The invention relates to a device for determining the operational status of an
extruder that is used for the productive of a plastic profile. At least one measuring
device for determining the quality of the melt is provided in an adapter part between
an extrusion cylinder (3) and an extrusion nozzle (5). An especially
exact determination of the extruder state is possible if the measuring device comprises
a tube through which melt is continuously drawn off from the adapter part during
the measurement and on which at least one pressure is disposed.
