Device for monitoring the lubrication state of a rotating belt loaded with a lubricant

The invention relates to a device and a method for monitoring the lubrication state of a circulating belt (4) loaded with a lubricant for the transport of pressed material. In addition， the invention relates to a continuous press with such a monitoring device and a corresponding method for monitoring and a method for operating a press. One or more sensors are provided in the area of ????the belt with which at least one measurement signal (M) dependent on the amount of lubricant on the belt (4) can be generated. According to the invention， the sensors (9) are designed as capacitive sensors， each of which has at least one sensor plate (10) arranged at a distance from the belt (4)， each of which forms a capacitor (11) with the belt (4)， the capacitance of which depends on the amount of lubricant arranged on the belt (4).