The Elm Monitor measures ozone (O3), nitrogen dioxide (NO2), total volatile organic compounds (VOC), particulate matter (PM10) noise, relative humidity (RH) and temperature (T). Some versions carry an optional nitric oxide (NO) or sulfur dioxide (SO2) sensor.
Principle of Operation
The device incorporates metal-oxide sensors to measure NO2
, O3 and VOC. It also employs a light-scattering sensor to measure PM10. Noise is detected through a microphone, while a dielectric film is used to measure temperature and relative humidity.
Elm measures pollutant levels in real
time, wirelessly transmitting the data to a cloud-based system for
storage, analysis and processing.
Dimensions: 18 x 17 x 7 cm
Weight: 2.5 kg
Mains electrical supply: 100-240 VAC, 50/60 Hz
Maximum power consumption: 8W
Sensor lifetime: N/A
Sampling mechanism: ??
Temperature operating range: -5 to +40 °C (23 to 104 °F)
Relative Humidity operating range: 5 to 95 %
Internal data logging: Memory Card
Data logging/mapping: website with log-in access
Communications: WiFi network or GSM cellular telephone network
PC communications: USB cable
Outdoor air quality (parks, schools, office parks, roadways)
Manufacturer's product webpage