Abstract: A method for determining one or more optimized values of an operational parameter of a sensor system configured to measure a property of a substrate is disclosed. The method includes: determining a quality parameter for a plurality of substrates; determining measurement parameter values for the plurality of substrates using the sensor system for a plurality of values of the operational parameter; comparing a substrate to substrate variation of the quality parameter and a substrate to substrate variation of a mapping of the measurement parameter values; and determining the one or more optimized values of the operational parameter based on the comparing.

Abstract: The invention relates to a drying device and method for drying a pumpable mixture. Such a mixture is for instance a manure or industrial effluent. The drying device according to the invention comprises: a supply holder for holding the mixture; a drivable endless carrier extending with an outer end into the supply holder during use, wherein drying medium flows during use through or along the mixture carried along by the carrier; and heating means for heating the ingoing mixture and/or the mixture in the supply holder.