{"id":12640,"date":"2025-10-20T08:00:03","date_gmt":"2025-10-20T06:00:03","guid":{"rendered":"https:\/\/blog.wika.com\/fr\/?p=12640"},"modified":"2025-11-24T09:14:27","modified_gmt":"2025-11-24T08:14:27","slug":"pourquoi-tester-etancheite-manometres-acier-inoxydable","status":"publish","type":"post","link":"https:\/\/blog.wika.com\/fr\/know-how\/pourquoi-tester-etancheite-manometres-acier-inoxydable\/","title":{"rendered":"Manom\u00e8tres en acier inox : Les tests d&rsquo;\u00e9tanch\u00e9it\u00e9 font toute la diff\u00e9rence"},"content":{"rendered":"<p><strong>L&rsquo;une des \u00e9tapes essentielles du process de production des manom\u00e8tres est le test d&rsquo;\u00e9tanch\u00e9it\u00e9 du syst\u00e8me de mesure. Il permet de s&rsquo;assurer que le fluide utilis\u00e9 ne s&rsquo;\u00e9chappe pas dans l&rsquo;environnement. Il existe cependant des diff\u00e9rences significatives dans la mani\u00e8re dont les tests d&rsquo;\u00e9tanch\u00e9it\u00e9 des manom\u00e8tres en acier inox sont r\u00e9alis\u00e9s sur le march\u00e9. Ces diff\u00e9rences ont une influence directe sur la qualit\u00e9 des instruments &#8211; et donc sur la s\u00e9curit\u00e9 du process et de l&rsquo;utilisateur.<\/strong><\/p>\n<h2>Le test d&rsquo;\u00e9tanch\u00e9it\u00e9 identifie les fuites dans le syst\u00e8me de mesure<\/h2>\n<p>Dans les manom\u00e8tres \u00e0 tube manom\u00e9trique en acier inox, par exemple, le syst\u00e8me de mesure se compose d\u2019abord du raccord process, puis du tube manom\u00e9trique et enfin de l\u2019embout. Ces composants sont soud\u00e9s ensuite au cours du process de production et sont par la suite soumis \u00e0 un test d\u2019\u00e9tanch\u00e9it\u00e9 rigoureux. \u00c9tant donn\u00e9 que le syst\u00e8me de mesure sera ult\u00e9rieurement expos\u00e9 \u00e0 la pression et en contact avec des fluides, il est tr\u00e8s important qu\u2019il pr\u00e9sente un haut niveau d\u2019\u00e9tanch\u00e9it\u00e9, notamment pour les fluides inflammables, explosifs ou toxiques.<\/p>\n\n      <div class=\"wp-caption alignright\" style=\"max-width:334px;\"><img decoding=\"async\" src=\"https:\/\/blog.wika.com\/fr\/wp-content\/blogs.dir\/26\/files\/2025\/10\/system-23x.50.100-ohne-loecher.3083-1.jpg\" alt=\"Syst\u00e8me de mesure d'un manom\u00e8tre \u00e0 tube manom\u00e9trique en acier inox\" \/><p class=\"wp-caption-text\">Le syst\u00e8me de mesure d&rsquo;un manom\u00e8tre se compose d&rsquo;un raccord, d&rsquo;un tube manom\u00e9trique et d&rsquo;un embout.<\/p><\/div>\n    \n<h2>Une fuite dans le syst\u00e8me de mesure peut avoir de graves cons\u00e9quences :<\/h2>\n<ul>\n<li>Danger pour le personnel et l&rsquo;environnement en raison d&rsquo;une fuite de produit (dangereux)<\/li>\n<li>Perte du fluide de traitement (co\u00fbteux)<\/li>\n<li>Co\u00fbts de maintenance \u00e9lev\u00e9s, arr\u00eat de l&rsquo;installation<\/li>\n<li>Dommages \u00e0 l&rsquo;environnement (\u00e9missions fugitives, substances toxiques)<\/li>\n<\/ul>\n<p>Une \u00e9tanch\u00e9it\u00e9 \u00e9lev\u00e9e des manom\u00e8tres accro\u00eet ainsi la s\u00e9curit\u00e9, garantit en outre le bon d\u00e9roulement des process et r\u00e9duit par cons\u00e9quent les temps d\u2019arr\u00eat. Un test d\u2019\u00e9tanch\u00e9it\u00e9 permettant d\u2019identifier les moindres fuites constitue donc une caract\u00e9ristique de qualit\u00e9 importante.<\/p>\n<p>&nbsp;<\/p>\n<h2>Tests d&rsquo;\u00e9tanch\u00e9it\u00e9 chez WIKA : 5 000 fois plus r\u00e9sistants que les normes en vigueur<\/h2>\n<ol>\n<li>Test \u00e0 l&rsquo;h\u00e9lium :\n<p>Le test d&rsquo;\u00e9tanch\u00e9it\u00e9 \u00e0 l&rsquo;h\u00e9lium est l&rsquo;une des m\u00e9thodes les plus exigeantes et les plus fiables pour d\u00e9tecter les fuites. C&rsquo;est pourquoi WIKA utilise cette m\u00e9thode \u00e9prouv\u00e9e en standard pour la fabrication de manom\u00e8tres en acier inox. Cela lui permet d&rsquo;atteindre un taux de fuite de 1 \u00b7 10<sup>-6<\/sup> mbar \u00b7 l\/s, le plus \u00e9lev\u00e9 de l&rsquo;industrie.<\/p>\n<p>Au cours de ce test, le syst\u00e8me de mesure est pressuris\u00e9 \u00e0 l&rsquo;h\u00e9lium dans une chambre pr\u00e9alablement isol\u00e9e sous vide. Un d\u00e9tecteur de fuites scrute ensuite la chambre \u00e0 vide pour d\u00e9tecter les fuites d&rsquo;h\u00e9lium. Cette m\u00e9thode \u00e9tant particuli\u00e8rement exigeante et pr\u00e9cise, elle est associ\u00e9e \u00e0 des co\u00fbts \u00e9lev\u00e9s pour le fabricant &#8211; des co\u00fbts d&rsquo;investissement pour l&rsquo;\u00e9quipement de test \u00e0 la maintenance et \u00e0 l&rsquo;utilisation de l&rsquo;h\u00e9lium comme traceur co\u00fbteux.<\/p>\n<\/li>\n<li><span style=\"font-size: 1rem\">Les normes du march\u00e9 :<br \/>\n<\/span>Les normes pertinentes telles que la norme europ\u00e9enne EN 837-1, la norme am\u00e9ricaine ASME B40,100 et la norme internationale ISO 5171 n&rsquo;exigent qu&rsquo;un taux de fuite de 5 \u00b7 10<sup>-3<\/sup><span style=\"font-size: 1rem\"> mbar \u00b7 l\/s en ce qui concerne l&rsquo;\u00e9tanch\u00e9it\u00e9.<\/p>\n<p><\/span><\/li>\n<li><span style=\"font-size: 1rem\">Les tests d&rsquo;\u00e9tanch\u00e9it\u00e9 les plus courants sur le march\u00e9 sont :<\/span><\/li>\n<\/ol>\n<ul>\n<li>Le test du bain d&rsquo;eau (appel\u00e9 test \u00e0 bulles) et<\/li>\n<li>le test de chute de pression &#8211;<\/li>\n<\/ul>\n<p>Ces tests ne d\u00e9tectent qu\u2019un taux de fuite de 10\u207b\u00b3 mbar\u00b7l\/s.<br \/>\nDe plus, le test \u00e0 bulles est tr\u00e8s sujet aux erreurs : de petites fuites dans le bain d\u2019eau peuvent facilement \u00e9chapper \u00e0 l\u2019\u0153il humain.<\/p>\n<p>\nEn revanche, le test \u00e0 l\u2019h\u00e9lium n\u2019est g\u00e9n\u00e9ralement propos\u00e9 qu\u2019en option et avec un suppl\u00e9ment.<br \/>\nAvec 1\u00b710\u207b\u2076 mbar\u00b7l\/s, le test \u00e0 l\u2019h\u00e9lium standard de WIKA est 5 000 fois plus rigoureux que les m\u00e9thodes courantes. Il d\u00e9tecte des fuites 5 000 fois plus petites, ce qui est crucial dans les applications o\u00f9 des fuites microscopiques peuvent entra\u00eener contamination, perte de pression ou risques pour la s\u00e9curit\u00e9.<\/p>\n<h2>Exemple pratique illustrant les effets de diff\u00e9rents taux de fuite<\/h2>\n<p>Ce tableau montre ce que cette diff\u00e9rence signifie en pratique pour une application gazi\u00e8re. <br \/>\nPar exemple avec de l&rsquo;\u00e9thyl\u00e8ne et une pression de process de 10 bar :<\/p>\n<table class=\"aligncenter\" style=\"height: 215px;width: 100.352%;border-style: solid;border-color: #a6a39e\" border=\"1\" width=\"100.352%\">\n<tbody>\n<tr style=\"background-color: a6a39e\">\n<td style=\"width: 170.188px;text-align: center;height: 59px\">\n<p><strong>Taux de fuite<\/strong><br \/>\n<strong>en mbar &#8211; l\/s<\/strong><\/p>\n<\/td>\n<td style=\"width: 208.547px;text-align: center;height: 59px\">\n<p><strong>Diam\u00e8tre du trou<\/strong><\/p>\n<\/td>\n<td style=\"width: 311.891px;text-align: center;height: 59px\">\n<p><strong>Description de la fuite de gaz<\/strong><br \/>\n<strong>(p = 10 bar)<\/strong><\/p>\n<\/td>\n<td style=\"width: 118.938px;text-align: center;height: 59px\">\n<p><strong>Perte de gaz<\/strong><br \/>\n<strong>apr\u00e8s 1 an<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 68px\">\n<td style=\"width: 170.188px;text-align: center;height: 68px\">\n<p>5 \u00b7 10<sup>-3<\/sup><\/p>\n<\/td>\n<td style=\"width: 208.547px;text-align: center;height: 68px\">\n<p>~ 6 \u00b5m<\/p>\n<\/td>\n<td style=\"width: 311.891px;text-align: center;height: 68px\">\n<p>1 cm<sup>3<\/sup> de perte de gaz en 1 minute<\/p>\n<\/td>\n<td style=\"width: 118.938px;background-color: #fe9900;text-align: center;height: 68px\">\n<p>~ 497 litres<\/p>\n<\/td>\n<\/tr>\n<tr style=\"background-color: #\">\n<td style=\"width: 170.188px;text-align: center;height: 88px\">\n<p>1 \u00b7 10<sup>-6<\/sup><\/p>\n<\/td>\n<td style=\"width: 208.547px;text-align: center;height: 88px\">\n<p>~ 0,1 \u00b5m<\/p>\n<\/td>\n<td style=\"width: 311.891px;text-align: center;height: 88px\">\n<p>1 cm<sup>3<\/sup> de perte de gaz en 3 jours<\/p>\n<\/td>\n<td style=\"width: 118.938px;background-color: #fe9900;text-align: center;height: 88px\">\n<p>~ 0.1 litres<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Cela illustre l&rsquo;importance d&rsquo;un test d&rsquo;\u00e9tanch\u00e9it\u00e9 pr\u00e9cis pour la qualit\u00e9 et la s\u00e9curit\u00e9 des manom\u00e8tres en acier inox. WIKA utilise le test d&rsquo;\u00e9tanch\u00e9it\u00e9 \u00e0 l&rsquo;h\u00e9lium en standard. Cette m\u00e9thode nous permet d&rsquo;offrir aux utilisateurs la meilleure protection possible contre les fuites.<\/p>\n<p><strong>Note<\/strong><br \/>\nVous trouverez de plus amples informations sur les manom\u00e8tres et autres instruments de mesure de pression sur le <a href=\"https:\/\/www.wika.com\/fr-fr\/page_d_accueil.WIKA\" rel=\"external\" target=\"_blank\">site web de WIKA<\/a>. Si vous avez des questions, <a href=\"https:\/\/www.wika.com\/fr-fr\/contact.WIKA\" rel=\"external\" target=\"_blank\">votre interlocuteur<\/a> se fera un plaisir de vous aider.<\/p>\n<p><strong>Also read our posts<\/strong><br \/>\n<a href=\"https:\/\/blog.wika.com\/en\/products\/pressure-products\/stainless-steel-pressure-gauges-facelift-brings-digital-features\/\">Stainless steel pressure gauges: Facelift brings digital features<\/a><br \/>\n<a href=\"https:\/\/blog.wika.com\/en\/knowhow\/stainless-steel-pressure-gauge-in-safety-version-selection-help\/\">Stainless steel pressure gauge in safety version: Selection guide<\/a><br \/>\n<a href=\"https:\/\/blog.wika.com\/en\/knowhow\/switch-contacts-make-pressure-gauges-and-thermometers-active\/\">Switch contacts make pressure gauges and thermometers \u201cactive\u201d<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;une des \u00e9tapes essentielles du process de production des manom\u00e8tres est le test d&rsquo;\u00e9tanch\u00e9it\u00e9 du syst\u00e8me de mesure. Il permet de s&rsquo;assurer que le fluide utilis\u00e9 ne s&rsquo;\u00e9chappe pas dans l&rsquo;environnement. Il existe cependant des diff\u00e9rences significatives dans la mani\u00e8re dont les tests d&rsquo;\u00e9tanch\u00e9it\u00e9 des manom\u00e8tres en acier inox sont r\u00e9alis\u00e9s sur le march\u00e9. Ces [&hellip;]<\/p>\n","protected":false},"author":164,"featured_media":12643,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,619],"tags":[432,75,394,621],"class_list":["post-12640","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","category-know-how","tag-tanchit","tag-manometre","tag-mesure-de-pression","tag-test-de-fuite"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Essai d&#039;\u00e9tanch\u00e9it\u00e9 des manom\u00e8tres en acier inoxydable - WIKA blog<\/title>\n<meta name=\"description\" content=\"Le test d&#039;\u00e9tanch\u00e9it\u00e9 des manom\u00e8tres en acier inox de WIKA est 5 000 fois plus r\u00e9sistant que les exigences standard.ts.\" \/>\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\/know-how\/pourquoi-tester-etancheite-manometres-acier-inoxydable\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Essai d&#039;\u00e9tanch\u00e9it\u00e9 des manom\u00e8tres en acier inoxydable - 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