Hwy @potyka_csaba!
You can do that in local Paraview by hiding the block. First use extract block filter to extract the volumes only. Then just right click on the block in viewer and then click hide block.
You can either do this in advanced solvers. Before you run the simulation, you can define the calculation item in Result Control. There you can plot the results based on volumes, faces, edges and points. If you want to do this using local Paraview, please follow this forum post: How to get nodal solution results? - #2 by ggiraldo
Following this forum the selection procedure of nodes will be same. Only difference would be that after selection you can apply Extract selection filter, then apply Plot selection over time filter. This will plot all the solution field data for those nodes. Then you can save the data while outputting it under files.