◆β - ray + DHS (dynamic heating system), one of the methods recommended by national central station, is adopted.
◆ The instrument is designed according to the requirements of the new ministry standard HJ 653-2013. The concentration is μ g / m3, and the minimum display unit is 0.1 μ g / m3, with higher accuracy.
◆ The instrument adopts the continuous detection mode of sampling and testing at the same position, which fundamentally solves the measurement error caused by moving paper tape.
◆ The instrument is equipped with multiple sensors, which can automatically judge the load on the filter paper, and automatically move the paper when the load reaches the rated value.
◆ The flow measurement of the instrument adopts digital sensor, and the flow control part adopts PID precise control regulating valve. When the outdoor temperature is (- 30 ~ 60) ℃, the inlet flow of the cutter is accurately controlled to stabilize at 16.67l/min.
◆ It has outdoor temperature and humidity measurement and adopts digital transmission mode to ensure the reliability of measurement, calculation and control.
◆ The instrument has the function of wireless remote transmission (optional), which can monitor the parameters of the instrument remotely at the same time.
◆ The instrument input is compatible with both button and touch modes.
◆ The instrument can be extended to monitor TSP, PM 10, PM 5, PM 2.5 and PM 1 (the cutter has the test report of the national authority department).
◆ The instrument has passed the first, second, third and fourth quarter tests of national environmental protection monitoring station, and is one of the recommended products of PM2.5 instrument.