Real-time insight. Multi-gas clarity
Industrial processes, environmental monitoring, and emissions control increasingly demand real-time monitoring of multiple gases simultaneously. Traditional solutions like NDIR or electrochemical sensors often target one or two gases – requiring parallel systems, complex calibrations, or compromises in speed.
NLIR’s mid-infrared spectrometers can change that.
NLIR’s fast MID-IR spectrometers deliver millisecond-scale updates across a wide spectral range, enabling accurate, simultaneous detection of key gases such as CO₂, CH₄, NOₓ, H₂O, and more – even in dynamically changing or harsh environments.
IMPROVE LIVE MONITORING OF MULTIPLE GASES
Live data acquisition
400 Hz full-spectrum readout rate enables live access to data
High Resolution
High sensitivity ensures quality data even across long distances
No moving parts
Can be mounted in real production environments and give great results
Excellent Service
Get help from our experienced optical engineers
How does it work?
Gases can be detected using infrared (IR) spectroscopy by measuring light in transmission. A light source sends light through a gas-filled chamber or pipe, and a spectrometer captures how the light is absorbed by the gas.
The video demonstrates this setup in action. NLIR’s FIBER Light Source delivers light through a fiber to a simple gas cell, while another fiber guides the transmitted light to NLIR’s MIDWAVE Spectrometer. The spectrometer captures spectra every 20 milliseconds, clearly showing the transmission features on screen.
This setup can be installed in industrial environments to provide real-time data on the composition of gases inside pipes or chambers.
Perform transmission measurements of various gases effortlessly with our TRANSMISSION Measurement System
TRANSMISSION Measurement System combined with
MIDWAVE Spectrometer
Full transmission spectra in milliseconds at 400 Hz readout rate
TRANSMISSION Measurement System combined with
BUNDLE Spectrometer
Full transmission spectra in milliseconds up to 130 kHz readout rate
TRANSMISSION Measurement System combined with
FIBER Light Source
Get infrared light to your sample through a fiber
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Multi-Component Gas Spectra Analysis - A Measurement Case
The figure shows the transmission spectrum of a gas cell with a mix of 6 different gases (CO2, N2O, CO, CH4, C2H2, and N2) measured using the NLIR’s FIBER Light Source, two COLLIMATORS, two MIRFIBERs, and the MIDWAVE Spectrometer.
A single shot of 20 ms exposure time capture the data shown, and no further data processing was applied. This measurement shows that it’s possible to monitor many different gases at the same time with NLIR’s equipment and obtain live information about the gas composition. From data like this, concentration values can be derived using chemometric of machine learning techniques.
Measure the concentration of gases in industrial settings – live with MIR spectroscopy
NLIR’s mid-infrared spectroscopy makes it possible to track multiple gases in real time, directly in your process or exhaust line. Covering the 2.0 – 5.0 µm range, our systems identify CO, CO₂, hydrocarbons, and other key species with precision and speed – helping you stay compliant and optimize production.
Bring continuous gas monitoring into your operations today. Contact us to learn how NLIR’s MIR solutions can support your process control.
