For a device contains representative of particles in the ambient air, in particular for the study of the atmospheric pollution

摘要

The invention relates to an on-board device for representative sampling of particles, comprising a sampling member, a continuous pumping means, and control means for starting or stopping the sampling or analysis of particles. In accordance with the invention, a solenoid valve 4 is provided upstream of the sampling member 1, and an anemometric member 5 makes it possible to compare the speed of the external air in the direction of displacement with the suction speed, and to open the solenoid valve 4 only when the isokinetic nature of the sampling process is ensured. Application in particular to studying atmospheric pollution, on board ground vehicles or aircraft, in particular for critical zones such as plumes of smoke from fuelled power stations. IMAGE