{"id":244,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/sound-pressure-level\/"},"modified":"2026-05-23T22:31:25","modified_gmt":"2026-05-23T22:31:25","slug":"sound-pressure-level","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/da\/glossary\/sound-pressure-level\/","title":{"rendered":"Hvad er lydtryksniveau? St\u00f8jm\u00e5ling"},"content":{"rendered":"<h1>Forst\u00e5else af lydtryksniveau<\/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\/da\/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\/da\/product\/balanset-1\/\" title=\"B\u00e6rbart afbalanceringsapparat og vibrationsanalysator 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 komplet s\u00e6t med b\u00e6rbar afbalanceringsenhed og vibrationsanalysator\" 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\/da\/product-category\/devices\/\" rel=\"tag\">Enheder<\/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\/da\/product\/balanset-1\/\" title=\"B\u00e6rbart afbalanceringsapparat og vibrationsanalysator Balanset-1A\">B\u00e6rbart afbalanceringsapparat og vibrationsanalysator 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> + moms (hvis relevant)<\/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=\"\/da\/wp-json\/wp\/v2\/glossary\/244?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=\"Tilf\u00f8j til kurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Tilf\u00f8j til kurv\" 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=\"\/da\/wp-json\/wp\/v2\/glossary\/244?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=\"L\u00e6g i kurv: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d er blevet tilf\u00f8jet til din kurv\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Tilf\u00f8j til kurv<\/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\/da\/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\/da\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">\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 vibrationssensor i n\u00e6rbillede\" 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\/da\/product-category\/parts\/\" rel=\"tag\">Dele<\/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\/da\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">Vibrationssensor<\/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> + moms (hvis relevant)<\/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=\"\/da\/wp-json\/wp\/v2\/glossary\/244?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=\"Tilf\u00f8j til kurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Tilf\u00f8j til kurv\" 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=\"\/da\/wp-json\/wp\/v2\/glossary\/244?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=\"L\u00e6g i kurv: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d er blevet tilf\u00f8jet til din kurv\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Tilf\u00f8j til kurv<\/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\/da\/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\/da\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (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=\"Optisk sensor (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\/da\/product-category\/parts\/\" rel=\"tag\">Dele<\/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\/da\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (laser-tachometer)\">Optisk sensor (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> + moms (hvis relevant)<\/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=\"\/da\/wp-json\/wp\/v2\/glossary\/244?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=\"Tilf\u00f8j til kurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Tilf\u00f8j til kurv\" 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=\"\/da\/wp-json\/wp\/v2\/glossary\/244?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=\"L\u00e6g i kurv: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d er blevet tilf\u00f8jet til din kurv\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Tilf\u00f8j til kurv<\/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\/da\/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\/da\/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 rotorbalanceringss\u00e6t: b\u00e6retaske, flerkanals signalbehandler, h\u00e5ndholdt analysator, magnetisk base, vibrationssensorer og spiralkabler.\" 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\/da\/product-category\/devices\/\" rel=\"tag\">Enheder<\/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\/da\/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> + moms (hvis relevant)<\/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=\"\/da\/wp-json\/wp\/v2\/glossary\/244?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=\"Tilf\u00f8j til kurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Tilf\u00f8j til kurv\" 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=\"\/da\/wp-json\/wp\/v2\/glossary\/244?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=\"L\u00e6g i kurv: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d er blevet tilf\u00f8jet til din kurv\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Tilf\u00f8j til kurv<\/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\/da\/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\/da\/product\/magnet-stand\/\" title=\"Magnetisk stativ 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=\"Magnetbase.\" 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 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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\/da\/product-category\/devices\/\" rel=\"tag\">Enheder<\/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\/da\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balancer &quot;Balanset-1A&quot; OEM\">Dynamisk balancer \"Balanset-1A\" 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> + moms (hvis relevant)<\/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=\"\/da\/wp-json\/wp\/v2\/glossary\/244?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=\"Tilf\u00f8j til kurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Tilf\u00f8j til kurv\" 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=\"\/da\/wp-json\/wp\/v2\/glossary\/244?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=\"L\u00e6g i kurv: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d er blevet tilf\u00f8jet til din kurv\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Tilf\u00f8j til kurv<\/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><strong>Lydtryksniveau<\/strong> (SPL) er det logaritmiske m\u00e5l for lydtryk i forhold til en reference, udtrykt i decibel (dB). For maskiner angiver det st\u00f8jemissionsintensiteten \u2014 den lydstyrke, som en maskine udsender \u2014 m\u00e5lt med en mikrofon eller en lydniveaum\u00e5ler i en angivet afstand. SPL er t\u00e6t forbundet med <a href=\"https:\/\/vibromera.eu\/da\/glossary\/vibration\/\">vibrationer<\/a>, fordi vibrerende overflader udstr\u00e5ler lyd, hvilket g\u00f8r akustiske m\u00e5linger til et naturligt supplement til <a href=\"https:\/\/vibromera.eu\/da\/glossary\/vibration-analysis\/\">Vibrationsanalyse<\/a> til vurdering af maskinens tilstand \u2014 is\u00e6r med henblik p\u00e5 aerodynamiske fejl, gearfejl og lejefejl, der afgiver karakteristiske tonale eller bredb\u00e5ndssignaturer.<\/p>\n<p>Selvom SPL prim\u00e6rt er et m\u00e5l for arbejdsmilj\u00f8 og milj\u00f8 \u2014 h\u00f8rev\u00e6rn, st\u00f8jregler, gr\u00e6nsev\u00e6rdier for omgivelserne \u2014 har det en reel diagnostisk v\u00e6rdi. \u00c6ndringer i st\u00f8jniveauet g\u00e5r ofte forud for eller ledsager mekanisk slitage, og et akustisk spektrum kan identificere specifikke fejl gennem frekvensm\u00f8nstre, der afspejler dem, man ser ved vibrationer <a href=\"https:\/\/vibromera.eu\/da\/glossary\/spectrum\/\">spektrum<\/a>.<\/p>\n<h2>1. Matematikken: Hvorfor decibel?<\/h2>\n<p>SPL defineres som:<\/p>\n<blockquote><p><strong>SPL (dB) = 20 \u00d7 log\u2081\u2080(P \/ P\u2080)<\/strong>, hvor P er det m\u00e5lte lydtryk i pascal, og P\u2080 = 20 \u00b5Pa, hvilket er det referencetryk, der svarer til t\u00e6rsklen for menneskets h\u00f8relse.<\/p><\/blockquote>\n<p>Logaritmen bruges af en praktisk grund: \u00d8ret kan h\u00e5ndtere et enormt trykomr\u00e5de \u2014 fra den svageste h\u00f8rbare lyd til smertet\u00e6rsklen, som sp\u00e6nder over en faktor p\u00e5 omkring en million i tryk. En logaritmisk skala komprimerer dette omr\u00e5de til et overskueligt interval p\u00e5 0\u2013120+ dB. Det forklarer ogs\u00e5 den regneregel, der overrasker nybegyndere: da skalaen er logaritmisk, giver en fordobling af lyd <em>magt<\/em> tilf\u00f8jer kun 3 dB, og to maskiner med samme lydstyrke er tilsammen 3 dB h\u00f8jere end \u00e9n \u2014 ikke dobbelt s\u00e5 h\u00f8jt. Sammenl\u00e6gning af lydkilder er derfor en logaritmisk sum, som let kan h\u00e5ndteres med vores <a href=\"https:\/\/vibromera.eu\/da\/calculators\/noise-level-addition\/\">St\u00f8jniveautilf\u00f8jelsesberegner<\/a> eller konverteres mellem tryk og decibel ved hj\u00e6lp af <a href=\"https:\/\/vibromera.eu\/da\/calculators\/sound-level-converter\/\">Lydniveaukonverter<\/a>.<\/p>\n<p>Som en grov vejledning til skalaen: 0 dB er h\u00f8rbarhedst\u00e6rsklen; 30\u201340 dB svarer til et stille rum; 60\u201370 dB til en normal samtale; 80\u201390 dB til st\u00f8jende maskiner, hvor det anbefales at bruge h\u00f8rev\u00e6rn; 100\u2013110 dB til meget st\u00f8jende maskiner, hvor det er p\u00e5kr\u00e6vet; og 120 dB og derover er smertet\u00e6rsklen, hvor der er risiko for \u00f8jeblikkelig h\u00f8reskade.<\/p>\n<h2>2. Hvordan m\u00e5les SPL?<\/h2>\n<h3>Lydm\u00e5lere<\/h3>\n<ul>\n<li>En pr\u00e6cisionsmikrofon, der sender signalet til et m\u00e5leinstrument, der anvender frekvens- og tidsv\u00e6gtning og viser resultatet i dB SPL.<\/li>\n<li>M\u00e5leinstrumenter klassificeres som klasse 1 (pr\u00e6cisionsinstrumenter) eller klasse 2 (almindelige instrumenter) i henhold til <strong>IEC 61672<\/strong>.<\/li>\n<\/ul>\n<h3>M\u00e5leafstand<\/h3>\n<ul>\n<li><strong>Near field:<\/strong> mindre end 1 m fra kilden, hvilket er nyttigt til at lokalisere en st\u00f8jende komponent.<\/li>\n<li><strong>Far field:<\/strong> over 1 m, hvor der er tale om frifeltforhold; 1 m er en almindelig standard for maskiner.<\/li>\n<li>I et \u00e5bent omr\u00e5de falder lydtryksniveauet med ca. <strong>6 dB for hver fordobling af afstanden<\/strong> \u2014 grundlaget for <a href=\"https:\/\/vibromera.eu\/da\/calculators\/noise-distance-attenuation\/\">St\u00f8jafstandsd\u00e6mpningsberegner<\/a>.<\/li>\n<\/ul>\n<h3>Frekvensv\u00e6gtning<\/h3>\n<ul>\n<li><strong>A-v\u00e6gtning (dBA):<\/strong> tilpasser responsen, s\u00e5 den afspejler \u00f8rets f\u00f8lsomhed; den absolut mest udbredte metode til st\u00f8jm\u00e5ling.<\/li>\n<li><strong>C-v\u00e6gtning (dBC):<\/strong> relativt flad, hvilket bevarer lavfrekvensindholdet for spids- og impulsst\u00f8j.<\/li>\n<li><strong>Z \/ line\u00e6r (dBZ):<\/strong> ingen v\u00e6gtning; alle frekvenser v\u00e6gter lige meget, hvilket foretr\u00e6kkes til tekniske analyser.<\/li>\n<\/ul>\n<h2>3. Forholdet til vibrationer<\/h2>\n<h3>Lydudbredelse fra en vibrerende overflade<\/h3>\n<ul>\n<li>En vibrerende overflade trykker p\u00e5 den omgivende luft og udsender lydb\u00f8lger.<\/li>\n<li>Den udstr\u00e5lede lydeffekt stiger omtrent proportionalt med <strong>hastighed\u00b2 \u00d7 areal<\/strong>, s\u00e5 st\u00f8rre overflade <a href=\"https:\/\/vibromera.eu\/da\/glossary\/velocity\/\">hastighed<\/a> betyder som regel et h\u00f8jere lydtrykniveau.<\/li>\n<li>Forbindelsen er dog ikke helt entydig \u2014 str\u00e5lingseffektiviteten varierer st\u00e6rkt afh\u00e6ngigt af frekvensen og panelets geometri, s\u00e5 to overflader, der vibrerer p\u00e5 samme m\u00e5de, kan udstr\u00e5le p\u00e5 helt forskellige m\u00e5der.<\/li>\n<\/ul>\n<h3>Diagnostisk sammenh\u00e6ng<\/h3>\n<ul>\n<li><strong>Problemer med lejer:<\/strong> h\u00f8jfrekvent hv\u00e6sende eller knirrende lyd.<\/li>\n<li><strong>Gear problems:<\/strong> en karakteristisk hyletone ved indgrebsfrekvensen.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/da\/glossary\/unbalance\/\">Ubalance<\/a>:<\/strong> en lavfrekvent rumlen ved 1\u00d7 <a href=\"https:\/\/vibromera.eu\/da\/glossary\/running-speed\/\">l\u00f8behastighed<\/a>.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/da\/glossary\/cavitation\/\">Kavitation<\/a>:<\/strong> tilf\u00e6ldige knitrelyde eller sm\u00e6ld, n\u00e5r dampbobler brister.<\/li>\n<\/ul>\n<h2>4. Akustisk spektrumanalyse<\/h2>\n<p>Ligesom ved vibrationer opdeler omdannelsen af lydsignalet til et frekvensspektrum en kompleks st\u00f8j i dele, der kan diagnosticeres.<\/p>\n<h3>Tonale komponenter<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/da\/glossary\/gear-mesh-frequency\/\">Gearnet<\/a>:<\/strong> en ren tone ved tandkontaktfrekvensen, ofte med <a href=\"https:\/\/vibromera.eu\/da\/glossary\/sidebands\/\">sideb\u00e5nd<\/a>.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/da\/glossary\/blade-passing-frequency\/\">Blade passing<\/a>:<\/strong> en tone ved ventilatorens eller kompressorens bladfrekvens.<\/li>\n<li><strong>Elektrisk:<\/strong> en 120\/100 Hz-brummen fra motorer ved det dobbelte af netfrekvensen.<\/li>\n<li><strong>Bearing tones:<\/strong> a family of <a href=\"https:\/\/vibromera.eu\/da\/glossary\/bearing-fault-frequencies\/\">lejefejlsfrekvens<\/a> harmonics.<\/li>\n<\/ul>\n<h3>Bredbandssst\u00f8j<\/h3>\n<ul>\n<li><strong>Aerodynamisk:<\/strong> turbulens og str\u00f8mningsst\u00f8j.<\/li>\n<li><strong>Kavitation:<\/strong> tilf\u00e6ldigt sammenbrud af bobler over et bredt b\u00e5nd.<\/li>\n<li><strong>Lejeskade:<\/strong> en stigning i bredb\u00e5ndshastigheden, efterh\u00e5nden som overfladerne forringes.<\/li>\n<li><strong>Friktion:<\/strong> kontinuerlig tilf\u00e6ldig emission.<\/li>\n<\/ul>\n<h2>5. Anvendelser<\/h2>\n<p>SPL-m\u00e5ling har sin berettigelse inden for fire praktiske anvendelsesomr\u00e5der:<\/p>\n<ul>\n<li><strong>Tilstandsoverv\u00e5gning:<\/strong> som et supplement til vibrationsdata, idet st\u00f8j ofte er det f\u00f8rste tegn p\u00e5 en lejefejl \u2014 st\u00f8jniveauet kan stige, f\u00f8r der opst\u00e5r vibrationer i huset \u2014 og til at overv\u00e5ge slitage p\u00e5 gearet gennem \u00e6ndringer i st\u00f8jkvaliteten.<\/li>\n<li><strong>Kvalitetskontrol:<\/strong> godkendelsestest af nyt udstyr i forhold til st\u00f8jgr\u00e6nser, kontrol efter reparation samt kvalitetskontrol af produkter i produktionen.<\/li>\n<li><strong>Regulatorisk overholdelse:<\/strong> gr\u00e6nsev\u00e6rdier for erhvervsm\u00e6ssig eksponering (OSHA, EU-direktiver), gr\u00e6nsev\u00e6rdier for st\u00f8j i beboelsesomr\u00e5der og udstyrsspecifikationer, underst\u00f8ttet af v\u00e6rkt\u00f8jer til beregning af eksponeringsdoser s\u00e5som <a href=\"https:\/\/vibromera.eu\/da\/calculators\/noise-exposure-calculator\/\">St\u00f8jeksponeringsberegner<\/a>.<\/li>\n<li><strong>Fejlfinding:<\/strong> lokalisering af st\u00f8jkilder, rangordning af de faktorer, der bidrager mest til den samlede st\u00f8j i anl\u00e6gget, samt dokumentation af effekten af st\u00f8jd\u00e6mpende foranstaltninger.<\/li>\n<\/ul>\n<p>Som en tommelfingerregel for, hvad man kan forvente, ligger de typiske A-v\u00e6gtede st\u00f8jniveauer i 1 meters afstand p\u00e5 ca. 70\u201385 dBA for elmotorer, 75\u201390 dBA for centrifugalpumper, 80\u2013100 dBA for ventilatorer og bl\u00e6sere, 75\u201395 dBA for gearkasser, 85\u2013105 dBA for kompressorer og 95\u2013110 dBA for dieselmotorer.<\/p>\n<h2>6. St\u00f8j som diagnostisk indikator<\/h2>\n<p>Der er to former for \u00e6ndringer, der er vigtige, n\u00e5r man lytter til en maskine over tid. En <strong>rising level<\/strong> tyder p\u00e5 slitage af lejer (skurrende eller hylende lyde), slitage af gear (en stadig kraftigere hylende lyd), sm\u00f8reproblemer (stigende friktionsst\u00f8j) eller <a href=\"https:\/\/vibromera.eu\/da\/glossary\/looseness\/\">l\u00f8shed<\/a> (raslen). En <strong>\u00e6ndring i karakter<\/strong> \u2014 nye toner, der dukker op, frekvenser, der skifter, samt intermitterende eller modulerende lyde \u2014 er lige s\u00e5 vigtige, da de er tegn p\u00e5 et begyndende problem, selvom den samlede dBA-v\u00e6rdi n\u00e6sten ikke har \u00e6ndret sig.<\/p>\n<p>Akustiske metoder har dog sine begr\u00e6nsninger: En lydtryksm\u00e5ler registrerer <em>everything<\/em> i omr\u00e5det, s\u00e5 st\u00f8j fra en nabomaskine, refleksioner fra v\u00e6gge og baggrundsst\u00f8j fra anl\u00e6gget forvrider m\u00e5leresultatet p\u00e5 en m\u00e5de, som en kontaktsensor undg\u00e5r. Derfor anvender teknikerne direkte vibrationsm\u00e5ling, n\u00e5r de skal bekr\u00e6fte en mekanisk fejl og is\u00e6r n\u00e5r de skal udbedre den. N\u00e5r en st\u00f8jm\u00e5ling tyder p\u00e5 ubalance, anvender man en b\u00e6rbar tokanalsanalysator som f.eks. <a href=\"https:\/\/vibromera.eu\/da\/vare-2\/balanset-1\/\">Balanset-1A<\/a> kan bekr\u00e6fte det ved at m\u00e5le 1\u00d7-amplituden og -fasen ved lejet og derefter afbalancere rotoren p\u00e5 stedet \u2014 og dermed isolere den egentlige mekaniske kilde, som mikrofonen kun kunne antyde.<\/p>\n<h2>7. M\u00e5lestandarder<\/h2>\n<ul>\n<li><strong>IEC 61672:<\/strong> specifikation for lydniveaum\u00e5lere.<\/li>\n<li><strong>ISO 3744:<\/strong> bestemmelse af lydeffekt ud fra lydtryk.<\/li>\n<li><strong>ISO 1680:<\/strong> St\u00f8jtestkode for roterende elektriske maskiner.<\/li>\n<li><strong>ANSI S12.19:<\/strong> m\u00e5ling af maskinst\u00f8j.<\/li>\n<\/ul>\n<p>Sammen med vibrationsm\u00e5linger giver SPL et fuldst\u00e6ndigt billede af maskinens tilstand: mikrofonen advarer undertiden f\u00f8rst, vibrationsm\u00e5lingen <a href=\"https:\/\/vibromera.eu\/da\/glossary\/accelerometer\/\">accelerometer<\/a> bekr\u00e6fter og pr\u00e6ciserer, og tilsammen giver de et mere nuanceret billede, end hver for sig kunne g\u00f8re.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/da\/glossary\/\">\u2190 Tilbage til hovedindekset<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e6r om lydtryksniveau (SPL), m\u00e5ling af akustisk st\u00f8j i decibel, der angiver maskiners st\u00f8jemission, korreleret med vibrationer for en omfattende tilstandsvurdering.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,113],"tags":[],"class_list":["post-244","glossary","type-glossary","status-publish","hentry","category-glossary","category-measurement"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary\/244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary\/244\/revisions"}],"predecessor-version":[{"id":101259,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/glossary\/244\/revisions\/101259"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/media?parent=244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/categories?post=244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/da\/wp-json\/wp\/v2\/tags?post=244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}