{"id":8326,"date":"2026-04-17T12:37:51","date_gmt":"2026-04-17T12:37:51","guid":{"rendered":"https:\/\/ultrasuonindt.it\/ce-quest-le-mode-pect-et-quand-il-devient-indispensable-en-mesure-de-corrosion\/"},"modified":"2026-10-01T17:36:06","modified_gmt":"2026-10-01T17:36:06","slug":"ce-quest-le-mode-pect-et-quand-il-devient-indispensable-en-mesure-de-corrosion","status":"publish","type":"post","link":"https:\/\/ultrasuonindt.it\/fr\/ce-quest-le-mode-pect-et-quand-il-devient-indispensable-en-mesure-de-corrosion\/","title":{"rendered":"Ce qu&rsquo;est le mode PECT et quand il devient indispensable en mesure de corrosion"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Parmi les modes de mesure disponibles sur les appareils Dakota NDT de la s\u00e9rie CMX, le mode <strong>PECT (Pulse-Echo Coating Through)<\/strong> est souvent le moins connu mais l&rsquo;un des plus utiles dans les applications industrielles complexes. Son r\u00f4le est de permettre la <strong>mesure simultan\u00e9e de l&rsquo;\u00e9paisseur du rev\u00eatement et du mat\u00e9riau sous-jacent<\/strong> en un seul relev\u00e9, fournissant une double information que les autres modes ne peuvent pas donner. <\/p>\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"627\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx_10_display_dettaglio_tracciabilita.jpg?resize=1200%2C627&#038;ssl=1\" alt=\"Appareil Dakota CMX en mode PECT\" class=\"wp-image-255\" style=\"width:600px\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx_10_display_dettaglio_tracciabilita.jpg?w=1200&amp;ssl=1 1200w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx_10_display_dettaglio_tracciabilita.jpg?resize=300%2C157&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx_10_display_dettaglio_tracciabilita.jpg?resize=1024%2C535&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx_10_display_dettaglio_tracciabilita.jpg?resize=768%2C401&amp;ssl=1 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n<h2 class=\"wp-block-heading\">Le panorama des modes de mesure CMX<\/h2>\n\n<p class=\"wp-block-paragraph\">D&rsquo;apr\u00e8s la fiche officielle Dakota de la s\u00e9rie CMX (CMX1-DL, CMX2-DL, CMX3-DL, CMX10-DL), les modes de mesure disponibles sont :<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>PE (Pulse-Echo)<\/strong> : mode standard, mesure le total (rev\u00eatement compris s&rsquo;il y en a un)<\/li>\n<li><strong>EE (Echo-Echo \/ ThruPaint\u2122)<\/strong> : ignore le rev\u00eatement jusqu&rsquo;\u00e0 2 mm, ne mesure que le m\u00e9tal<\/li>\n<li><strong>PETP (Pulse-Echo Temperature Compensation)<\/strong> : compense automatiquement les variations de temp\u00e9rature pendant la mesure<\/li>\n<li><strong>CT (Coating Only Mode)<\/strong> : mesure uniquement l&rsquo;\u00e9paisseur du rev\u00eatement<\/li>\n<li><strong>PECT (Pulse-Echo Coating Through)<\/strong> : mesure simultan\u00e9ment le rev\u00eatement <strong>et<\/strong> le m\u00e9tal sous-jacent en un seul relev\u00e9<\/li>\n<\/ul>\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-cover is-light popmake-4066 popmake-739\" style=\"border-width:1px;min-height:250px;aspect-ratio:unset;\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"250\" class=\"wp-block-cover__image-background wp-image-727 size-full\" alt=\"\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=1200%2C250&#038;ssl=1\" data-object-fit=\"cover\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?w=1200&amp;ssl=1 1200w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=300%2C63&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=1024%2C213&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=768%2C160&amp;ssl=1 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-30 has-background-dim\" style=\"background-color:#d3d6dc\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-15701bb7 wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-right has-ti-fg-color is-style-default has-luminous-vivid-amber-color has-text-color has-link-color wp-elements-1 wp-block-paragraph\" style=\"font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.374), 35px);\"><strong>Besoin d&rsquo;aide pour choisir le produit adapt\u00e9 ?<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-right is-layout-flex wp-container-core-buttons-is-layout-b507c051 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button popmake-4066 popmake-739\"><a class=\"wp-block-button__link has-ti-accent-color has-cyan-bluish-gray-background-color has-text-color has-background has-link-color wp-element-button\">Contactez-nous<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h2 class=\"wp-block-heading\">Ce qu&rsquo;est le mode PECT<\/h2>\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1115\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx10_display_dettaglio_forme_onda_ultrasuoni.jpg?resize=1920%2C1115&#038;ssl=1\" alt=\"Mode PECT sur l'&#xE9;cran du Dakota CMX\" class=\"wp-image-254\" style=\"width:500px\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx10_display_dettaglio_forme_onda_ultrasuoni.jpg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx10_display_dettaglio_forme_onda_ultrasuoni.jpg?resize=300%2C174&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx10_display_dettaglio_forme_onda_ultrasuoni.jpg?resize=1024%2C595&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx10_display_dettaglio_forme_onda_ultrasuoni.jpg?resize=768%2C446&amp;ssl=1 768w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_cmx10_display_dettaglio_forme_onda_ultrasuoni.jpg?resize=1536%2C892&amp;ssl=1 1536w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n<p class=\"wp-block-paragraph\">Le mode PECT exploite la diff\u00e9rence de vitesse du son dans le rev\u00eatement et dans le m\u00e9tal pour s\u00e9parer les deux contributions au sein d&rsquo;une seule mesure. L&rsquo;appareil analyse la s\u00e9quence d&rsquo;\u00e9chos : l&rsquo;\u00e9cho de l&rsquo;interface rev\u00eatement-m\u00e9tal et l&rsquo;\u00e9cho de paroi arri\u00e8re. \u00c0 partir des \u00e9carts temporels entre les \u00e9chos, il calcule s\u00e9par\u00e9ment :  <\/p>\n\n<ul class=\"wp-block-list\">\n<li>l&rsquo;<strong>\u00e9paisseur du rev\u00eatement<\/strong> (g\u00e9n\u00e9ralement peinture, \u00e9poxy)<\/li>\n<li>l&rsquo;<strong>\u00e9paisseur du m\u00e9tal<\/strong> sous-jacent<\/li>\n<li>et simultan\u00e9ment les \u00e9ventuels <strong>d\u00e9fauts interm\u00e9diaires<\/strong> tels que piq\u00fbres, d\u00e9laminations, inclusions<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Sur la fiche officielle Dakota, la s\u00e9rie CMX est pr\u00e9sent\u00e9e comme capable de \u00ab measure coatings and material thickness simultaneously while maintaining the ability to locate pits, flaws and defects in the material \u00bb.<\/p>\n\n<h2 class=\"wp-block-heading\">Quand le mode PECT est indispensable<\/h2>\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"627\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-applicazione_cmx10_dettaglio_misura_su_tubi_e_serbatoi.jpg?resize=1200%2C627&#038;ssl=1\" alt=\"Mesure PECT sur tubes rev&#xEA;tus avec corrosion\" class=\"wp-image-257\" style=\"width:500px\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-applicazione_cmx10_dettaglio_misura_su_tubi_e_serbatoi.jpg?w=1200&amp;ssl=1 1200w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-applicazione_cmx10_dettaglio_misura_su_tubi_e_serbatoi.jpg?resize=300%2C157&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-applicazione_cmx10_dettaglio_misura_su_tubi_e_serbatoi.jpg?resize=1024%2C535&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-applicazione_cmx10_dettaglio_misura_su_tubi_e_serbatoi.jpg?resize=768%2C401&amp;ssl=1 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n<p class=\"wp-block-paragraph\">Le mode PECT est pr\u00e9f\u00e9rable, voire indispensable, dans les cas suivants :<\/p>\n\n<h3 class=\"wp-block-heading\">Inspection de corrosion sous rev\u00eatement<\/h3>\n\n<p class=\"wp-block-paragraph\">Sur des tuyauteries ou des r\u00e9servoirs dot\u00e9s d&rsquo;un rev\u00eatement de protection, il importe de savoir en m\u00eame temps :<\/p>\n\n<ul class=\"wp-block-list\">\n<li>si le rev\u00eatement est intact (\u00e9paisseur conforme)<\/li>\n<li>si le m\u00e9tal sous le rev\u00eatement a subi une corrosion<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Sans PECT il faudrait deux mesures distinctes (CT pour le rev\u00eatement et EE pour le m\u00e9tal) ; avec PECT, un seul relev\u00e9 fournit les deux informations.<\/p>\n\n<h3 class=\"wp-block-heading\">Surveillance des piq\u00fbres sous rev\u00eatement<\/h3>\n\n<p class=\"wp-block-paragraph\">Les piq\u00fbres localis\u00e9es sous un rev\u00eatement sont difficiles \u00e0 d\u00e9tecter : le mode PECT permet de rep\u00e9rer d&#8217;embl\u00e9e tout \u00e9cho anormal dans la zone du m\u00e9tal, signalant des d\u00e9fauts localis\u00e9s qui passeraient inaper\u00e7us dans les autres modes.<\/p>\n\n<h3 class=\"wp-block-heading\">V\u00e9rification de la protection active<\/h3>\n\n<p class=\"wp-block-paragraph\">Lorsque la maintenance des surfaces rev\u00eatues exige de v\u00e9rifier \u00e0 la fois l&rsquo;\u00e9tat du rev\u00eatement (d\u00e9gradation, vieillissement, d\u00e9collement) et celui du m\u00e9tal, le mode PECT donne un tableau complet pour d\u00e9cider s&rsquo;il faut reprendre le rev\u00eatement ou si le probl\u00e8me est plus grave (corrosion active sous une peinture intacte).<\/p>\n\n<h3 class=\"wp-block-heading\">Inspection de cuves et de bouteilles rev\u00eatues<\/h3>\n\n<p class=\"wp-block-paragraph\">Beaucoup de cuves de stockage chimique comportent un rev\u00eatement int\u00e9rieur en r\u00e9sine pour la protection chimique. Le mode PECT est utile pour v\u00e9rifier simultan\u00e9ment : <\/p>\n\n<ul class=\"wp-block-list\">\n<li>l&rsquo;int\u00e9grit\u00e9 et l&rsquo;\u00e9paisseur du rev\u00eatement int\u00e9rieur de protection<\/li>\n<li>l&rsquo;\u00e9paisseur r\u00e9siduelle de la robe en acier<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Quand le mode PECT n&rsquo;est pas n\u00e9cessaire<\/h2>\n\n<p class=\"wp-block-paragraph\">Le mode PECT n&rsquo;est pas toujours utile. Dans certains cas, un mode plus simple suffit : <\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Surfaces m\u00e9talliques nues<\/strong> : utiliser le Pulse-Echo standard<\/li>\n<li><strong>Seul le m\u00e9tal importe<\/strong> (pas le rev\u00eatement) : utiliser Echo-Echo ThruPaint\u2122<\/li>\n<li><strong>Seul le rev\u00eatement importe<\/strong> : utiliser le Coating Only Mode (CT)<\/li>\n<li><strong>Appareils hors s\u00e9rie CMX<\/strong> : sur les mod\u00e8les CX, ZX et MX, PECT n&rsquo;est pas disponible, mais ThruPaint\u2122 couvre la plupart des cas pratiques<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Appareils Dakota qui prennent en charge PECT<\/h2>\n\n<p class=\"wp-block-paragraph\">D&rsquo;apr\u00e8s les sp\u00e9cifications officielles, le mode PECT est disponible sur les appareils Dakota suivants :<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/epaisseurmetres\/dakota-cmx-series-mesureurs-de-corrosion-avec-a-scan\/\">Dakota CMX1-DL, CMX2-DL, CMX3-DL<\/a><\/strong> : la s\u00e9rie CMX avec A-Scan<\/li>\n<li><strong><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/epaisseurmetres\/dakota-cmx10-dl-epaisseurmetre-corrosion-haut-de-gamme\/\">Dakota CMX10-DL<\/a><\/strong> : haut de gamme avec Full Wave Capture<\/li>\n<li>les d\u00e9tecteurs de d\u00e9fauts FX70-DL \/ FX71-DL \/ FX81-DL : ils int\u00e8grent des modes avanc\u00e9s qui couvrent les fonctionnalit\u00e9s PECT dans le cadre de la d\u00e9tection de d\u00e9fauts<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Pr\u00e9cautions dans l&rsquo;usage pratique<\/h2>\n\n<ul class=\"wp-block-list\">\n<li><strong>Calibrage sp\u00e9cifique<\/strong> : le mode PECT exige de saisir la vitesse du son du rev\u00eatement comme celle du m\u00e9tal<\/li>\n<li><strong>Qualit\u00e9 du rev\u00eatement<\/strong> : des rev\u00eatements d\u00e9grad\u00e9s, cloqu\u00e9s ou d\u00e9lamin\u00e9s peuvent donner des \u00e9chos confus<\/li>\n<li><strong>Limite d&rsquo;\u00e9paisseur du rev\u00eatement<\/strong> : se reporter aux sp\u00e9cifications de l&rsquo;appareil pour la limite sup\u00e9rieure du rev\u00eatement mesurable<\/li>\n<li><strong>Interpr\u00e9tation avec l&rsquo;A-Scan<\/strong> : en mode PECT, il est toujours recommand\u00e9 de v\u00e9rifier le signal en A-Scan pour avoir la confirmation visuelle que les \u00e9chos sont corrects<\/li>\n<\/ul>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n<p class=\"wp-block-paragraph\">Pour approfondir les applications du mode PECT et choisir l&rsquo;appareil CMX le mieux adapt\u00e9, <a href=\"https:\/\/ultrasuonindt.it\/fr\/contacts\/\">contactez notre bureau technique<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le mode PECT (Pulse-Echo Coating Through) des appareils Dakota CMX mesure en un seul relev\u00e9 l&rsquo;\u00e9paisseur du rev\u00eatement et celle du m\u00e9tal sous-jacent, tout en conservant la capacit\u00e9 de d\u00e9tecter piq\u00fbres et d\u00e9fauts. Essentiel pour les inspections de corrosion sous rev\u00eatement, de cuves et de tuyauteries prot\u00e9g\u00e9es. <\/p>\n","protected":false},"author":157040980,"featured_media":8327,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"{title}\n\n{excerpt}\n\n{url}","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[66],"tags":[71,70,69,68,67,90],"class_list":["post-8326","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides-techniques-cnd","tag-controles-cnd-oil-gas","tag-mesure-depaisseur-sur-acier-au-carbone","tag-mesure-de-corrosion-par-ultrasons","tag-mesure-echo-echo-thrupaint-a-travers-la-peinture","tag-mesure-pulse-echo-par-ultrasons","tag-mode-pect-pour-la-mesure-de-corrosion"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mode PECT Mesure de Corrosion Dakota CMX | RODER<\/title>\n<meta name=\"description\" content=\"Mode PECT (Pulse-Echo Coating Through) Dakota CMX : mesure simultan\u00e9e du rev\u00eatement et du m\u00e9tal. 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