CIPGuard (TCG-ZR) is a sensor for monitoring a slowly rotating tank cleaning device. Jet cleaners turning 360 degrees inside containers and tanks can be monitored. The sensor is centrally mounted, preferably on the upper section of the tank and is integrated in the PLC control or evaluated via PC. The AWH CIPGuard is characterized by it robust, compact design and its reliable real-time presentation of the rotation of jet cleaners. The values measured can be further processed via the output signal of a PLC controller by the digital PNP signal (24 VDC).