{"id":8008,"date":"2019-01-21T08:00:41","date_gmt":"2019-01-21T07:00:41","guid":{"rendered":"https:\/\/blog.wika.com\/fr\/?p=8008"},"modified":"2023-11-16T09:53:04","modified_gmt":"2023-11-16T08:53:04","slug":"criteres-de-selection-des-thermometres-a-cadran-le-capillaire","status":"publish","type":"post","link":"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/","title":{"rendered":"Crit\u00e8res de s\u00e9lection des thermom\u00e8tres \u00e0 cadran (3): Le capillaire"},"content":{"rendered":"<p><strong>Bim\u00e9tallique ou \u00e0 dilatation de gaz &#8211; la question du thermom\u00e8tre \u00e0 cadran avec capillaire appropri\u00e9 pour un type de process est tr\u00e8s simple : seuls les thermom\u00e8tres \u00e0 dilatation de gaz peuvent \u00eatre combin\u00e9s avec un capillaire.<\/strong><\/p>\n\n      <div class=\"wp-caption alignright\" style=\"max-width:396px;\"><img decoding=\"async\" src=\"https:\/\/blog.wika.com\/fr\/wp-content\/blogs.dir\/26\/files\/2018\/11\/gasdruckthermometer-mit-fernleitung-388x531.jpg\" alt=\"Dial thermometer with capillary\" \/><p class=\"wp-caption-text\">Thermom\u00e8tre \u00e0 cadran avec capillaire \u2013\u00a0Cet assemblage est uniquement possible avec un thermom\u00e8tre \u00e0 dilatation de gaz<\/p><\/div>\n    \n<p>En cas de changement de temp\u00e9rature, les deux types de thermom\u00e8tre \u00e0 cadran fonctionnent conform\u00e9ment au principe de dilatation. Mais la rotation du bim\u00e9tal h\u00e9lico\u00efdal des thermom\u00e8tres bim\u00e9talliques ne peut que r\u00e9agir directement sur l\u2019indication (liaison m\u00e9canique directe) et sans transfert indirect\/d\u00e9port\u00e9. Un thermom\u00e8tre \u00e0 dilatation de gaz est lui adapt\u00e9 \u00e0 la transmission de la valeur mesur\u00e9e par capillaire gr\u00e2ce \u00e0\u00a0 son remplissage h\u00e9lium. Un tel capillaire a un diam\u00e8tre ext\u00e9rieur de seulement 2 mm et un diam\u00e8tre int\u00e9rieur de 0,1 \u00e0 0,2 mm.<\/p>\n<p>Un thermom\u00e8tre \u00e0 cadran avec capillaire permet aux utilisateurs de mesurer la temp\u00e9rature du process\u00a0 \u00e0 des endroits inaccessibles. \u00c0 l&rsquo;aide d&rsquo;un bulbe de contact, elle peut \u00e9galement \u00eatre mesur\u00e9e sur de petites canalisations. Un autre avantage non n\u00e9gligeable est la centralisation lorsqu\u2019il y a de grandes distances, les thermom\u00e8tres peuvent \u00eatre regroup\u00e9s dans un tableau de bord, une armoire de commande ou un tableau de commande.<\/p>\n<h2>Sp\u00e9cification du dispositif de mesure<\/h2>\n<p>Pour d\u00e9finir les sp\u00e9cifications d\u2019un thermom\u00e8tre \u00e0 dilatation de gaz avec capillaire, il faut conna\u00eetre l\u2019\u00e9tendue de mesure, la longueur du capillaire et le type de raccord de la sonde de mesure (le \u00ab plongeur \u00bb). Avec une longueur de capillaire jusqu&rsquo;\u00e0 60 m, WIKA garantit la pr\u00e9cision en classe 1 de l&rsquo;instrument (conform\u00e9ment \u00e0 la norme EN 13190). La pression de remplissage n\u00e9cessaire pour un thermom\u00e8tre \u00e0 cadran avec capillaire WIKA varie entre 25 bar (grande plage) et 180 bar (petite plage).<\/p>\n<p>Cette configuration peut \u00eatre install\u00e9e dans une usine sans aucun probl\u00e8me. Cependant, les utilisateurs doivent respecter un rayon de courbure minimal pour s&rsquo;assurer que le capillaire ne se plie pas et que l&rsquo;h\u00e9lium puisse se dilater. De plus, nous recommandons une protection spiral\u00e9e en acier inoxydable contre les chocs m\u00e9caniques.<\/p>\n<p><strong>Remarque:<br \/>\n<\/strong>D&rsquo;autres articles concernant les crit\u00e8res de s\u00e9lection des thermom\u00e8tres bim\u00e9tallique et \u00e0 dilatation de gaz sont consacr\u00e9s au<a href=\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-pour-les-thermometres-a-cadran-temps-de-reponse\/\"> temps de r\u00e9action <\/a>et \u00e0 la <a href=\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-pour-les-thermometres-a-cadran-temperature-de-process\/\">temp\u00e9rature du process<\/a>. Vous trouverez de plus amples informations sur ces deux types d\u2019instruments sur le site Web WIKA, rubriques \u00ab<a href=\"https:\/\/www.wika.com\/fr-fr\/thermometres_a_cadran.WIKA\" rel=\"external\" target=\"_blank\">Thermom\u00e8tres \u00e0 cadran<\/a>\u00bb et \u00ab<a href=\"https:\/\/www.wika.com\/fr-fr\/thermometres_avec_contacts_electriques.WIKA\" rel=\"external\" target=\"_blank\">Thermom\u00e8tres avec contacts \u00e9lectriques<\/a>\u00bb.<strong><br \/>\n<\/strong><\/p>\n<p>Apprenez-en davantage sur les diff\u00e9rences entre les thermom\u00e8tres bim\u00e9talliques et \u00e0 dilatation de gaz dans la vid\u00e9o suivante:<\/p>\n<div data-fullscreen=\"disabled\" data-mode=\"normal\" data-oembed=\"1\" data-provider=\"youtube\" data-reset-after-played id=\"arve-youtube-vjse8ss800w\" 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-vjse8ss800w\" data-lenis-prevent=\"\" data-src-no-ap=\"https:\/\/www.youtube-nocookie.com\/embed\/Vjse8sS800w?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\/Vjse8sS800w?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=\"Bimetal vs. gas-actuated thermometers | What is the difference?\" 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\\\/produits\\\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\\\/#arve-youtube-vjse8ss800w\",\"type\":\"VideoObject\",\"embedURL\":\"https:\\\/\\\/www.youtube-nocookie.com\\\/embed\\\/Vjse8sS800w?feature=oembed&iv_load_policy=3&modestbranding=1&rel=0&autohide=1&playsinline=0&autoplay=0&enablejsapi=1\",\"name\":\"Bimetal vs. gas-actuated thermometers | What is the difference?\",\"thumbnailUrl\":\"https:\\\/\\\/i.ytimg.com\\\/vi\\\/Vjse8sS800w\\\/hqdefault.jpg\",\"uploadDate\":\"2018-07-18T15:50:56Z\",\"author\":\"WIKA Group\",\"description\":\"In industrial temperature measurement, primarily two types of dial thermometers are used: bimetal and gas-actuated thermometers. Which measuring principle should be used depends on a number of different factors, such as response time, temperature limits & application range.\\n\\nBimetal thermometers operate with a measuring system in the form of a helical or spiral tube. The measuring system consists of two sheets with different expansion coefficients, which are inseparably joined. Through the mechanical deformation of the bimetal strip, a rotational movement results, caused by temperature changes. This movement is transferred through a pointer shaft to the pointer of the thermometer.\\n\\nThe measuring system of gas-actuated thermometers consists of a stem, capillary and Bourdon tube in the case. These parts are combined to form a single unit. The entire measuring system is filled with an inert gas under pressure. Any change in temperature causes a change in internal pressure in the stem. The pressure deforms the measuring tube and the deflection is transferred to the pointer via a movement.\\n\\nBut how do I find the right thermometer for my area of application?\\nDue to their simpler design, bimetal thermometers are considerably less expensive. An important advantage of gas-actuated thermometers is their fast response time. Further advantages: Via a capillary with a length of up to 60 metres or more, gas-actuated thermometers can also be mounted remotely from the measuring point. Liquid filling of the gas-actuated thermometers is possible even at medium temperatures above 250 \\u00b0C.\\n\\nSo you see: The final decision as to which dial thermometer will be used depends on a number of different factors. Our specialists are happy to advise you in the selection of the right thermometer.\\n\\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \\n\\n\\ud83d\\udcd6 You can also find interesting posts on this subject in our WIKA blog.\\nSelection criteria for dial thermometers \\u2013 response time: \\nSelection criteria for dial thermometers \\u2013 process temperature: \\n\\n\\ud83d\\uded2 Order dial thermometers now, directly from our online shop: \\n\\n\\ud83c\\udf10 Dial thermometers from WIKA can be found here: \\n\\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \\n \\nFollow us on our social media channels:\\n\\ud83d\\udcfa YouTube: \\n\\ud83c\\udfaf LinkedIn:\"}<\/script><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Bim\u00e9tallique ou \u00e0 dilatation de gaz &#8211; la question du thermom\u00e8tre \u00e0 cadran avec capillaire appropri\u00e9 pour un type de process est tr\u00e8s simple : seuls les thermom\u00e8tres \u00e0 dilatation de gaz peuvent \u00eatre combin\u00e9s avec un capillaire. En cas de changement de temp\u00e9rature, les deux types de thermom\u00e8tre \u00e0 cadran fonctionnent conform\u00e9ment au principe [&hellip;]<\/p>\n","protected":false},"author":126,"featured_media":8011,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[232,6,5,221],"tags":[323,304],"class_list":["post-8008","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","category-produits","category-savoir-faire","category-produits-temperature","tag-temprature","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>Crit\u00e8res de s\u00e9lection des thermom\u00e8tres \u00e0 cadran (3): Le capillaire<\/title>\n<meta name=\"description\" content=\"Bim\u00e9tallique ou \u00e0 dilatation de gaz - la question du thermom\u00e8tre \u00e0 cadran avec capillaire appropri\u00e9 pour un type de process est tr\u00e8s simple : seuls les thermom\u00e8tres \u00e0 dilatation de gaz peuvent \u00eatre combin\u00e9s avec un capillaire.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Crit\u00e8res de s\u00e9lection des thermom\u00e8tres \u00e0 cadran (3): Le capillaire\" \/>\n<meta property=\"og:description\" content=\"Bim\u00e9tallique ou \u00e0 dilatation de gaz - la question du thermom\u00e8tre \u00e0 cadran avec capillaire appropri\u00e9 pour un type de process est tr\u00e8s simple : seuls les thermom\u00e8tres \u00e0 dilatation de gaz peuvent \u00eatre combin\u00e9s avec un capillaire.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog WIKA\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.wika.com\/fr\/files\/2018\/11\/beitragsbild_fernleitung_neu.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"838\" \/>\n\t<meta property=\"og:image:height\" content=\"471\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Pierre Forestier\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Pierre Forestier\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/\"},\"author\":{\"name\":\"Pierre Forestier\",\"@id\":\"https:\/\/blog.wika.com\/fr\/#\/schema\/person\/6c7424b4c91008e8a02c85213a8bbe64\"},\"headline\":\"Crit\u00e8res de s\u00e9lection des thermom\u00e8tres \u00e0 cadran (3): Le capillaire\",\"datePublished\":\"2019-01-21T07:00:41+00:00\",\"dateModified\":\"2023-11-16T08:53:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/\"},\"wordCount\":483,\"commentCount\":2,\"publisher\":{\"@id\":\"https:\/\/blog.wika.com\/fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blog.wika.com\/fr\/files\/2018\/11\/beitragsbild_fernleitung_neu.jpg\",\"keywords\":[\"Temp\u00e9rature\",\"Thermom\u00e8tre\"],\"articleSection\":[\"Applications\",\"Produits\",\"Savoir-faire\",\"Temp\u00e9rature\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/\",\"url\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/\",\"name\":\"Crit\u00e8res de s\u00e9lection des thermom\u00e8tres \u00e0 cadran (3): Le capillaire\",\"isPartOf\":{\"@id\":\"https:\/\/blog.wika.com\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blog.wika.com\/fr\/files\/2018\/11\/beitragsbild_fernleitung_neu.jpg\",\"datePublished\":\"2019-01-21T07:00:41+00:00\",\"dateModified\":\"2023-11-16T08:53:04+00:00\",\"description\":\"Bim\u00e9tallique ou \u00e0 dilatation de gaz - la question du thermom\u00e8tre \u00e0 cadran avec capillaire appropri\u00e9 pour un type de process est tr\u00e8s simple : seuls les thermom\u00e8tres \u00e0 dilatation de gaz peuvent \u00eatre combin\u00e9s avec un capillaire.\",\"breadcrumb\":{\"@id\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/#primaryimage\",\"url\":\"https:\/\/blog.wika.com\/fr\/files\/2018\/11\/beitragsbild_fernleitung_neu.jpg\",\"contentUrl\":\"https:\/\/blog.wika.com\/fr\/files\/2018\/11\/beitragsbild_fernleitung_neu.jpg\",\"width\":838,\"height\":471,\"caption\":\"Thermometer mit Fernleitung\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blog.wika.com\/fr\/produits\/criteres-de-selection-des-thermometres-a-cadran-le-capillaire\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/blog.wika.com\/fr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Crit\u00e8res de s\u00e9lection des thermom\u00e8tres \u00e0 cadran (3): Le capillaire\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blog.wika.com\/fr\/#website\",\"url\":\"https:\/\/blog.wika.com\/fr\/\",\"name\":\"Blog WIKA\",\"description\":\"Notre blog vous propose de nombreux articles int\u00e9ressants sur la mesure de pression, temp\u00e9rature, niveau, d\u00e9bit et calibration et donne un aper\u00e7u du Groupe WIKA\",\"publisher\":{\"@id\":\"https:\/\/blog.wika.com\/fr\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blog.wika.com\/fr\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/blog.wika.com\/fr\/#organization\",\"name\":\"WIKA Instruments\",\"url\":\"https:\/\/blog.wika.com\/fr\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blog.wika.com\/fr\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/blog.wika.com\/fr\/files\/2016\/02\/logo_wika_cmyk.jpg\",\"contentUrl\":\"https:\/\/blog.wika.com\/fr\/files\/2016\/02\/logo_wika_cmyk.jpg\",\"width\":758,\"height\":263,\"caption\":\"WIKA Instruments\"},\"image\":{\"@id\":\"https:\/\/blog.wika.com\/fr\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/blog.wika.com\/fr\/#\/schema\/person\/6c7424b4c91008e8a02c85213a8bbe64\",\"name\":\"Pierre Forestier\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blog.wika.com\/fr\/files\/2023\/06\/pierre-blog-120x120.jpg\",\"url\":\"https:\/\/blog.wika.com\/fr\/files\/2023\/06\/pierre-blog-120x120.jpg\",\"contentUrl\":\"https:\/\/blog.wika.com\/fr\/files\/2023\/06\/pierre-blog-120x120.jpg\",\"caption\":\"Pierre Forestier\"},\"description\":\"Chez WIKA France depuis 1998, j\u2019ai entre autres la responsabilit\u00e9 des instruments de mesure de pression et de temp\u00e9rature m\u00e9caniques. 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