Ultrasonic gas sensing technology is based on the principle of sound velocity difference in ultrasonicpropagation (also known as ultrasonic time difference method) to calculate thegas concentration and flow rate. The ultrasound wave propagation speed in the downstream direction will increase, and the backward direction will decrease.

Cubic laser dust sensor PM3006 is selected as"Application Innovation Excellent Project Award" by The China Sensorsand loT industry Association (also known as SIA) in the first "SIAPerception Pilot Excellent Project Collection". Cubic Laser Dust SensorPM3006, adopting unique laser scatteringmeasurement technology, could realize outdoor dust online accurate monitoringand simultaneous concentration measurement of PM2.5, PM10 and TSP in air underextreme outdoor conditions. Widely used in urban air pollution monitoringnetworks programs at home and abroad.