Abstract: A method and a device for the extractive triboelecric measurement of dust and aerosols is provided. A partial gas stream is removed from a main stream and drawn through a triboelecric measuring chamber with a variable or constant temperature, at a variable or constant speed and with an abradant rotational movement. Sensors are arranged in the measuring chamber in such a way that they are electrically insulated. The triboelecric effect begins when the gas stream that is loaded with dust particles and aerosols passes through the triboelecric measuring chamber, preferably in a cyclonic manner, moving rotationally, abradantly on the sensors. Since gaseous components cannot be measured according to the triboelecric measuring principal, the temperature is controlled intermittently at a low temperature producing a signal which is caused by dust and aerosols, and at a higher temperature, producing a signal which is caused by dust alone.

Abstract: The invention relates to a method and a device for the extractive triboelecric measurement of dust and aerosols. A partial gas stream is removed from the main stream, optionally conditioned and drawn through the triboelectric measuring chamber (5) by suction, with a variable or constant temperature, at a variable or constant speed and with an abradant rotational movement. Sensors (16) are arranged in said measuring chamber (5) in such a way that they are electrically insulated. The triboelectric effect begins when the gas stream that is loaded with dust particles and aerosols passes through the triboelectric measuring chamber (5), preferably in a cyclonic manner, moving rotationally, abradantly on the sensors (16). The triboelectric measuring signals are derived therefrom and supplied for processing. Since gaseous components cannot be measured according to the triboelectric measuring principal, the temperature is controlled intermittently at two temperatures in the chamber.