Biogas Analyzer 

CO2 & CH4 

At Olythe, where innovation meets sustainability, we are delighted to unveil our latest development: the CO2 & CH4 Biogas Analyzer. This state-of-the-art instrument is designed for biogas plants and offers unrivalled accuracy and reliability in monitoring carbon dioxide (CO2) and methane (CH4) levels.


Why measuring CO2 and CH4 in biogas plants ?


Methane and carbon dioxide are produced during the biogas production process by a biological process known as anaerobic digestion. Anaerobic digestion is the decomposition of organic matter in the absence of oxygen, resulting in the production of biogas. 


During anaerobic digestion, microorganisms, primarily bacteria, break down organic matter into simpler compounds through a series of metabolic processes. One of the metabolic pathways involved in anaerobic digestion is the production of methane and CO2. Methane is produced when microorganisms called methanogens break down organic compounds such as acetic acid, hydrogen and carbon dioxide.


Once biogas has been produced by the anaerobic digestion of organic matter, a purification stage is required to separate the methane from other gases such as carbon dioxide, hydrogen sulphide and moisture. This purified methane can then be called biomethane, which can be used as a renewable biofuel. Biomethane can be used in a variety of applications, including vehicle fuel, heating and electricity generation.


CO2 & CH4 Biogas Analyzer

P2 - OpenP2 - Closed
Unrivalled reliability

Our biogas analyzer uses state-of-the-art non-dispersive infrared (NDIR) sensor technology to accurately measure carbon dioxide (CO2) and methane (CH4) levels in biogas plants. This proven method guarantees reliable and accurate results, ensuring effective control of biogas production.

Robust design

Designed to withstand the most demanding industrial environments, our biogas analyzer features a robust and durable construction. Its rugged, waterproof design ensures reliable operation, even in the harshest conditions.

Ease of use

Our biogas analyzer is easy to install and use, allowing your team to concentrate on the essential tasks. Its easy-to-use design offers intuitive operation and advanced features for efficient data management.

Versatile applications

Whether you operate a wastewater treatment plant, an anaerobic digestion facility or a biogas plant, our analyzer is the ideal tool for monitoring and optimising your CO2 and CH4 emissions. It provides valuable data to protect your environment, maximise efficiency and minimise unwanted emissions.

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Analyzing gases with infrared spectroscopy

A non-dispersive infrared (NDIR) sensor operates by detecting the amount of infrared light at a particular wavelength absorbed by a sample. In this process, infrared light passes through the chamber to the detector. The gas being analyzed absorbs energy at specific wavelengths, causing attenuation in the light detected by the sensor. This attenuation is precisely measured by the detector, enabling accurate determination of gas concentration.

To enhance accuracy, the detector is equipped with a bandpass optical filter that selectively eliminates wavelengths not absorbed by the target gas molecules, ensuring reliable measurements of CO2 and CH4 concentrations in biogas.