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The range of measuring instruments includes Pollak counters (PCO) in use already for several decades, presently available commercial particle counters, as well as laboratory prototypes. The operation of the instruments considered was based on different measurement principles: (1) adiabatic expansion condensation particle counter, (2) flow diffusion condensation particle counter, (3) turbulent mixing condensation","publication_date":"2002,,","publication_name":"Atmospheric Research","grobid_abstract_attachment_id":"85264646"},"document_type":"paper","pre_hit_view_count_baseline":null,"quality":"high","language":"en","title":"Intercomparison of number concentration measurements by various aerosol particle counters","broadcastable":false,"draft":null,"has_indexable_attachment":true,"indexable":true,"seo_quality":null}}["work"]; window.loswp.workCoauthors = [40185549]; window.loswp.locale = "en"; window.loswp.countryCode = "SG"; window.loswp.cwvAbTestBucket = ""; window.loswp.designVariant = "ds_vanilla"; window.loswp.fullPageMobileSutdModalVariant = "control"; window.loswp.useOptimizedScribd4genScript = false; window.loginModal = {}; window.loginModal.appleClientId = 'edu.academia.applesignon'; window.userInChina = "false";</script><script defer="" src="https://accounts.google.com/gsi/client"></script><div class="ds-loswp-container"><div class="ds-work-card--grid-container"><div class="ds-work-card--container js-loswp-work-card"><div class="ds-work-card--cover"><div class="ds-work-cover--wrapper"><div class="ds-work-cover--container"><button class="ds-work-cover--clickable js-swp-download-button" data-signup-modal="{"location":"swp-splash-paper-cover","attachmentId":85264646,"attachmentType":"pdf"}"><img alt="First page of “Intercomparison of number concentration measurements by various aerosol particle counters”" class="ds-work-cover--cover-thumbnail" src="https://0.academia-photos.com/attachment_thumbnails/85264646/mini_magick20220501-6372-16fzstd.png?1651390982" /><img alt="PDF Icon" class="ds-work-cover--file-icon" src="//a.academia-assets.com/images/single_work_splash/adobe_icon.svg" /><div class="ds-work-cover--hover-container"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span><p>Download Free PDF</p></div><div class="ds-work-cover--ribbon-container">Download Free PDF</div><div class="ds-work-cover--ribbon-triangle"></div></button></div></div></div><div class="ds-work-card--work-information"><h1 class="ds-work-card--work-title">Intercomparison of number concentration measurements by various aerosol particle counters</h1><div class="ds-work-card--work-authors ds-work-card--detail"><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="40185549" href="https://independent.academia.edu/GilmoreSem"><img alt="Profile image of Gilmore Sem" class="ds-work-card--author-avatar" src="//a.academia-assets.com/images/s65_no_pic.png" />Gilmore Sem</a></div><div class="ds-work-card--detail"><p class="ds-work-card--detail ds2-5-body-sm">2002, Atmospheric Research</p><div class="ds-work-card--work-metadata"><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">visibility</span><p class="ds2-5-body-sm" id="work-metadata-view-count">…</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">description</span><p class="ds2-5-body-sm">31 pages</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">link</span><p class="ds2-5-body-sm">1 file</p></div></div><script>(async () => { const workId = 78098286; const worksViewsPath = "/v0/works/views?subdomain_param=api&work_ids%5B%5D=78098286"; const getWorkViews = async (workId) => { const response = await fetch(worksViewsPath); if (!response.ok) { throw new Error('Failed to load work views'); } const data = await response.json(); return data.views[workId]; }; // Get the view count for the work - we send this immediately rather than waiting for // the DOM to load, so it can be available as soon as possible (but without holding up // the backend or other resource requests, because it's a bit expensive and not critical). const viewCount = await getWorkViews(workId); const updateViewCount = (viewCount) => { try { const viewCountNumber = parseInt(viewCount, 10); if (viewCountNumber === 0) { // Remove the whole views element if there are zero views. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); return; } const commaizedViewCount = viewCountNumber.toLocaleString(); const viewCountBody = document.getElementById('work-metadata-view-count'); if (!viewCountBody) { throw new Error('Failed to find work views element'); } viewCountBody.textContent = `${commaizedViewCount} views`; } catch (error) { // Remove the whole views element if there was some issue parsing. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); throw new Error(`Failed to parse view count: ${viewCount}`, error); } }; // If the DOM is still loading, wait for it to be ready before updating the view count. if (document.readyState === "loading") { document.addEventListener('DOMContentLoaded', () => { updateViewCount(viewCount); }); // Otherwise, just update it immediately. } else { updateViewCount(viewCount); } })();</script></div><p class="ds-work-card--work-abstract ds-work-card--detail ds2-5-body-md">Total aerosol particle number concentrations, as measured by means of 16 different measurement systems, have been quantitatively compared during an international workshop at the Institute for Experimental Physics of the University of Vienna, Austria, which was coordinated within the Committee on Nucleation and Atmospheric Aerosols (ICCP-IUGG). The range of measuring instruments includes Pollak counters (PCO) in use already for several decades, presently available commercial particle counters, as well as laboratory prototypes. The operation of the instruments considered was based on different measurement principles: (1) adiabatic expansion condensation particle counter, (2) flow diffusion condensation particle counter, (3) turbulent mixing condensation</p><div class="ds-work-card--button-container"><div class="primary-buttons cite-share-variant"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--work-card","attachmentId":85264646,"attachmentType":"pdf","workUrl":"https://www.academia.edu/78098286/Intercomparison_of_number_concentration_measurements_by_various_aerosol_particle_counters"}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">description</span>See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--work-card","attachmentId":85264646,"attachmentType":"pdf","workUrl":"https://www.academia.edu/78098286/Intercomparison_of_number_concentration_measurements_by_various_aerosol_particle_counters"}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button><div id="js-react-on-rails-context" style="display:none" data-rails-context="{"inMailer":false,"i18nLocale":"en","i18nDefaultLocale":"en","href":"https://www.academia.edu/78098286/Intercomparison_of_number_concentration_measurements_by_various_aerosol_particle_counters","location":"/78098286/Intercomparison_of_number_concentration_measurements_by_various_aerosol_particle_counters","scheme":"https","host":"www.academia.edu","port":null,"pathname":"/78098286/Intercomparison_of_number_concentration_measurements_by_various_aerosol_particle_counters","search":null,"httpAcceptLanguage":null,"serverSide":false}"></div> <div class="js-react-on-rails-component" style="display:none" data-component-name="CitationButton" data-props="{"entity_id":78098286,"citations":[{"name":"MLA","citation":"Sem, Gilmore. “Intercomparison of Number Concentration Measurements by Various Aerosol Particle Counters.” Atmospheric Research, Elsevier BV, 2002."},{"name":"APA","citation":"Sem, G. (2002). Intercomparison of number concentration measurements by various aerosol particle counters. Atmospheric Research."},{"name":"Chicago","citation":"Sem, Gilmore. “Intercomparison of Number Concentration Measurements by Various Aerosol Particle Counters.” Atmospheric Research, 2002."},{"name":"Vancouver","citation":"Sem G. Intercomparison of number concentration measurements by various aerosol particle counters. Atmospheric Research. 2002; "},{"name":"Harvard","citation":"Sem, G. (2002) “Intercomparison of number concentration measurements by various aerosol particle counters,” Atmospheric Research. 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Colhoun</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Atmospheric Research, 2002</p><p class="ds-related-work--abstract ds2-5-body-sm">During an international workshop at the Institute for Experimental Physics of the University of Vienna, Austria, which was coordinated within the Committee on Nucleation and Atmospheric Aerosols (IAMAS-IUGG), 10 instruments for aerosol number concentration measurement were studied, covering a wide range of methods based on various different measuring principles. In order to investigate the detection limits of the instruments considered with respect to particle size, simultaneous number concentration measurements were performed for monodispersed aerosols with particle sizes ranging from 1.5 to 50 nm diameter and various compositions. The instruments considered show quite different response characteristics, apparently related to the different vapors used in the various counters to enlarge the particles to an optically detectable size. A strong dependence of the 50% cutoff diameter on the particle composition in correlation with the type of vapor used in the 0169-8095/02/$ -see front matter D 2002 Elsevier Science B.V. All rights reserved. PII: S 0 1 6 9 -8 0 9 5 ( 0 2 ) 0 0 0 11 -X $ Coordinated within the Committee on Nucleation and Atmospheric Aerosols, International Commission on Clouds and Precipitation, IAMAS-IUGG.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Particle size dependent response of aerosol counters","attachmentId":39847694,"attachmentType":"pdf","work_url":"https://www.academia.edu/18048276/Particle_size_dependent_response_of_aerosol_counters","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/18048276/Particle_size_dependent_response_of_aerosol_counters"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="1" data-entity-id="44323912" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/44323912/Intercomparison_of_different_absolute_instruments_for_measurement_of_aerosol_number_concentration">Intercomparison of different “absolute” instruments for measurement of aerosol number concentration</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="175024157" href="https://independent.academia.edu/DavidPui">David Pui</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Journal of Aerosol Science, 1982</p><p class="ds-related-work--abstract ds2-5-body-sm">During the 1979 workshop of the working group on ultrafine aerosols (WUFA) an intercomparison of different instruments for measurement of aerosol number concentrations was performed. Each of these instruments (TSl-aerosol electrometer, TSI-condensation nuclei counter, Jaenicke-condensation nuclei counter, size analyzing nuclei counter SANC) can be regarded as "absolute", because they do not depend on empirical calibration relative to external reference standards. Number concentrations were measured for monodispersed NaCl-aerosols with a mean particle diameter of 56 nm, generated by means of a collision atomizer and an electrostatic aerosol classifier. The transmission losses in the SANCohumidifier were determined quantitatively and the SANC-measurements were properly corrected. Measurements were performed over a concentration range from about 2.5 x 102 to 3.5 x 105 cm -3. Considering the differences between the various applied measuring techniques, fair agreement of the obtained concentration data was observed. The TSl-condensation nuclei counter agrees closely with the TSI-aerosol electrometer, however, it can be regarded as an "absolute" instrument only for concentrations below 103 cm-3. For low concentrations the Jaenicke-condensation nuclei counter tends to agree with the average concentration, obtained from all instruments used, above 104 cm-3 it agrees closely with the SANC. The readings of TSI-aerosol electrometer and SANC are quite linearly related over the whole concentration range, the SANC being low by a factor of about 0.59. Thus different measuring techniques, based on completely different principles, yield comparable aerosol number concentrations and accordingly condensation nuclei counters are truly aerosol counters.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Intercomparison of different “absolute” instruments for measurement of aerosol number concentration","attachmentId":64712355,"attachmentType":"pdf","work_url":"https://www.academia.edu/44323912/Intercomparison_of_different_absolute_instruments_for_measurement_of_aerosol_number_concentration","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/44323912/Intercomparison_of_different_absolute_instruments_for_measurement_of_aerosol_number_concentration"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="2" data-entity-id="18377742" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/18377742/Validation_of_the_condensation_particle_counter_UF_02M_in_laboratory_and_ambient_conditions">Validation of the condensation particle counter UF-02M in laboratory and ambient conditions</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="38374678" href="https://independent.academia.edu/KristinaPlau%C5%A1kait%C4%97">Kristina Plauškaitė</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Lithuanian Journal of Physics, 2013</p><p class="ds-related-work--abstract ds2-5-body-sm">The main performance characteristics of the modernized condensation particle counter (CPC) UF-02M were determined. We studied the particle number concentration range of the instrument and the detection efficiency as a function of the particle diameter experimentally. In order to determine a cut-size D 50 , the function was fitted to the experimental data. According to the fitting, the cut-size was 4.35 nm. The determined cut-size allows detecting the aerosol particles of the nucleation mode, giving possibilities to find many applications of the CPC UF-02M in the investigations of the aerosol nanometre particle dynamical properties. The counting efficiency of the CPC at high particle concentrations was experimentally investigated using silver particles of a 20 nm diameter. The minimum measured number concentration of aerosol particles was 0.003 cm -3 , the maximum was 150000 cm -3 with the accuracy of 20%. The operation of the CPC UF-02M was compared with the operation of a commercially available SMPS TSI3936 under ambient conditions. The measured number concentrations were comparable with 5% accuracy. During the testing time, both instruments detected a new particle formation event. It was determined that the number concentration measured with the modernized CPC was higher than that determined by the SMPS. It was explained that a new CPC had a lower cut-size and detected smaller particles than the SMPS did.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Validation of the condensation particle counter UF-02M in laboratory and ambient conditions","attachmentId":40022750,"attachmentType":"pdf","work_url":"https://www.academia.edu/18377742/Validation_of_the_condensation_particle_counter_UF_02M_in_laboratory_and_ambient_conditions","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/18377742/Validation_of_the_condensation_particle_counter_UF_02M_in_laboratory_and_ambient_conditions"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="3" data-entity-id="126115703" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/126115703/Calibration_of_a_Condensation_Particle_Counter_Using_a_NIST_Traceable_Method">Calibration of a Condensation Particle Counter Using a NIST Traceable Method</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="15380904" href="https://independent.academia.edu/RobertFletcher2">Robert Fletcher</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Aerosol Science and Technology, 2009</p><p class="ds-related-work--abstract ds2-5-body-sm">This work presents a calibration of a commercial condensation particle counter using National Institute of Standards and Technology (NIST) traceable methods. By the nature of the metrology involved, this work also compares the measurement results of three independent techniques for measuring aerosol concentration: continuous flow condensation particle counter (CPC); aerosol electrometer (AE); and the aerosol concentration derived from microscopic particle counting. Because of the transient nature of aerosol, there are no concentration artifact standards such as exist for particle diameter standards. We employ a mobility classifier to produce a nearly monodisperse, 80 nm, polystyrene latex aerosol. The test aerosol is used as a challenge for the CPC and the AE, and is subsequently filter sampled for electron microscopy. Our test stand design incorporates a continuous CPC aerosol concentration monitor to verify the aerosol stability. The CPC determines particle concentration by single particle counting at a constant sample flow rate. The AE has been calibrated to a NIST traceable current standard. The subsequent aerosol concentration measurement is obtained by determining the electrical current produced by a charged aerosol transported to the detector by a controlled aerosol flow rate. We have NIST traceability for flow rates for all methods and a methodology to calibrate the AE to NIST traceable electrical standards. The latter provides a calibration and a determination of the uncertainty in the aerosol derived current measurement. A bias in the measurements due to multiple charged particles was observed and overcome by using an electrospray aerosol generator to produce the challenge particles. This generator was able to produce aerosol concentrations over the range of 100 particles/cm 3 to 15 000 particles/cm 3 with lower number of</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Calibration of a Condensation Particle Counter Using a NIST Traceable Method","attachmentId":120042475,"attachmentType":"pdf","work_url":"https://www.academia.edu/126115703/Calibration_of_a_Condensation_Particle_Counter_Using_a_NIST_Traceable_Method","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/126115703/Calibration_of_a_Condensation_Particle_Counter_Using_a_NIST_Traceable_Method"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="4" data-entity-id="25199390" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/25199390/Measurement_of_Ultrafine_Particles_A_Comparison_of_Two_Handheld_Condensation_Particle_Counters">Measurement of Ultrafine Particles: A Comparison of Two Handheld Condensation Particle Counters</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="48514054" href="https://independent.academia.edu/LarsEkberg">Lars Ekberg</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Aerosol Science and Technology, 2004</p><p class="ds-related-work--abstract ds2-5-body-sm">The objective of this study was to compare two real-time condensation particle counters for measurement of number concentrations of ultrafine particles (UFPs). The comparison is based on the data from side-by-side measurements conducted in several locations, both indoors and outdoors. CPC 3007 and P-Trak TM 8525 manufactured by TSI (instruments A and B, respectively) were used simultaneously. They measure particles in sizes from 0.01 to greater than 1 µm and 0.02 to greater than 1 µm, respectively. The results reveal a good correlation between the two instruments. The ratios of measured aerosol concentrations varied from 0.81 to 1.17, which implies that in all data sets the difference between the two instruments was less than ±20%. About 63% of the results were in the range of ±10%, and about 44% showed differences less than ±5%. The maximum particle concentration detected by instrument A was approximately 105,000 particles cm −3 and the minimum was about 230 particles cm −3 . Because of the lower particle size threshold for instrument A, it was expected that this instrument should never show concentrations lower than those detected by instrument B. This was the case in most of the measurement series. The results revealed that the concentration of UFPs changes rapidly, especially in the presence of a local UFP source. A sampling interval of 1 min is sufficient to provide substantial information about the change in concentration level.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Measurement of Ultrafine Particles: A Comparison of Two Handheld Condensation Particle Counters","attachmentId":45511561,"attachmentType":"pdf","work_url":"https://www.academia.edu/25199390/Measurement_of_Ultrafine_Particles_A_Comparison_of_Two_Handheld_Condensation_Particle_Counters","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/25199390/Measurement_of_Ultrafine_Particles_A_Comparison_of_Two_Handheld_Condensation_Particle_Counters"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="5" data-entity-id="71733489" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/71733489/Performance_study_of_various_Condensation_Particle_Counters_CPCs_development_of_a_methodology_based_on_steady_state_airborne_DEHS_particles_and_application_to_a_series_of_handheld_and_stationary_CPCs">Performance study of various Condensation Particle Counters (CPCs): development of a methodology based on steady-state airborne DEHS particles and application to a series of handheld and stationary CPCs</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="52357312" href="https://independent.academia.edu/OlivierWitschger">Olivier Witschger</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Journal of Physics: Conference Series</p><p class="ds-related-work--abstract ds2-5-body-sm">Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Performance study of various Condensation Particle Counters (CPCs): development of a methodology based on steady-state airborne DEHS particles and application to a series of handheld and stationary CPCs","attachmentId":80955082,"attachmentType":"pdf","work_url":"https://www.academia.edu/71733489/Performance_study_of_various_Condensation_Particle_Counters_CPCs_development_of_a_methodology_based_on_steady_state_airborne_DEHS_particles_and_application_to_a_series_of_handheld_and_stationary_CPCs","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/71733489/Performance_study_of_various_Condensation_Particle_Counters_CPCs_development_of_a_methodology_based_on_steady_state_airborne_DEHS_particles_and_application_to_a_series_of_handheld_and_stationary_CPCs"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="6" data-entity-id="52876235" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/52876235/Traceable_Calibration_of_Condensation_Particle_Counters_with_Respect_to_Smallest_Particle_Size_Detection_Limit_Counting_Efficiency_and_Concentration_Linearity">Traceable Calibration of Condensation Particle Counters with Respect to Smallest Particle Size Detection Limit, Counting Efficiency, and Concentration Linearity</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="40185549" href="https://independent.academia.edu/GilmoreSem">Gilmore Sem</a></div><p class="ds-related-work--abstract ds2-5-body-sm">For nearly 25 years, TSI condensation particle counters (CPCs) have been extensively used by researchers, including automobile and truck manufacturers, to measure the number concentration and, as part of a scanning mobility particle sizer (SMPS™) system, the size distribution of particle emissions from diesel and spark ignition engines. As proposed by the GRPE Particle Measurement Programme (PMP), a CPC shall be used to measure the particle number concentration of exhaust emissions during drive cycles for regulatory compliance or vehicle typeapproval purposes. Therefore, it is essential to calibrate CPCs using a traceable and independent method to ensure proper measurement performance. This study illustrates a traceable method of calibrating the smallest particle size detection limit, particle counting efficiency, and particle concentration linearity of CPCs by simultaneously testing several TSI Model 3010 CPCs (Caldow et al. 1992) using a commercially available aerosol electrometer...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Traceable Calibration of Condensation Particle Counters with Respect to Smallest Particle Size Detection Limit, Counting Efficiency, and Concentration Linearity","attachmentId":69927835,"attachmentType":"pdf","work_url":"https://www.academia.edu/52876235/Traceable_Calibration_of_Condensation_Particle_Counters_with_Respect_to_Smallest_Particle_Size_Detection_Limit_Counting_Efficiency_and_Concentration_Linearity","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/52876235/Traceable_Calibration_of_Condensation_Particle_Counters_with_Respect_to_Smallest_Particle_Size_Detection_Limit_Counting_Efficiency_and_Concentration_Linearity"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="7" data-entity-id="18377746" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/18377746/New_condensation_particle_counter_UF02">New condensation particle counter UF02</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="38374678" href="https://independent.academia.edu/KristinaPlau%C5%A1kait%C4%97">Kristina Plauškaitė</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Lithuanian Journal of Physics, 2006</p><p class="ds-related-work--abstract ds2-5-body-sm">A newly developed condensation particle counter UF-02 was approbated and tested. The investigations of the measured concentration range have shown that the condensation particle counter UF-02 can be used for measuring the particle number concentration from 0.002 to 100 000 cm −3 , and the determined cut-off size was 4 nm. Three newly developed condensation particle counters (CPCs) UF-02 were tested at the SMEAR I station in Värriö (Lapland, Finland). The studied period covers 26 April and 12 May 2003. These CPCs were used for measurement of the aerosol particle number concentration in the atmospheric boundary layer at the SMEAR I station. Two instruments were set into action with the cut-off size of 4.5 nm and one with 10 nm. The data of the particle number concentration variability were collected. The air mass backward trajectories were used to estimate the prehistory of the air masses. Moreover, trace gas (O3, NOx, and SO2) concentrations were analysed. During these studies the calibration and inter-comparison of instruments were also performed. The information about new characteristics of the instruments was obtained.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"New condensation particle counter UF02","attachmentId":40022761,"attachmentType":"pdf","work_url":"https://www.academia.edu/18377746/New_condensation_particle_counter_UF02","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/18377746/New_condensation_particle_counter_UF02"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="8" data-entity-id="52876229" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/52876229/Design_and_performance_characteristics_of_three_continuous_flow_condensation_particle_counters_a_summary">Design and performance characteristics of three continuous-flow condensation particle counters: a summary</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="40185549" href="https://independent.academia.edu/GilmoreSem">Gilmore Sem</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Atmospheric Research, 2002</p><p class="ds-related-work--abstract ds2-5-body-sm">Selection of the optimum condensation particle (nucleus) counter (CPC) for any application requires knowledge of the performance characteristics of available, usually commercial, instruments. Performance characteristics are a result of the design of a CPC. This paper describes the designs of three commercial CPCs that use continuous-flow, evaporation/condensation configurations. The paper reviews available data describing the performance of TSI 3010, 3022A, and 3025A CPCs. Data reported by a variety of investigators include detection efficiency as a function of monodispersed NaCl and Ag particles with diameters of 3-100 nm, effect on lower detection efficiency of ambient temperature from 0 to 40 jC, response time for step increase and step decrease of aerosol concentration, effect on detection efficiency of relative humidities of 0-50%, and effect on indicated concentration when feeding high-concentration aerosol to the CPCs. The reference standard is usually a Scheibel-Porstendörfer (1983) aerosol generator with an aerosol electrometer measuring the concentration of singly charged monodispersed aerosol exiting from a differential mobility analyzer. One set of such data has been obtained for Mo(CO) 6 aerosol. Limited data compare the CPCs' detection efficiency with an alternating gradient cloud chamber (NaCl aerosol) and an automatic diffusion battery (WO x aerosol).</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Design and performance characteristics of three continuous-flow condensation particle counters: a summary","attachmentId":69927843,"attachmentType":"pdf","work_url":"https://www.academia.edu/52876229/Design_and_performance_characteristics_of_three_continuous_flow_condensation_particle_counters_a_summary","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/52876229/Design_and_performance_characteristics_of_three_continuous_flow_condensation_particle_counters_a_summary"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="9" data-entity-id="110164768" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/110164768/Evaluation_of_a_Portable_Aerosol_Collector_and_Spectrometer_to_measure_particle_concentration_by_composition_and_size">Evaluation of a Portable Aerosol Collector and Spectrometer to measure particle concentration by composition and size</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="114534374" href="https://independent.academia.edu/LarissaStebounova">Larissa Stebounova</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Aerosol Science and Technology, 2019</p><p class="ds-related-work--abstract ds2-5-body-sm">We evaluated a newly developed Portable Aerosol Collector and Spectrometer (PACS) in the laboratory. We developed an algorithm to estimate mass concentration by size and composition with a PACS. In laboratory experiments, we compared particle size distributions measured with the PACS to research instruments for multi-modal aerosols: two-mode generated by spark discharge, consisting of ultrafine (fresh Mn fume) and fine particles (aged Cu fume); and threemode produced by adding coarse particles (Arizona road dust) to the two-mode. Near-real-time size distributions from the PACS compared favorably to those from a scanning mobility particle sizer and an aerodynamic particle sizer for the three-mode aerosol (number, bias = 9.4% and R 2 A c c e p t e d M a n u s c r i p t = 0.96; surface area, bias = 17.8%, R 2 = 0.77; mass, bias =-2.2%, R 2 = 0.94), but less so for the two-mode aerosol (number, bias =-17.7% and R 2 = 0.51; surface area, bias =-45.5%, R 2 = 0; for mass, bias =-81.75%, R 2 = 0.08). Elemental mass concentrations by size were similar to those measured with a nano micro-orifice uniform deposition impactor for coarse-mode particles, whereas agreement was considerably poorer for ultrafine-and fine-mode particles. The PACS has merit in estimating multi-metric concentrations by size and composition but requires further research to resolve discrepancies identified for two-mode aerosol.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Evaluation of a Portable Aerosol Collector and Spectrometer to measure particle concentration by composition and size","attachmentId":108066654,"attachmentType":"pdf","work_url":"https://www.academia.edu/110164768/Evaluation_of_a_Portable_Aerosol_Collector_and_Spectrometer_to_measure_particle_concentration_by_composition_and_size","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/110164768/Evaluation_of_a_Portable_Aerosol_Collector_and_Spectrometer_to_measure_particle_concentration_by_composition_and_size"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div></div></div><div class="ds-sticky-ctas--wrapper js-loswp-sticky-ctas hidden"><div class="ds-sticky-ctas--grid-container"><div class="ds-sticky-ctas--container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--sticky-ctas","attachmentId":85264646,"attachmentType":"pdf","workUrl":null}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--sticky-ctas","attachmentId":85264646,"attachmentType":"pdf","workUrl":null}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div><div class="ds-below-fold--grid-container"><div class="ds-work--container js-loswp-embedded-document"><div class="attachment_preview" data-attachment="Attachment_85264646" style="display: none"><div class="js-scribd-document-container"><div class="scribd--document-loading js-scribd-document-loader" style="display: block;"><img alt="Loading..." src="//a.academia-assets.com/images/loaders/paper-load.gif" /><p>Loading Preview</p></div></div><div style="text-align: center;"><div class="scribd--no-preview-alert js-preview-unavailable"><p>Sorry, preview is currently unavailable. You can download the paper by clicking the button above.</p></div></div></div></div><div class="ds-sidebar--container js-work-sidebar"><div class="ds-related-content--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="0" data-entity-id="98307276" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/98307276/An_Ultrafine_Water_Based_Condensation_Particle_Counter_and_its_Evaluation_under_Field_Conditions">An Ultrafine, Water-Based Condensation Particle Counter and its Evaluation under Field Conditions</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="234442958" href="https://independent.academia.edu/MarkStolzenburg">Mark Stolzenburg</a></div><p class="ds-related-work--metadata 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