Particle sensor for the detection of particles or aerosol in a flowing fluid using the principle of laser-induced incandescence

摘要

A particle sensor (16) is used to detect particles (12) or aerosol in a flowing fluid using the principle of laser-induced incandescence. It comprises a laser (18) and a first detector (26) set up for the detection of temperature radiation (14). It is proposed that the particle sensor (16) have at least one optical element (20) arranged in the beam path of the laser (18), which is arranged and set up to emit laser light (10) emanating from the laser (18) into a spot (22 ), and that the first detector (26) is set up and arranged such that it detects temperature radiation (14) emanating from the spot (22), and that the particle sensor (16) has a second detector (28) set up for this purpose and is arranged to detect backscattered laser light (34).