This is a used to determine the concentration of dust floating in the air Transformation of conventional instruments for industrial and mining enterprises, labor safety, labor hygiene and environmental protection departments of the dust monitoring. The dust used is controlled by a high-performance suction pump, automatic time control circuit, flow regulation circuit, automatic feedback constant current circuit, undervoltage alarm circuit protection, security, power supply etc., also has a variety of pre-trap dust. Another was used to determine the impact of respirable dust concentration of complement-type devices, such pre-trap can harm the human body and non-respirable dust respirable dust separation, can breathe a collection can be mutually exclusive and non-respiratory two kinds of dust samples, their separation efficiency of the internationally recognized "BMRC" curve standard is a more reliable and practical level before the dust separation unit. The instrument uses ibl (150 ℃) rating intrinsically safe explosion-proof structure, especially for coal mines and other dangerous gases containing explosive used at the workplace.

    The machine chassis using high-strength ABS plastic and made moisture-proof, dust-proof, anti-static and other special treatment. Instrument has no pulse flow, negative pressure, load capacity, automatic timing sampling, safe, reliable, durable, easy to carry and on-site use of the advantages of its main technical indicators have reached or come close to the national advanced level.