@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . rdf:type skos:Concept ; dce:identifier "SDN:L22::TOOL0423" ; dc:date "2011-09-06 17:41:15.0" ; dc:identifier "SDN:L22::TOOL0423" ; dc:isVersionOf ; pav:authoredOn "2011-09-06 17:41:15.0" ; pav:version "1" ; void:inDataset ; owl:deprecated "false" ; owl:versionInfo "1" ; skos:altLabel "TSI 3936 SMPS" ; skos:broader , ; skos:definition "A differential mobility analyser that measures the size distribution and concentration of aerosol particles. It includes a cylindrical detection chamber with a variable-voltage collection rod running centrally along its length. The aerosol sample is introduced to the axial laminar flow of the chamber, where particles are deflected toward the collection rod by its electric field. Only particles within a narrow range of sizes, and thus a narrow range of mobilities, have the necessary trajectory to exit to the particle counter. The instrument is programmed to scan through a range of voltages, thereby varying the size of particles to be counted. The SMPS can scan through its full diameter range, 0.0025 um - 1 um, in 16 seconds. The scanning period can be increased to improve resolution at low concentrations. At its highest resolution, the SMPS can distinguish particle counts in 167 size bins."@en ; skos:notation "SDN:L22::TOOL0423" ; skos:note "accepted"@en ; skos:prefLabel "TSI 3936 Scanning Mobility Particle Sizer"@en ; skos:related .