A moisture sensor for a forage harvester is described, where the moisture sensor includes a measuring device, a processing unit and an output. The measuring device is configured to measure an electrical characteristic of the harvested crop and generate a sensor signal representative of the electrical characteristic. The processing unit is configured to receive the sensor signal from the measuring device and process the sensor signal to derive therefrom a moisture level of the harvested crop. The output is connected to the processor to provide an output signal representative of the moisture content derived by the processor. The measurement device is further configured to operate in one of several different methods in measuring the electrical characteristic, each method having a different humidity sensitivity characteristic, and to receive an operating parameter and select a method from the plurality of methods for the measurement device, at based on the operating parameter.
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