ManDust - Determination and Selection of the output characteristics of the dust mixing tower with isokinetic sampling probe

Abstract

In this study, we have designed and built output criteria for the dust mass concentration standard system (ManDust) based on the Isokinetic sampling principle. ManDust is highly adaptable and accommodates devices with flows up to 40 L/min. ManDust allows the generation of PM in the mass concentration range from 0 µg/m³ to about 2000 µg/m³ with a heterogeneous distribution of 4.38 % over the entire sampling area. In addition, the study also evaluated the repeatability of two PM measuring devices (TEOM 1405-D from Thermo Scientific, USA and Airborne 3900 from Kanomax, Japan) and the weight reference method (using Leckel LVS3). The test shows that the repeatability of the measured objects is small, the repeatability obtained by the experimental standard deviation is close to the repeatability of the reference measuring device.