Custom NDIR sensors to measure CH4

Methane is colourless, odourless gas that is is extremely volatile and a major fire risk. Methane monitoring is a critical health and safety issue for industries where it is a byproduct. Non-dispersive infrared (NDIR) is an effective method for measuring methane since it does not rely on the presence of oxygen. The sensor cannot easily be poisoned and it is also fail safe since any malfunction gives a high gas reading.

Methane monitoring is a series health and safety issue.

How do Methane Gas Detectors work?

There are different types of methane gas dectors, but Edinburgh Sensors specialises in Infrared (IR) Gas Sensors.

Infrared gas sensors work for methane monitoring because the gas absorbs IR light at a specific wavelength.

Within the detector, an IR light source is placed at one end and an absorbance detector at the other end, with an optical filter that will exclude all wavelengths except from where methane absorbs IR light. As air fills the chamber, methane particles begin to absorb the IR radiation. As methane concentration increases and more light is absorbed, the IR light signal at the detector decreases, setting off the sensor. You can find more information about how IR sensors are used as methane gas detectors in this article: Using an Infrared Sensor (IR Sensor) for Reliable Methane Gas Monitoring

Methane Monitoring in Industry

Natural Gas

As global concerns for climate change continue to grow, it has become evident that methane emissions are contributing to the climate emergency. Whilst methane concentrations in the atmosphere are much lower than that of carbon dioxide, methane is much more effective at trapping heat and causing the atmosphere to heat up. One way of reducing methane in the atmosphere is by installing methane gas detectors to indicate leaks in natural gas pipelines.

Methane leak detection is vital in natural gas production and supply.

Efficient methane leak detection systems can help reduce methane escaping into the environment, providing one solution for decreasing excess methane in the atmosphere.

Further reading:

Agriculture (add paragraph to page relating to CH4 in cattle farming and rice paddies)

Methane is a by-product of the agriculture industry, with cattle producing methane in gases released as result of microbes in their digestives systems. As demand for beef and dairy grows, so to does the resulting methane produced. Methane monitoring on farms is helping to understand how much methane is being produced and technology is being developed to help reduce these methane emissions.

Cattle farming requires methane gas detectors

Further reading:

Waste and Landfill

Methane is the largest component of landfill gas. Methane gas detectors are necessary on landfill sites because of the risk of explosion from a build-up of pressure from gas production.

Methane gas detectors monitor landfill gas to avoid explosions

Further Reading:


Production of biogas requires methane monitoring to ensure the safety but also to monitor the efficacy of gas production.

Methane gas detectors are required for the safety and to monitor the efficacy of biogas production.

Further reading:

4 for Methane. NDIR Gas Sensor

Gas detection using a CO2 sensor.

Gascard NG

The Gascard NG infrared gas sensor is designed for ease of integration with a wide range of gas detection systems that require high quality, accurate and reliable measurement of CO, CO2, CH4 gas concentrations.

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Gas Monitor from Edinburgh Sensors, The Guardian NG. Enquire today for more information, including Gas Monitor price.

Guardian NG Gas Monitor

Gas Monitor, The Guardian NG, supplied by Edinburgh Sensors offers near-analyser quality, continuous sampling, measurement and display of target gas concentrations.

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