{"id":20701,"date":"2026-07-07T16:01:19","date_gmt":"2026-07-07T14:01:19","guid":{"rendered":"https:\/\/roder.it\/inspection\/dimension-and-geometry\/non-contact-distance-measurement\/"},"modified":"2026-09-24T12:39:29","modified_gmt":"2026-09-24T10:39:29","slug":"non-contact-distance-measurement","status":"publish","type":"page","link":"https:\/\/roder.it\/en\/inspection\/dimension-and-geometry\/non-contact-distance-measurement\/","title":{"rendered":"Non-contact distance measurement"},"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\/2020\/01\/ldm_41_42_series_laser_distance_meters_industrial_applications_masterimage.png\" alt=\"Non-contact distance measurement\" 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>Non-contact distance measurement<\/strong> with LASER distance sensors makes it possible to detect distances, positions and levels quickly and accurately, even on moving, hot or hard-to-reach objects, without touching the target.<\/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-contact:<\/strong> nothing touches the target<\/li>\n\n\n\n<li><strong>LASER beam:<\/strong> localized, accurate measurement<\/li>\n\n\n\n<li><strong>Wide range:<\/strong> from a few cm to hundreds of meters<\/li>\n\n\n\n<li><strong>Accuracy:<\/strong> down to the millimeter<\/li>\n\n\n\n<li><strong>Moving or hot objects:<\/strong> safe measurement from a distance<\/li>\n\n\n\n<li><strong>Industrial outputs:<\/strong> analog, serial, network<\/li>\n\n\n\n<li><strong>Applications:<\/strong> level, position, clearances, safety<\/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\">When touching the object is not possible or not convenient, because it is moving, hot, fragile or far away, distance has to be measured <strong>without contact<\/strong>. Industrial LASER distance sensors meet this need by projecting a light beam onto the target and deriving the distance from the time of flight or from the phase measurement of the reflected signal. <\/p>\n\n<p class=\"wp-block-paragraph\">The result is a <strong>fast, repeatable and safe<\/strong> measurement, available in real time and easy to integrate into automation and process control systems.<\/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 non-contact distance measurement works<\/h2>\n\n<p class=\"wp-block-paragraph\">The distance sensor emits a visible red LASER beam toward the target; the reflected light returns to the receiver and the electronics calculate the distance. The techniques used are <strong>time of flight<\/strong> (suitable for long distances) and <strong>phase measurement<\/strong> (maximum accuracy over medium distances). The visible beam makes it easier to align the sensor on the exact point to be measured.  <\/p>\n\n<p class=\"wp-block-paragraph\">The measurement is largely <strong>independent of the target surface<\/strong>, and with a reflector very long distances can be reached.<\/p>\n\n<h2 id=\"grandezze\" class=\"wp-block-heading has-ti-accent-color has-text-color\">Distance, position and level<\/h2>\n\n<p class=\"wp-block-paragraph\">Distance measurement yields a number of quantities useful for process control:<\/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>Level<\/strong> of materials in tanks, silos and hoppers.<\/li>\n\n<li><strong>Position and displacement<\/strong> of overhead cranes, cranes, carriages and machines.<\/li>\n\n<li><strong>Clearances and safety distances<\/strong> on the production line.<\/li>\n\n<li><strong>Length<\/strong> of objects in motion (combined with speed).<\/li>\n<\/ul>\n\n<h2 id=\"vantaggi\" class=\"wp-block-heading has-ti-accent-color has-text-color\">Benefits and integration<\/h2>\n\n<p class=\"wp-block-paragraph\">Non-contact measurement eliminates the wear and downtime of mechanical instruments, makes it possible to measure hazardous or inaccessible objects and provides data in real time. The <strong>4 to 20 mA analog outputs<\/strong>, serial outputs and network outputs (Ethernet, PROFINET, PROFIBUS, EtherNet\/IP) allow direct integration into PLCs and control systems. Dedicated protective housings allow use in harsh and high temperature environments.  <\/p>\n\n<h2 id=\"strumenti\" class=\"wp-block-heading has-ti-accent-color has-text-color\">RODER instruments<\/h2>\n\n<p class=\"wp-block-paragraph\">The <strong>industrial LASER distance sensors<\/strong> distributed by RODER cover a wide measuring range with millimeter accuracy and a broad choice of interfaces and accessories. You will find the models and technical data on the linked catalog pages. <\/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\/industrial-laser-distance-sensors\/\"><img decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2020\/01\/ldm_41_42_series_laser_distance_meters_industrial_applications_masterimage.png\" alt=\"Industrial LASER distance sensors\" 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\/industrial-laser-distance-sensors\/\">Industrial LASER distance sensors<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">LDM LASER distance sensors for non-contact distance, position and level measurement.<\/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\/industrial-laser-distance-sensors\/\" 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\">How does non-contact distance measurement work?<\/strong><p class=\"schema-faq-answer\">A LASER beam is projected onto the target; from the reflected light the instrument derives the distance by time of flight or phase measurement.<\/p><\/div><div class=\"schema-faq-section\"><strong class=\"schema-faq-question\">What accuracy can be achieved?<\/strong><p class=\"schema-faq-answer\">Down to the millimeter with phase measurement, depending on the model and the distance.<\/p><\/div><div class=\"schema-faq-section\"><strong class=\"schema-faq-question\">Can moving or hot objects be measured?<\/strong><p class=\"schema-faq-answer\">Yes: non-contact measurement is ideal precisely for moving, hot or inaccessible objects.<\/p><\/div><div class=\"schema-faq-section\"><strong class=\"schema-faq-question\">How is it integrated into a plant?<\/strong><p class=\"schema-faq-answer\">Through 4 to 20 mA analog outputs, serial outputs and industrial network outputs that can be connected to PLCs and control systems.<\/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>Non-contact distance measurement with LASER distance sensors makes it possible to detect distances, positions and levels quickly and accurately, even on moving, hot or hard-to-reach objects, without touching the target. When touching the object is not possible or not convenient, because it is moving, hot, fragile or far away, distance has to be measured without [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":0,"parent":19240,"menu_order":3,"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-20701","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>Non-contact distance measurement - 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\/inspection\/dimension-and-geometry\/non-contact-distance-measurement\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Non-contact distance measurement - RODER SRL\" \/>\n<meta property=\"og:description\" content=\"Non-contact distance measurement with LASER distance sensors makes it possible to detect distances, positions and levels quickly and accurately, even on moving, hot or hard-to-reach objects, without touching the target. 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