Miniature solution for real-time continuous NH₃ monitoring

Cairsens® NH₃

The Cairsens© sensor allows specific pollutant measurement comparable to reference methods. The high quality sensors are renowned worldwide by our customers looking for the newest technologies in air quality monitoring.

They offer precise and reliable measurement, and are calibrated using a reference-standard value.  They come with a unique calibration certificate and don’t need any more calibration after installation during their lifetime (12 months).

Excellent measurement accuracy is achieved by limiting the effect of humidity interference by using a specific and patented inlet filter combined with dynamic sampling

NH3 micro-sensor
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  • NH3 real-time monitoring
  • Very high sensitivity to capture low level gas concentrations (down to ppb)
  • Accurate measurement data at a fraction of the cost of Reference Analyzers
  • No maintenance and no need for re-calibration (1 year lifetime)
  • Embedded USB and UART / ModBus communication ports
  • Up to 20 days of 1-minute data storage capacity
  • Ultra-small, with close to zero power consumption
  • Ready to use and easy to integrate
  • Measurements meet European directive 2008/50/EC for indicators
Cairsens® are manufactured in France and calibrated in our metrological laboratory using Standard Reference AQMS monitors. Every sensor shipped includes a calibration certificate.
  • Indoor and outdoor air quality monitoring: smart cities, road-side & tunnels, schools, airports, ship terminals…
  • Odor monitoring: WWTP, recycling, pulp and paper manufacturing, sewage treatment facilities, refineries
  • Leak detection and monitoring of fugitive emissions: quarries, storage facilities, mines, manufacturing plants
  • Providing data for air dispersion modelling
  • Health and safety: mines, industrial sites, construction
  • Forecasting of industrial fence line emission

Application examples:

Technical Specifications
Measured Parameter NH3
Measuring Range (ppm) 0 – 25
Certified* Detection Limit (ppm) 0.5
Resolution (ppm) 0.001
Operating Temperature (°C) -20 to 40
Operating Relative Humidity (% HR) 10 to 90 (non-condensing)
Sensor Type Electrochemical

 

Storage conditions
Temperature (°C) +5 to +20
Relative Humidity (% HR) > 15 (non-condensing)
Duration of Storage (Max) 3 months
System specifications
Power supply 5V DC / 500 mA, USB port of a PC or Power bank (not provided)
Gas sampling method Air sampling with a controlled micro-fan
I/O login & communications USB, UART, Modbus
LCD Display Concentration in ppb or ppm, life time of the sensor, operating status, memory available, …
Control & data treatment board Internal microprocessor for data acquisition and treatment, embedded timer
Data Storage 20 days for 1 min data, 303 days for 15 min data or 1212 days for 60 min data
Download data mode Cairsoft (free download on our website), eSAM data acquisition

Cairsens® are manufactured in France and calibrated in our metrological laboratory using Standard Reference AQMS monitors. Every sensor shipped includes 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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