{"id":12949,"date":"2022-02-17T14:00:00","date_gmt":"2022-02-17T13:00:00","guid":{"rendered":"https:\/\/rdcomponents.com\/site\/?p=12949"},"modified":"2025-07-17T11:23:51","modified_gmt":"2025-07-17T09:23:51","slug":"23-termoresistenze-rtd","status":"publish","type":"post","link":"https:\/\/rdcomponents.com\/site\/2022\/02\/17\/23-termoresistenze-rtd\/","title":{"rendered":"#23 – Termoresistenze RTD"},"content":{"rendered":"\n
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\u00adIl nostro viaggio nel mondo dei sensori di temperatura oggi passa per le termoresistenze RTD (Resistance Temperature Detector<\/em>). Come i PTC<\/a><\/strong> (R&D Social \u2013 Articolo 20<\/a>) e i KTY<\/a><\/strong> (R&D Social \u2013 Articolo 21<\/a>), anche le termoresistenze RTD<\/strong> sono caratterizzate da un coefficiente di temperatura positivo, vale a dire da un aumento della resistenza in funzione dell\u2019aumento della temperatura. La particolarit\u00e0 degli RTD<\/strong> sta nella crescita costante della resistenza tale da garantire una lettura lineare, veloce e precisa in un range di utilizzo che va da -200\u00b0C a +850\u00b0C. Infatti la rappresentazione grafica della RT (resistenza vs temperatura<\/em>) \u00e8 una linea retta che rende pi\u00f9 facile e precisa la rilevazione della temperatura.<\/p>\n\n\n\n

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Termoresistenze RTD: Caratteristiche tecniche<\/h3>\n\n\n\n

Il primo riferimento storico che possiamo avere per un RTD<\/strong> \u00e8 del 1871. L\u2019Ingegnere Sir Charles William Siemens<\/em> (1823 \u2013 1883), prussiano, naturalizzato britannico, e successivamente tra i fondatori del potente gruppo SIEMENS, descrisse durante una lezione presso la Royal Society<\/em> di Londra il primo pirometro fondato sulla resistenza elettrica di un filo di Platino avvolto. <\/p>\n\n\n\n

In seguito fu il fisico inglese Hugh Longbourne Callendar<\/em> (1863 – 1930) che per primo studi\u00f2 e svilupp\u00f2 il “Termometro a resistenza di Platino<\/strong>“. Questo port\u00f2 alla creazione di uno strumento di lettura della temperatura estremamente preciso, basato sulla variazione del valore di resistenza di un metallo quando varia la temperatura a cui \u00e8 sottoposto.<\/p>\n\n\n\n

Il metallo risultato pi\u00f9 idoneo per questo tipo di sensore \u00e8 il Platino (Pt) la cui resistenza nominale ha un valore di 100 Ohm a 0\u00b0C.<\/p>\n\n\n\n

Per questo motivo le termoresistenze RTD<\/strong> sono spesso conosciute come sensori Pt, ai quali viene convenzionalmente aggiunto il valore di resistenza a 0\u00b0C. Per questo si parla di Pt100 oppure Pt1000, che significa sensore Pt (platino) 100 \u03a9 (oppure 1.000 \u03a9, 500 \u03a9) a 0\u00b0C.<\/p>\n\n\n\n

La normativa di riferimento \u00e8 la IEC 60751 (DIN EN 60751<\/em>) che definisce le caratteristiche sia dei sensori, che delle sonde ad essi connesse.<\/p>\n\n\n\n

I sensori PT sono suddivisi in diverse classi di precisione quali AA, A, B e infine C, con gradi di performance diversi.<\/p>\n\n\n\n

R&D Components \u00e8 in grado di fornire sia i\u00a0sensori PT, prodotti dei nostri partner tedeschi di UST, sia la sonda<\/a> <\/strong>completa, cablata secondo le esigenze dei nostri clienti.<\/p>\n\n\n\n

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Scarica l’articolo in versione stampabile cliccando qui sotto!<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

23-TERMORESISTENZE-RTD<\/a>Download<\/a><\/div>\n\n\n\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

\u00adIl nostro viaggio nel mondo dei sensori di temperatura oggi passa per le termoresistenze RTD (Resistance Temperature Detector). Come i PTC (R&D Social \u2013 Articolo 20) e i KTY (R&D Social \u2013 Articolo 21), anche le termoresistenze RTD sono caratterizzate da un coefficiente di temperatura positivo, vale a dire da un aumento della resistenza…<\/p>\n","protected":false},"author":2,"featured_media":13323,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[236],"tags":[189,178,175,188],"class_list":["post-12949","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-prodotti","tag-pt","tag-rtd","tag-sensori","tag-termoresistenze"],"yoast_head":"\n#23 - Termoresistenze RTD -<\/title>\n<meta name=\"description\" content=\"Oggi \u00e8 il turno delle termoresistenze RTD, dei componenti in platino che permettono una misurazione veloce e precisa della temperatura\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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Ferranti","author_link":"https:\/\/rdcomponents.com\/site\/author\/roberto\/"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/rdcomponents.com\/site\/category\/prodotti\/\" rel=\"category tag\">Prodotti<\/a>","rttpg_excerpt":"\u00adIl nostro viaggio nel mondo dei sensori di temperatura oggi passa per le termoresistenze RTD (Resistance Temperature Detector). Come i PTC (R&D Social \u2013 Articolo 20) e i KTY (R&D Social \u2013 Articolo 21), anche le termoresistenze RTD sono caratterizzate da un coefficiente di temperatura positivo, vale a dire da un aumento della resistenza...","_links":{"self":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/posts\/12949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/comments?post=12949"}],"version-history":[{"count":0,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/posts\/12949\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/media\/13323"}],"wp:attachment":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/media?parent=12949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/categories?post=12949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/tags?post=12949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}