Sensors are devices that measure physical properties such as methane concentration, temperature, or radiance. For measuring flare efficiency the sensor must be capable of measuring methane and in some cases other combustion products. The sensor has to be manouvered in to a location where it intersects with the flare plume – either through the use of drone technology or aircraft. Where only methane is being measured, additional data on flare volumes is required to derive combusiton effificiency estimates.

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