Plug & Play Light Solution for NOx measurement

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. The Nox-Module is designed for direct illumination of the measurement cell, so there is no additional optical connection needed.

• 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