{"id":31367,"date":"2026-01-15T07:58:09","date_gmt":"2026-01-15T07:58:09","guid":{"rendered":"https:\/\/instrava.com\/?p=31367"},"modified":"2026-01-22T07:36:30","modified_gmt":"2026-01-22T07:36:30","slug":"quest-ce-quun-rotametre-guide-pratique-pour-la-mesure-des-debits-a-surface-variable","status":"publish","type":"post","link":"https:\/\/instrava.com\/fr\/quest-ce-quun-rotametre-guide-pratique-pour-la-mesure-des-debits-a-surface-variable\/","title":{"rendered":"Qu'est-ce qu'un rotam\u00e8tre ? Guide pratique de la mesure des d\u00e9bits \u00e0 surface variable"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"31367\" class=\"elementor elementor-31367\" data-elementor-post-type=\"post\">\n\t\t\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-3cb51d89 e-flex e-con-boxed e-con e-parent\" data-id=\"3cb51d89\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-6317a56d elementor-widget elementor-widget-text-editor\" data-id=\"6317a56d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"344\" data-end=\"617\">Le rotam\u00e8tre est l'un des instruments les plus utilis\u00e9s pour mesurer visuellement le d\u00e9bit dans les processus industriels. Malgr\u00e9 le d\u00e9veloppement rapide des technologies num\u00e9riques et \u00e9lectroniques, il reste pertinent en raison de sa simplicit\u00e9, de sa fiabilit\u00e9 et de sa lisibilit\u00e9 directe.<\/p>\r\n<p data-start=\"619\" data-end=\"937\">Dans de nombreuses applications industrielles, les ing\u00e9nieurs et les op\u00e9rateurs s'appuient toujours sur un rotam\u00e8tre pour obtenir une indication rapide du d\u00e9bit, des performances stables et une maintenance r\u00e9duite. Pour comprendre ce qu'il est et pourquoi il continue d'\u00eatre utilis\u00e9, il faut aller au-del\u00e0 des d\u00e9finitions de base et se concentrer sur la fa\u00e7on dont il r\u00e9pond aux besoins r\u00e9els des processus.<\/p>\r\n\r\n\r\n<hr data-start=\"939\" data-end=\"942\" \/>\r\n\r\n<h2 data-start=\"944\" data-end=\"982\">Comprendre le concept de rotam\u00e8tre<\/h2>\r\n<p data-start=\"984\" data-end=\"1250\">A <a href=\"https:\/\/instrava.com\/product\/variable-area-rotameter-acrylic-flow-meter\/\"><strong>rotam\u00e8tre<\/strong><\/a> est un type de d\u00e9bitm\u00e8tre \u00e0 surface variable con\u00e7u pour mesurer le d\u00e9bit de liquides ou de gaz en permettant \u00e0 un flotteur de se d\u00e9placer librement \u00e0 l'int\u00e9rieur d'un tube conique. Lorsque le d\u00e9bit augmente, le flotteur s'\u00e9l\u00e8ve jusqu'\u00e0 une position o\u00f9 la force ascendante du fluide \u00e9quilibre la gravit\u00e9.<\/p>\r\n<p data-start=\"1252\" data-end=\"1425\">Ce principe simple mais efficace en fait un choix fiable pour de nombreuses t\u00e2ches de mesure de d\u00e9bit o\u00f9 l'instrumentation \u00e9lectronique peut s'av\u00e9rer inutile ou peu pratique.<\/p>\r\n<p data-start=\"1427\" data-end=\"1598\">Le terme de d\u00e9bitm\u00e8tre \u00e0 rotam\u00e8tre est couramment utilis\u00e9 pour d\u00e9crire cette cat\u00e9gorie, la distinguant ainsi d'autres technologies de d\u00e9bit telles que les d\u00e9bitm\u00e8tres \u00e0 pression diff\u00e9rentielle ou les d\u00e9bitm\u00e8tres massiques.<\/p>\r\n\r\n\r\n<hr data-start=\"1600\" data-end=\"1603\" \/>\r\n\r\n<h2 data-start=\"1605\" data-end=\"1654\">Rotam\u00e8tre et d\u00e9bitm\u00e8tre : leur relation<\/h2>\r\n<p data-start=\"1656\" data-end=\"1860\">Lorsque l'on parle d'instrumentation de d\u00e9bit, les termes rotam\u00e8tre et d\u00e9bitm\u00e8tre apparaissent souvent ensemble. En effet, il s'agit d'un type sp\u00e9cifique de d\u00e9bitm\u00e8tre, class\u00e9 dans la cat\u00e9gorie des d\u00e9bitm\u00e8tres \u00e0 section variable.<\/p>\r\n<p data-start=\"1862\" data-end=\"2115\">Contrairement aux d\u00e9bitm\u00e8tres num\u00e9riques en ligne qui n\u00e9cessitent une alimentation \u00e9lectrique et un traitement du signal, un rotam\u00e8tre de d\u00e9bit fournit une indication visuelle directe du d\u00e9bit. Il est donc particuli\u00e8rement utile dans les applications o\u00f9 la simplicit\u00e9 et le retour d'information imm\u00e9diat sont des priorit\u00e9s.<\/p>\r\n\r\n\r\n<hr data-start=\"2117\" data-end=\"2120\" \/>\r\n\r\n<h2 data-start=\"2122\" data-end=\"2176\">Pourquoi la mesure de d\u00e9bit par rotam\u00e8tre est-elle encore largement utilis\u00e9e ?<\/h2>\r\n<p data-start=\"2178\" data-end=\"2241\">La mesure de d\u00e9bit par rotam\u00e8tre reste populaire pour plusieurs raisons :<\/p>\r\n\r\n<ul data-start=\"2243\" data-end=\"2397\">\r\n \t<li data-start=\"2243\" data-end=\"2273\">\r\n<p data-start=\"2245\" data-end=\"2273\">Aucune alimentation externe n'est n\u00e9cessaire<\/p>\r\n<\/li>\r\n \t<li data-start=\"2274\" data-end=\"2302\">\r\n<p data-start=\"2276\" data-end=\"2302\">Conception m\u00e9canique simple<\/p>\r\n<\/li>\r\n \t<li data-start=\"2303\" data-end=\"2339\">\r\n<p data-start=\"2305\" data-end=\"2339\">Indication visuelle imm\u00e9diate du d\u00e9bit<\/p>\r\n<\/li>\r\n \t<li data-start=\"2340\" data-end=\"2361\">\r\n<p data-start=\"2342\" data-end=\"2361\">Faible perte de charge<\/p>\r\n<\/li>\r\n \t<li data-start=\"2362\" data-end=\"2397\">\r\n<p data-start=\"2364\" data-end=\"2397\">Installation et fonctionnement faciles<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2399\" data-end=\"2572\">Dans de nombreux syst\u00e8mes auxiliaires, lignes d'\u00e9chantillonnage et processus utilitaires, l'indicateur fournit une pr\u00e9cision suffisante sans la complexit\u00e9 d'une instrumentation avanc\u00e9e.<\/p>\r\n\r\n\r\n<hr data-start=\"2574\" data-end=\"2577\" \/>\r\n\r\n<h2 data-start=\"2579\" data-end=\"2628\">Rotam\u00e8tre \u00e0 surface variable : Une classification de base<\/h2>\r\n<p data-start=\"2630\" data-end=\"2811\">Un rotam\u00e8tre \u00e0 surface variable se r\u00e9f\u00e8re au principe de fonctionnement selon lequel la surface d'\u00e9coulement change lorsque le flotteur se d\u00e9place. Cette conception permet \u00e0 l'instrument de s'ajuster automatiquement \u00e0 diff\u00e9rents d\u00e9bits.<\/p>\r\n<p data-start=\"2813\" data-end=\"3106\">Le concept de rotam\u00e8tre \u00e0 surface variable explique pourquoi ces instruments tol\u00e8rent les fluctuations de d\u00e9bit et sont faciles \u00e0 mettre \u00e0 l'\u00e9chelle pour diff\u00e9rentes plages de fonctionnement. C'est \u00e9galement la raison pour laquelle le terme de d\u00e9bitm\u00e8tre \u00e0 section variable \u00e0 rotam\u00e8tre est fr\u00e9quemment utilis\u00e9 dans la documentation technique et les sp\u00e9cifications d'achat.<\/p>\r\n\r\n\r\n<hr data-start=\"3108\" data-end=\"3111\" \/>\r\n\r\n<h2 data-start=\"3113\" data-end=\"3145\">Applications du rotam\u00e8tre \u00e0 liquide<\/h2>\r\n<p data-start=\"3147\" data-end=\"3365\">Un rotam\u00e8tre \u00e0 liquide est couramment utilis\u00e9 dans le traitement de l'eau, le dosage de produits chimiques, les circuits de refroidissement et les processus de laboratoire. Les liquides dont la viscosit\u00e9 est relativement stable et les conditions de propret\u00e9 sont id\u00e9ales pour ce type de mesure.<\/p>\r\n<p data-start=\"3367\" data-end=\"3648\">Dans ces applications, il fournit une indication coh\u00e9rente du d\u00e9bit sans n\u00e9cessiter de r\u00e9\u00e9talonnage ou de maintenance fr\u00e9quente. Les ing\u00e9nieurs choisissent souvent les d\u00e9bitm\u00e8tres rotam\u00e8tres pour les points de mesure secondaires o\u00f9 la visibilit\u00e9 des tendances est plus importante que l'enregistrement de donn\u00e9es de haute pr\u00e9cision.<\/p>\r\n\r\n\r\n<hr data-start=\"3650\" data-end=\"3653\" \/>\r\n\r\n<h2 data-start=\"3655\" data-end=\"3693\">Rotam\u00e8tre \u00e0 gaz dans les syst\u00e8mes industriels<\/h2>\r\n<p data-start=\"3695\" data-end=\"3938\">Un rotam\u00e8tre \u00e0 gaz est sp\u00e9cifiquement calibr\u00e9 pour des gaz tels que l'air, l'azote, l'oxyg\u00e8ne ou les gaz de traitement. La densit\u00e9 et la pression du gaz influen\u00e7ant consid\u00e9rablement les mesures, les rotam\u00e8tres \u00e0 gaz sont g\u00e9n\u00e9ralement con\u00e7us pour des conditions de fonctionnement d\u00e9finies.<\/p>\r\n<p data-start=\"3940\" data-end=\"3989\">La mesure de d\u00e9bit par rotam\u00e8tre \u00e0 gaz est largement utilis\u00e9e dans :<\/p>\r\n\r\n<ul data-start=\"3991\" data-end=\"4100\">\r\n \t<li data-start=\"3991\" data-end=\"4018\">\r\n<p data-start=\"3993\" data-end=\"4018\">Panneaux de distribution de gaz<\/p>\r\n<\/li>\r\n \t<li data-start=\"4019\" data-end=\"4039\">\r\n<p data-start=\"4021\" data-end=\"4039\">Syst\u00e8mes d'analyse<\/p>\r\n<\/li>\r\n \t<li data-start=\"4040\" data-end=\"4070\">\r\n<p data-start=\"4042\" data-end=\"4070\">Lignes de purge et de couverture<\/p>\r\n<\/li>\r\n \t<li data-start=\"4071\" data-end=\"4100\">\r\n<p data-start=\"4073\" data-end=\"4100\">Installations pilotes<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"4102\" data-end=\"4255\">La simplicit\u00e9 du rotam\u00e8tre \u00e0 gaz le rend adapt\u00e9 aux environnements o\u00f9 les capteurs \u00e9lectroniques peuvent \u00eatre sensibles \u00e0 la contamination ou aux variations de temp\u00e9rature.<\/p>\r\n\r\n\r\n<hr data-start=\"4257\" data-end=\"4260\" \/>\r\n\r\n<h2 data-start=\"4262\" data-end=\"4313\">Rotam\u00e8tre \u00e0 tube de verre et mod\u00e8les de rotam\u00e8tre en verre<\/h2>\r\n<p data-start=\"4315\" data-end=\"4532\">Un rotam\u00e8tre \u00e0 tube de verre, \u00e9galement connu sous le nom de rotam\u00e8tre en verre, est dot\u00e9 d'un tube conique transparent qui permet d'observer directement la position du flotteur. Cette conception offre une visibilit\u00e9 claire et une lecture simple de l'\u00e9chelle.<\/p>\r\n<p data-start=\"4534\" data-end=\"4584\">Les rotam\u00e8tres \u00e0 tube de verre sont couramment utilis\u00e9s dans :<\/p>\r\n\r\n<ul data-start=\"4586\" data-end=\"4651\">\r\n \t<li data-start=\"4586\" data-end=\"4602\">\r\n<p data-start=\"4588\" data-end=\"4602\">Laboratoires<\/p>\r\n<\/li>\r\n \t<li data-start=\"4603\" data-end=\"4627\">\r\n<p data-start=\"4605\" data-end=\"4627\">Syst\u00e8mes \u00e0 basse pression<\/p>\r\n<\/li>\r\n \t<li data-start=\"4628\" data-end=\"4651\">\r\n<p data-start=\"4630\" data-end=\"4651\">Nettoyer les supports de traitement<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"4653\" data-end=\"4839\">Bien que les instruments rotam\u00e8tres en verre soient visuellement intuitifs, ils sont g\u00e9n\u00e9ralement choisis pour des applications o\u00f9 la protection m\u00e9canique et la r\u00e9sistance \u00e0 la haute pression ne sont pas des pr\u00e9occupations essentielles.<\/p>\r\n\r\n\r\n<hr data-start=\"4841\" data-end=\"4844\" \/>\r\n\r\n<h2 data-start=\"4846\" data-end=\"4895\">Rotam\u00e8tre Indicateur de d\u00e9bit vs dispositif de mesure<\/h2>\r\n<p data-start=\"4897\" data-end=\"5086\">Dans de nombreux syst\u00e8mes, un rotam\u00e8tre est utilis\u00e9 principalement comme indicateur de d\u00e9bit plut\u00f4t que comme dispositif de mesure de haute pr\u00e9cision. Cette distinction est importante pour la s\u00e9lection d'une application correcte.<\/p>\r\n<p data-start=\"5088\" data-end=\"5283\">En tant qu'indicateur de d\u00e9bit, il confirme que le d\u00e9bit est pr\u00e9sent et qu'il se situe dans une plage acceptable. Pour les boucles de contr\u00f4le ou le transfert de garde, des technologies de d\u00e9bit plus avanc\u00e9es peuvent \u00eatre n\u00e9cessaires.<\/p>\r\n\r\n\r\n<hr data-start=\"5285\" data-end=\"5288\" \/>\r\n\r\n<h2 data-start=\"5290\" data-end=\"5342\">Consid\u00e9rations relatives \u00e0 l'\u00e9talonnage et \u00e0 la pr\u00e9cision du rotam\u00e8tre<\/h2>\r\n<p data-start=\"5344\" data-end=\"5589\">L'\u00e9talonnage des rotam\u00e8tres est g\u00e9n\u00e9ralement effectu\u00e9 dans des conditions de fluides sp\u00e9cifiques, notamment en termes de densit\u00e9, de viscosit\u00e9, de pression et de temp\u00e9rature. C'est pourquoi un rotam\u00e8tre est plus pr\u00e9cis lorsqu'il fonctionne dans les conditions pour lesquelles il a \u00e9t\u00e9 \u00e9talonn\u00e9.<\/p>\r\n<p data-start=\"5591\" data-end=\"5630\">Les principales consid\u00e9rations en mati\u00e8re d'\u00e9talonnage sont les suivantes :<\/p>\r\n\r\n<ul data-start=\"5632\" data-end=\"5735\">\r\n \t<li data-start=\"5632\" data-end=\"5662\">\r\n<p data-start=\"5634\" data-end=\"5662\">Type de fluide (liquide ou gaz)<\/p>\r\n<\/li>\r\n \t<li data-start=\"5663\" data-end=\"5701\">\r\n<p data-start=\"5665\" data-end=\"5701\">Pression et temp\u00e9rature de fonctionnement<\/p>\r\n<\/li>\r\n \t<li data-start=\"5702\" data-end=\"5735\">\r\n<p data-start=\"5704\" data-end=\"5735\">Changements de densit\u00e9 et de viscosit\u00e9<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"5737\" data-end=\"5872\">Comprendre les exigences d'\u00e9talonnage des rotam\u00e8tres permet d'\u00e9viter les erreurs d'interpr\u00e9tation des relev\u00e9s, en particulier dans les applications de rotam\u00e8tres \u00e0 gaz.<\/p>\r\n\r\n\r\n<hr data-start=\"5874\" data-end=\"5877\" \/>\r\n\r\n<h2 data-start=\"5879\" data-end=\"5930\">Rotam\u00e8tres D\u00e9bitm\u00e8tres dans les march\u00e9s publics industriels<\/h2>\r\n<p data-start=\"5932\" data-end=\"6137\">Du point de vue de l'approvisionnement, les d\u00e9bitm\u00e8tres rotam\u00e8tres sont appr\u00e9ci\u00e9s pour leur rentabilit\u00e9 et leur facilit\u00e9 de d\u00e9ploiement. Ils sont souvent sp\u00e9cifi\u00e9s comme instruments auxiliaires plut\u00f4t que comme dispositifs de contr\u00f4le primaires.<\/p>\r\n<p data-start=\"6139\" data-end=\"6202\">Dans les projets industriels, les rotam\u00e8tres sont souvent choisis pour.. :<\/p>\r\n\r\n<ul data-start=\"6204\" data-end=\"6290\">\r\n \t<li data-start=\"6204\" data-end=\"6234\">\r\n<p data-start=\"6206\" data-end=\"6234\">V\u00e9rification de la mise en service<\/p>\r\n<\/li>\r\n \t<li data-start=\"6235\" data-end=\"6263\">\r\n<p data-start=\"6237\" data-end=\"6263\">Confirmation visuelle du d\u00e9bit<\/p>\r\n<\/li>\r\n \t<li data-start=\"6264\" data-end=\"6290\">\r\n<p data-start=\"6266\" data-end=\"6290\">Indication du d\u00e9bit de secours<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"6292\" data-end=\"6398\">Cela explique pourquoi les sp\u00e9cifications des d\u00e9bitm\u00e8tres \u00e0 rotam\u00e8tre restent courantes dans les dessins techniques et les listes de nomenclatures.<\/p>\r\n\r\n\r\n<hr data-start=\"6400\" data-end=\"6403\" \/>\r\n\r\n<h2 data-start=\"6405\" data-end=\"6444\">Quand le rotam\u00e8tre est le bon choix<\/h2>\r\n<p data-start=\"6446\" data-end=\"6488\">Il est particuli\u00e8rement adapt\u00e9 lorsque :<\/p>\r\n\r\n<ul data-start=\"6490\" data-end=\"6650\">\r\n \t<li data-start=\"6490\" data-end=\"6528\">\r\n<p data-start=\"6492\" data-end=\"6528\">Une indication visuelle du d\u00e9bit est n\u00e9cessaire<\/p>\r\n<\/li>\r\n \t<li data-start=\"6529\" data-end=\"6562\">\r\n<p data-start=\"6531\" data-end=\"6562\">Les conditions du processus sont stables<\/p>\r\n<\/li>\r\n \t<li data-start=\"6563\" data-end=\"6609\">\r\n<p data-start=\"6565\" data-end=\"6609\">L'alimentation \u00e9lectrique n'est pas disponible ou n'est pas souhaitable<\/p>\r\n<\/li>\r\n \t<li data-start=\"6610\" data-end=\"6650\">\r\n<p data-start=\"6612\" data-end=\"6650\">La simplicit\u00e9 d'installation est importante<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"6652\" data-end=\"6755\">Dans ce cas, un rotam\u00e8tre \u00e0 surface variable offre un \u00e9quilibre pratique entre performance et simplicit\u00e9.<\/p>\r\n\r\n\r\n<hr data-start=\"6757\" data-end=\"6760\" \/>\r\n\r\n<h2 data-start=\"6762\" data-end=\"6788\">Limites \u00e0 prendre en compte<\/h2>\r\n<p data-start=\"6790\" data-end=\"6888\">Malgr\u00e9 ses avantages, il ne convient pas \u00e0 toutes les applications. Les limites peuvent \u00eatre les suivantes :<\/p>\r\n\r\n<ul data-start=\"6890\" data-end=\"7038\">\r\n \t<li data-start=\"6890\" data-end=\"6931\">\r\n<p data-start=\"6892\" data-end=\"6931\">Sensibilit\u00e9 aux changements de propri\u00e9t\u00e9s des fluides<\/p>\r\n<\/li>\r\n \t<li data-start=\"6932\" data-end=\"6985\">\r\n<p data-start=\"6934\" data-end=\"6985\">Pr\u00e9cision inf\u00e9rieure \u00e0 celle des d\u00e9bitm\u00e8tres \u00e9lectroniques<\/p>\r\n<\/li>\r\n \t<li data-start=\"6986\" data-end=\"7038\">\r\n<p data-start=\"6988\" data-end=\"7038\">Exigences en mati\u00e8re d'orientation (installation verticale)<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"7040\" data-end=\"7137\">La compr\u00e9hension de ces limites permet de s'assurer que la mesure du d\u00e9bit par rotam\u00e8tre est appliqu\u00e9e de mani\u00e8re appropri\u00e9e.<\/p>\r\n\r\n\r\n<hr data-start=\"7139\" data-end=\"7142\" \/>\r\n\r\n<h2 data-start=\"7144\" data-end=\"7157\">Conclusion<\/h2>\r\n<p data-start=\"7159\" data-end=\"7430\">Le rotam\u00e8tre reste un instrument pratique et fiable pour les surfaces variables. <strong><a href=\"https:\/\/instrava.com\/flowmeter\/\">mesure du d\u00e9bit<\/a><\/strong> dans un large \u00e9ventail d'industries. Qu'il soit utilis\u00e9 comme rotam\u00e8tre \u00e0 liquide, rotam\u00e8tre \u00e0 gaz ou rotam\u00e8tre \u00e0 tube de verre, sa valeur r\u00e9side dans sa simplicit\u00e9, sa visibilit\u00e9 et la fiabilit\u00e9 de ses performances.<\/p>\r\n<p data-start=\"7432\" data-end=\"7656\">\u00c0 une \u00e9poque o\u00f9 l'instrumentation est de plus en plus complexe, il continue de rappeler qu'une mesure efficace du d\u00e9bit ne n\u00e9cessite pas toujours une \u00e9lectronique de pointe, mais seulement une solution bien adapt\u00e9e \u00e0 l'application.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>A rotameter is one of the most widely used instruments for visual flow measurement in industrial processes. Despite the rapid development of digital and electronic flow technologies, it remains relevant due to its simplicity, reliability, and direct readability. In many industrial applications, engineers and operators still rely on a rotameter for fast flow indication, stable&#8230;<\/p>","protected":false},"author":1,"featured_media":31368,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[296],"tags":[600,506,623,610,621,624,580,622],"class_list":["post-31367","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-flow-meter","tag-guided-wave-radar-level-transmitter","tag-industrial-measurement-solutions","tag-industrial-process-control-instrumentation","tag-interface-level-radar-transmitter","tag-radar-level-measurement-algorithms","tag-radar-level-transmitter-technology","tag-safety-critical-measurement","tag-signal-stability-in-level-measurement"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is a Rotameter? 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