Newly upgraded YR-FD100 dust concentration measuring instrument, with comprehensive coverage from small micrograms to large milligrams (up to 1000mg/m ³), suitable for low concentration to welding high dust scenarios in the workshop. Equipped with dust-proof and explosion-proof design, certified with CPA and other certifications, with complete qualifications, supporting customized range. There are also multiple models to choose from, such as portable models, which meet monitoring needs in one stop.