{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,24]],"date-time":"2026-03-24T03:04:27Z","timestamp":1774321467629,"version":"3.50.1"},"reference-count":43,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2024,5,1]],"date-time":"2024-05-01T00:00:00Z","timestamp":1714521600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"national action program in the framework of the REACT EU Initiative"},{"name":"Politecnico di Torino, CALOS Department"},{"name":"companies Italgas Reti S.p.A. and C2R Energy Consulting S.r.l"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The Indoor Environmental Quality (IEQ) combines thermal, visual, acoustic, and air-quality conditions in indoor environments and affects occupants\u2019 health, well-being, and comfort. Performing continuous monitoring to assess IEQ is increasingly proving to be important, also due to the large amount of time that people spend in closed spaces. In the present study, the design, development, and metrological characterization of a low-cost multi-sensor device is presented. The device is part of a wider system, hereafter referred to as PROMET&amp;O (PROactive Monitoring for indoor EnvironmenTal quality &amp; cOmfort), that also includes a questionnaire for the collection of occupants\u2019 feedback on comfort perception and a dashboard to show end users all monitored data. The PROMET&amp;O multi-sensor monitors the quality conditions of indoor environments thanks to a set of low-cost sensors that measure air temperature, relative humidity, illuminance, sound pressure level, carbon monoxide, carbon dioxide, nitrogen dioxide, particulate matter, volatile organic compounds, and formaldehyde. The device architecture is described, and the design criteria related to measurement requirements are highlighted. Particular attention is paid to the calibration of the device to ensure the metrological traceability of the measurements. Calibration procedures, based on the comparison to reference standards and following commonly employed or ad hoc developed technical procedures, were defined and applied to the bare sensors of air temperature and relative humidity, carbon dioxide, illuminance, sound pressure level, particulate matter, and formaldehyde. The next calibration phase in the laboratory will be aimed at analyzing the mutual influences of the assembled multi-sensor hardware components and refining the calibration functions.<\/jats:p>","DOI":"10.3390\/s24092893","type":"journal-article","created":{"date-parts":[[2024,5,1]],"date-time":"2024-05-01T08:59:39Z","timestamp":1714553979000},"page":"2893","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Multi-Sensor Device for Traceable Monitoring of Indoor Environmental Quality"],"prefix":"10.3390","volume":"24","author":[{"given":"Virginia Isabella","family":"Fissore","sequence":"first","affiliation":[{"name":"Department of Energy, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-2572-9051","authenticated-orcid":false,"given":"Giuseppina","family":"Arcamone","sequence":"additional","affiliation":[{"name":"Department of Energy, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2010-6884","authenticated-orcid":false,"given":"Arianna","family":"Astolfi","sequence":"additional","affiliation":[{"name":"Department of Energy, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-6941-3133","authenticated-orcid":false,"given":"Alberto","family":"Barbaro","sequence":"additional","affiliation":[{"name":"Department of Electronics and Telecommunication, Politecnico di Torino, 10129 Turin, Italy"}]},{"given":"Alessio","family":"Carullo","sequence":"additional","affiliation":[{"name":"Department of Electronics and Telecommunication, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3907-5934","authenticated-orcid":false,"given":"Pietro","family":"Chiavassa","sequence":"additional","affiliation":[{"name":"Department of Control and Computer Engineering, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9932-5731","authenticated-orcid":false,"given":"Marina","family":"Clerico","sequence":"additional","affiliation":[{"name":"Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8535-549X","authenticated-orcid":false,"given":"Stefano","family":"Fantucci","sequence":"additional","affiliation":[{"name":"Department of Energy, Politecnico di Torino, 10129 Turin, Italy"}]},{"given":"Franco","family":"Fiori","sequence":"additional","affiliation":[{"name":"Department of Electronics and Telecommunication, Politecnico di Torino, 10129 Turin, Italy"}]},{"given":"Davide","family":"Gallione","sequence":"additional","affiliation":[{"name":"Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8371-6685","authenticated-orcid":false,"given":"Edoardo","family":"Giusto","sequence":"additional","affiliation":[{"name":"Department of Control and Computer Engineering, Politecnico di Torino, 10129 Turin, Italy"},{"name":"Department of Electrical and Information Technology Engineering, Universit\u00e0 di Napoli Federico II, 80138 Naples, Italy"}]},{"given":"Alice","family":"Lorenzati","sequence":"additional","affiliation":[{"name":"Department of Energy, Politecnico di Torino, 10129 Turin, Italy"}]},{"given":"Nicole","family":"Mastromatteo","sequence":"additional","affiliation":[{"name":"Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Turin, Italy"}]},{"given":"Bartolomeo","family":"Montrucchio","sequence":"additional","affiliation":[{"name":"Department of Control and Computer Engineering, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8779-4613","authenticated-orcid":false,"given":"Anna","family":"Pellegrino","sequence":"additional","affiliation":[{"name":"Department of Energy, Politecnico di Torino, 10129 Turin, Italy"}]},{"given":"Gabriele","family":"Piccablotto","sequence":"additional","affiliation":[{"name":"LAMSA\u2014Department of Architecture and Design, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8935-693X","authenticated-orcid":false,"given":"Giuseppina Emma","family":"Puglisi","sequence":"additional","affiliation":[{"name":"Logistics and Sustainability Department, Campus Management, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8607-593X","authenticated-orcid":false,"given":"Gustavo","family":"Ramirez-Espinosa","sequence":"additional","affiliation":[{"name":"Department of Control and Computer Engineering, Politecnico di Torino, 10129 Turin, Italy"},{"name":"Department of Electronics, Pontificia Universidad Javeriana, Bogot\u00e1 110231, Colombia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2555-3958","authenticated-orcid":false,"given":"Erica","family":"Raviola","sequence":"additional","affiliation":[{"name":"Department of Electronics and Telecommunication, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0159-5718","authenticated-orcid":false,"given":"Antonio","family":"Servetti","sequence":"additional","affiliation":[{"name":"Department of Control and Computer Engineering, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0794-9695","authenticated-orcid":false,"given":"Louena","family":"Shtrepi","sequence":"additional","affiliation":[{"name":"Department of Energy, Politecnico di Torino, 10129 Turin, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1080\/17508975.2019.1599318","article-title":"Towards an integrated analysis of the indoor environmental factors and its effects on occupants","volume":"12","author":"Bluyssen","year":"2020","journal-title":"Intell. 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