The sensor element is installed in the tip of the sensor tube and is protected from dirt by means of a stainless steel ? lter which is perme- able to air. The measuring probe consists of the sensor, the sensor tube and the ? lter. Because the com- ponents are made from stainless steel, the measuring probe is robust and can be used in demanding in- dustrial applications up to 180°C. The sensor, which is also known as a hygrometer, is eq

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