We are pleased to share our latest research article, “Sensing of molecular Hydrogen using direct Tunable Diode Laser Absorption Spectroscopy ” published in Optics Express. 

 
In this study, we present precise laboratory measurements of molecular hydrogen with TDLAS, showing high sensitivity and excellent linearity over a wide concentration range. By using a multipass cell with an optical path length of 11.4 meters, we achieved a minimum detectable concentration of 1.2 ppmv at an averaging time of 100 seconds, highlighting the capabilities of this approach. 

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Combustion is one of the most important industrial processes providing heat and power for operation.

Gas analysers based on tunable diode laser absorption spectroscopy (TDLAS) are ideal for highly selective and sensitive real-time and in-situ combustion monitoring, resulting in optimised fuel consumption and thus lower costs while minimising pollutant generation. TDLAS is now considered a proven technology and is used in many industrial plants around the globe.

In our latest Hydrocarbon Engineering article, we outline how an evolution in our TDLAS signal processing is enabling new applications for the next generation of smart combustion analyzers. Read more about how our customers benefit from our innovations through the use of LaserGas™ III Ultra.

Recent advances in TDLAS, and especially the way a spectrum is analysed, has opened new opportunities and added functionality to combustion analysers.

This article will discuss a new signal processing approach that helps extract more information than before from the acquired spectrum. The approach has been designed to help create a new path forward for smart combustion analysers and enables an evolution of simple combustion analysis towards a combined process optimisation and safety instrument.

Reprinted from December 2019

HYDROCARBON ENGINEERING

“Oil and Gas Innovation sits down with Dr. Peter Geiser, Chief Technology Officer at NEO Monitors AS, to discuss among other things, their Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology.

What NEO Monitors does is help companies with gas sensing, but because they are using lasers, or what they like to call “contactless” technology, it has a wider range of applications and lower costs associated with it. We also learn about their new product, the LaserGas™ II SP H2. We dig deeper into these fascinating topics with Dr. Geiser.”

Reprinted from Oil & Gas Innovation, 2019

“Dr Peter Geiser and Dr Viacheslav Avetisov, NEO Monitors, discuss the advantages of using TDLAS analysers for tail gas analysis in sulfur recovery units.”

Reprinted from HYDROCARBON ENGINEERING, October 2018

Gas concentration measurements for process control, emissions monitoring and safety purposes are ubiquitous in refineries. The instrumentation is dominated by gas chromatographs, but over the past few years another technology has slowly found its way into many refineries: gas analysers based on tunable diode laser absorption spectroscopy (TDLAS).

This article is the first of a series of application studies for TDLAS analysers in refineries, which provides a short introduction to the underlying technology and a brief overview of refinery-related applications.
In the October 2018 issue of Hydrocarbon Engineering, the first of several application examples will be discussed in detail: the usage of TDLAS analysers for in-situ tail gas analysis in sulfur recovery units (SRUs).

Reprinted from HYDROCARBON ENGINEERING, May 2018

Tunable diode laser absorption spectroscopy (TDLAS) has been well accepted as a preferred measurement technique for many industrial applications in recent years, especially for in situ applications. Previously, mainly near-infrared lasers have been used in TLAS sensors. The advent of compact mid-infrared light sources, like quantum cascade lasers and interband cascade lasers, has made it possible to detect gases with better sensitivity by utilizing fundamental absorption bands and to measure species that do not have any absorption lines in the near-infrared spectral region. This technological advancement has allowed developing new sensors for gases, such as nitric oxide and sulfur dioxide, for industrial applications. Detection limits of better than 1 ppm·m for nitric oxide and better than 10 ppm·m for sulfur dioxide are demonstrated in field experiments. 

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