CAPS Nitrogen Dioxide Analyzer NO2


Gas monitor for fast, precise, direct and continuous measurement of NO2 concentrations in the range 0-1000 ppb

Visible (450 nm) absorption measurement using patented Cavity Attenuated Phase Shift (CAPS) technology. QAL1 certified by the TÜV, US-EPA approved
• Fast and direct measurement of the sample – no chemical conversion required, no Toxic Gas Emissions

  • Essentially interference-free, insensitive to high fluctuations of nitric oxide, aerosols, humidity and other trace atmospheric species
  • Ideal for a wide variety of monitoring application where accuracy, precision and fast response are required
  • Extremely compact, easy to use with minimal maintenance
  • Built-in USB port, serial interface (RS 232 / RS 422) and TCP-IP connection
  • Real-time calibration graph, animated synoptic, control and maintenance data screens can be displayed while the instrument is operating
  • Cost-saving analyzer with ultra low power consumption, 24 V supply (option) and able to withstand temperatures up to 45-50 °C without air conditioning
  • Includes embedded Communication Protocol for XR® Management with automatic recognition & configuration
  • SmartStatusLightTM power button on the front panel indicating status of operation (ON/OFF, Alarm, Maintenance required…)
  • Continuous indoor and outdoor air quality monitoring
  • Stationary and mobile AQMS laboratories
  • Industrial fence-line monitoring
  • Background urban or rural, Traffic, Kerbside measurement campaigns and monitoring studies
  • Roadside air pollution and street canyon effect
  • Tunnel Monitoring, Traffic stations…
Technical specifications
Measured parameter NO₂
Technology CAPS (Cavity Attenuated Phase Shift Spectroscopy)
US-EPA Approval / QAL 1 Certification YES
Measurement ranges 0-1 ppm
Measurement units ppb, ppm, µg/m3 (user-selectable)
Lower Detectable Limit (2σ) 0.1 ppb
Noise (σ) 0.05 ppb
Zero drift 0.75 ppb/24h
Span drift 1.5 ppb/12h
Linearity < 4%
Sample flow rate 1L/min
Sampling pump Internal
Temperature range +10°C to 35°C
Data storage 1 year
Included I/O 1 LAN / 1 USB / WIFI / 1 RS4i board
Weight (Kg) 12.5
Dimensions mm (LxWxH) 483 x 606 x 133
Chassis 19″ Rack, 3U
Power supply ‘100~250Vac, 50/60Hz + ground

  • TFT color touch screen (800 x 480 , 7″)

  • 2008/50/EC, EN14211:2012, EN15267-1:2009
  • EN15267-2:2009, 40 CFR PART 53 & 40 CFR PART 58
  • QAL 1 certified by the TÜV to N° 0000038507
  • U.S. EPA approved as compliant with EQNA-1013-210

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