{"id":4665,"date":"2019-10-16T11:43:19","date_gmt":"2019-10-16T09:43:19","guid":{"rendered":"https:\/\/soclema.com\/?p=4665"},"modified":"2019-11-27T11:17:01","modified_gmt":"2019-11-27T10:17:01","slug":"longueur-canne-de-prelevement","status":"publish","type":"post","link":"https:\/\/soclema.com\/les-actualites\/2019\/10\/16\/longueur-canne-de-prelevement\/","title":{"rendered":"A quelle profondeur ins\u00e9rer une canne de pr\u00e9l\u00e8vement?"},"content":{"rendered":"<p><strong>A quelle profondeur faut-il ins\u00e9rer une canne de pr\u00e9l\u00e8vement dans une canalisation ?<br \/>\n<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Dans l\u2019industrie, la pratique voulait et veut parfois encore que l\u2019extr\u00e9mit\u00e9 de la canne soit ins\u00e9r\u00e9e jusqu&#8217;au deuxi\u00e8me tiers de la canalisation.<\/p>\n<p>Il est vrai que l\u2019extr\u00e9mit\u00e9 de la canne doit \u00eatre suffisamment \u00e9loign\u00e9e de la paroi pour que la membrane soit dans le flux de gaz et pour \u00e9viter qu\u2019elle soit en contact avec les liquides \u00e9ventuellement pr\u00e9sents le long de la paroi.<\/p>\n<p>N\u00e9anmoins, il est \u00e9galement indispensable de limiter la longueur de canne \u00e0 l\u2019int\u00e9rieur de la canalisation pour \u00e9viter tout d\u00e9faillance li\u00e9e aux ph\u00e9nom\u00e8nes vibratoires.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4703 alignleft\" src=\"https:\/\/soclema.com\/wp-content\/uploads\/2019\/10\/soclema_longueur-insertion-canne-400x300.jpg\" alt=\"\" width=\"204\" height=\"153\" \/>La norme GPA 2166 pr\u00e9cise que <strong>les cannes ne doivent en aucun cas \u00eatre ins\u00e9r\u00e9es \u00e0 plus de 25 cm<\/strong> (10 pouces).<\/p>\n<h3>SOCLEMA et A+ Corporation recommandent vivement de ne pas les ins\u00e9rer \u00e0 plus de <strong>3-5&#8243; (environ 10 cm). <\/strong>Cela n\u2019est pas n\u00e9cessaire, et plus la canne est ins\u00e9r\u00e9e dans la canalisation, plus elle sera sujette aux vibrations.<\/h3>\n<p>Des tests ont \u00e9t\u00e9 r\u00e9alis\u00e9s par l\u2019Institut de Recherche du Gaz aux Etats-Unis pour voir l\u2019incidence de la longueur d\u2019insertion sur la densit\u00e9 du gaz et la valeur \u00e9nerg\u00e9tique. Des \u00e9chantillons ont \u00e9t\u00e9 pr\u00e9lev\u00e9s \u00e0 diff\u00e9rents endroits dans la canalisation. Les tests n\u2019ont pas r\u00e9v\u00e9l\u00e9 de diff\u00e9rence significative sur la densit\u00e9 ou la valeur \u00e9nerg\u00e9tique de l\u2019\u00e9chantillon.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A quelle profondeur faut-il ins\u00e9rer une canne de pr\u00e9l\u00e8vement dans une canalisation ? &nbsp; Dans l\u2019industrie, la pratique voulait et veut parfois encore que l\u2019extr\u00e9mit\u00e9 de la canne soit ins\u00e9r\u00e9e jusqu&#8217;au deuxi\u00e8me tiers de la canalisation. Il est vrai que l\u2019extr\u00e9mit\u00e9 de la canne doit \u00eatre suffisamment \u00e9loign\u00e9e de la paroi pour que la membrane [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":4673,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-4665","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A quelle profondeur ins\u00e9rer une canne de pr\u00e9l\u00e8vement? - Soclema<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/soclema.com\/les-actualites\/2019\/10\/16\/longueur-canne-de-prelevement\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A quelle profondeur ins\u00e9rer une canne de pr\u00e9l\u00e8vement? - Soclema\" \/>\n<meta property=\"og:description\" content=\"A quelle profondeur faut-il ins\u00e9rer une canne de pr\u00e9l\u00e8vement dans une canalisation ? &nbsp; Dans l\u2019industrie, la pratique voulait et veut parfois encore que l\u2019extr\u00e9mit\u00e9 de la canne soit ins\u00e9r\u00e9e jusqu&#8217;au deuxi\u00e8me tiers de la canalisation. 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