Wireless particulate matter sensor
The Particulate Matter Sensor W20 measures the concentration of fine particles (PM10) and ultrafine particles (PM2.5) in the air, within the range of 0 to 500 µg/m³.
The sensor is equipped with an OLED color display which shows sensor information and the measured values. This makes the sensor suitable to use as an independent measuring instrument. By default, sensor shows the concentration of PM2.5 particles. Briefly press the power button to display the concentration of PM10 particles. When using the sensor with the Coach software both ranges are displayed simultaneously.
The sensor can be used wirelessly via Bluetooth or wired via USB with the Coach 7 or Coach 7 Lite programs/apps on computers (Windows and Mac), Chromebooks and mobile devices (Android and iOS).
Technical specifications:- Measuring ranges: 0 - 500 µg/m³
- Resolution: 1 µg/m³
- Warrantee: 24 months
- OLED display: 0.96” 128 x 64px
- Temperature range: between 0°C and 40°C
- Maximal sampling rate: 100 Hz
- Battery life: 6h when full (rechargeable)
- Connection: Bluetooth 5, Low Energy (Mac, Android, iOS) Bluetooth 2.1, Classic (Windows) or USB-C 2.0
All specifications of the sensor are described it its
User guide.
Suggested experiments:- Measuring PM2.5/PM10 levels in various indoor locations (e.g., classroom, auditorium, in a kitchen) and outdoor locations (e.g., school entrance, bicycle shed where mopeds/scooters arrive and depart, street during and after rush hour, playground, parking lot).
- Measuring PM2.5/PM10 levels before, during, and after activities that generate particles indoors, such as burning candles, deodorants, hair sprayers.
- Collecting measurements of PM2.5/PM10 levels at various times of the day (morning, midday, afternoon) to investigate how air quality fluctuates over the course of a day.
- Measuring particulate matter levels during different weather conditions (e.g., sunny, rainy, windy) to explore how weather influences particulate matter concentrations.
- Measuring particulate matter levels before and after using an air purifier.