General Description The Elm Monitor measures ozone (O3 ), nitrogen dioxide (NO 2 ), 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 (SO 2 ) sensor. Principle of Operation
The device incorporates metal-oxide sensors to measure
NO 2 ,
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.
Features
Dimensions: 18 x 17 x 7 cm
Weight: 2.5 kg
Battery: NO
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
Weatherproof: Yes
Outdoor air quality (parks, schools, office parks, roadways)
Industrial areas
VIDEO
Manufacturer's product webpage