{"id":26002,"date":"2026-06-27T14:49:54","date_gmt":"2026-06-27T12:49:54","guid":{"rendered":"https:\/\/roder.it\/produits\/velocimetres-et-encodeurs-optiques\/velocimetres-optiques-serie-vlm500\/"},"modified":"2026-10-05T16:16:18","modified_gmt":"2026-10-05T14:16:18","slug":"velocimetres-optiques-serie-vlm500","status":"publish","type":"page","link":"https:\/\/roder.it\/fr\/produits\/velocimetres-et-encodeurs-optiques\/velocimetres-optiques-serie-vlm500\/","title":{"rendered":"V\u00e9locim\u00e8tres optiques s\u00e9rie VLM500"},"content":{"rendered":"\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full\" style=\"margin-right:var(--wp--preset--spacing--20);margin-left:var(--wp--preset--spacing--20)\"><img loading=\"lazy\" decoding=\"async\" width=\"510\" height=\"510\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1.webp\" alt=\"V\u00e9locim\u00e8tre codeur optique ASTech VLM500 pour la mesure sans contact de la vitesse et de la longueur\" class=\"wp-image-14956\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1.webp 510w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 510px) 100vw, 510px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<h3 class=\"wp-block-heading has-text-color\" style=\"color:#f28c28\">V\u00e9locim\u00e8tre et codeur optique sans contact pour la mesure continue de la vitesse et de la longueur sur bandes, t\u00f4les, tubes, fils et profil\u00e9s en mouvement.<\/h3>\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\">\n<li><strong>Principe optique sans contact<\/strong> \u00e0 filtre spatial avec capteur CCD<\/li>\n\n\n\n<li><strong>Vitesse jusqu&rsquo;\u00e0 50 m\/s<\/strong> (jusqu&rsquo;\u00e0 3000 m\/min en plage \u00e9tendue)<\/li>\n\n\n\n<li><strong>Incertitude de mesure &lt; 0,025 %<\/strong> \u00e0 la distance nominale<\/li>\n\n\n\n<li><strong>Mesure sans glissement<\/strong>, sans usure et sans maintenance<\/li>\n\n\n\n<li><strong>\u00c9clairage \u00e0 LED en lumi\u00e8re blanche<\/strong>, sans lumi\u00e8re LASER nocive<\/li>\n\n\n\n<li><strong>Distances de travail<\/strong> 185 \/ 240 \/ 330 mm selon la version<\/li>\n\n\n\n<li><strong>Interfaces industrielles multiples<\/strong> et sortie codeur \u00e0 impulsions<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\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-1 wp-block-paragraph\" style=\"font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.726), 35px);\"><strong>Souhaitez-vous \u00eatre aid\u00e9 dans le choix du produit ?<\/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\/contatti-roder-mail-indirizzo-stabilimento-oglianico-automazione-misure-controlli-industriali\/\">Cliquez ici !<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h4 class=\"wp-block-heading has-ti-accent-color has-text-color\">Pourquoi choisir le VLM500<\/h4>\n\n<ul class=\"wp-block-list is-style-checkbox\">\n<li><strong>Mesure sans contact et sans glissement<\/strong> : le principe optique \u00e0 filtre spatial \u00e9limine les erreurs typiques des roues de mesure, ainsi que l&rsquo;usure m\u00e9canique et la maintenance.<\/li>\n\n\n\n<li><strong>Pr\u00e9cision \u00e9lev\u00e9e<\/strong> : incertitude de mesure &lt; 0,025 % \u00e0 la distance nominale, &lt; 0,05 % dans la plage de travail et &lt; 0,2 % dans la plage de travail \u00e9tendue ; reproductibilit\u00e9 &lt; 0,025 %.<\/li>\n\n\n\n<li><strong>Quasi ind\u00e9pendant du mat\u00e9riau<\/strong> : mesure sur presque toutes les surfaces (m\u00e9tal, papier, textiles, plastique, c\u00e9ramique, bois, caoutchouc) gr\u00e2ce au r\u00e9glage automatique du temps d&rsquo;exposition et de la luminosit\u00e9.<\/li>\n\n\n\n<li><strong>Construction robuste et compacte<\/strong> : bo\u00eetier IP 65, insensible aux impuret\u00e9s, pour des installations s\u00fbres et peu encombrantes en environnement industriel.<\/li>\n\n\n\n<li><strong>Int\u00e9gration flexible<\/strong> : disponible avec diff\u00e9rentes interfaces industrielles (RS232, RS422\/485, USB, Profibus DP, Profinet IO, EtherNet\/IP), une sortie codeur \u00e0 impulsions et une sortie analogique.<\/li>\n\n\n\n<li><strong>Fiabilit\u00e9 dans le temps<\/strong> : dur\u00e9e de vie attendue &gt; 15 ans, 60 mois de garantie, fabrication Made in Germany.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Le <strong>VLM500<\/strong> est un v\u00e9locim\u00e8tre et codeur optique sans contact pour la mesure continue de la <strong>vitesse et de la longueur<\/strong> d&rsquo;objets en mouvement. Il fonctionne selon le <strong>principe du filtre spatial<\/strong> : la surface du mat\u00e9riau est \u00e9clair\u00e9e par une LED \u00e0 lumi\u00e8re blanche int\u00e9gr\u00e9e et la lumi\u00e8re r\u00e9fl\u00e9chie, modul\u00e9e par la structure granulaire de la surface, est d\u00e9tect\u00e9e par un capteur CCD. La fr\u00e9quence obtenue est proportionnelle \u00e0 la vitesse de l&rsquo;objet ; la longueur s&rsquo;obtient par int\u00e9gration dans le temps.  <\/p>\n\n<p class=\"wp-block-paragraph\">Comme la mesure s&rsquo;effectue sans contact et sans glissement, le VLM500 \u00e9limine l&rsquo;usure et les erreurs typiques des roues de mesure. Le r\u00e9glage automatique rapide du temps d&rsquo;exposition et de la luminosit\u00e9 permet de mesurer sur presque toutes les surfaces, ce qui rend l&rsquo;instrument adapt\u00e9 \u00e0 de nombreux secteurs industriels : <strong>m\u00e9tal, papier, bois, c\u00e9ramique, textiles, plastique et caoutchouc<\/strong>. <\/p>\n\n<p class=\"wp-block-paragraph\">La compacit\u00e9 et la robustesse du bo\u00eetier (IP 65) permettent des installations s\u00fbres et peu encombrantes. Selon les besoins, le VLM500 peut \u00eatre \u00e9quip\u00e9 de diff\u00e9rentes interfaces industrielles, de sorties \u00e0 impulsions et d&rsquo;une sortie analogique, pour s&rsquo;int\u00e9grer aux syst\u00e8mes d&rsquo;automatisation des bobineuses, des lignes de coupe, des lignes de rev\u00eatement et d&rsquo;inspection, des machines \u00e0 papier et des extrudeuses. <\/p>\n\n<h2 class=\"wp-block-heading\">Documentation technique<\/h2>\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><a href=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-velocimetro_encoder_ottico_vlm500_datasheet_en_v23-datasheet.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/icona_pdf_download.webp\" alt=\"T\u00e9l\u00e9charger le PDF\" width=\"48\" height=\"61\" class=\"wp-image-14977\" \/><\/a><\/td><td><a href=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-velocimetro_encoder_ottico_vlm500_datasheet_en_v23-datasheet.pdf\" target=\"_blank\" rel=\"noopener\"><strong>Fiche technique VLM500<\/strong><\/a><\/td><td>Fiche technique<\/td><\/tr><tr><td><a href=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-velocimetro_encoder_ottico_vlm500_manuale_en_v28-manual.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/icona_pdf_download.webp\" alt=\"T\u00e9l\u00e9charger le PDF\" width=\"48\" height=\"61\" class=\"wp-image-14977\" \/><\/a><\/td><td><a href=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-velocimetro_encoder_ottico_vlm500_manuale_en_v28-manual.pdf\" target=\"_blank\" rel=\"noopener\"><strong>Manuel VLM500<\/strong><\/a><\/td><td>Manuel<\/td><\/tr><tr><td><a href=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-velocimetro_encoder_ottico_vlm500_manuale_versione_speciale_dg_en_v17-manual.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/icona_pdf_download.webp\" alt=\"T\u00e9l\u00e9charger le PDF\" width=\"48\" height=\"61\" class=\"wp-image-14977\" \/><\/a><\/td><td><a href=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-velocimetro_encoder_ottico_vlm500_manuale_versione_speciale_dg_en_v17-manual.pdf\" target=\"_blank\" rel=\"noopener\"><strong>Manuel VLM500 version sp\u00e9ciale DG<\/strong><\/a><\/td><td>Manuel<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\">Principe de fonctionnement<\/h2>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<figure class=\"wp-block-image alignleft size-full is-resized\" style=\"margin-right:40px;margin-bottom:30px\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"1200\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-schema_principio_funzionamento_vlm500-web_image-1200x1200-1.webp\" alt=\"Sch\u00e9ma du principe de fonctionnement \u00e0 filtre spatial du v\u00e9locim\u00e8tre optique VLM500\" class=\"wp-image-14946\" style=\"width:420px;height:auto\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-schema_principio_funzionamento_vlm500-web_image-1200x1200-1.webp 1200w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-schema_principio_funzionamento_vlm500-web_image-1200x1200-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-schema_principio_funzionamento_vlm500-web_image-1200x1200-1-1024x1024.webp 1024w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-schema_principio_funzionamento_vlm500-web_image-1200x1200-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-schema_principio_funzionamento_vlm500-web_image-1200x1200-1-768x768.webp 768w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-schema_principio_funzionamento_vlm500-web_image-1200x1200-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le VLM500 repose sur le <strong>principe du filtre spatial<\/strong> (spatial filter). La lumi\u00e8re d&rsquo;une LED \u00e0 lumi\u00e8re blanche \u00e9claire la surface de l&rsquo;objet en mouvement ; la lumi\u00e8re r\u00e9fl\u00e9chie, modul\u00e9e par la morphologie (granularit\u00e9) de la surface, est projet\u00e9e sur un <strong>capteur CCD<\/strong> qui sert de r\u00e9seau de r\u00e9f\u00e9rence. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le mouvement du mat\u00e9riau g\u00e9n\u00e8re un signal dont la <strong>fr\u00e9quence est proportionnelle \u00e0 la vitesse<\/strong>. La longueur est calcul\u00e9e par int\u00e9gration de la vitesse dans le temps. Des boucles de r\u00e9gulation internes r\u00e8glent automatiquement le temps d&rsquo;exposition et la luminosit\u00e9, ce qui garantit une adaptation rapide aux diff\u00e9rentes conditions de surface et une mesure pratiquement ind\u00e9pendante du mat\u00e9riau.  <\/p>\n<\/div>\n\n<h2 class=\"wp-block-heading\">Versions disponibles<\/h2>\n\n<p class=\"wp-block-paragraph\">Le VLM500 est disponible en quatre versions qui se distinguent par la distance de travail et la plage de mesure, afin de s&rsquo;adapter aux diff\u00e9rentes g\u00e9om\u00e9tries d&rsquo;installation et vitesses de ligne.<\/p>\n\n<figure class=\"wp-block-table alignwide is-style-stripes\"><table><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Version<\/th><th class=\"has-text-align-left\" data-align=\"left\">Distance nominale et plage de travail<\/th><th class=\"has-text-align-left\" data-align=\"left\">Plage de mesure<\/th><th class=\"has-text-align-left\" data-align=\"left\">Plage de mesure (plage \u00e9tendue)<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">VLM500A<\/td><td class=\"has-text-align-left\" data-align=\"left\">185 \u00b1 15 mm<\/td><td class=\"has-text-align-left\" data-align=\"left\">0,6 \u2026 2200 m\/min<\/td><td class=\"has-text-align-left\" data-align=\"left\">1,2 \u2026 3000 m\/min<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">VLM500D<\/td><td class=\"has-text-align-left\" data-align=\"left\">240 \u00b1 15 mm<\/td><td class=\"has-text-align-left\" data-align=\"left\">0,18 \u2026 1200 m\/min<\/td><td class=\"has-text-align-left\" data-align=\"left\">0,72 \u2026 2400 m\/min<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">VLM500L<\/td><td class=\"has-text-align-left\" data-align=\"left\">185 \u00b1 10 mm<\/td><td class=\"has-text-align-left\" data-align=\"left\">0,12 \u2026 250 m\/min<\/td><td class=\"has-text-align-left\" data-align=\"left\">0,30 \u2026 600 m\/min<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">VLM500E<\/td><td class=\"has-text-align-left\" data-align=\"left\">330 \u00b1 30 mm<\/td><td class=\"has-text-align-left\" data-align=\"left\">0,60 \u2026 2000 m\/min<\/td><td class=\"has-text-align-left\" data-align=\"left\">1,00 \u2026 2700 m\/min<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<div class=\"wp-block-columns are-vertically-aligned-center 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-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:30%\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"384\" height=\"384\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm502_versione_500_testina_compatta-web_image-384x384-1.webp\" alt=\"VLM502 version compacte de la s\u00e9rie VLM500\" class=\"wp-image-14955\" style=\"width:200px;height:auto\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm502_versione_500_testina_compatta-web_image-384x384-1.webp 384w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm502_versione_500_testina_compatta-web_image-384x384-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm502_versione_500_testina_compatta-web_image-384x384-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm502_versione_500_testina_compatta-web_image-384x384-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 384px) 100vw, 384px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:70%\">\n<p class=\"wp-block-paragraph\">La version <strong>VLM502<\/strong> \u00e0 t\u00eate compacte est \u00e9galement disponible ; elle est con\u00e7ue pour les installations \u00e0 espace r\u00e9duit et conserve le m\u00eame principe de mesure optique que la s\u00e9rie VLM500.<\/p>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\">Sp\u00e9cifications techniques<\/h2>\n\n<figure class=\"wp-block-table alignwide is-style-stripes\"><table><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Principe de mesure<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">Optique sans contact, filtre spatial avec capteur CCD<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Vitesse maximale<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">jusqu&rsquo;\u00e0 50 m\/s<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Incertitude de mesure<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">&lt; 0,025 % \u00e0 la distance nominale ; &lt; 0,05 % dans la plage de travail ; &lt; 0,2 % dans la plage \u00e9tendue<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Reproductibilit\u00e9<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">&lt; 0,025 %<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Temps de rafra\u00eechissement<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">&gt; 0,2 ms, avec moyenne glissante suppl\u00e9mentaire 1 \u2026 32 fois<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Plage de mesure de longueur<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">interne jusqu&rsquo;\u00e0 2 000 000 km<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>\u00c9clairage<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">LED \u00e0 lumi\u00e8re blanche (sans lumi\u00e8re LASER)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Alimentation<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">24 VDC, max 25 W<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Temp\u00e9rature de service<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">0 \u00b0C \u2026 50 \u00b0C<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Indice de protection<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">IP 65<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Poids et dimensions<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">env. 3,6 kg ; 260 \u00d7 160 \u00d7 90 mm (sans connexions)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Interfaces de programmation<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">USB, RS-232, RS-422\/RS-485 (isol\u00e9es)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Sortie \u00e0 impulsions (codeur)<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">A\/B, 2 phases 90\u00b0, r\u00e9solution 8 ns, 0,2 Hz \u2026 25 kHz<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Sortie analogique<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">courant, r\u00e9glable 0 \u2026 20 mA, 0 \u2026 24 mA, 4 \u2026 20 mA<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Bus de terrain<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">Profibus DP, Profinet IO, EtherNet\/IP, Telnet\/UDP via Ethernet<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Conformit\u00e9 CEM<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">EN 61326-1 (groupe 1, classe A)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Dur\u00e9e de vie attendue \/ garantie<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">&gt; 15 ans \/ 60 mois \u2014 Made in Germany<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\">Applications<\/h2>\n\n<ul class=\"wp-block-list\">\n<li><strong>Mesure de longueur et de vitesse<\/strong> sur bobineuses, lignes de coupe (slitting), lignes de rev\u00eatement et d&rsquo;inspection<\/li>\n\n\n\n<li><strong>Industrie sid\u00e9rurgique et m\u00e9tallurgique<\/strong> : bandes, t\u00f4les, fil machine, barres, tubes et produits \u00e9tir\u00e9s, m\u00eame incandescents<\/li>\n\n\n\n<li><strong>Industrie du papier<\/strong> : mesure de vitesse sur la p\u00e2te, la toile et la feuille dans les machines \u00e0 papier<\/li>\n\n\n\n<li><strong>Extrusion<\/strong> : contr\u00f4le de la vitesse et coupe \u00e0 longueur sur mat\u00e9riaux extrud\u00e9s<\/li>\n\n\n\n<li><strong>Contr\u00f4le qualit\u00e9 et inspection<\/strong> : coupe, positionnement, r\u00e9glage et v\u00e9rification dimensionnelle de profil\u00e9s, bandes, feuilles, c\u00e2bles et cordages<\/li>\n<\/ul>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_metalli_materiali_siderurgici-web_image-300x300-1.webp\" alt=\"Application VLM500 sur m\u00e9taux et mat\u00e9riaux sid\u00e9rurgiques\" class=\"wp-image-14939\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_metalli_materiali_siderurgici-web_image-300x300-1.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_metalli_materiali_siderurgici-web_image-300x300-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_metalli_materiali_siderurgici-web_image-300x300-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_lamiera_elevata_velocita-web_image-300x300-1.webp\" alt=\"Application VLM500 sur t\u00f4le \u00e0 grande vitesse\" class=\"wp-image-14941\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_lamiera_elevata_velocita-web_image-300x300-1.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_lamiera_elevata_velocita-web_image-300x300-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_lamiera_elevata_velocita-web_image-300x300-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_vergelle_tondini_incandescenti-web_image-300x300-1.webp\" alt=\"Application VLM500 sur fil machine et ronds incandescents\" class=\"wp-image-14960\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_vergelle_tondini_incandescenti-web_image-300x300-1.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_vergelle_tondini_incandescenti-web_image-300x300-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_vergelle_tondini_incandescenti-web_image-300x300-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_trafilato_metallico_barre_tubi-web_image-300x300-1.webp\" alt=\"Application VLM500 sur produits m\u00e9talliques \u00e9tir\u00e9s, barres et tubes\" class=\"wp-image-14964\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_trafilato_metallico_barre_tubi-web_image-300x300-1.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_trafilato_metallico_barre_tubi-web_image-300x300-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-appl_trafilato_metallico_barre_tubi-web_image-300x300-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\">Accessoires<\/h2>\n\n<p class=\"wp-block-paragraph\">La s\u00e9rie VLM500 peut \u00eatre compl\u00e9t\u00e9e par des accessoires pour le montage, l&rsquo;alignement, l&rsquo;affichage et la protection en environnements s\u00e9v\u00e8res.<\/p>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"453\" height=\"453\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-piastra_fissaggio_mpl1_encoder_ottici-web_image-453x453-1.webp\" alt=\"Plaque de fixation MPL1 pour VLM500\" class=\"wp-image-14949\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-piastra_fissaggio_mpl1_encoder_ottici-web_image-453x453-1.webp 453w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-piastra_fissaggio_mpl1_encoder_ottici-web_image-453x453-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-piastra_fissaggio_mpl1_encoder_ottici-web_image-453x453-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-piastra_fissaggio_mpl1_encoder_ottici-web_image-453x453-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 453px) 100vw, 453px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Plaque de fixation MPL1<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"453\" height=\"453\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-unita_allineamento_velocimetri_ottici-web_image-453x453-1.webp\" alt=\"Unit\u00e9 d&apos;alignement pour v\u00e9locim\u00e8tres optiques VLM500\" class=\"wp-image-14947\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-unita_allineamento_velocimetri_ottici-web_image-453x453-1.webp 453w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-unita_allineamento_velocimetri_ottici-web_image-453x453-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-unita_allineamento_velocimetri_ottici-web_image-453x453-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-unita_allineamento_velocimetri_ottici-web_image-453x453-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 453px) 100vw, 453px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Unit\u00e9 d&rsquo;alignement<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"453\" height=\"453\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-unita_raffreddamento_pressurizzazione_ac5-web_image-453x453-1.webp\" alt=\"Unit\u00e9 de refroidissement et de pressurisation AC5 pour VLM500\" class=\"wp-image-14944\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-unita_raffreddamento_pressurizzazione_ac5-web_image-453x453-1.webp 453w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-unita_raffreddamento_pressurizzazione_ac5-web_image-453x453-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-unita_raffreddamento_pressurizzazione_ac5-web_image-453x453-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-unita_raffreddamento_pressurizzazione_ac5-web_image-453x453-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 453px) 100vw, 453px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Refroidissement\/pressurisation AC5<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"453\" height=\"453\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-display_analogico_velocimentri_ottici-web_image-453x453-1.webp\" alt=\"Afficheur pour v\u00e9locim\u00e8tres optiques VLM500\" class=\"wp-image-14951\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-display_analogico_velocimentri_ottici-web_image-453x453-1.webp 453w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-display_analogico_velocimentri_ottici-web_image-453x453-1-300x300.webp 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-display_analogico_velocimentri_ottici-web_image-453x453-1-150x150.webp?crop=1 150w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-display_analogico_velocimentri_ottici-web_image-453x453-1-120x120.webp?crop=1 120w\" sizes=\"auto, (max-width: 453px) 100vw, 453px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Afficheur externe<\/p>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\">Questions fr\u00e9quentes<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-vlm500-1\"><strong class=\"schema-faq-question\">Comment le VLM500 mesure-t-il la vitesse sans toucher le mat\u00e9riau ?<\/strong> <p class=\"schema-faq-answer\">Le VLM500 utilise le principe optique du filtre spatial : une LED \u00e0 lumi\u00e8re blanche \u00e9claire la surface et un capteur CCD d\u00e9tecte la lumi\u00e8re r\u00e9fl\u00e9chie modul\u00e9e par la granularit\u00e9 du mat\u00e9riau. La fr\u00e9quence du signal est proportionnelle \u00e0 la vitesse et la longueur s&rsquo;obtient par int\u00e9gration, sans aucun contact ni glissement. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-vlm500-2\"><strong class=\"schema-faq-question\">Quelle est la pr\u00e9cision du VLM500 ?<\/strong> <p class=\"schema-faq-answer\">L&rsquo;incertitude de mesure est inf\u00e9rieure \u00e0 0,025 % \u00e0 la distance de travail nominale, inf\u00e9rieure \u00e0 0,05 % dans la plage de travail et inf\u00e9rieure \u00e0 0,2 % dans la plage de travail \u00e9tendue. La reproductibilit\u00e9 est inf\u00e9rieure \u00e0 0,025 %. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-vlm500-3\"><strong class=\"schema-faq-question\">Sur quels mat\u00e9riaux le VLM500 peut-il mesurer ?<\/strong> <p class=\"schema-faq-answer\">Gr\u00e2ce au r\u00e9glage automatique de l&rsquo;exposition et de la luminosit\u00e9, le VLM500 mesure sur presque toutes les surfaces et tous les mat\u00e9riaux : m\u00e9tal, papier, textiles, plastique, c\u00e9ramique, bois et caoutchouc.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-vlm500-4\"><strong class=\"schema-faq-question\">Quelles interfaces et sorties sont disponibles ?<\/strong> <p class=\"schema-faq-answer\">Le VLM500 peut \u00eatre configur\u00e9 avec des interfaces USB, RS-232, RS-422\/485, des bus de terrain Profibus DP, Profinet IO et EtherNet\/IP, ainsi qu&rsquo;une sortie codeur \u00e0 impulsions A\/B et une sortie analogique en courant (0\u202620 mA, 4\u202620 mA).<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-vlm500-5\"><strong class=\"schema-faq-question\">Quelles sont les versions du VLM500 et en quoi diff\u00e8rent-elles ?<\/strong> <p class=\"schema-faq-answer\">Les versions VLM500A, VLM500D, VLM500L et VLM500E sont disponibles ; elles se distinguent par la distance de travail (de 185 \u00e0 330 mm) et la plage de mesure (de 0,12 jusqu&rsquo;\u00e0 3000 m\/min en plage \u00e9tendue). La version compacte VLM502 est \u00e9galement disponible. <\/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-2\">Contacts &amp; Informations<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Contact pour informations g\u00e9n\u00e9rales : <a href=\"mailto:info@roder.it\">info@roder.it<\/a><br\/><br\/>Division Vision Industrielle de RODER : <a href=\"http:\/\/www.rodervision.com\">www.rodervision.com<\/a><br\/>Division Instruments RODER : <a href=\"http:\/\/www.rodervision.com\">www.innovacheck.com<\/a><br\/>En savoir plus sur RODER : <a href=\"https:\/\/roder.it\/contatti-roder-mail-indirizzo-stabilimento-oglianico-automazione-misure-controlli-industriali\/\">qui sommes-nous<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les informations contenues dans ce site web sont fournies \u00e0 titre purement informatif. Bien qu&rsquo;elles aient \u00e9t\u00e9 r\u00e9dig\u00e9es avec le plus grand soin, elles ne constituent ni une offre contractuelle ni un engagement de fourniture. Elles peuvent contenir des erreurs de transcription, de traduction ou de typographie. Pour des informations pr\u00e9cises et \u00e0 jour, nous vous prions de contacter directement notre soci\u00e9t\u00e9.   <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Note :<\/strong> Certaines images pr\u00e9sentes sur ce site web ont \u00e9t\u00e9 volontairement g\u00e9n\u00e9r\u00e9es \u00e0 l&rsquo;aide de l&rsquo;intelligence artificielle (IA). En effet, pour de nombreuses applications et projets, les photographies de l&rsquo;installation ou du syst\u00e8me r\u00e9el ne peuvent \u00eatre divulgu\u00e9es en raison d&rsquo;accords de confidentialit\u00e9, de clauses contractuelles et d&rsquo;accords de non-divulgation (NDA). <\/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>V\u00e9locim\u00e8tre et codeur optique sans contact pour la mesure continue de la vitesse et de la longueur sur bandes, t\u00f4les, tubes, fils et profil\u00e9s en mouvement. Pourquoi choisir le VLM500 Le VLM500 est un v\u00e9locim\u00e8tre et codeur optique sans contact pour la mesure continue de la vitesse et de la longueur d&rsquo;objets en mouvement. Il [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":0,"parent":18316,"menu_order":0,"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,"footnotes":""},"class_list":["post-26002","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>V\u00e9locim\u00e8tres optiques s\u00e9rie VLM500 - 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\/fr\/produits\/velocimetres-et-encodeurs-optiques\/velocimetres-optiques-serie-vlm500\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"V\u00e9locim\u00e8tres optiques s\u00e9rie VLM500 - RODER SRL\" \/>\n<meta property=\"og:description\" content=\"V\u00e9locim\u00e8tre et codeur optique sans contact pour la mesure continue de la vitesse et de la longueur sur bandes, t\u00f4les, tubes, fils et profil\u00e9s en mouvement. 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RODER\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"ASTECH VLM500: foto prodotto in assonometria, vista anteriore dell'encoder ottico","src":"https:\/\/i0.wp.com\/roder.it\/wp-content\/uploads\/2026\/06\/astech-velocimetri_ottici_vlm500-vlm500_foto_prodotto_assonometria_vista-web_image-510x510-1.webp?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":17953,"url":"https:\/\/roder.it\/fr\/technologies\/","url_meta":{"origin":26002,"position":2},"title":"Technologies","author":"GSM","date":"29 juin 2026","format":false,"excerpt":"La mesure de vitesse et de longueur sans contact est aujourd'hui une technologie cl\u00e9 pour le contr\u00f4le de process dans de nombreux secteurs industriels. 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Dans cette page, d'approche th\u00e9orique, nous comparons ces m\u00e9thodes pour en pr\u00e9ciser les avantages, les limites et les domaines d'application, en r\u00e9f\u00e9rence aux v\u00e9locim\u00e8tres et codeurs optiques ASTech. 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