VDI 4206 Blatt 3:2010-08 (R2016)

This guideline specifies performance criteria and test procedures for checking compliance with these performance criteria on portable devices for measuring the smoke number at small firing installations according to the Ordinance on Small and Medium Firing Installations (1. BImSchV) or the Order on Sweeping and Checking (KÜO). Furthermore, this guideline specifies the performance criteria on filter media and comparison scales as well as the procedures for checking compliance with these performance criteria. Section 4 and Section 5 apply to all performance tests of measuring devices for the measurement of smoke numbers, which are intended for use at these firing installations. Gas sampling can be carried out with hand or motor pumps. The evaluation of the soot spot takes place by a visual assessment or by a photometer based assessment of the absorbance of the soot spot according to DIN 51402-1. Section 6 and Section 7 apply to performance tests of filter media and comparison scales. 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.