Abstract: An oil quality sensor to determine the quality of deep-frying oil by measuring the capacitance of the deep-frying oil in a deep fryer includes a housing and a hollow space in the housing through which the deep-frying oil is guided. An inlet opening introduces deep-frying oil to the hollow space, and a drain opening guides the deep-frying oil out of the hollow space. A first bent electrode extends along the hollow space, and a second bent electrode extends along the hollow space and is arranged opposite the first electrode, in which case the two electrodes form a capacitor and deep-frying oil is guided through the space formed between these two electrodes to measure its capacitance. A first temperature sensor measures the temperature of the oil used for deep frying that needs to be measured.

Abstract: The invention refers to an oil quality sensor to determine the quality of deep-frying oil by measuring the capacitance of the deep-frying oil in a deep fryer: with a housing (2) and a hollow space (13) in the housing (2), through which the deep-frying oil can be guided, with an inlet opening (6) to introduce deep-frying oil to the hollow space (13), with a drain opening (11) to guide the deep-frying oil out of the hollow space (13), with a first bent electrode (15) that extends along the hollow space (13), with a second bent electrode (20) that extends along the hollow space (13) and is arranged opposite the first electrode (15), in which case the two electrodes (15, 20) form a condenser (25) and deep-frying oil can be guided through the space (26) formed by these two electrodes (15, 20) to measure its capacitance, with a first temperature sensor (35) to measure the temperature of the oil used for deep frying that needs to be measured, and with an evaluation unit (50) to record the measured capacitance of

Abstract: The present invention relates to a locker system for temporarily receiving valuables comprising a housing and at least one lockable access opening or at least one locker. The locker system can be arranged on a vehicle and can be transferred from a transport position into an operating position. According to a further embodiment of the invention, the locker system comprises wheels or rolls which are configured in such a manner that in a transport position they allow transport of the locker system (10) and in an operating position they prevent unauthorized transport of the locker system (10). The invention moreover relates to a vehicle comprising one or more locker systems of this kind.