{"id":6880,"date":"2016-03-10T18:41:37","date_gmt":"2016-03-10T17:41:37","guid":{"rendered":"http:\/\/test5.wika-blog-live.mcon.net\/?p=6880"},"modified":"2023-11-28T08:36:28","modified_gmt":"2023-11-28T07:36:28","slug":"pt100-pt1000-ou-ctn-quel-est-le-bon-element-de-mesure","status":"publish","type":"post","link":"https:\/\/blog.wika.com\/fr\/savoir-faire\/pt100-pt1000-ou-ctn-quel-est-le-bon-element-de-mesure\/","title":{"rendered":"Quel est le bon \u00e9l\u00e9ment de mesure entre le Pt100, Pt1000 ou le CTN  ?"},"content":{"rendered":"<p><strong>Le secteur\u00a0de la construction de machine me demande souvent quel est le bon \u00e9l\u00e9ment de mesure pour eux. C&rsquo;est pourquoi je veux, dans cet article, vous expliquer\u00a0les diff\u00e9rences entre les r\u00e9sistances les plus couramment utilis\u00e9s &#8211; Pt100, Pt1000 et CTN. J&rsquo;irai plus en d\u00e9tail sur les capteurs les moins utilis\u00e9s avec les \u00e9l\u00e9ments de mesure Ni1000 et KTY \u00e0 la fin de l&rsquo;article dans la comparaison.<\/strong><\/p>\n<p>Pt100, Pt1000\u00a0ou CTN ? Les thermom\u00e8tres \u00e0 r\u00e9sistance <a href=\"https:\/\/www.wika.com\/fr-fr\/lp_pt100_pt1000.WIKA\" rel=\"external\" target=\"_blank\">Pt100, Pt1000 <\/a>(coefficient de temp\u00e9rature positif PTC) et CTN (coefficient de temp\u00e9rature n\u00e9gatif) sont utilis\u00e9s partout dans <a href=\"https:\/\/www.wika.com\/fr-fr\/lp_mesure_de_temperature.WIKA\" rel=\"external\" target=\"_blank\">la mesure de temp\u00e9rature<\/a> industrielle o\u00f9 des temp\u00e9ratures faibles ou moyennes sont mesur\u00e9es. Dans l&rsquo;industrie du process, les \u00e9l\u00e9ments de mesure Pt100 et Pt1000 sont presque exclusivement utilis\u00e9s alors qu&rsquo;un CTN &#8211; et pas uniquement pour des raisons de co\u00fbt &#8211; est souvent utilis\u00e9 dans l&rsquo;industrie de la construction de machines. Puisque les \u00e9l\u00e9ments de mesure Pt100 et Pt1000 sont fabriqu\u00e9s en couche mince, la teneur en platine peut \u00eatre r\u00e9duite au minimum. Par cons\u00e9quent, la diff\u00e9rence de prix par rapport au CTN peut \u00eatre r\u00e9duite dans une\u00a0telle mesure\u00a0qu&rsquo;un passage du CTN au Pt100 ou PT1000 devient int\u00e9ressant\u00a0sur des quantit\u00e9s petites\u00a0\u00e0\u00a0moyennes. D&rsquo;autant plus que les r\u00e9sistances de mesure\u00a0en platine offrent des avantages significatifs par rapport aux coefficients de temp\u00e9rature n\u00e9gatives.<\/p>\n<h2>Avantages\u00a0et inconv\u00e9nients des diff\u00e9rents \u00e9l\u00e9ments de mesure<\/h2>\n<p><span lang=\"EN-US\" style=\"font-family: 'Arial','sans-serif';font-size: 12pt\"><span style=\"color: #000000\">Les \u00e9l\u00e9ments en platine Pt100 et Pt1000 offrent l&rsquo;avantage de r\u00e9pondre aux normes internationales (IEC 751 \/ DIN EN 60 751). En raison de mat\u00e9riaux et de crit\u00e8res sp\u00e9cifiques \u00e0 la production, une standardisation des \u00e9l\u00e9ments semi-conducteurs tels que le CTN n&rsquo;est pas possible. D&rsquo;ailleurs, leur capacit\u00e9 d&rsquo;\u00e9change est limit\u00e9. Les autres avantages des \u00e9l\u00e9ments en platine sont : une meilleure stabilit\u00e9 \u00e0 long terme et un meilleur comportement au cours des cycles de temp\u00e9rature, une gamme plus large de temp\u00e9rature ainsi qu&rsquo;une pr\u00e9cision de mesure \u00e9lev\u00e9e et une meilleure lin\u00e9arit\u00e9. La pr\u00e9cision de mesure \u00e9lev\u00e9e et la lin\u00e9arit\u00e9 sont \u00e9galement possibles avec une sonde CTN, mais seulement dans une gamme de temp\u00e9rature tr\u00e8s limit\u00e9e. Alors que les Pt100 et les Pt1000 en film mince sont adapt\u00e9es \u00e0 des temp\u00e9ratures allant jusqu&rsquo;\u00e0 500 \u00b0C, la sonde CTN standard ne peut \u00eatre utilis\u00e9 que\u00a0pour des temp\u00e9ratures jusqu&rsquo;\u00e0 env. 150 \u00b0C.<\/span><\/span><\/p>\n<h2>Influence de la ligne d&rsquo;alimentation<\/h2>\n<p>La r\u00e9sistance du c\u00e2ble affecte la valeur de mesure des capteurs de temp\u00e9rature \u00e0 2 fils et doit \u00eatre prise en compte. Pour le c\u00e2ble de cuivre avec une coupe transversale de 0.22 mm2, la valeur de\u00a0r\u00e9f\u00e9rence suivante s&rsquo;applique : 0,162 \u03a9 \/ m \u2192 0,42 \u00b0 C \/ m pour une Pt100. En variante, une version avec Pt 1000 peut \u00eatre choisie, avec laquelle l&rsquo;influence\u00a0du c\u00e2ble\u00a0d&rsquo;alimentation (\u00e0 0,04 \u00b0 C \/ m) est inf\u00e9rieure d&rsquo;un facteur de 10. L&rsquo;influence de la r\u00e9sistance du c\u00e2ble par rapport \u00e0 la r\u00e9sistance de base R25 pour un \u00e9l\u00e9ment de\u00a0 mesure CTN est beaucoup moins perceptible. En raison de la caract\u00e9ristique descendante\u00a0de la courbe\u00a0du CTN, l&rsquo;influence des temp\u00e9ratures plus \u00e9lev\u00e9es augmente de fa\u00e7on disproportionn\u00e9e en cas de temp\u00e9ratures plus \u00e9lev\u00e9es.<\/p>\n<h2>Conclusion<\/h2>\n<p>En cas de quantit\u00e9s \u00e9lev\u00e9es, l&rsquo;utilisation des r\u00e9sistances de mesure CTN est toujours justifi\u00e9e pour des raisons de co\u00fbts. Pour des quantit\u00e9s petites et moyennes, je recommande l&rsquo;utilisation d&rsquo;une r\u00e9sistance de mesure en platine. L&rsquo;utilisation d&rsquo;un Pt1000 fabriqu\u00e9 en technologie en couche mince est un parfait compromis entre les co\u00fbts d&rsquo;une part et la pr\u00e9cision de la mesure d&rsquo;autre part. Dans le tableau suivant, j&rsquo;ai compil\u00e9 pour vous les forces et les faiblesses des diff\u00e9rents \u00e9l\u00e9ments de mesure dans une vue d&rsquo;ensemble :<\/p>\n<p>&nbsp;<\/p>\n<table style=\"border-color: #686663\" border=\"1\">\n<tbody>\n<tr>\n<td style=\"background-color: #d9d9d9\"><strong>\u00a0Forces et faiblesses des diff\u00e9rents \u00e9l\u00e9ments de mesure<\/strong><\/td>\n<td style=\"background-color: #d9d9d9\">CTN<\/td>\n<td style=\"background-color: #d9d9d9\">Pt100\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">\u00a0PT1000<\/td>\n<td style=\"background-color: #d9d9d9\">\u00a0Ni1000<\/td>\n<td style=\"background-color: #d9d9d9\">KTY\u00a0<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #d9d9d9\">\u00a0Plage de temp\u00e9rature<\/td>\n<td style=\"background-color: #d9d9d9\">\u00a0&#8211;<\/td>\n<td style=\"background-color: #d9d9d9\">++<\/td>\n<td style=\"background-color: #d9d9d9\">++<\/td>\n<td style=\"background-color: #d9d9d9\">+<\/td>\n<td style=\"background-color: #d9d9d9\">\u00a0&#8211;<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #d9d9d9\">\u00a0Exactitude<\/td>\n<td style=\"background-color: #d9d9d9\">\u00a0&#8211;<\/td>\n<td style=\"background-color: #d9d9d9\">++<\/td>\n<td style=\"background-color: #d9d9d9\">++<\/td>\n<td style=\"background-color: #d9d9d9\">+<\/td>\n<td style=\"background-color: #d9d9d9\">&#8211;\u00a0<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #d9d9d9\">\u00a0Lin\u00e9arite<\/td>\n<td style=\"background-color: #d9d9d9\">&#8211;\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">++\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">++\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">+\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">++\u00a0<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #d9d9d9\">\u00a0Stabilit\u00e9 \u00e0 long terme<\/td>\n<td style=\"background-color: #d9d9d9\">+\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">++\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">++\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">++\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">+\u00a0<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #d9d9d9\">\u00a0Standards\u00a0 internationaux<\/td>\n<td style=\"background-color: #d9d9d9\">&#8211;\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">++\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">++\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">+\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">&#8211;\u00a0<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #d9d9d9\">\u00a0Sensibilit\u00e9 \u00e0 la temp\u00e9rature\u00a0(dR\/dT)<\/td>\n<td style=\"background-color: #d9d9d9\">++\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">&#8211;\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">+\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">+\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">+\u00a0<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #d9d9d9\">\u00a0Influence de la ligne d&rsquo;alimentation<\/td>\n<td style=\"background-color: #d9d9d9\">++\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">&#8211;\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">+\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">+\u00a0<\/td>\n<td style=\"background-color: #d9d9d9\">+\u00a0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><strong>Note<\/strong><br \/>\nNos capteurs de temp\u00e9rature pour <a href=\"https:\/\/www.wika.com\/fr-fr\/construction_de_machines_et_automatisation.WIKA\" target=\"_blank\" rel=\"noopener noreferrer external\">l&rsquo;industrie\u00a0de\u00a0construction des machines\u00a0<\/a>sont disponibles avec tous les \u00e9l\u00e9ments de mesure de base. De plus amples informations peuvent \u00eatre trouv\u00e9es sur le site WIKA. Les courbes caract\u00e9ristiques des diff\u00e9rents \u00e9l\u00e9ments de mesure peuvent \u00eatre vus dans la liste suivante :<\/p>\n<figure><a href=\"https:\/\/blog.wika.com\/de\/files\/2015\/12\/blog_2015-10_kennlinienmesselemente_rdss.jpg\"><img decoding=\"async\" src=\"https:\/\/blog.wika.com\/de\/files\/2015\/12\/blog_2015-10_kennlinienmesselemente_rdss-838x471.jpg\" alt=\"Kennlinien verschiedener Messelemente\" \/><\/a><\/figure>\n<p>Regardez \u00e9galement la vid\u00e9o suivante pour en savoir plus sur les diff\u00e9rences entre une sonde \u00e0 r\u00e9sistance Pt100 et une Pt1000 :<\/p>\n<div data-fullscreen=\"disabled\" data-mode=\"normal\" data-oembed=\"1\" data-provider=\"youtube\" data-reset-after-played id=\"arve-youtube-hxmytpddn7g\" style=\"max-width:900px;\" class=\"arve\">\n<div class=\"arve-inner\">\n<div style=\"aspect-ratio:500\/281\" class=\"arve-embed arve-embed--has-aspect-ratio\">\n<div class=\"arve-ar\" style=\"padding-top:56.200000%\"><\/div>\n<p>\t\t\t<iframe allow=\"accelerometer &apos;none&apos;;autoplay &apos;none&apos;;bluetooth &apos;none&apos;;browsing-topics &apos;none&apos;;camera &apos;none&apos;;clipboard-read &apos;none&apos;;clipboard-write;display-capture &apos;none&apos;;encrypted-media &apos;none&apos;;gamepad &apos;none&apos;;geolocation &apos;none&apos;;gyroscope &apos;none&apos;;hid &apos;none&apos;;identity-credentials-get &apos;none&apos;;idle-detection &apos;none&apos;;keyboard-map &apos;none&apos;;local-fonts;magnetometer &apos;none&apos;;microphone &apos;none&apos;;midi &apos;none&apos;;otp-credentials &apos;none&apos;;payment &apos;none&apos;;picture-in-picture;publickey-credentials-create &apos;none&apos;;publickey-credentials-get &apos;none&apos;;screen-wake-lock &apos;none&apos;;serial &apos;none&apos;;summarizer &apos;none&apos;;sync-xhr;usb &apos;none&apos;;web-share;window-management &apos;none&apos;;xr-spatial-tracking &apos;none&apos;;\" allowfullscreen=\"\" class=\"arve-iframe fitvidsignore\" credentialless data-arve=\"arve-youtube-hxmytpddn7g\" data-lenis-prevent=\"\" data-src-no-ap=\"https:\/\/www.youtube-nocookie.com\/embed\/HXMytpddn7g?feature=oembed&amp;iv_load_policy=3&amp;modestbranding=1&amp;rel=0&amp;autohide=1&amp;playsinline=0&amp;autoplay=0&amp;enablejsapi=1\" frameborder=\"0\" height=\"505.8\" loading=\"lazy\" name=\"\" referrerpolicy=\"strict-origin-when-cross-origin\" sandbox=\"allow-scripts allow-same-origin allow-presentation allow-popups allow-popups-to-escape-sandbox\" scrolling=\"no\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/HXMytpddn7g?feature=oembed&#038;iv_load_policy=3&#038;modestbranding=1&#038;rel=0&#038;autohide=1&#038;playsinline=0&#038;autoplay=0&#038;enablejsapi=1\" title=\"How does a resistance thermometer work? | Resistance thermometers per IEC 60751\" width=\"900\"><\/iframe><\/p><\/div>\n<\/p><\/div>\n<p>\t<script type=\"application\/ld+json\">{\"@context\":\"http:\\\/\\\/schema.org\\\/\",\"@id\":\"https:\\\/\\\/blog.wika.com\\\/fr\\\/savoir-faire\\\/pt100-pt1000-ou-ctn-quel-est-le-bon-element-de-mesure\\\/#arve-youtube-hxmytpddn7g\",\"type\":\"VideoObject\",\"embedURL\":\"https:\\\/\\\/www.youtube-nocookie.com\\\/embed\\\/HXMytpddn7g?feature=oembed&iv_load_policy=3&modestbranding=1&rel=0&autohide=1&playsinline=0&autoplay=0&enablejsapi=1\",\"name\":\"How does a resistance thermometer work? | Resistance thermometers per IEC 60751\",\"thumbnailUrl\":\"https:\\\/\\\/i.ytimg.com\\\/vi\\\/HXMytpddn7g\\\/hqdefault.jpg\",\"uploadDate\":\"2019-03-08T15:11:46Z\",\"author\":\"WIKA Group\",\"description\":\"What exactly is a resistance thermometer, a Pt100 or a Pt1000 sensor? How do Pt100 and Pt1000 resistance sensors differ? These and other important differences are explained in this video about electrical thermometers.\\n\\n#Temperature #ProcessControl #Thermometer #TemperatureMeasurement #IndustrialAutomation\\n\\n\\u25ac Contents of this video \\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac\\u25ac \\n0:00 Intro \\n0:12 Resistance thermometer working principle\\n0:47 Platinum resistance thermometer range\\n1:21 RTD: accuracy and standard measuring range\\n1:57 Pt100 temperature sensor: an industrial standard\\n2:10 Pt1000 and Pt25: for special cases\\n\\u00a0\\nUsually, two different types of electrical thermometers are used in industrial applications \\u2013 resistance thermometers and thermocouples. How thermocouples work is explained in this video:  With resistance thermometers, the temperature is determined using an ohmic measuring resistor. The \\u201cPt\\u201d in Pt100 stands for the chemical element platinum, the next digit indicates the resistance value of the sensor at zero degrees Celsius. The most frequently used measuring resistor, the Pt100, therefore has an electrical resistance of 100 \\u03a9 (ohms) at 0 \\u00b0C. In special applications, Pt1000 temperature sensors are also used. As the temperature drops or rises, the electrical resistance changes \\u2013 following a defined characteristic curve which is regulated by international standards. The temperature can be determined very precisely on the basis of the measured resistance.\\n\\u00a0\\nAccuracy and measuring ranges of Pt100\\\/Pt1000 temperature probes\\nAs with the traditional dial thermometer (see also our video for correct reading of thermometers:  the resistance thermometer has different accuracy classes. The following applies: The more accurately a resistance thermometer should measure, the more limited its permissible measuring range is. Likewise, you must also consider the type (design) of the measuring resistor.\\nIs a thin-film or wire-wound resistor used? Depending on the measuring resistor selected, there are different temperature measuring ranges based on the IEC 60751 standard. For example, class B wire-wound resistance thermometers have a defined measuring range of -196 \\u00b0C to a maximum of 600 \\u00b0C. If the temperature exceeds or drops below this range, the measured values of the temperature sensors begin to drift so they no longer measure within the defined accuracy and thus the measuring result is falsified. With the current level of technology, for thin-film sensors, this drift is stronger than with wire-wound sensors.\\n\\u00a0\\nFurther information on Pt100 and Pt1000 sensors can be found on our website: \\n\\u00a0\\n\\ud83d\\uded2 With WIKA, you can configure and order the most common resistance thermometers directly in the online shop:  \\n\\n\\ud83c\\udf10 You can find an overview of all resistance thermometers on our website: \\n\\u00a0\\n\\ud83d\\udcd6 Would you like to learn more about resistance thermometers? Then read our blog ( or the technical information on the subject \\u201cOperating limits and accuracies of platinum resistance thermometers per DIN EN IEC 60751\\u201d (\\n\\n-------------------------------------------------------------------------------\\n\\nFollow us on our social media channels:\\n\\ud83d\\udcfa YouTube: \\n\\u2705 LinkedIn:\"}<\/script><\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le secteur\u00a0de la construction de machine me demande souvent quel est le bon \u00e9l\u00e9ment de mesure pour eux. C&rsquo;est pourquoi je veux, dans cet article, vous expliquer\u00a0les diff\u00e9rences entre les r\u00e9sistances les plus couramment utilis\u00e9s &#8211; Pt100, Pt1000 et CTN. J&rsquo;irai plus en d\u00e9tail sur les capteurs les moins utilis\u00e9s avec les \u00e9l\u00e9ments de mesure [&hellip;]<\/p>\n","protected":false},"author":128,"featured_media":6881,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[304],"class_list":["post-6880","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-savoir-faire","tag-thermometre"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Quel est le bon \u00e9l\u00e9ment de mesure entre le Pt100, Pt1000 ou le CTN ? - Blog WIKA<\/title>\n<meta name=\"description\" content=\"Le secteur\u00a0de la construction de machine me demande souvent quel est le bon \u00e9l\u00e9ment de mesure pour eux. 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