Community Air Monitor (CAM)

  • Fixed-base monitoring station
  • Measures O3, CO, CO2, PM1, PM2.5, temperature, pressure and relative humidity
  • Model 106-L miniature ozone monitor is a US EPA Federal Equivalent Method


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The Community Air Monitor or CAM is a fixed-base monitoring station that combines the Personal Air Monitor (PAM) with our Model 106-L Ozone Monitor in a NEMA weatherproof case. The PAM measures CO, CO2, PM1, PM2.5, temperature (T), pressure (P) and relative humidity (RH) using robust and reliable sensors. The ozone monitor is a highly accurate US EPA Federal Equivalent Method. The PAM can be removed easily from the CAM for mobile monitoring and participation in our AQTreks educational research project. The CAM allows a neighborhood to monitor air quality at a fixed location over time, while also allowing detailed mobile mapping to identify point sources of air pollutants. We recommend that communities install at least one CAM and provide its citizens with multiple PAMS for thorough exploration of the air quality both outdoors and indoors. Data are continuously uploaded to the web via the PAM's cellular internet connection, and the data are available to the entire community on the dashboard of the CommunityAQ website.


  • Measures O3, CO, CO2, PM1, PM2.5, temperature, pressure and relative humidity
  • Model 106-L miniature ozone monitor is a US EPA Federal Equivalent Method
  • Removable PAM for mobile measurements of CO, CO2, PM1, PM2.5, T, P and RH
  • Bluetooth data broadcast to nearby mobile phones (IOS and Android)
  • AQTreks mobile app for real-time mapping and graphing of mobile data
  • 2G/3G/LTE real time cellular data transmission to the cloud
  • Wifi connectivity addressable over the internet
  • Internal GPS for mapping mobile data
  • microSD data storage
  • Rechargeable 3.7 V, 200 mAh battery with 8-hr life



Instrument/Sensor Specifications (per manufacturer)


Ozone (O3)

Instrument: 2B Tech Model 106 Ozone Monitor (FEM)

Measurement Range: 0-100,000 ppb (0-100 ppm)

Accuracy: Greater of 1.5 ppb or 2% of Reading

Response Time: < 20 s

Carbon Dioxide (CO2)

Sensor: Telaire T6713 (NDIR)

Measurement Range: 0-5000 ppm

Accuracy: 400-5000 ppm: ± 30 ppm, or ± 3% of reading

Response Time: < 3 min for 90% step change

Particulate Matter (PM1, PM2.5)

Sensor: Plantower PMS7003 (Laser Scattering)

Particle Size Range: 0.3-10 μm

Mass Concentration Range: 0-999 μg/m3

Count Accuracy: 50% @ > 0.3 μm, 98% @ ≥ 0.5μm
Response Time: < 10 s

Carbon Monoxide (CO)

Sensor: Alphasense CO-A4 (Electrochemical)

Response Time: < 30 s for a 10-ppm step change

Precision: contact 2B Tech for information

Measurement Range: 0-500 ppm


Sensor: Bosch BME680

Measurement Range: 300 to 1100 hPa

Accuracy: ±1.0 hPa

Resolution: 0.18 Pa

Long-Term Stability: ±1.0 hPa per year


Sensor: Honeywell HIH8120 (Platinum RTD)

Measurement Range: 0-65 °C

Accuracy: ±0.5 °C from 5 °C to 50 °C

Relative Humidity

Sensor: Honeywell HIH81200 (Capacitive)

Measurement Range: 0 to 100 %RH

Accuracy: ±2% RH

Industrial Technical Services from Mississauga, Ontario is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels.

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