{"id":6498,"date":"2022-01-04T23:00:47","date_gmt":"2022-01-04T23:00:47","guid":{"rendered":"https:\/\/gasquip.com\/?p=6498"},"modified":"2022-01-05T14:38:52","modified_gmt":"2022-01-05T14:38:52","slug":"comment-tester-le-gaz-sf6","status":"publish","type":"post","link":"https:\/\/gasquip.com\/fr\/how-to-test-sf6-gas\/","title":{"rendered":"Comment tester le gaz SF6"},"content":{"rendered":"<p>Il est important de tester le gaz SF6 \u00e0 l&#039;int\u00e9rieur du GIE (Gas Insulated Equipment) car il assure la s\u00e9curit\u00e9 de l&#039;op\u00e9rateur et prot\u00e8ge l&#039;\u00e9quipement des dommages. Lorsqu&#039;un \u00e9chantillon de gaz SF6 est pr\u00e9lev\u00e9 sur un \u00e9quipement, il est compar\u00e9 aux sp\u00e9cifications du fabricant afin de v\u00e9rifier si le gaz et l&#039;\u00e9quipement se trouvent dans une plage de sant\u00e9 acceptable. Si vous ne savez pas si l&#039;\u00e9quipement contient ou non des contaminants, il est plus s\u00fbr de supposer que c&#039;est le cas. Tout \u00e9v\u00e9nement d&#039;arc (g\u00e9n\u00e9rant de la chaleur &gt; 380\u00b0F) cr\u00e9era des sous-produits, par cons\u00e9quent tous les op\u00e9rateurs travaillant sur le GIE qui a \u00e9t\u00e9 pr\u00e9c\u00e9demment install\u00e9 doivent suivre toutes les pr\u00e9cautions de s\u00e9curit\u00e9 recommand\u00e9es.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e9thodes de test du gaz SF6<\/h2>\n\n\n\n<p>Il existe trois m\u00e9thodes couramment utilis\u00e9es pour tester le gaz\u00a0: tests sur site \u00e0 l&#039;aide d&#039;un analyseur sur le terrain, analyse en laboratoire et surveillance en ligne. Sp\u00e9cifications du fabricant, <a href=\"https:\/\/www.epa.gov\/eps-partnership\"><strong>exigences gouvernementales\/organisationnelles<\/strong><\/a>, et d&#039;autres facteurs d\u00e9termineront la m\u00e9thode utilis\u00e9e. Chaque m\u00e9thode pr\u00e9sente diff\u00e9rents degr\u00e9s de pr\u00e9cision, d\u2019efficacit\u00e9 et de co\u00fbts, ce qui rend important le choix de la bonne m\u00e9thode. Pour les besoins de cet article, nous nous concentrerons sur l&#039;utilisation d&#039;un analyseur de niveau champ. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9viter les contaminants<\/h2>\n\n\n\n<p>Avant d\u2019aborder la mani\u00e8re d\u2019effectuer un test, il est important de prendre un peu de recul et d\u2019examiner comment g\u00e9rer correctement le SF6 analys\u00e9. N&#039;oubliez pas que la qualit\u00e9 des r\u00e9sultats de l&#039;analyse d\u00e9pend de l&#039;\u00e9chantillon que vous fournissez \u00e0 l&#039;appareil de mesure. \u00c9tant donn\u00e9 que presque tout ce avec quoi nous travaillons contient de l\u2019eau, l\u2019accent sera mis en grande partie sur l\u2019\u00e9vitement de ce contaminant.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/Sweaty-Palms-Pic-1.jpg\" alt=\"\" class=\"wp-image-6517\" width=\"276\" height=\"175\" srcset=\"https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/Sweaty-Palms-Pic-1.jpg 630w, https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/Sweaty-Palms-Pic-1-300x190.jpg 300w, https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/Sweaty-Palms-Pic-1-600x381.jpg 600w\" sizes=\"(max-width: 276px) 100vw, 276px\" \/><\/figure><\/div>\n\n\n\n<p>L\u2019utilisation des bons mat\u00e9riaux est essentielle pour obtenir un \u00e9chantillon d\u2019humidit\u00e9 pr\u00e9cis. D&#039;une mani\u00e8re g\u00e9n\u00e9rale, les mat\u00e9riaux normalement utilis\u00e9s pour manipuler le SF6 n&#039;ont pas d&#039;impact sur la puret\u00e9 ou sur l&#039;\u00e9chantillonnage des sous-produits de l&#039;arc. Bien qu&#039;il soit acceptable de manipuler du SF6 avec des pi\u00e8ces contenant du caoutchouc, telles que des tuyaux, il constitue une source majeure de contamination par l&#039;humidit\u00e9 pour les petits volumes de SF6 utilis\u00e9s pour l&#039;analyse et DOIT \u00eatre \u00e9vit\u00e9. Les tuyaux d&#039;\u00e9chantillonnage sont g\u00e9n\u00e9ralement fabriqu\u00e9s \u00e0 partir d&#039;un mat\u00e9riau de type t\u00e9flon avec des raccords en acier inoxydable. Il est \u00e9galement important que les r\u00e9gulateurs utilis\u00e9s contiennent des membranes en acier inoxydable, en Hastelloy ou en laiton. Certaines erreurs de manipulation courantes peuvent \u00e9galement avoir un impact n\u00e9gatif. Ceci comprend:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Mauvaise manipulation de l&#039;\u00e9quipement d&#039;\u00e9chantillonnage, des tuyaux et des raccords. La sueur des doigts de quelqu&#039;un qui p\u00e9n\u00e8tre sur la surface d&#039;un raccord peut provoquer une forte augmentation de l&#039;humidit\u00e9.<\/li><li>Une fuite sur un tuyau ou un raccord peut \u00e9galement introduire de l&#039;humidit\u00e9 dans un \u00e9chantillon. Sur certains appareils, cela peut \u00e9galement entra\u00eener une diminution de la puret\u00e9 du gaz.<\/li><li>Effectuer des tests lorsque les temp\u00e9ratures ambiantes sont trop basses peut conduire \u00e0 de fausses lectures de s\u00e9chage.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Avant de commencer, votre appareil fonctionne-t-il correctement\u00a0?<\/h2>\n\n\n\n<p>Qu&#039;il s&#039;agisse de consulter les brochures de nouveaux appareils ou d&#039;essayer de v\u00e9rifier que les unit\u00e9s existantes fonctionnent correctement, il est tr\u00e8s important de comprendre les sp\u00e9cifications de chaque type de capteur utilis\u00e9 par un analyseur. Les tol\u00e9rances pour chaque type indiquent ce qui est attendu lors d&#039;une mesure par rapport \u00e0 une valeur connue. Nos \u00ab valeurs connues \u00bb sont <a href=\"https:\/\/gasquip.com\/fr\/produit\/kit-de-gaz-detalonnage-pour-analyseur\/\"><strong>gaz certifi\u00e9s<\/strong><\/a> qui sont utilis\u00e9s pour v\u00e9rifier le bon fonctionnement des \u00e9quipements de test de toute nature. Il convient de noter que ces gaz ont \u00e9galement une tol\u00e9rance. Sur la plupart des certificats, vous verrez \u00ab\u00a0R\u00e9sultat(s) analytique(s)\u00a0\u00bb et + 2% \u00e0 10% du r\u00e9sultat affich\u00e9. Reportez-vous \u00e0 la fiche d&#039;exemple ci-dessous\u00a0:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image.png\" alt=\"Test Gaz SF6 - Certificat d&#039;Analyse\" class=\"wp-image-6499\" width=\"360\" height=\"461\" srcset=\"https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image.png 582w, https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-234x300.png 234w\" sizes=\"(max-width: 360px) 100vw, 360px\" \/><\/figure><\/div>\n\n\n\n<p>Examinons quelques exemples de tol\u00e9rances de capteur annonc\u00e9es et ce que devrait donner la lecture r\u00e9sultante sur l&#039;appareil lors d&#039;une mesure par rapport \u00e0 un gaz d&#039;\u00e9talonnage\u00a0:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/gasquip.com\/wp-content\/uploads\/2021\/09\/Analyzer-Calibration-Gas-Kit-1-1024x1024.jpg\" alt=\"Kit de gaz d&#039;\u00e9talonnage pour analyseur SF6\" class=\"wp-image-6087\" width=\"224\" height=\"224\" srcset=\"https:\/\/gasquip.com\/wp-content\/uploads\/2021\/09\/Analyzer-Calibration-Gas-Kit-1.jpg 1024w, https:\/\/gasquip.com\/wp-content\/uploads\/2021\/09\/Analyzer-Calibration-Gas-Kit-1-300x300.jpg 300w, https:\/\/gasquip.com\/wp-content\/uploads\/2021\/09\/Analyzer-Calibration-Gas-Kit-1-150x150.jpg 150w, https:\/\/gasquip.com\/wp-content\/uploads\/2021\/09\/Analyzer-Calibration-Gas-Kit-1-768x768.jpg 768w, https:\/\/gasquip.com\/wp-content\/uploads\/2021\/09\/Analyzer-Calibration-Gas-Kit-1-600x600.jpg 600w, https:\/\/gasquip.com\/wp-content\/uploads\/2021\/09\/Analyzer-Calibration-Gas-Kit-1-100x100.jpg 100w\" sizes=\"(max-width: 224px) 100vw, 224px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><strong><span style=\"color:#0d60b2\" class=\"has-inline-color\">Pourcentage de volume de gaz (%)<\/span><\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center\"><em><strong>Tol\u00e9rance annonc\u00e9e du capteur\u00a0:  <\/strong><span class=\"has-inline-color has-vivid-green-cyan-color\"><strong><em><u>+<\/u> 0.5%<\/em> <\/strong><\/span><\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Exemple d&#039;essai\u00a0:<\/strong> Bouteille de gaz d&#039;\u00e9talonnage certifi\u00e9e par un SF<sub>6<\/sub> Pourcentage volumique de 98,00 %. Les lectures sur l&#039;appareil doivent \u00eatre comprises entre 97,5% et 98,5%. Si les lectures sont en dehors de cette plage, votre capteur doit \u00eatre r\u00e9par\u00e9. <br><\/li><\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong><span style=\"color:#0d60b2\" class=\"has-inline-color\">Produits de d\u00e9composition (SO2, HF, CF4, H2S, CO, etc.) (ppmV)<\/span><\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center\"><em><strong>Tol\u00e9rance annonc\u00e9e du capteur\u00a0: <\/strong><span class=\"has-inline-color has-vivid-green-cyan-color\"><strong><u>+<\/u> Lecture pleine \u00e9chelle 2%, plage 0-500 ppmV<\/strong><\/span><\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Exemple d&#039;essai\u00a0:<\/strong> Bouteille de gaz d&#039;\u00e9talonnage certifi\u00e9e \u00e0 200 ppmv SO2. \u00c0 2% (sur 500), la tol\u00e9rance de votre capteur est de \u00b110 ppmV. Ainsi, si vous testez le capteur avec ce gaz d&#039;\u00e9talonnage et qu&#039;il ne lit pas entre 190 et 210 ppmV, le capteur est hors tol\u00e9rance. <\/li><\/ul>\n\n\n\n<p> <\/p>\n\n\n\n<p class=\"has-text-align-center\"><span style=\"color:#0d60b2\" class=\"has-inline-color\"><strong>H2O<\/strong> <strong>(Point de ros\u00e9e \u00b0C)<\/strong><\/span><\/p>\n\n\n\n<p class=\"has-text-align-center\"> <em><strong>Tol\u00e9rance annonc\u00e9e du capteur\u00a0:<\/strong>  <em><span class=\"has-inline-color has-vivid-green-cyan-color\"><strong><u>+<\/u><\/strong><\/span><\/em> <span class=\"has-inline-color has-vivid-green-cyan-color\"><strong>2\u00b0C avec une plage de -60\u00baC \u00e0 \u00b120\u00baC<\/strong><\/span><\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><span style=\"font-size: 1rem; font-weight: inherit;\"><strong>Exemple d&#039;essai\u00a0:<\/strong> Bouteille de gaz d&#039;\u00e9talonnage certifi\u00e9e \u00e0 -36\u00baC. Votre analyseur doit lire entre -34\u00baC et -38\u00baC. S&#039;il ne lit pas dans ces limites, le capteur est hors tol\u00e9rance. <\/span><br><br><br><strong>*Note<\/strong> que de nombreux analyseurs utilisent le ppmV au lieu du point de ros\u00e9e. Ces deux unit\u00e9s partagent une relation non lin\u00e9aire, et vous pouvez utiliser le graphique ci-dessous pour convertir entre les deux\u00a0:<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-1-1024x792.png\" alt=\"Test du gaz SF6 - ppmV au point de ros\u00e9e\" class=\"wp-image-6500\" width=\"585\" height=\"452\" srcset=\"https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-1-1024x792.png 1024w, https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-1-300x232.png 300w, https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-1-768x594.png 768w, https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-1-600x464.png 600w, https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-1.png 1118w\" sizes=\"(max-width: 585px) 100vw, 585px\" \/><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Tests au GIE<\/h2>\n\n\n\n<p>Une fois que vous avez confirm\u00e9 que votre analyseur fonctionne correctement, il est temps de vous connecter au compartiment gaz du GIE et d&#039;effectuer un test. Voici un extrait gratuit de notre <a href=\"https:\/\/gasquip.com\/fr\/formation-en-ligne-sf6\/\"><strong>la formation en ligne<\/strong><\/a> qui montre comment faire fonctionner correctement un analyseur SF6\u00a0: <\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Comment faire fonctionner un analyseur SF6\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/NWmxdEOykPA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Test d&#039;une bouteille de gaz SF6<\/h2>\n\n\n\n<p>Alors que les m\u00e9thodes de test de SF<sub>6<\/sub> Les cylindres et les disjoncteurs sont les m\u00eames, le comportement de l&#039;humidit\u00e9 dans chacun est radicalement diff\u00e9rent. Dans un disjoncteur, le gaz est toujours sous forme de vapeur, les lectures auront donc tendance \u00e0 \u00eatre assez stables et r\u00e9p\u00e9tables. Par contre, dans un cylindre, c\u2019est l\u2019inverse. Les bouteilles contiennent g\u00e9n\u00e9ralement du liquide et de la vapeur. La partie vapeur au-dessus du gaz liqu\u00e9fi\u00e9 est appel\u00e9e t\u00eate ou espace vapeur.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-5.png\" alt=\"\" class=\"wp-image-6519\" width=\"217\" height=\"217\" srcset=\"https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-5.png 308w, https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-5-300x300.png 300w, https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-5-150x150.png 150w, https:\/\/gasquip.com\/wp-content\/uploads\/2022\/01\/image-5-100x100.png 100w\" sizes=\"(max-width: 217px) 100vw, 217px\" \/><\/figure><\/div>\n\n\n\n<p>L\u2019humidit\u00e9 a tendance \u00e0 rester dans l\u2019espace libre \u00e0 l\u2019int\u00e9rieur des bouteilles. C&#039;est la raison principale pour laquelle il existe deux normes diff\u00e9rentes pour le SF6 en bouteilles, une pour le liquide (ASTM) et une autre pour les phases vapeur (CIGRE). Les appareils sur le terrain ne peuvent pas tester \u00e0 partir de la phase liquide, c&#039;est pourquoi les normes s&#039;appliquant \u00e0 l&#039;espace libre doivent \u00eatre utilis\u00e9es.<\/p>\n\n\n\n<p>Lors du test de l\u2019espace vapeur, le premier test sera normalement le plus humide. Chaque test effectu\u00e9 ensuite en s\u00e9quence sera plus sec \u00e0 chaque test. Cela se produit pour deux raisons\u00a0: 1) SF sec<sub>6<\/sub> vaporise et dilue les niveaux d\u2019humidit\u00e9. 2) une \u00e9norme perte d&#039;\u00e9nergie se produit lorsque SF<sub>6<\/sub> se vaporise, provoquant une chute de temp\u00e9rature qui fait que l&#039;humidit\u00e9 se condense puis g\u00e8le.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conseils g\u00e9n\u00e9raux<\/h2>\n\n\n\n<p><strong>Analyseurs de gaz avec syst\u00e8mes de pompage\u00a0:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>La fonction de pompage ne fonctionne que jusqu&#039;\u00e0 un maximum de 145 psig<\/li><li>Il ne peut pas \u00eatre r\u00e9inject\u00e9 dans des cylindres contenant du SF6 liqu\u00e9fi\u00e9.<\/li><li>Les r\u00e9gulateurs n\u2019autorisent l\u2019\u00e9coulement du gaz que dans un sens. Il n&#039;est pas possible de pomper \u00e0 travers un r\u00e9gulateur.<\/li><li>Avant de r\u00e9injecter le gaz \u00e9chantillon dans un disjoncteur, assurez-vous qu\u2019aucun test suppl\u00e9mentaire n\u2019est n\u00e9cessaire ce jour-l\u00e0. Un nouveau test du SF6 apr\u00e8s un retour de pompe entra\u00eenera une lecture d&#039;humidit\u00e9 incorrecte, normalement une forte augmentation. Ce n\u2019est qu\u2019une petite quantit\u00e9 d\u2019humidit\u00e9 introduite, mais il faut du temps pour que le gaz se r\u00e9homog\u00e9n\u00e9ise. Attendez au moins 24 heures.<\/li><li>Les analyseurs avec fonction de pompage contiennent 2 \u00e0 3 \u00e9chantillons. Si des tests suppl\u00e9mentaires sont n\u00e9cessaires sur le m\u00eame volume de gaz, disposez d&#039;un sac de r\u00e9cup\u00e9ration de gaz dans lequel vider l&#039;appareil avant de pomper \u00e0 nouveau.<\/li><\/ul>\n\n\n\n<p><strong>Autres remarques g\u00e9n\u00e9rales\u00a0:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>N&#039;utilisez pas de Loctite\/produit d&#039;\u00e9tanch\u00e9it\u00e9 liquide pour filetage sur les raccords utilis\u00e9s pour l&#039;\u00e9chantillonnage du SF6. Les d\u00e9gagements de gaz chimiques peuvent encrasser l&#039;\u00e9quipement de test.<\/li><li>Il est normal que les valeurs d&#039;humidit\u00e9 diminuent sur les cylindres lors de la r\u00e9alisation de plusieurs tests cons\u00e9cutifs. Ceci est d\u00fb au refroidissement du gaz pendant la vaporisation et au gaz tr\u00e8s sec entrant dans l\u2019espace vapeur.<\/li><li>Assurez-vous toujours que votre appareil est charg\u00e9 avant de vous rendre sur un chantier. <br><br><br><strong>Confus? Besoin de mat\u00e9riel, de formation ou de conseils ? Contactez-nous \u00e0 <a href=\"mailto:sales@gasquip.com\">sales@gasquip.com<\/a> pour que nous puissions vous aider !<\/strong><\/li><\/ul>","protected":false},"excerpt":{"rendered":"<p>It&#8217;s important to test SF6 gas inside GIE (Gas Insulated Equipment) because it ensures the safety of the operator and protects the equipment from damage. When an SF6 gas sample is taken from a piece of equipment, it is compared against the manufacturers specifications in order to verify if the gas and the equipment is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6505,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[19,79],"tags":[],"class_list":["post-6498","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","category-learning"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Test SF6 Gas<\/title>\n<meta name=\"description\" content=\"It&#039;s important to test SF6 gas inside GIE (Gas Insulated Equipment) because it ensures the safety of the operator and equipment.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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