CORROSION SENSOR

摘要

The invention relates to a sensor system used for the sensory online detection of the corrosive action of the oil during the service life thereof in the oil circuit of a machine. One of the oil replacement criteria for machines using large quantities of oil (i.e. the machine has an oil filling that can be replaced during maintenance) is the acidification (or corrosiveness) of the oil. For internal combustion engines operating with biofuel, this is often the main criterion for carrying out an oil change. The inventive sensor system uses at least two flat elements (2 to 6) consisting of electroconductive materials which can be structured in a plane manner and/or in the cross-section. At least one of said flat elements is used as a corrosion sacrificial element (2) for detecting the corrosion. Said flat elements are switched or connected to the electronic evaluation system (or to each other) in an electrical measuring circuit. The corrosive material loss is measured by the change in the electrical characteristics of the flat elements (e.g. electrical resistance or capacitance) used as corrosion sacrificial elements , preferably detected in a plane manner.