{"id":25256,"date":"2026-07-07T15:40:19","date_gmt":"2026-07-07T13:40:19","guid":{"rendered":"https:\/\/roder.it\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/"},"modified":"2026-10-02T14:15:19","modified_gmt":"2026-10-02T12:15:19","slug":"thickness-gauging-for-corrosion-monitoring","status":"publish","type":"page","link":"https:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/","title":{"rendered":"Thickness gauging for corrosion monitoring"},"content":{"rendered":"\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-61d584a3 wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-ba02fbf7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:40%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/01\/zx-corrosion-thickness-gauges.jpg\" alt=\"Ultrasonic thickness gauging for corrosion monitoring\" style=\"border-width:1px;border-top-left-radius:20px;border-top-right-radius:20px;border-bottom-left-radius:20px;border-bottom-right-radius:20px\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<p class=\"has-text-color has-background wp-block-paragraph\" style=\"border-radius:0px 6px 6px 0px;border-left-color:var(--wp--preset--color--ti-accent);border-left-style:solid;border-left-width:5px;color:#1A5276;background-color:#ebf1f4;padding-top:14px;padding-right:16px;padding-bottom:14px;padding-left:16px;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.769), 20px);font-style:italic\"><strong>Ultrasonic thickness gauging<\/strong> is the most widely used technique for <strong>corrosion monitoring<\/strong>: it measures the remaining wall thickness of metal from one side only, without cutting or dismantling the component.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list is-style-checkbox has-ti-accent-color has-text-color has-link-color wp-elements-1\">\n<li><strong>Non-destructive measurement:<\/strong> remaining thickness from one side only<\/li>\n\n\n\n<li><strong>Pulse-echo method:<\/strong> dual element transducer<\/li>\n\n\n\n<li><strong>Wide range:<\/strong> from less than 1 mm to over 900 mm<\/li>\n\n\n\n<li><strong>Through coatings:<\/strong> echo-echo (thru-paint) mode<\/li>\n\n\n\n<li><strong>Data logging:<\/strong> thickness maps and trend analysis<\/li>\n\n\n\n<li><strong>Industries:<\/strong> oil &amp; gas, energy, infrastructure, pipelines<\/li>\n\n\n\n<li><strong>Repeatable over time:<\/strong> comparison between successive inspections<\/li>\n\n\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Corrosion control consists of verifying that the thickness of a wall (pipe, tank, hull, boiler) does not fall below the minimum safe value. Ultrasonic thickness gauging obtains this measurement in a <strong>non-destructive<\/strong>, fast and repeatable way, accessing the structure from one side only. <\/p>\n\n<p class=\"wp-block-paragraph\">Compared with radiographic methods or direct measurement after dismantling, the UT technique is economical, portable and suited both to periodic field inspections and to systematic monitoring of thousands of points.<\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-cover is-light popmake-11245\" style=\"border-width:1px;border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-left-radius:10px;border-bottom-right-radius:10px;min-height:250px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"213\" class=\"wp-block-cover__image-background wp-image-14896 size-large\" alt=\"banner aiuto nella scelta dello strumento oppure della tecnologia\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-1024x213.png\" data-object-fit=\"cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-1024x213.png 1024w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-300x63.png 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-768x160.png 768w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#d3d6dc\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-a304f9a9 wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-right has-ti-fg-color has-text-color has-link-color wp-elements-2 wp-block-paragraph\" style=\"font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.726), 35px);\"><strong>Would you like help choosing the right product ?<\/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\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/roder.it\/en\/contacts\/\">Click here !<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h2 id=\"principio\" class=\"wp-block-heading has-ti-accent-color has-text-color\">How ultrasonic thickness measurement works<\/h2>\n\n<p class=\"wp-block-paragraph\">An ultrasonic thickness gauge emits a short high-frequency acoustic pulse that travels through the material, reflects off the opposite wall and returns to the transducer. The instrument measures the <strong>time of flight<\/strong> of the echo and, knowing the speed of sound in the material, calculates the thickness using the relation s = v \u00d7 t \/ 2. <\/p>\n\n<p class=\"wp-block-paragraph\">For corrosion monitoring, <strong>dual element transducers<\/strong> are used (one element transmits, one receives): they are ideal on irregular, rusty or high-temperature surfaces, because they tolerate poor couplant quality and corroded inner walls better. A thin layer of couplant gel ensures the transmission of ultrasound between probe and material. <\/p>\n\n<p class=\"wp-block-paragraph\">Typical resolution is 0.01 mm and the measuring range extends from fractions of a millimetre up to several hundred millimetres, depending on the material and the probe frequency.<\/p>\n\n<h2 id=\"vantaggi\" class=\"wp-block-heading has-ti-accent-color has-text-color\">Why it is ideal for corrosion monitoring<\/h2>\n\n<p class=\"wp-block-paragraph\">Corrosion reduces thickness from the inside or beneath coatings, often at points that cannot be seen. This is exactly where UT measurement comes in: it detects the remaining wall loss <strong>before<\/strong> it becomes a leak or a structural failure. <\/p>\n\n<ul class=\"wp-block-list is-style-checkbox has-ti-accent-color has-text-color has-link-color wp-elements-3\">\n<li><strong>Access from one side only<\/strong>: there is no need to reach the inside of the pipe or tank.<\/li>\n\n<li><strong>Speed<\/strong>: hundreds of points per shift, with immediate readings.<\/li>\n\n<li><strong>Scan mode<\/strong>: automatically shows the minimum thickness along a path, to locate pitting.<\/li>\n\n<li><strong>Trends over time<\/strong>: with the data logger, successive inspections are compared and the corrosion rate and remaining life are estimated.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">These features make UT thickness gauging the reference tool in <strong>preventive maintenance<\/strong> and <em>integrity management<\/em> programmes for plants and infrastructure.<\/p>\n\n<h2 id=\"thru-paint\" class=\"wp-block-heading has-ti-accent-color has-text-color\">Measuring through coatings<\/h2>\n\n<p class=\"wp-block-paragraph\">Many surfaces are painted or coated. <strong>Echo-Echo (thru-paint)<\/strong> mode measures the time between two successive echoes coming from the base metal, excluding the thickness of the coating: this gives the true metal thickness <strong>without removing the paint<\/strong>. It is a valuable function, as the surface does not have to be prepared at every measuring point.  <\/p>\n\n<h2 id=\"scelta\" class=\"wp-block-heading has-ti-accent-color has-text-color\">How to choose a thickness gauge for corrosion<\/h2>\n\n<p class=\"wp-block-paragraph\">The main criteria are the <strong>measuring range<\/strong> and resolution, the presence of a <strong>data logger<\/strong> for recording and downloading data, the availability of <strong>thru-paint<\/strong> mode and high-speed scanning, and the robustness of the instrument for field use.<\/p>\n\n<p class=\"wp-block-paragraph\">The Dakota NDT range distributed by RODER covers these needs, from the ZX series (basic and with data logger) up to the CMX and MX series with A-Scan and B-Scan display: for technical details and models, please refer to the catalogue pages below.<\/p>\n\n<h2 id=\"prodotti-collegati\" class=\"wp-block-heading has-ti-accent-color has-text-color\">Related products<\/h2>\n\n<p class=\"wp-block-paragraph\">RODER instruments for this topic. Go to the catalogue pages for models, technical data and documentation. <\/p>\n\n<div class=\"wp-block-group is-layout-grid wp-container-core-group-is-layout-b251d530 wp-block-group-is-layout-grid\">\n<div class=\"wp-block-group has-border-color has-white-background-color has-background is-layout-constrained wp-container-core-group-is-layout-10ff9433 wp-block-group-is-layout-constrained\" style=\"border-color:#e0e0e0;border-width:1px;border-radius:8px;padding:16px\">\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/roder.it\/en\/products\/ultrasonic-thickness-gauges\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/01\/zx-corrosion-thickness-gauges.jpg\" alt=\"Dakota ultrasonic thickness gauges\" style=\"border-radius:6px;aspect-ratio:4\/3;object-fit:contain\"\/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.385), 17px);\"><a href=\"https:\/\/roder.it\/en\/products\/ultrasonic-thickness-gauges\/\">Dakota ultrasonic thickness gauges<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">UT thickness gauges for corrosion and precision (ZX, CMX, MX, PMX, CMX10-DL series).<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-custom-font-size wp-element-button\" href=\"https:\/\/roder.it\/en\/products\/ultrasonic-thickness-gauges\/\" style=\"font-size:14px\">Browse the catalogue<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<h2 id=\"faq\" class=\"wp-block-heading has-ti-accent-color has-text-color\">Frequently asked questions<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\"><strong class=\"schema-faq-question\">What does an ultrasonic thickness gauge measure?<\/strong><p class=\"schema-faq-answer\">It measures the remaining thickness of a metal wall using the time of flight of an ultrasonic pulse reflected by the opposite wall, accessing it from one side only.<\/p><\/div><div class=\"schema-faq-section\"><strong class=\"schema-faq-question\">Does the paint have to be removed in order to measure?<\/strong><p class=\"schema-faq-answer\">No, provided Echo-Echo (thru-paint) mode is used, which automatically excludes the thickness of the coating and measures only the base metal.<\/p><\/div><div class=\"schema-faq-section\"><strong class=\"schema-faq-question\">What is the typical resolution?<\/strong><p class=\"schema-faq-answer\">Typically 0.01 mm; precision instruments reach 0.001 mm.<\/p><\/div><div class=\"schema-faq-section\"><strong class=\"schema-faq-question\">Which materials does it work on?<\/strong><p class=\"schema-faq-answer\">On all materials that transmit ultrasound (steel, aluminium, cast iron, plastic, glass), by setting the correct speed of sound for the material.<\/p><\/div><\/div>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading has-ti-accent-color has-text-color has-link-color wp-elements-4\">Contacts &amp; Information<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Contact for general information : <a href=\"mailto:info@roder.it\">info@roder.it<\/a><br\/><br\/>Machine Vision Division of RODER : <a href=\"https:\/\/www.visiotronix.com\">www.visiotronix.com<\/a><br\/>RODER Instruments Division : <a href=\"https:\/\/www.visiotronix.com\">www.innovacheck.com<\/a><br\/>More about RODER : <a href=\"https:\/\/roder.it\/en\/contacts\/\">about us<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The information contained in this website is provided for information purposes only. Although it has been prepared with the greatest care, it does not constitute a contractual offer or a binding commitment to supply. It may contain transcription, translation or typographical errors. For precise and up-to-date information, please contact our company directly.   <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Note:<\/strong> Some images on this website have been intentionally generated using artificial intelligence (AI). This is because, for many applications and projects, photographs of the actual installation or system cannot be disclosed owing to confidentiality agreements, contractual clauses and non-disclosure agreements (NDAs). <\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Ultrasonic thickness gauging is the most widely used technique for corrosion monitoring: it measures the remaining wall thickness of metal from one side only, without cutting or dismantling the component. Corrosion control consists of verifying that the thickness of a wall (pipe, tank, hull, boiler) does not fall below the minimum safe value. Ultrasonic thickness [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":0,"parent":19973,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"footnotes":""},"class_list":["post-25256","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Thickness gauging for corrosion monitoring - RODER SRL<\/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:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Thickness gauging for corrosion monitoring - RODER SRL\" \/>\n<meta property=\"og:description\" content=\"Ultrasonic thickness gauging is the most widely used technique for corrosion monitoring: it measures the remaining wall thickness of metal from one side only, without cutting or dismantling the component. Corrosion control consists of verifying that the thickness of a wall (pipe, tank, hull, boiler) does not fall below the minimum safe value. 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Corrosion control consists of verifying that the thickness of a wall (pipe, tank, hull, boiler) does not fall below the minimum safe value. Ultrasonic thickness [&hellip;]","og_url":"https:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/","og_site_name":"RODER SRL","article_modified_time":"2026-10-02T12:15:19+00:00","og_image":[{"url":"https:\/\/roder.it\/wp-content\/uploads\/2026\/01\/zx-corrosion-thickness-gauges.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":["WebPage","FAQPage"],"@id":"https:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/","url":"https:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/","name":"Thickness gauging for corrosion monitoring - RODER SRL","isPartOf":{"@id":"https:\/\/roder.it\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/#primaryimage"},"image":{"@id":"https:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/#primaryimage"},"thumbnailUrl":"https:\/\/roder.it\/wp-content\/uploads\/2026\/01\/zx-corrosion-thickness-gauges.jpg","datePublished":"2026-07-07T13:40:19+00:00","dateModified":"2026-10-02T12:15:19+00:00","breadcrumb":{"@id":"https:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/#primaryimage","url":"https:\/\/roder.it\/wp-content\/uploads\/2026\/01\/zx-corrosion-thickness-gauges.jpg","contentUrl":"https:\/\/roder.it\/wp-content\/uploads\/2026\/01\/zx-corrosion-thickness-gauges.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/roder.it\/en\/technologies\/ultrasound\/thickness-gauging-for-corrosion-monitoring\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/roder.it\/en\/home\/"},{"@type":"ListItem","position":2,"name":"Technologies","item":"https:\/\/roder.it\/en\/technologies\/"},{"@type":"ListItem","position":3,"name":"Ultrasound","item":"https:\/\/roder.it\/en\/technologies\/ultrasound\/"},{"@type":"ListItem","position":4,"name":"Thickness gauging for corrosion monitoring"}]},{"@type":"WebSite","@id":"https:\/\/roder.it\/en\/#website","url":"https:\/\/roder.it\/en\/","name":"RODER SRL","description":"","publisher":{"@id":"https:\/\/roder.it\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/roder.it\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/roder.it\/en\/#organization","name":"RODER SRL","url":"https:\/\/roder.it\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/roder.it\/en\/#\/schema\/logo\/image\/","url":"https:\/\/roder.it\/wp-content\/uploads\/2019\/05\/logo_roder_standard_sfondo_bianco.png","contentUrl":"https:\/\/roder.it\/wp-content\/uploads\/2019\/05\/logo_roder_standard_sfondo_bianco.png","width":691,"height":80,"caption":"RODER SRL"},"image":{"@id":"https:\/\/roder.it\/en\/#\/schema\/logo\/image\/"}}]}},"jetpack_likes_enabled":false,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/PaWZeX-6zm","jetpack-related-posts":[{"id":18588,"url":"https:\/\/roder.it\/en\/products\/ultrasonic-thickness-gauges\/","url_meta":{"origin":25256,"position":0},"title":"Ultrasonic thickness gauges","author":"GSM","date":"8 May 2026","format":false,"excerpt":"RODER \u00b7 Dakota NDT ultrasonic thickness gauges Dakota NDT ultrasonic thickness gauges The Dakota NDT ultrasonic thickness gauges distributed by RODER measure the thickness of metals and materials non-destructively for corrosion monitoring and precision measurement. 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