Miniature solution for real-time continuous PM1, PM2.5 & PM10 monitoring

PM Cairsens® PM1, PM2.5 & PM10

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

The Cairsens® allows a year of continuous maintenance-free operation, even in highly polluted and humid atmospheres.
Thanks to its robust and miniature design, it is fully compatible with ENVEA’s turnkey AQMS station Cairnet®.
It can also be easily embedded into a specific integration process.

PM1, PM2.5 & PM10 micro-sensor
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  • PM10, PM2.5 & PM1 real-time monitoring in the range 0 to 1 000 µg/m3
  • Heated air flow over 60% of relative humidity
  • High-performance solution for OEM integration or stand-alone measurement
  • Calibration guaranteed for 1 year an no maintenance (1 year lifetime)
  • Ultra-small, with low power consumption
  • Cost-effective solution for high performances
  • Ready to use and easy to integrate
  • Compliant with European directive 2008/50EC for indicative measurements
PM Cairsens® are manufactured and calibrated in France. Each sensor is delivered with a calibration certificate.
  • 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

Application examples:

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

(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

Storage conditions
Temperature (°C) -20 to 70
Relative Humidity (% HR) 0 to 95 (no-condensing)
Pressure (mbar) 500 to 1500
System specifications
Lifetime 1 year of continuous operation (10 000 h)
Power supply 5V DC / 500 mA, USB port of a PC or Power bank (not provided)
Power Consumption 250 mA max under 5V DC
Gas sampling method Controlled airflow with fan, flow rate 2.5 L/min
I/O login & communications UART, Modbus using micro-USB port.
LCD Display Concentration in µg/m3, sensor lifetime remaining, operating status, memory available …
Control & data treatment board Internal microprocessor for data acquisition and treatment, embedded timer.
Data Storage 2 days for 1 min data, 30 days for 15 min data or 120 days for 60 min data
Download data mode – Customized integration / DAHS
Cairnet® mini station (data export on Caircloud®) (option)
Weight 370 g

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

Compliance to environmental regulations
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

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