{"id":4910,"date":"2026-09-07T10:37:20","date_gmt":"2026-09-07T10:37:20","guid":{"rendered":"https:\/\/ultrasuonindt.it\/support\/frequently-asked-questions\/"},"modified":"2026-09-13T08:36:56","modified_gmt":"2026-09-13T08:36:56","slug":"frequently-asked-questions","status":"publish","type":"page","link":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/","title":{"rendered":"Frequently asked questions"},"content":{"rendered":"\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:36%\">\n<figure class=\"wp-block-image size-full has-custom-border\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"387\" height=\"387\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX10-DL_immagine_con_sonda_dual_element-web-387x387-1.webp?resize=387%2C387&#038;ssl=1\" alt=\"Dakota NDT instrument with dual element probe for ultrasonic measurements\" class=\"wp-image-1010 has-border-color\" style=\"border-color:#000000;border-width:1px;border-radius:15px\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX10-DL_immagine_con_sonda_dual_element-web-387x387-1.webp?w=387&amp;ssl=1 387w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX10-DL_immagine_con_sonda_dual_element-web-387x387-1.webp?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX10-DL_immagine_con_sonda_dual_element-web-387x387-1.webp?resize=150%2C150&amp;ssl=1 150w\" sizes=\"auto, (max-width: 387px) 100vw, 387px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:4%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-fd8b8904 wp-block-group-is-layout-constrained\" style=\"border-top-right-radius:6px;border-bottom-right-radius:6px;border-left-color:#225f78;border-left-width:6px;background-color:#ebf1f4;padding-top:24px;padding-right:28px;padding-bottom:24px;padding-left:28px\">\n<p class=\"wp-block-paragraph\" style=\"color:#225f78;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.408), 18px);font-style:italic;font-weight:400;line-height:1.6\">The questions our technical office receives most often, gathered in one place: <strong>instrument choice, probes, calibration, readings that do not add up, standards and services<\/strong>.<\/p>\n<\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\" style=\"list-style:none;padding-left:0px;line-height:1.6\"><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Choosing the instrument<\/strong>: what really changes between models<\/li><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Measuring through paint<\/strong>: when it is needed and which models do it<\/li><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Probes<\/strong>: how to choose frequency and type<\/li><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Unstable readings<\/strong>: the most common causes<\/li><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Calibration<\/strong>: how often and with which certificate<\/li><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Standards<\/strong>: what they require of the instrumentation<\/li><\/ul>\n<\/div>\n<\/div>\n\n<div style=\"height:28px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Whoever calls our technical office rarely has a theoretical question. They have an instrument in hand that does not read as it should, a tender to prepare, an auditor on the way or a purchasing decision to justify to whoever signs. The answers below are the ones we give on the phone, written as we would say them.  <\/p>\n\n<p class=\"wp-block-paragraph\">Where the answer needs more than a few lines you will find a link to the guide that goes deeper. If your question is not here, <a href=\"https:\/\/ultrasuonindt.it\/en\/contact\/\">write to us<\/a>: in most cases it is solved remotely at the first contact, and we add it to this page. <\/p>\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>Need 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 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\">Contact us<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">For the meaning of the technical terms that recur in the answers \u2014 A-Scan, Echo-Echo, PECT, V-path, data logger \u2014 see the <a href=\"https:\/\/ultrasuonindt.it\/en\/support\/technical-glossary\/\">Glossary of technical terms<\/a>.<\/p>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Choosing the instrument<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1757860000000\"><strong class=\"schema-faq-question\">What is the difference between a corrosion gauge and a precision gauge?<\/strong><p class=\"schema-faq-answer\">The field of use and the type of probe. A corrosion gauge uses dual element probes and is optimised for thick, irregular walls, with a resolution of one hundredth of a millimetre: it serves to know how much material is left. A precision gauge uses single element, delay line and pencil probes, goes down to a thousandth and has Interface-Echo modes: it serves to verify that a machined part meets tolerance.  <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757860001000\"><strong class=\"schema-faq-question\">What is the A-Scan for? Do I really need it? <\/strong><p class=\"schema-faq-answer\">The A-Scan shows the waveform instead of just the number, and lets you check where the gate has locked onto the echo. On clean, regular surfaces you can do without it; on advanced corrosion, irregular back walls or attenuating materials it is often the only way to understand whether an anomalous reading is real or an artefact. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757860002000\"><strong class=\"schema-faq-question\">What does the DL suffix in model names mean?<\/strong><p class=\"schema-faq-answer\">It indicates the presence of the data logger, i.e. the ability to store readings in the instrument and then transfer them to the computer. Models without DL show the measurement but do not keep it: they are fine for occasional checks, not for campaigns to be documented. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757860003000\"><strong class=\"schema-faq-question\">Can I measure without removing the paint?<\/strong><p class=\"schema-faq-answer\">Yes, but an instrument with Echo-Echo or PECT mode is needed: not all models have it. In the Dakota range it is offered by the ZX6-DL, the CMX series and the CX models with ThruPaint. Pulse-Echo-only instruments require removal of the coating at the measurement point.  <\/p><\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Further reading: <a href=\"https:\/\/ultrasuonindt.it\/dakota-cx2-vs-cx4-vs-cx8-dl-confronto-misuratori\/\">Dakota CX2 vs CX4 vs CX8-DL<\/a> \u00b7 <a href=\"https:\/\/ultrasuonindt.it\/misuratore-corrosione-vs-rilevatore-difetti-quando-servono\/\">Corrosion gauge vs flaw detector<\/a> \u00b7 <a href=\"https:\/\/ultrasuonindt.it\/echo-echo-thrupaint-misura-spessore-vernici-rivestimenti\/\">Echo-Echo and ThruPaint\u2122<\/a>.<\/p>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Probes and measurement<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1757861000000\"><strong class=\"schema-faq-question\">The readings are unstable: what do I check first?<\/strong><p class=\"schema-faq-answer\">In order: coupling, i.e. whether there is enough couplant and the surface is clean; the condition of the probe, in particular wear of the contact face; adjustment, which must be redone if material or probe has changed; gain, if the instrument allows it. On corroded surfaces the problem is often the irregular back wall, not the instrument. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757861001000\"><strong class=\"schema-faq-question\">How do I choose the probe frequency?<\/strong><p class=\"schema-faq-answer\">In general, high frequencies give more resolution on thin thicknesses but penetrate less; low frequencies penetrate more and work better on attenuating materials, with lower resolution. The choice depends on expected thickness, material, temperature and geometry of the part. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757861002000\"><strong class=\"schema-faq-question\">How often must a probe be replaced?<\/strong><p class=\"schema-faq-answer\">There is no fixed interval: it depends on use. The contact face wears, and a worn probe gives unstable readings or no longer locks onto the echo. If measurements progressively worsen and coupling is correct, the probe is the first suspect.  <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757861003000\"><strong class=\"schema-faq-question\">Can I measure on hot surfaces?<\/strong><p class=\"schema-faq-answer\">High-temperature probes and a suitable couplant are needed; moreover the speed of sound in the metal changes with temperature, so the reading must be compensated. Some models, such as the CMX series, have a mode with automatic temperature compensation. <\/p><\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Further reading: <a href=\"https:\/\/ultrasuonindt.it\/scegliere-trasduttore-ultrasonico-guida-completa\/\">How to choose the right ultrasonic transducer<\/a> \u00b7 <a href=\"https:\/\/ultrasuonindt.it\/migliorare-risultati-materiali-difficili-ultrasuoni\/\">How to improve results on difficult materials<\/a> \u00b7 <a href=\"https:\/\/ultrasuonindt.it\/en\/products\/probes-and-accessories\/\">Probes and Accessories<\/a>.<\/p>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Calibration, standards and services<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1757862000000\"><strong class=\"schema-faq-question\">How often must the instrument be calibrated?<\/strong><p class=\"schema-faq-answer\">The manufacturer&#8217;s generic recommendation is annual, but the correct interval depends on the company quality system, the sector and the intensity of use. EN 15317 and the client&#8217;s requirements are the references to follow. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757862001000\"><strong class=\"schema-faq-question\">Does field adjustment replace certified calibration?<\/strong><p class=\"schema-faq-answer\">No. Adjustment on a reference block adapts the instrument to the material and the probe and must be done at every campaign; periodic calibration certifies the instrument and its metrological traceability, and it is what an auditor will ask you for. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757862002000\"><strong class=\"schema-faq-question\">Can I get service on an instrument bought elsewhere?<\/strong><p class=\"schema-faq-answer\">Yes. Calibration, repair and technical advice are also available for Dakota instruments purchased through other official channels. We do not, however, guarantee service on instruments of unofficial or parallel origin.  <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757862003000\"><strong class=\"schema-faq-question\">What do the standards require of the instrumentation?<\/strong><p class=\"schema-faq-answer\">Product standards such as EN 14127 and ASTM E797 define the measurement method; EN 15317 concerns periodic instrument verification; sector standards such as API 570, API 653 and ASME PCC-1 require the instrument to be in current calibration and the readings to be traceable. In practice: calibrated instrument, documented adjustment, archived data. <\/p><\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Further reading: <a href=\"https:\/\/ultrasuonindt.it\/en\/support\/calibrazione-e-taratura\/\">Calibration and adjustment<\/a> \u00b7 <a href=\"https:\/\/ultrasuonindt.it\/normative-ndt-misura-spessore-en-14127-astm-e797\/\">NDT standards for thickness measurement<\/a> \u00b7 <a href=\"https:\/\/ultrasuonindt.it\/en\/support\/riparazione-e-assistenza\/\">Repair and service<\/a>.<\/p>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Did not find your question<\/h2>\n\n<p class=\"wp-block-paragraph\">Write to us describing the situation: instrument in use, material, expected thickness and what does not add up. In most cases the problem is solved at the first contact, without on-site work or shipping. Recurring questions then end up on this page.  <\/p>\n\n<p class=\"wp-block-paragraph\">For the rest of the support: <a href=\"https:\/\/ultrasuonindt.it\/en\/support\/\">Support and Resources<\/a>.<\/p>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading\">Further information and contacts <\/h5>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><a href=\"http:\/\/www.roder.it\">Systems division and sensor integration partner : www.roder.it<\/a><br\/><a href=\"https:\/\/ultrasuonindt.it\/chi-siamo\/\">More information about RODER SRL : about us<\/a><br\/>Contact for general information : <a href=\"mailto:info@roder.it\">info@roder.it<\/a><br\/>Contact for information about these products : <a href=\"mailto:info@roder.it\">info@roder.it<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><br\/>The information contained on this web page is provided for information purposes only. Although it has been compiled with the utmost 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=\"has-small-font-size wp-block-paragraph\">Some images on this website have been intentionally generated using Artificial Intelligence (AI). This is because, for many applications and projects, it is not possible to disclose photographs of the installation or of the actual system due to confidentiality agreements, confidentiality clauses and non-disclosure agreements (NDAs). <\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The questions our technical office receives most often, gathered in one place: instrument choice, probes, calibration, readings that do not add up, standards and services. \u2713 Choosing the instrument: what really changes between models \u2713 Measuring through paint: when it is needed and which models do it \u2713 Probes: how to choose frequency and type [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":4911,"parent":3549,"menu_order":7,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"frequently asked questions ultrasonic thickness measurement","_yoast_wpseo_title":"NDT frequently asked questions | Ultrasonic thickness measurement","_yoast_wpseo_metadesc":"The questions customers ask most often about ultrasonic thickness measurement, instrument choice, probes, calibration, unstable readings and standards.","_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,"footnotes":""},"class_list":["post-4910","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - 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","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757860003000","position":4,"url":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757860003000","name":"Can I measure without removing the paint?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, but an instrument with Echo-Echo or PECT mode is needed: not all models have it. In the Dakota range it is offered by the ZX6-DL, the CMX series and the CX models with ThruPaint. Pulse-Echo-only instruments require removal of the coating at the measurement point.  ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757861000000","position":5,"url":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757861000000","name":"The readings are unstable: what do I check first?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"In order: coupling, i.e. whether there is enough couplant and the surface is clean; the condition of the probe, in particular wear of the contact face; adjustment, which must be redone if material or probe has changed; gain, if the instrument allows it.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757861001000","position":6,"url":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757861001000","name":"How do I choose the probe frequency?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"In general, high frequencies give more resolution on thin thicknesses but penetrate less; low frequencies penetrate more and work better on attenuating materials, with lower resolution. The choice depends on expected thickness, material, temperature and geometry of the part. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757861002000","position":7,"url":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757861002000","name":"How often must a probe be replaced?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"There is no fixed interval: it depends on use. The contact face wears, and a worn probe gives unstable readings or no longer locks onto the echo. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757861003000","position":8,"url":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757861003000","name":"Can I measure on hot surfaces?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"High-temperature probes and a suitable couplant are needed; moreover the speed of sound in the metal changes with temperature, so the reading must be compensated. Some models, such as the CMX series, have a mode with automatic temperature compensation. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757862000000","position":9,"url":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757862000000","name":"How often must the instrument be calibrated?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The manufacturer's generic recommendation is annual, but the correct interval depends on the company quality system, the sector and the intensity of use. EN 15317 and the client's requirements are the references to follow. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757862001000","position":10,"url":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757862001000","name":"Does field adjustment replace certified calibration?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No. Adjustment on a reference block adapts the instrument to the material and the probe and must be done at every campaign; periodic calibration certifies the instrument and its metrological traceability. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757862002000","position":11,"url":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757862002000","name":"Can I get service on an instrument bought elsewhere?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. Calibration, repair and technical advice are also available for Dakota instruments purchased through other official channels. We do not, however, guarantee service on instruments of unofficial or parallel origin.  ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757862003000","position":12,"url":"https:\/\/ultrasuonindt.it\/en\/support\/frequently-asked-questions\/#faq-question-1757862003000","name":"What do the standards require of the instrumentation?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Product standards such as EN 14127 and ASTM E797 define the measurement method; EN 15317 concerns periodic instrument verification; sector standards such as API 570, API 653 and ASME PCC-1 require the instrument to be in current calibration and the readings to be traceable.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/PeHTL3-1hc","jetpack-related-posts":[{"id":3549,"url":"https:\/\/ultrasuonindt.it\/en\/support\/","url_meta":{"origin":4910,"position":0},"title":"Support","author":"GSM","date":"16 April 2026","format":false,"excerpt":"RODER SRL is the official Dakota NDT distributor and works alongside you throughout the life cycle of the instrumentation: from the initial choice to operator training, from periodic checks to extraordinary repairs. This page brings together in one place the services, the documentation and the technical guides: below you will\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT ultrasonic probe during the adjustment and calibration procedure","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_sonda_e_procedura_di_taratura_e_calibrazione-web-960x960-1.webp?fit=960%2C960&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_sonda_e_procedura_di_taratura_e_calibrazione-web-960x960-1.webp?fit=960%2C960&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_sonda_e_procedura_di_taratura_e_calibrazione-web-960x960-1.webp?fit=960%2C960&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_sonda_e_procedura_di_taratura_e_calibrazione-web-960x960-1.webp?fit=960%2C960&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":4991,"url":"https:\/\/ultrasuonindt.it\/en\/ndt-technologies-and-standards\/ultrasonic-thickness-measurement\/velocity-mode-and-speed-of-sound\/","url_meta":{"origin":4910,"position":1},"title":"Velocity Mode and speed of sound","author":"GSM","date":"7 September 2026","format":false,"excerpt":"Propagation velocity is the exchange rate that converts a time into a length. Getting it wrong does not produce random readings: it shifts them all in the same direction, which is why the error goes unnoticed. \u2713 Every material has its own propagation velocity \u2713 Preset material lists for the\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT calibration blocks in 4340 steel for adjusting ultrasonic thickness gauges","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/05\/dakota_ndt-blocchetti_di_calibrazione-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/05\/dakota_ndt-blocchetti_di_calibrazione-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/05\/dakota_ndt-blocchetti_di_calibrazione-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/05\/dakota_ndt-blocchetti_di_calibrazione-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":3472,"url":"https:\/\/ultrasuonindt.it\/en\/ndt-technologies-and-standards\/standards-for-thickness-measurement\/en-15317-performance-verification-of-ultrasonic-thickness-gauges\/","url_meta":{"origin":4910,"position":2},"title":"EN 15317 \u2014 Performance verification of ultrasonic thickness gauges","author":"GSM","date":"7 September 2026","format":false,"excerpt":"The other standards say how the measurement is made. EN 15317 says how the instrument used to make it is assessed. \u2713 Reference edition: EN 15317:2013 \u2713 Methods and acceptance criteria for instrument performance \u2713 Direct-reading instruments and waveform-display instruments \u2713 Single crystal or dual element probes EN 15317:2013 occupies\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT calibration blocks in 4340 steel for adjusting ultrasonic thickness gauges","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/05\/dakota_ndt-blocchetti_di_calibrazione-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/05\/dakota_ndt-blocchetti_di_calibrazione-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/05\/dakota_ndt-blocchetti_di_calibrazione-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/05\/dakota_ndt-blocchetti_di_calibrazione-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":4533,"url":"https:\/\/ultrasuonindt.it\/en\/ndt-technologies-and-standards\/transducers-and-couplant\/","url_meta":{"origin":4910,"position":3},"title":"Transducers and couplant","author":"GSM","date":"7 September 2026","format":false,"excerpt":"When a measurement fails, the culprit is almost always the coupling between probe and part, not the instrument. Choosing the transducer is the first technical decision of every inspection. \u2713 Dual element for corrosion, single element for precision \u2713 Delay line for very thin thicknesses \u2713 Dedicated probes for high-temperature\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT high-precision ultrasonic probe, application image for thickness measurements","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":4654,"url":"https:\/\/ultrasuonindt.it\/en\/ndt-technologies-and-standards\/standards-for-bolted-joint-tightening\/","url_meta":{"origin":4910,"position":4},"title":"Standards for bolted joint tightening","author":"GSM","date":"7 September 2026","format":false,"excerpt":"Two worlds with different needs: the sealing of a pressurised flange and the strength of a structural connection. Both depend on the actual bolt load, but they govern it with distinct rules. \u2713 ASME PCC-1: guidelines for pressure-boundary flanged joints \u2713 EN 1090-2: execution of steel structures, connections included \u2713\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT BT Bolt Tension Monitor ultrasonic bolt elongation measurement application","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":3484,"url":"https:\/\/ultrasuonindt.it\/en\/ndt-technologies-and-standards\/qualifica-di-personale-e-strumenti\/en-4179-and-nadcap\/","url_meta":{"origin":4910,"position":5},"title":"EN 4179 and Nadcap","author":"GSM","date":"7 September 2026","format":false,"excerpt":"The aerospace sector has its own reference for the qualification of NDT personnel, and an audit programme that verifies its application at suppliers. \u2713 EN 4179:2026, superseding the 2021 edition \u2713 Aerospace series: qualification and approval of NDT personnel \u2713 The FAA states that EN 4179 is technically equivalent to\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT high-precision ultrasonic probe, application image for thickness measurements","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/pages\/4910","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/users\/157040980"}],"replies":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/comments?post=4910"}],"version-history":[{"count":2,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/pages\/4910\/revisions"}],"predecessor-version":[{"id":4914,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/pages\/4910\/revisions\/4914"}],"up":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/pages\/3549"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/media\/4911"}],"wp:attachment":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/media?parent=4910"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}