Vessel system for monitoring of fluid samples

The invention relates to a vessel system for the continuous monitoring of fluids, in particular industrial processes, preferably by means of NIR spectroscopy, having a vessel that is disposed in a subassembly support and has a sample chamber with an inlet opening and an outlet opening as well as a beam path directed toward a window of the sample chamber. The invention relates to a vessel system for the continuous monitoring of fluids, in particular in industrial processes, preferably by means of NIR spectroscopy, with a vessel that is disposed in a subassembly support and has an inlet opening and outlet opening as well as a beam path directed at the sample chamber. In order to facilitate maintenance, the provision is made that the subassembly support is disposed in a housing with an inlet armature and an outlet armature that pass through the housing, wherein rapidly detachable lines are provided between the inlet and outlet armature of the housing and the inlet and outlet opening of the sample chamber.