The Trafag 8864.78.2341 is a high-precision SF6 Gas Density Monitor designed for reliable monitoring of gas-insulated switchgear (GIS) in high and medium-voltage applications. Operating on the principle of reference gas comparison, it provides exceptional temperature compensation, ensuring accurate measurements regardless of ambient temperature fluctuations. This monitor features a robust, hermetically sealed design, making it suitable for harsh outdoor environments. It is equipped with multiple microswitches that trigger alarms at predefined density levels, providing critical early warnings of gas leaks to prevent dielectric failure and ensure the operational safety and longevity of the switchgear.