Apparatus analyzing gas content of transformer-, lubricating-, engine and hydraulic oils or aqueous solutions, comprises mercury-free vacuum pump for degasification

摘要

The suction side of a mercury-free vacuum pump (6) is connected to a de-gasification vessel (1) for the dosed sample. Its pressure side is connected to an expansion vessel (7) for gas collection. This (7) is subsequently connected through one or more valves to the vacuum side of the pump, to extract gas from it. The expansion vessel has a variable volume and a gas extraction facility. A gas sample dosing valve is connected to the expansion system, for a gas analysis unit. Volume increase in the expansion vessel is registered by a bellows, or by a piston-operated gas burette. A pressure sensor (2) registers the vacuum. A valve (3) allows the gas quantity released to be measured with the pressure sensor. An Independent claim is included for the method of use.