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NDIR Gas Sensor Modules

smartGAS gas sensors use infra-red absorption of gases (NDIR technology) and thus are accurate, reliable and cost-efficient. They are suitable for an extremely wide variety of applications in process measuring technology and ambient air monitoring. As a solutions provider for gas sensor technology, smartGAS can offer custom solutions.  Gases include:

CO & CO2
Acetone, n-butane, ethane, methane & propane
Refrigerant gases
NOX and other pollutant gases

These NDIR gas sensors work without moving parts or chemical reactants. This minimizes the maintenance work and thus the operating and servicing costs compared with other gas sensor technology. These gas sensors are environmentally friendly, long-lasting and reliable.  You too can benefit from smartGAS' expertise!

New from smartGAS:


The functional principle of smartGAS sensors & modules

The IR principle uses the individual absorption spectrum of the gas being measured. The exact gas concentration is determined through precise quantitative analysis of this spectrum. Because of this, their gas sensors function very selectively and are virtually unaffected by other environmental factors or gases.

The functional principle of our gas sensors: long-term stability and performance thanks to NDIR technology from smartGAS

As all measured gases absorb in varying spectral ranges, a kind of "fingerprint" arises that allows very selective characterization without cross-sensitivities. Gas sensors from smartGAS possess an integrated electronic evaluation system that displays a simple to use concentration signal to you as the user and reliably compensates for all drift and temperature influences.


Gas sensors for the process measuring technology

The precise and selective gas sensors from smartGAS are distinguished by simple handling and cost efficiency – even in demanding applications. Knowledge of the internal flows and current state of a process is essential for the control and cost-efficient operation of plants. If measurements are lost, or if they cannot be used, this can lead to high costs. We possess this knowledge and incorporate it in your application as a solution. Our optimized optical components, in combination with the adapted software, ensure high long-term stability and performance – for your application too. In contrast to chemically-based gas sensors, their products are not only lower-maintenance and longer lasting, but also detect even chemically inactive gases quickly and reliably.



Gas sensors for ambient air monitoring

The monitoring of gas concentrations in the ambient air requires especially long-term stable and reliable gas sensors. The measurements are usually carried out 24/7 – 365 days in the year. Reliability and insensitivity to external influences therefore make gas sensors from smartGAS the first choice for your measuring task.

Precalibrated, Compact NDIR Gas Sensor Modules

Product Gases  Sensitivity /Range Size
Long Path Modules Many* High 156 x 30 x 37 mm
F3-032205 C2HEthylene 20ppm / 2000ppm
F3-042505 CHMethane 50ppm / 5000ppm
F3-222108 CO  Carbon Monoxide 0.2% / 100%
F3-222205 CO  Carbon Monoxide 20ppm / 2000ppm
F3-212205-05000 CO2 Carbon Dioxide 8ppm / 2000ppm
F3-600503 SF6 0.5ppm / 50ppm
Short Path Modules Many* Medium 76 x 30 x 37 mm
F3-222207 CO  Carbon Monoxide 0.07% / 20%
F3-212506-05000 CO2 Carbon Dioxide 0.03% / 5%
F3-212207-05000 CO2 Carbon Dioxide 0.07% / 20%
F3-600105 SF6 8ppm / 1000ppm
F3-600108 SF6 0.3% / 100%
Diffusion Modules Many* Low 70 x 60 x 37 mm
B1-040446 CHMethane 1% / 4.4%
B3-212207-03000 CO2 Carbon Dioxide 0.01% / 20%
F3-600108 SF6 3% / 100%
SILAREX Module      
Silarex Multi Channel MultiGas* High 233 x 31 x 37 mm
SAE Module      
SAE Module MultiGas*
Temp Controlled

*Gases include acetone, n-butane, CO, CO2, ethane, methane, propane, refrigerant gases & NOX and other pollutant gases

Application Notes: NDIR Module Options:
Emissions Monitoring
SF6 Monitoring
Refrigerant Gas Monitoring
Quality Micro Pumps for NDIR Gas Sensor Modules