VDI 4206 Blatt 4:2012-06

This guideline specifies performance criteria and test procedures for checking compliance with these performance criteria on portable devices for measuring the moisture content of lumpy wood according to the Ordinance on Small and Medium Firing Installations (1. BImSchV). It applies to all performance tests of measuring devices for the measurement of the moisture content of lumpy wood in form of natural finished split logs (split or non-split, sawn, planed, with or without bark) used as fuel in small firing installations. Furthermore, this guideline specifies the requirements on test institutes and explains the declaration of suitable measuring devices. This guideline is addressed to manufactures of measuring devices for monitoring emissions at small firing installations, to test institutes performing performance tests of such measuring devices, and to the authorities responsible for the declaration of suitability. Furthermore, it assists users of performance-tested measuring devices for monitoring emissions at small firing installations in the operation of these devices. Bodies for periodic testing of performance tested measuring devices may use this guideline as an additional source of information.