CairNet Solution for Real-Time Continuous Particulate PM1, PM2.5 & PM10 Monitoring


The last generation of Cairsens® micro-sensors for Particulate Matters (PM) monitoring operates without any influence from moisture in ambient air. They measure PM1, PM2.5 and PM10 concentrations.

The Cairsens® allow for continuous maintenance-free operation during their lifetime, even in highly polluted and humid atmospheres.

Thanks to their robust and miniature design, they are fully compatible with ENVEA’s turnkey AQMS station Cairnet®. They can also be easily embedded into a specific integration process.


Ask us about this item

  • Brand
  • Features & Benefits
  • Main Application
  • Technical Specifications
  • Technical Data
  • Approvals & Certifications


Envea Ambient

Features & Benefits

  • PM10, PM2.5 & PM1 real-time monitoring in the range 0 to 1 000 μg/m3
  • Calibration guaranteed for 1 year
  • No maintenance required during their lifetime
  • Measurement not influenced by air humidity: air flow heated over 60% of HR
  • Ultra-small, with low power consumption
  • Cost-effective solution for high performances
  • Ready to use and easy to integrate
  • Compliant with European directive 2008/50 EC for indicative measurements

Main Application

  • Indoor and outdoor air quality monitoring: Smart cities, Road-side & tunnels, parkings, airports, ship terminals…
  • Filter efficiency monitoring
  • Command and control with real time PM management levels: Industries, mines, manufacturing plants, green waste treatment plants and refineries
  • Providing data for air dispersion modeling
  • Help guaranteeing health and safety: mines, industrial sites, construction sites

Technical Specifications

Measured Parameter PM1, PM2.5 & PM10
Measuring Range (3) 0 – 1 000 µg/m3
Particle size detection range ø 0.3 – 10 µm
Certified* Detection Limit (2) < 5 µg/m3
Display resolution 0.01 µg/m3
Linearity (2) R2 > 0.75
Uncertainty between sensors < 5 µg/m3
Accuracy (slope) (2) 0.7 to 1.3
Sample conditioning Controlled airflow, heated air flow over 60% relative humidity
Temperature effect < 0.01 µg/m3/°C
Technology Laser Light Scattering
Operating Relative Humidity 0 to 95 HR % (no-condensing)
Operating Atmospheric Pressure 500 to 1 500 mbar
Metrological performances according to the European Directive 2008/50/EC are
guaranteed for 12 months

(1) Laboratory operating conditions: 20°C ± 2°C / 50% RH ± 10% / 1013 mbar ± 5%
(2) According to our laboratory evaluation: daily averages measurements of PM10 and PM2.5 in comparison with a reference analyzer
(3) Arizona sand equivalent

Temperature (°C) -20 to 70
Relative Humidity (% HR) 0 to 95 (no-condensing)
Pressure (mbar) 500 to 1500

Technical Data

Sampling method Dynamic air sampling, with a controlled micro-fan
Power supply 5V DC / 500 mA, USB port of a PC or Power bank type «Always on» (not provided)
Power consumption 250 mA max under 5V DC
I/O communications USB, UART, Modbus RTU-TTL. Modbus RS445 on request (article code A40-0219)
Lifetime duration 24 months
LCD Display Concentration in µg/m3, operating status, memory available …
Control & data treatment Internal microprocessor for data acquisition and treatment, embedded timer
Data Storage (internal) 2 days for 1 min data, 30 days for 15 min data or 120 days for 60 min data
Download data mode – Cairsoft (free download)
– e-SAM DAHS system or Customized integration
– Cairnet® Mini-stations with data exported in the Caircloud®
Weight 370 g

Approvals & Certifications

PM Cairsens® are manufactured and calibrated in France. Each sensor is delivered with a calibration certificate.

Electrical safety NF EN 61010-1: 2010
Electromagnetic Compatibility NF EN 61326-1: 2013
Protection Index IP 42 (according to IEC 60529)
European directive 2008/50/EC
More From Avensys

More Services

Our certified engineers and technicians can intervene from the initial consultation and planning stages, throughout the life of instruments and systems.
Happy Professional Heavy Industry Engineer Worker Wearing Uniform, and Hard Hat in a Steel Factory. Smiling Industrial Specialist Standing in a Metal Construction Manufacture.

Field & In House

Develop customized monitoring plans that address client's unique needs...

Start up

Start up & Commissioning is a critical phase in the life cycle of any project.

Integrated Systems

The benefits include improved performance, reduced costs, and increased reliability.


We believe that product training is essential for both our employees and our clients.