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Emissions analysis for the highest demands

The increasing sense of environmental awareness around the globe is demanding higher standards for environmental monitoring.

Emissions analysis for the highest demands

NOx electrodeless discharge lamp

Heraeus Noblelight has developed an easy to use, plug & play light solution based on NOx light technology, for very accurate measurement of NOx and other pollution gases.

Environmental monitoring is used to describe the various processes, tests and investigations that are carried out in order to monitor the state of the environment and its changes, to understand and protect it. One of the major monitoring areas is air quality monitoring, which requires highly accurate measuring instruments. Heraeus Noblelight“s new light solution is developed for high accuracy, fast and real-time NOx measurement, together with very low operating costs.

The Heraeus plug & play light solution
NOx instrument development based on UV Resonance Absorption Spectroscopy (UV-RAS) has been difficult in the past, due to challenges in tuning the UV-lamp operation within its environment to optimize lifetime and intensity.

The NOx electrodeless discharge lamp (EDL) is a lamp with N2, O2 gas fill that emits a spectrum in the wavelength range between 200 nm to 600 nm. NOx-specific spectral lines in the 200 nm region can be used for the detection of NO and NO2, H2S, NH3, SO2 and other pollution gases.
Heraeus Noblelight“s new plug & play light solution for reliable NOx measurement is a lamp module that offers a pre-tuned UV-light source in a stable environment to ensure optimized performance. The NOx lamp module has an integrated EDL and comes with the corresponding power supply combined in a box. This makes integration into an OEM UV-RAS system very easy and cost efficient, plus light source replacement at End Of Life is by simply replacing the module in the field.

Fast and very accurate
High accuracy and stability are required in any measurement process. The new NOx module delivers both and even more. It is easy and effective in use, and without the need for consumables, it ensures very low operating costs. Enabling fast and accurate absorption measurements without cross-interference from water and CO2 , it saves time during the measurement process and makes dynamic (real time) measurements possible with high measurement confidence – a real competitive advantage for UV-RAS compared to other technologies.

Different methods to measure NOx
NOx is a generic term for the nitrogen oxides NO and NO2. It reacts in our atmosphere to form a wide variety of toxic products, as well as supporting the formation of ground-level (tropospheric) ozone.
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.

Common methods for measuring NOx include sensor technologies based on chemiluminescence and electrochemical techniques.
This requires conversion of NO2 to NO for measurement or calculation of the NO2 content based on an assumed NO:NO2 ratio. In addition, NOx can be measured with infrared radiation, which can be affected by the content of H2O and CO2 in the sample. Direct UV absorption 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.

Heraeus, the technology group headquartered in Hanau, Germany, is a leading international family-owned company formed in 1851. With expertise, a focus on innovations, operational excellence and an entrepreneurial leadership, we strive to continuously improve the businesses of our customers around the world.
We create high-quality solutions for our customers and strengthen their long-term competitiveness by combining material expertise with technological know-how. Our ideas are focused on important issues such as the environment, energy, health, mobility and industrial applications. Our portfolio ranges from components to coordinated material systems which are used in a wide variety of industries, including the steel, electronics, chemical, automotive and telecommunications industries.
In the 2016 financial year, Heraeus generated revenues without precious metals of EUR2.0 bn and a total revenue of EUR21.5 bn. With approximately 12,400 employees worldwide in more than 100 subsidiaries in 38 countries, Heraeus holds a leading position in its global markets.
In 2016, the Foundation for Family Businesses named Heraeus as one of the „Top 10 Family Businesses“ in Germany.
Heraeus Noblelight GmbH with its headquarters in Hanau and with subsidiaries in the USA, Great Britain, France and China is one of the technology- and market-leaders in the production of specialty light sources and systems. In 2016, Heraeus Noblelight employed 707 people worldwide. The organization develops, manufactures and markets infrared and ultraviolet emitters, systems and solutions for applications in industrial manufacture, environmental protection, medicine and cosmetics, research, development and analytical measurement techniques.

Contact
Heraeus Noblelight GmbH
Juliane Henze
Heraeusstraße 12-14
63450 Hanau
Phone: +49 (6181) 35-8539
E-Mail: juliane.henze@heraeus.com
Url: https://www.heraeus.com/en/hng/products_and_solutions/lamps_for_optics_and_analytics/nox_measurement.aspx