NOx module for environmental monitoring

Plug & Play Light Solution for NOx measurement

Monitoring Environmental Pollution with the Heraeus NOx Module
High accuracy in measurement of several components simultaneous and in real-time

Common methods for measuring NOx include sensor technologies based on chemiluminescence and electrochemical techniques. The electrochemical technique can not measure NO and NO2 at one time. Chemiluminescencs requires conversion of NO2 to NO for measurement of the NO2 content based on an assumed NO:NO2 ratio. In addition, measurements can be affected by the content of H2O and CO2.

Direct measurement of both NO and NO2 is the more precise way to measure Total NOx for Continuous Emissions Monitoring and measurement in the UV-region avoids the influence of H2O and CO2. System development based on UV Resonance Absorption Spectroscopy (UV-RAS) has been difficult in the past due to challenges in tuning the UV-lamp operation with its environment.

Pre-tuned NOx UV-Light Source from Heraeus

Now the Heraeus NOx Module overcomes this problem by offering a pre-tuned UV-light source in a stable environment, for easy integration as a Plug & Play Module into OEM UV-RAS systems. The Heraeus NOx Module has an integrated Electrodeless Discharge Lamp (EDL) and comes with the corresponding power supply combined in a compact box.

Your advantages

  • High quality measurement – no crossover of H2O, CO and CO2 and good sensitivity because of NOx-specific emission lines
  • Reduced design-in costs – complete Plug & Play module for a simple integration in your system
  • Pre-tuned settings – Optimized settings for a long lifetime and performance
  • Less operating costs – No consumables per measurement and easy replacement of the module

Application areas

Sources of NOx are predominantly man-made: burning fossil fuels for energy generation, such as coal-,oil- and gas-fired power stations, refuse incineration, some chemical processes and vehicle fuels, like modern diesel cars, used for land, water and air transportation. Nox measurement is used for:

  • Environmental monitoring
  • Smoke stack monitoring
  • Emission control testing
  • Marine exhaust monitoring
  • Air quality monitoring
NOx Module N01
Ident. No. 80143476
Spectral distribution 200 - 800 nm
Window material fused quartz
Lifetime > 8.000h
Light Output (irradiance 200-400 nm) 0.1 mW/cm² (typical)
Light Output Drift < 1 * 10-3/h (typical)
UV risk group 2
Light Output (diameter) 8 mm
Size (L x W x H) 105 x 80 x 57 mm
Power supply Voltage 12 ± 0,05 V
Power consumption (operation) 2 W
Power consumption (ignition) 4 W
Lamp ingnition automatically
Ignition time < 5 min
Weight 550 g
Operating temperature 0 - 60°C
Relative Humidity < 90%, non-condensing
Cooling not required
Electrical connector RS Components #490-844
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