Precise gas analysis with Raman spectroscopy
The gas Raman spectrometer from Enwave Optotronics enables the qualitative and quantitative analysis of gases and gas mixtures using Raman spectroscopy. Multiple Raman-active gas components can be detected within a single measurement without requiring a separate sensor for each component.
A major advantage of Raman spectroscopy is the ability to also study homonuclear molecules such as hydrogen (H₂), nitrogen (N₂), or oxygen (O₂) spectroscopically. This makes the system particularly suitable for applications where classical IR spectroscopic methods reach their limits.
Analysis of hydrogen, deuterium and gas mixtures
The system is suitable for the analysis of various Raman-active gases and can also be used to determine the composition of gas mixtures. Applications include, for example, measurements of H₂, D₂, N₂, O₂, CO₂, as well as other suitable gases.
Particularly in research applications involving hydrogen or deuterium mixtures, Raman spectroscopy offers the advantage of selective spectroscopic identification of the individual components. The achievable detection limit and measurement uncertainty depend on the gas composition, pressure, measurement time, and the respective measurement configuration.
Advantages of Raman-based gas analysis
Raman technology enables the simultaneous detection of multiple gas components in a single spectrum. Since the measurement is optical, no chemical reagents or consumables are required. Changing gas compositions can also be analyzed with the same measuring system.
Raman spectroscopy is of particular interest for molecules that are difficult or impossible to directly access using classical IR absorption methods. It thus complements established gas measurement techniques, particularly in research, development, and demanding process applications.
High sensitivity with optional FloGasCell
For particularly sensitive measurements, the FloGasCell is available as an optional flow-through gas cell. According to the manufacturer, it improves sensitivity by a factor of approximately three. For suitable gases, Enwave specifies concentrations down to approximately 0.02 % at atmospheric pressure. The actual detectable limit depends on the specific gas, the gas composition, and the measurement conditions.
Laboratory analysis and online process monitoring
The GasRaman NOCH-1 can be used for both laboratory investigations and continuous online process monitoring. Typical applications include natural gas and biogas analysis, petrochemistry, the chemical industry, nuclear engineering, and biotechnological process analytics. The Symbion DX-GasRaman software is optionally available for integration into industrial process environments.
Consulting and application-specific configuration
The optimal configuration of a gas Raman system depends significantly on the gases to be measured, the expected concentrations, and the pressure and measurement conditions. Soliton will support you in selecting and designing the system for your specific measurement task. Please feel free to contact us with details regarding the gas composition, concentration range, and measurement conditions.
