{"id":181,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/optical-tachometer\/"},"modified":"2026-05-23T22:37:26","modified_gmt":"2026-05-23T22:37:26","slug":"optical-tachometer","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/km\/glossary\/optical-tachometer\/","title":{"rendered":"What is an Optical Tachometer? Light-Based Speed Sensor"},"content":{"rendered":"<h1>Understanding Optical Tachometers<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/balanset-1\/\" title=\"\u17a7\u1794\u1780\u179a\u178e\u17cd\u179c\u17b7\u1797\u17b6\u1782\u178f\u17bb\u179b\u17d2\u1799\u1797\u17b6\u1796 \u1793\u17b7\u1784\u179a\u17c6\u1789\u17d0\u179a\u1785\u179b\u17d0\u178f Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A full kit portable balancer and vibration analyzer\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/km\/product-category\/devices\/\" rel=\"tag\">\u17a7\u1794\u1780\u179a\u178e\u17cd<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/km\/product\/balanset-1\/\" title=\"\u17a7\u1794\u1780\u179a\u178e\u17cd\u179c\u17b7\u1797\u17b6\u1782\u178f\u17bb\u179b\u17d2\u1799\u1797\u17b6\u1796 \u1793\u17b7\u1784\u179a\u17c6\u1789\u17d0\u179a\u1785\u179b\u17d0\u178f Balanset-1A\">\u17a7\u1794\u1780\u179a\u178e\u17cd\u179c\u17b7\u1797\u17b6\u1782\u178f\u17bb\u179b\u17d2\u1799\u1797\u17b6\u1796 \u1793\u17b7\u1784\u179a\u17c6\u1789\u17d0\u179a\u1785\u179b\u17d0\u178f Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Add to cart: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/vibration-sensor\/\" title=\"\u17a7\u1794\u1780\u179a\u178e\u17cd\u1785\u17b6\u1794\u17cb\u179f\u1789\u17d2\u1789\u17b6\u179a\u17c6\u1789\u17d0\u179a\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A vibration sensor close-up\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/km\/product-category\/parts\/\" rel=\"tag\">\u1795\u17d2\u1793\u17c2\u1780<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/km\/product\/vibration-sensor\/\" title=\"\u17a7\u1794\u1780\u179a\u178e\u17cd\u1785\u17b6\u1794\u17cb\u179f\u1789\u17d2\u1789\u17b6\u179a\u17c6\u1789\u17d0\u179a\">\u17a7\u1794\u1780\u179a\u178e\u17cd\u1785\u17b6\u1794\u17cb\u179f\u1789\u17d2\u1789\u17b6\u179a\u17c6\u1789\u17d0\u179a<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Add to cart: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"\u17a7\u1794\u1780\u179a\u178e\u17cd\u1785\u17b6\u1794\u17cb\u179f\u1789\u17d2\u1789\u17b6\u17a2\u17bb\u1794\u1791\u17b7\u1780 (Laser Tachometer)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u17a7\u1794\u1780\u179a\u178e\u17cd\u1785\u17b6\u1794\u17cb\u179f\u1789\u17d2\u1789\u17b6\u17a2\u17bb\u1794\u1791\u17b7\u1780 (Laser Tachometer)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/km\/product-category\/parts\/\" rel=\"tag\">\u1795\u17d2\u1793\u17c2\u1780<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/km\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"\u17a7\u1794\u1780\u179a\u178e\u17cd\u1785\u17b6\u1794\u17cb\u179f\u1789\u17d2\u1789\u17b6\u17a2\u17bb\u1794\u1791\u17b7\u1780 (Laser Tachometer)\">\u17a7\u1794\u1780\u179a\u178e\u17cd\u1785\u17b6\u1794\u17cb\u179f\u1789\u17d2\u1789\u17b6\u17a2\u17bb\u1794\u1791\u17b7\u1780 (Laser Tachometer)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Add to cart: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/balanset-4\/\" title=\"\u1794\u17b6\u17a1\u17c2\u1793\u179f\u17c1\u178f-\u17e4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Vibromera rotor balancing kit: carry case, multi-channel signal conditioner, handheld analyzer, magnetic base, vibration sensors, and coiled cables.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/km\/product-category\/devices\/\" rel=\"tag\">\u17a7\u1794\u1780\u179a\u178e\u17cd<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/km\/product\/balanset-4\/\" title=\"\u1794\u17b6\u17a1\u17c2\u1793\u179f\u17c1\u178f-\u17e4\">\u1794\u17b6\u17a1\u17c2\u1793\u179f\u17c1\u178f-\u17e4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Add to cart: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/magnet-stand\/\" title=\"\u1781\u17d2\u1793\u17b6\u178f\u1798\u17c9\u17b6\u1789\u17c1\u1791\u17b7\u1780 -60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u1798\u17bc\u179b\u178a\u17d2\u178b\u17b6\u1793\u1798\u17c1\u178a\u17c2\u1780\u17d4\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/km\/product-category\/parts\/\" rel=\"tag\">\u1795\u17d2\u1793\u17c2\u1780<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/km\/product\/magnet-stand\/\" title=\"\u1781\u17d2\u1793\u17b6\u178f\u1798\u17c9\u17b6\u1789\u17c1\u1791\u17b7\u1780 -60-kgf\">\u1781\u17d2\u1793\u17b6\u178f\u1798\u17c9\u17b6\u1789\u17c1\u1791\u17b7\u1780 -60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" 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href=\"https:\/\/vibromera.eu\/km\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/reflective-tape\/\" title=\"\u1780\u17b6\u179f\u17c2\u178f\u1786\u17d2\u179b\u17bb\u17c7\u1794\u1789\u17d2\u1785\u17b6\u17c6\u1784\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u1780\u17b6\u179f\u17c2\u178f\u1786\u17d2\u179b\u17bb\u17c7\u1794\u1789\u17d2\u1785\u17b6\u17c6\u1784\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/km\/product-category\/parts\/\" rel=\"tag\">\u1795\u17d2\u1793\u17c2\u1780<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/km\/product\/reflective-tape\/\" title=\"\u1780\u17b6\u179f\u17c2\u178f\u1786\u17d2\u179b\u17bb\u17c7\u1794\u1789\u17d2\u1785\u17b6\u17c6\u1784\">\u1780\u17b6\u179f\u17c2\u178f\u1786\u17d2\u179b\u17bb\u17c7\u1794\u1789\u17d2\u1785\u17b6\u17c6\u1784<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Add to cart: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/km\/product\/dynamic-balancer-balanset-1a\/\" title=\"\u17a7\u1794\u1780\u179a\u178e\u17cd\u178f\u17bb\u179b\u17d2\u1799\u1797\u17b6\u1796\u1790\u17b6\u1798\u179c\u1793\u17d2\u178f &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kit contents with interface unit, sensors, tachometer and accessories\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/km\/product-category\/devices\/\" rel=\"tag\">\u17a7\u1794\u1780\u179a\u178e\u17cd<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/km\/product\/dynamic-balancer-balanset-1a\/\" title=\"\u17a7\u1794\u1780\u179a\u178e\u17cd\u178f\u17bb\u179b\u17d2\u1799\u1797\u17b6\u1796\u1790\u17b6\u1798\u179c\u1793\u17d2\u178f &quot;Balanset-1A&quot; OEM\">\u17a7\u1794\u1780\u179a\u178e\u17cd\u178f\u17bb\u179b\u17d2\u1799\u1797\u17b6\u1796\u1790\u17b6\u1798\u179c\u1793\u17d2\u178f &quot;Balanset-1A&quot; OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + VAT (if applicable)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/km\/wp-json\/wp\/v2\/glossary\/181?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Add to cart: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p>An <strong>optical tachometer<\/strong> is a non-contact speed-measurement device that uses light \u2014 a visible LED, a laser, or infrared \u2014 together with a photodetector to sense rotation, either by detecting reflections from a shaft marked with <a href=\"https:\/\/vibromera.eu\/km\/glossary\/reflective-tape\/\">reflective tape<\/a> or by sensing the interruption of a light beam. It does two jobs at once: it reports rotational speed in RPM, and it delivers a once-per-revolution timing pulse used as the <a href=\"https:\/\/vibromera.eu\/km\/glossary\/phase\/\">phase<\/a> reference in <a href=\"https:\/\/vibromera.eu\/km\/glossary\/vibration-analysis\/\">vibration analysis<\/a>, <a href=\"https:\/\/vibromera.eu\/km\/glossary\/field-balancing\/\">field balancing<\/a>, and <a href=\"https:\/\/vibromera.eu\/km\/glossary\/order-analysis\/\">order tracking<\/a>. The term covers both handheld laser units \u2014 the most common type \u2014 and permanently installed optical sensors built around various light sources. Optical tachometers are closely related to <a href=\"https:\/\/vibromera.eu\/km\/glossary\/laser-tachometer\/\">laser tachometers<\/a>, but the optical category is broader, taking in non-laser light sources as well.<\/p>\n<h2>1. Types of Optical Tachometer<\/h2>\n<h3>1.1 Reflective Type (Most Common)<\/h3>\n<ul>\n<li>Light source and detector share a single housing.<\/li>\n<li>The unit detects light reflected from a strip of reflective tape on the shaft.<\/li>\n<li>It works across a range of standoff distances, typically 50&ndash;500 mm.<\/li>\n<li>Handheld laser tachometers use this method.<\/li>\n<li>Simple, convenient, and portable \u2014 ideal for walk-up checks.<\/li>\n<\/ul>\n<h3>1.2 Through-Beam Type<\/h3>\n<ul>\n<li>Light source and detector are separate units facing one another.<\/li>\n<li>The rotating object interrupts the beam as it turns.<\/li>\n<li>Each blade, spoke, or feature that crosses the beam creates a pulse.<\/li>\n<li>This allows multi-pulse-per-revolution measurement when desired.<\/li>\n<li>Common in permanently installed systems.<\/li>\n<\/ul>\n<h3>1.3 Fibre-Optic Type<\/h3>\n<ul>\n<li>Light is transmitted and received through fibre-optic cables.<\/li>\n<li>The electronics sit remote from the measurement point.<\/li>\n<li>Useful in confined spaces, high electromagnetic interference, or explosive atmospheres.<\/li>\n<li>Intrinsically safe versions are available for hazardous areas.<\/li>\n<\/ul>\n<h2>2. Light Sources<\/h2>\n<p>The choice of emitter sets the working distance, spot size, and immunity to ambient light.<\/p>\n<ul>\n<li><strong>Laser (red or IR):<\/strong> a coherent, focused beam giving a long working distance and a small spot for precise positioning \u2014 the best performance and the usual choice in handheld units.<\/li>\n<li><strong>LED (visible or IR):<\/strong> incoherent light with a shorter working distance and larger spot, but lower cost; common in permanently installed sensors.<\/li>\n<li><strong>Infrared (IR):<\/strong> invisible to the eye, less affected by ambient light, and therefore better in bright environments, with the safety advantage of no visible laser beam.<\/li>\n<\/ul>\n<h2>3. Applications<\/h2>\n<h3>3.1 Speed Measurement<\/h3>\n<ul>\n<li>Quick RPM checks during condition-monitoring surveys.<\/li>\n<li>Verifying nameplate <a href=\"https:\/\/vibromera.eu\/km\/glossary\/running-speed\/\">running speed<\/a>.<\/li>\n<li>Detecting speed variation under load.<\/li>\n<li>Calculating <a href=\"https:\/\/vibromera.eu\/km\/glossary\/slip-frequency\/\">slip frequency<\/a> in induction motors.<\/li>\n<\/ul>\n<h3>3.2 Vibration-Analysis Phase Reference<\/h3>\n<p>This is the role that makes the optical tachometer indispensable to a vibration specialist. By timing the vibration waveform against the once-per-revolution pulse, the analyser converts a delay into a phase angle:<\/p>\n<ul>\n<li>It provides the trigger for phase-locked measurements.<\/li>\n<li>It is essential for <a href=\"https:\/\/vibromera.eu\/km\/glossary\/balancing\/\">\u178f\u17bb\u179b\u17d2\u1799\u1797\u17b6\u1796<\/a>, where phase determines the angular position of each <a href=\"https:\/\/vibromera.eu\/km\/glossary\/correction-weight\/\">correction weight<\/a>.<\/li>\n<li>It enables order tracking on variable-speed equipment.<\/li>\n<li>It supports <a href=\"https:\/\/vibromera.eu\/km\/glossary\/bode-plot\/\">Bode plot<\/a> generation during startup and coastdown.<\/li>\n<\/ul>\n<h3>3.3 Synchronous Measurements<\/h3>\n<ul>\n<li>Triggering a <a href=\"https:\/\/vibromera.eu\/km\/glossary\/stroboscope\/\">stroboscope<\/a> so a rotating mark appears frozen.<\/li>\n<li>Synchronising time-domain <a href=\"https:\/\/vibromera.eu\/km\/glossary\/synchronous-averaging\/\">averaging<\/a> to reject non-synchronous noise.<\/li>\n<li>Once-per-revolution sampling for order-based processing.<\/li>\n<\/ul>\n<h2>4. Advantages<\/h2>\n<p>The optical approach earns its place through three qualities:<\/p>\n<ul>\n<li><strong>Non-contact operation:<\/strong> nothing touches the rotating part, so there is no friction or loading on the shaft, no speed limit imposed by the sensor, and no wear of a sensing element.<\/li>\n<li><strong>Ease of use:<\/strong> apply a strip of tape, point, and measure \u2014 results are instant and the instrument is fully portable.<\/li>\n<li><strong>Versatility:<\/strong> it works on virtually any rotating object across a wide speed range, with an adjustable working distance, and suits both temporary surveys and permanent installations.<\/li>\n<\/ul>\n<h2>5. Installation and Environmental Factors<\/h2>\n<p>For a permanent installation, mount the sensor at the recommended standoff, align its optical axis perpendicular to the shaft, apply the reflective tape at an accessible spot, protect the optics from contamination with a window if necessary, and provide adjustment for distance and aim. Several environmental factors degrade performance and deserve attention:<\/p>\n<ul>\n<li><strong>Ambient light:<\/strong> bright sunlight can swamp the detector \u2014 use an IR source or shield the target.<\/li>\n<li><strong>Contamination:<\/strong> oil mist and dust on the optics weaken the signal.<\/li>\n<li><strong>Vibration:<\/strong> mount the sensor securely so it does not vibrate relative to the shaft.<\/li>\n<li><strong>Temperature:<\/strong> stay within the sensor&#8217;s rating, typically &minus;20 to +60&nbsp;&deg;C.<\/li>\n<\/ul>\n<h2>6. Best Practices and Troubleshooting<\/h2>\n<p>For reliable handheld readings, brace against a stable surface, aim at the centre of the reflective tape, hold the manufacturer&#8217;s recommended distance, shield from bright light, and take several readings to confirm consistency. When the pulse is used as a phase reference, treat the tape position as the 0&deg; mark \u2014 note and document it \u2014 ensure a stable, clean signal, verify a single pulse per revolution, and check the waveform on an oscilloscope if anything looks doubtful. The common faults map to simple fixes:<\/p>\n<ul>\n<li><strong>No signal:<\/strong> check standoff distance, clean the optics, confirm the tape is present, and check the battery.<\/li>\n<li><strong>Unstable reading:<\/strong> reduce the distance, improve the tape, and shield from stray light.<\/li>\n<li><strong>Multiple pulses (doubled RPM):<\/strong> remove extra tape pieces, keyway glints, or other reflective marks that fire a second pulse per turn.<\/li>\n<\/ul>\n<p>On a portable balancer the optical tachometer is not an accessory but the timing backbone of the whole workflow. The <a href=\"https:\/\/vibromera.eu\/km\/%e1%9e%95%e1%9e%9b%e1%9e%b7%e1%9e%8f%e1%9e%95%e1%9e%9b\/balanset-1\/\">Balanset-1A<\/a>, for example, ships with an optical laser tachometer that triggers from a small piece of reflective tape, working at 50&ndash;500 mm standoff across a 250&ndash;90,000 rpm range; its once-per-revolution pulse supplies the phase reference the software needs to compute each balance weight and to verify the <a href=\"https:\/\/vibromera.eu\/km\/glossary\/residual-unbalance\/\">residual unbalance<\/a> afterwards. Conceptually it behaves like a non-contact <a href=\"https:\/\/vibromera.eu\/km\/glossary\/photoelectric-sensor\/\">photoelectric sensor<\/a> and serves the same function as a permanently installed <a href=\"https:\/\/vibromera.eu\/km\/glossary\/keyphasor\/\">keyphasor<\/a>.<\/p>\n<p>Optical tachometers \u2014 laser types in particular \u2014 have become indispensable in vibration analysis and balancing. Their non-contact operation, ease of use, accuracy, and dual function as both speed sensor and phase reference make them essential tools for vibration specialists, reliability engineers, and maintenance technicians working on rotating equipment in the field.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/km\/glossary\/\">\u2190 Back to Main Index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Learn about optical tachometers, non-contact speed sensors using visible or infrared light to detect rotation, providing RPM and phase reference for vibration analysis.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,113],"tags":[],"class_list":["post-181","glossary","type-glossary","status-publish","hentry","category-glossary","category-measurement"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/km\/wp-json\/wp\/v2\/glossary\/181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/km\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/km\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/km\/wp-json\/wp\/v2\/glossary\/181\/revisions"}],"predecessor-version":[{"id":101292,"href":"https:\/\/vibromera.eu\/km\/wp-json\/wp\/v2\/glossary\/181\/revisions\/101292"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/km\/wp-json\/wp\/v2\/media?parent=181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/km\/wp-json\/wp\/v2\/categories?post=181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/km\/wp-json\/wp\/v2\/tags?post=181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}