New sensor paves to low-cost sensitive methane measurements

A research team from Princeton University created a new sensor that could be an important asset to the oil and gas industry. The research team demonstrates their new sensor, which is detecting methane concentrations. This sensor uses cascade light emitting device, where wavelengths can measure chemicals. With this sensor, the research team is hoping that this would lead to more accurate methane measurements. We can have a better understanding of how methane emissions work from livestock and from dairy farms. We can also get a better understanding of climate change with this sensor. Methane sensing has been used with mid-IR LEDs but the performance of it was limited because of low light intensities. When the research team used ICLED (which was by far more powerful), the performance for methane sensing was improved. To see how the sensor works, the sensor measures infrared light through pure air, and then measure it through a methane contained room. The researchers tested out the new sensor by comparing methane concentrations in a hallow core fiber, and infrared transmissions in a sample that contained air with laser based sensors. The ICLED was able to detect the methane concentrations as low as 0.1 parts from a million, and showed very clear results. The research team is now thinking of ways to improve this new sensor. They want to make sure it helps figure out how to increase the steadiness of methane, and how we can have a better understanding of changes in weather, climate, and temperature (climate change).

https://www.sciencedaily.com/releases/2021/02/210223110441.htm

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