Siemens Building Technologies has introduced a new fine dust sensor for buildings, rounding out its product offering for a healthy indoor climate and addressing issues surrounding the wellbeing of building occupants. The sensor can be used to monitor and visualise particle pollution and is easy to integrate into building management systems.

The new fine dust sensor is based on laser technology and measures the particle pollution of the air in two categories: PM 2.5 and PM 10, i.e. particulate matter with a diameter of 0.3 to 2.5 micrometers or 0.3 to 10 micrometers respectively. The fine dust sensor is ideal for use in a variety of buildings with a high number of occupants, such as offices, schools, universities, hospitals and public buildings.
During operation, dust particles accumulate on fine dust sensors, reducing their performance over time. The Siemens sensor has a display that is activated only when the presence of people is detected. When no presence is detected in the room, the frequency of particulate matter measurements decreases, significantly improving the service life of the fine dust sensor.
When the sensor module needs to be replaced, the device alerts users either on the display itself or, on models without a display, through an LED light. It is not necessary to buy a new device or reconfigure it. Replacing the sensor module is quick and easy and does not require any special skills.
The fine dust sensor has been calibrated to measure PM 2.5 particles and can be set to different air quality index (AQI) levels to meet specific national regulations. Laser light scattering is used to measure the particulate concentration. It has an analogue signal and a Modbus output.