Name: Miniature Solution for Real-time Continuous SO₂ Monitoring
SKU: 2402
Price: 1.00 USD
Availability: InStock

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Miniature Solution for Real-time Continuous SO₂ Monitoring

Cairsens® SO₂

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.

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

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Product Description
Main Applications
Technical Specifications
Certifications And Downloads

SO₂ 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 is required during the Cairsens^®’s lifetime
No need for re-calibration during 12 months
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 modeling
Health and safety: mines, industrial sites, construction
Forecasting of industrial fence line emission

Measured parameter	SO₂
Article code	A40-0407
Measuring Range (ppm)	0 – 1
Certified* Detection Limit (ppm)	0.02
Resolution (ppm)	0.001
Operating Temperature (°C)	-20 to +50
Operating Relative Humidity (% HR)	10 to 90 (non-condensing)
Sensor Type	Electrochemical

Metrological performances according to the European Directive 2008/50/EC are guaranteed for 12 months

Storage Conditions

Temperature (°C)	+5 to +20
Relative Humidity (% HR)	> 15 (non-condensing)
Duration of Storage (Max)	3 months

Technical Data

Sampling method	Dynamic air sampling, with a controlled micro-fan
Power supply	5VDC / 500mA, USB port of a PC or Power bank type «Always on» (not provided)
Power consumption	20 mA max under 5 VDC
I/O communications	USB, UART, Modbus RTU-TTL. Modbus RS445 on request (article code A40-0219)
Lifetime duration	24 months
LCD Display	Concentration in ppb or ppm, operating status, memory available
Control & data treatment	Internal microprocessor for data acquisition and treatment, embedded timer
Data Storage (internal)	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) – e-SAM DAHS system or Customized integration – Cairnet^® Mini-stations with data exported in the Caircloud^®
Weight	55 g

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