Detection of SF6 gas using Thermography

SF6 gas detection is important in Circuit Breakers, Gas Insulated Switchgear and other equipment.  SF6 gas leakages can be expensive, can cause equipment tripping.  In addition, they can also result in damage to the environment as SF6 is a green house gas. 

SF6 gas is usually detected by hand held detectors which work on the ultrasonic principle.  These detectors are vulnerable to interference from noise and wind.  Another technique which has gained popularity in recent years is the use of thermographic cameras for SF6 detection.  These cameras detect the leakage of a gas by sensing the difference in temperature between the gas and the surrounding atmosphere.  This technique can be used to detect SF6 leakages from large distances. 

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