and the following workplace groups to achieve the rapid measurement of dust concentration, but also for indoor and outdoor environment of respirable particulate matter (PM10) concentration detection. 
 Instruments in line with the Ministry of Health WS/T206-2001 "public places in the respirable air particulate matter (PM10) assay - light scattering method" standard, the Ministry of Labor LD98-1996 "air dust concentration of light scattering-type test" standards, and the Ministry of Railways TB/T2323-92 "railroad workplace dust mass concentration and determination of the relative mass concentration of the conversion method" and other industry standards