{"id":271,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/threshold\/"},"modified":"2026-05-23T22:31:45","modified_gmt":"2026-05-23T22:31:45","slug":"threshold","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/bs\/glossary\/threshold\/","title":{"rendered":"What is a Threshold? Decision Boundary Value"},"content":{"rendered":"<h1>Understanding Thresholds in Condition Monitoring<\/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\/bs\/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\/bs\/product\/balanset-1\/\" title=\"Prijenosni balanser i analizator vibracija 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\/bs\/product-category\/devices\/\" rel=\"tag\">Ure\u0111aji<\/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\/bs\/product\/balanset-1\/\" title=\"Prijenosni balanser i analizator vibracija Balanset-1A\">Prijenosni balanser i analizator vibracija 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=\"\/bs\/wp-json\/wp\/v2\/glossary\/271?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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/wp-json\/wp\/v2\/glossary\/271?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=\"\">Dodaj u korpu<\/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\/bs\/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\/bs\/product\/vibration-sensor\/\" title=\"Senzor vibracija\">\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\/bs\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/bs\/product\/vibration-sensor\/\" title=\"Senzor vibracija\">Senzor vibracija<\/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=\"\/bs\/wp-json\/wp\/v2\/glossary\/271?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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/wp-json\/wp\/v2\/glossary\/271?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=\"\">Dodaj u korpu<\/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\/bs\/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\/bs\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"opti\u010dki senzor (laserski tahometar)\">\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=\"opti\u010dki senzor (laserski tahometar)\" 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\/bs\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/bs\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"opti\u010dki senzor (laserski tahometar)\">opti\u010dki senzor (laserski tahometar)<\/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=\"\/bs\/wp-json\/wp\/v2\/glossary\/271?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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/wp-json\/wp\/v2\/glossary\/271?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=\"\">Dodaj u korpu<\/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\/bs\/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\/bs\/product\/balanset-4\/\" title=\"Balanset-4\">\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\/bs\/product-category\/devices\/\" rel=\"tag\">Ure\u0111aji<\/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\/bs\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/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=\"\/bs\/wp-json\/wp\/v2\/glossary\/271?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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/wp-json\/wp\/v2\/glossary\/271?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=\"\">Dodaj u korpu<\/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\/bs\/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\/bs\/product\/magnet-stand\/\" title=\"Magnetno postolje Insize-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=\"Magnet base.\" 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\/bs\/product-category\/parts\/\" 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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=\"\">Dodaj u korpu<\/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>A <strong>threshold<\/strong> \u2014 also called a limit, setpoint, or trigger value \u2014 is a predefined level that separates normal from abnormal behaviour in a <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/condition-monitoring\/\">condition monitoring<\/a> system. When a measured parameter such as <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/vibration\/\">vibration<\/a>, temperature, or pressure crosses its threshold, it triggers an action: an alarm notification, an automatic data capture, a work-order, or in the most serious case an equipment shutdown. Thresholds are the decision boundaries that turn a continuous stream of measurement data into discrete, actionable events, letting an automated system flag the few exceptions that genuinely need human attention.<\/p>\n<p>Choosing those boundaries well is fundamental to a monitoring programme&#8217;s success. Every threshold is a compromise between <strong>sensitivity<\/strong> (catching problems early) and <strong>specificity<\/strong> (not crying wolf), and it should reflect the equipment&#8217;s criticality, the failure modes you expect, and how much operational risk the site is willing to carry.<\/p>\n<h2>1. Types of Threshold<\/h2>\n<p>Thresholds differ in <em>what<\/em> they compare a reading against. Four families cover almost every monitoring scheme, and mature programmes often run several in parallel on the same machine.<\/p>\n<h3>Absolute thresholds<\/h3>\n<ul>\n<li>Fixed values in engineering units (mm\/s, \u00b0C, bar) \u2014 for example, alarm if velocity exceeds 7.1 mm\/s.<\/li>\n<li>Drawn from standards such as <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/iso-20816-1\/\">ISO 20816<\/a> (the modern successor to ISO 10816), equipment specifications, or accumulated experience.<\/li>\n<li>The same limit applies regardless of the machine&#8217;s individual history \u2014 simple to understand, document and defend.<\/li>\n<\/ul>\n<h3>Relative thresholds<\/h3>\n<ul>\n<li>Defined as a multiple of a <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/baseline\/\">baseline<\/a> or reference reading \u2014 for example, alarm if vibration exceeds 3\u00d7 baseline.<\/li>\n<li>Adapts to each machine&#8217;s own healthy signature, so it is more sensitive to genuine change.<\/li>\n<li>Only as good as the baseline behind it, so it depends on sound <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/baseline-data\/\">baseline data<\/a>.<\/li>\n<\/ul>\n<h3>Rate-of-change thresholds<\/h3>\n<ul>\n<li>Watch how fast a value is moving rather than its level \u2014 for example, alarm if vibration rises more than 50% in a week.<\/li>\n<li>Catch accelerating deterioration early and are independent of the absolute reading, complementing classic <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/trend-analysis\/\">trend analysis<\/a>.<\/li>\n<\/ul>\n<h3>Statistical thresholds<\/h3>\n<ul>\n<li>Derived from the statistics of historical data \u2014 for example, alarm if a value exceeds the mean plus three standard deviations.<\/li>\n<li>Account for normal scatter and adapt to process variation, but need enough history to be trustworthy.<\/li>\n<\/ul>\n<h2>2. Approaches to Setting Thresholds<\/h2>\n<p>Where the <em>numbers themselves<\/em> come from is a separate question from the type. Three approaches are common, and they are frequently blended.<\/p>\n<h3>Standards-based<\/h3>\n<ul>\n<li>Uses published zone boundaries \u2014 ISO 20816 vibration zones, or industry codes such as API and NEMA.<\/li>\n<li><strong>Advantages:<\/strong> proven, documented and easy to justify to an auditor.<\/li>\n<li><strong>Limitations:<\/strong> generic by design; a broad standard cannot fit every machine and mounting.<\/li>\n<\/ul>\n<h3>Experience-based<\/h3>\n<ul>\n<li>Built from a site&#8217;s own record of failures and good runs, refined over years.<\/li>\n<li><strong>Advantages:<\/strong> genuinely specific to the equipment and its duty.<\/li>\n<li><strong>Limitations:<\/strong> takes time and expertise to accumulate.<\/li>\n<\/ul>\n<h3>Risk-based<\/h3>\n<ul>\n<li>Sets the limit according to the consequence of failure: tighter thresholds on high-consequence assets, looser ones where a stoppage is cheap.<\/li>\n<li>Aligns the monitoring effort with <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/critical-machinery\/\">critical machinery<\/a> priorities and optimises total programme cost against risk.<\/li>\n<\/ul>\n<h2>3. The Alarm Hierarchy<\/h2>\n<p>A single threshold rarely suffices. Most systems stack several so that a developing fault is met with a graduated response rather than a single binary trip:<\/p>\n<ul>\n<li>A first <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/warning-level\/\">warning level<\/a> flags an early, watch-this deviation.<\/li>\n<li>An <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/alarm-level\/\">alarm level<\/a> calls for planned intervention before the next opportunity is lost.<\/li>\n<li>A <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/trip-level\/\">trip level<\/a> drives an automatic <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/shutdown\/\">shutdown<\/a> to prevent catastrophic damage.<\/li>\n<\/ul>\n<p>This layering buys decision time: the gap between the first warning and the trip is the lead time the maintenance team has to act, which is the whole point of <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/early-warning\/\">early-warning<\/a> monitoring.<\/p>\n<h2>4. Common Pitfalls<\/h2>\n<h3>Too tight (over-sensitive)<\/h3>\n<ul>\n<li><strong>Result:<\/strong> a flood of false alarms.<\/li>\n<li><strong>Effect:<\/strong> alarm fatigue and wasted investigation time \u2014 and the real danger that a genuine alarm is ignored in the noise.<\/li>\n<li><strong>Fix:<\/strong> relax the limit guided by the measured false-alarm rate.<\/li>\n<\/ul>\n<h3>Too loose (over-lenient)<\/h3>\n<ul>\n<li><strong>Result:<\/strong> problems caught late.<\/li>\n<li><strong>Effect:<\/strong> shorter lead time, higher repair cost, sometimes failure before any alarm at all.<\/li>\n<li><strong>Fix:<\/strong> tighten the limit and increase monitoring frequency.<\/li>\n<\/ul>\n<h3>One-size-fits-all<\/h3>\n<ul>\n<li>Applying the same limit to dissimilar machines ignores their differences \u2014 it is simultaneously too tight for some and too loose for others. Equipment-specific thresholds are almost always preferable.<\/li>\n<\/ul>\n<h2>5. Optimisation, Validation and Documentation<\/h2>\n<p>A threshold is not set once and forgotten; it is tuned over the life of the programme.<\/p>\n<ul>\n<li><strong>Initial setting:<\/strong> start from a standard or a conservative estimate, record the rationale, and plan to refine it.<\/li>\n<li><strong>Tuning:<\/strong> count true versus false alarms, aiming for under ~10% false alarms while still catching over ~90% of real problems; tighten if you are missing faults, loosen if you are drowning in nuisance trips, and document every change.<\/li>\n<li><strong>Validation:<\/strong> after each real failure, ask whether the threshold gave adequate warning and whether any false alarms wasted resources, then adjust against those outcomes.<\/li>\n<li><strong>Governance:<\/strong> keep a threshold database holding current values, change history and rationale for every machine, under a formal change-control process with engineering review and communication to operations.<\/li>\n<\/ul>\n<p>Thresholds can be applied to more than the overall level, too: dedicated limits on specific spectral lines such as <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/bearing-fault-frequencies\/\">bearing fault frequencies<\/a> or 1\u00d7 and 2\u00d7 <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/running-speed\/\">running speed<\/a> give earlier, more specific fault detection, and limits on derived metrics such as <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/crest-factor\/\">crest factor<\/a> and <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/kurtosis\/\">kurtosis<\/a> can flag impacting bearing damage long before the broadband level moves.<\/p>\n<h2>6. Thresholds in Field Balancing<\/h2>\n<p>The threshold concept reaches beyond surveillance into corrective work. When a rotor is balanced, the acceptance limit is itself a threshold: the job is finished only when the measured <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/residual-unbalance\/\">residual unbalance<\/a> \u2014 or the resulting vibration \u2014 drops below the chosen tolerance. A portable two-channel analyser such as the <a href=\"https:\/\/vibromera.eu\/bs\/proizvod\/balanset-1\/\">Balanset-1A<\/a> measures the 1\u00d7 amplitude before and after correction and confirms the final reading sits inside the target <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/balancing-tolerance\/\">balancing tolerance<\/a> band, which is exactly a pass\/fail threshold applied to a single repair rather than to continuous monitoring.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/bs\/glossary\/\">\u2190 Back to Main Index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Learn about thresholds in vibration monitoring, decision boundaries separating acceptable from unacceptable conditions, triggering alarms and maintenance actions.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-271","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/glossary\/271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/glossary\/271\/revisions"}],"predecessor-version":[{"id":101262,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/glossary\/271\/revisions\/101262"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/media?parent=271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/categories?post=271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/tags?post=271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}