Übertemperatur- und Anlaufsicherung in Pumpen mit Permanentmagnet-Kupplungen

摘要

The invention relates to the measurement of temperature in a magnetic centrifugal pump having an impeller which conveys the medium and whose shaft (9) ends at a can (1) where it bears permanent magnets (10) which are driven by permanent magnets (2) which are located opposite and are connected to the shaft of the drive motor. One conductor (3) of a thermocouple (4) is fastened to the inner or outer surface of the can. The other conductor of the thermocouple is formed by the can, as a result of which the conductor circuit for the thermocouple (4) is also closed.