Beijing days Rui Boyuan provide portable dust detector PC-3A + (desktop) laser continuous respirable dust tester PC-3A laser dust monitor for air in public places respirable dust (PM10 / PM2.5 / TSP) concentration and Cleanliness of 10,000 to 300,000 units of volume of air in the class environment particle size (0.3 to 10.0) Number μm dust particles. Is disease prevention and control centers, health surveillance, environmental monitoring and other departments in real-time dust over the project to quickly measure new generation of intelligent measurement instruments. The instrument uses advanced semiconductor laser light scattering theory to measure the source of dust in the air highly sensitive non-contact measurement. By a single-chip microprocessor management and control the whole process of testing, the use of high-resolution large-screen high-brightness LCD display, full Chinese display. Instrument comes with the ambient temperature and relative humidity test equipment to facilitate the user to check the detection of the environment. The equipment is small, easy to carry, with a test speed, high sensitivity, good stability, light weight, simple operation, the advantages of AC and DC. No external power supply suitable measurement occasions. It can be widely used in various public places and electronics, optics, food, aerospace and aviation. The apparatus according to China's health industry standards: "public places, the air of respirable particulate matter (PM10) Determination of light scattering method" (WS / T 206-2001) design. The main technical indicators: 1, dust measurement files do: PM10, PM2.5 and total dust (TSP); Optional 40MM filter line sampler; 2, respirable dust measurement range: 0.001 ~ 10mg / m3; in TSP mode maximum range 100mg / m3; 3, the detection sensitivity: 0.001mg / m3; 4, do not measure the size range: (0.3, 0.5, 0.7, 1.0, 2.5, 5.0) μm six-speed displayed simultaneously; 5, the air sample flow: 2.83L / min (0.1 ft 3 / min); 6, sampling time: 1 minute, 2 minutes ... 10 minutes; you can manually adjust the time. Direct-reading dust concentration (mg / m3); 7, humidity automatic correction; 8, data storage capacity: 1000 sets of data, you can always check printing; 9 is connected with the computer, data mass storage, network transmission, remote monitoring (need A network, software support), you can print test results; 10, the instrument has a programmable clock chip, the measurements provide accurate date and time information; 11, the working environment: temperature (0-35 ℃), humidity RH (20 -70)%; 12 Power supply: 220V AC power supply; built-in high-capacity lithium battery, fully charged can be used continuously for more than 4 hours; 13, instrument configuration temperature and humidity sensor; 14, Volume: 200mm × 170 mm × 70 mm; 15, Weight; about 900g.