{"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\/vi\/glossary\/sound-pressure-level\/","title":{"rendered":"M\u1ee9c \u00e1p su\u1ea5t \u00e2m thanh l\u00e0 g\u00ec? \u0110o ti\u1ebfng \u1ed3n"},"content":{"rendered":"<h1>Hi\u1ec3u v\u1ec1 m\u1ee9c \u00e1p su\u1ea5t \u00e2m thanh<\/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\/vi\/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\/vi\/product\/balanset-1\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng 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=\"B\u1ed9 \u0111\u1ea7y \u0111\u1ee7 m\u00e1y c\u00e2n b\u1eb1ng v\u00e0 ph\u00e2n t\u00edch rung \u0111\u1ed9ng c\u1ea7m tay Balanset-1A\" 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\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/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\/vi\/product\/balanset-1\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng Balanset-1A\">M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng 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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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\/vi\/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\/vi\/product\/vibration-sensor\/\" title=\"C\u1ea3m bi\u1ebfn rung\">\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=\"C\u1eadn c\u1ea3nh c\u1ea3m bi\u1ebfn rung Balanset-1A\" 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\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/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\/vi\/product\/vibration-sensor\/\" title=\"C\u1ea3m bi\u1ebfn rung\">C\u1ea3m bi\u1ebfn rung<\/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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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\/vi\/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\/vi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\">\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=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\" 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\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/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\/vi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\">C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)<\/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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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\/vi\/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\/vi\/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=\"B\u1ed9 d\u1ee5ng c\u1ee5 c\u00e2n b\u1eb1ng r\u00f4to Vibromera: h\u1ed9p \u0111\u1ef1ng, b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh t\u00edn hi\u1ec7u \u0111a k\u00eanh, m\u00e1y ph\u00e2n t\u00edch c\u1ea7m tay, \u0111\u1ebf t\u1eeb, c\u1ea3m bi\u1ebfn rung v\u00e0 d\u00e2y c\u00e1p xo\u1eafn.\" 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\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/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\/vi\/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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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\/vi\/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\/vi\/product\/magnet-stand\/\" title=\"\u0110\u1ebf t\u1eeb 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=\"\u0110\u1ebf nam ch\u00e2m.\" 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\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/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\/vi\/product\/magnet-stand\/\" title=\"\u0110\u1ebf t\u1eeb Insize-60-kgf\">\u0110\u1ebf t\u1eeb Insize-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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/wp-json\/wp\/v2\/glossary\/244?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" 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\/vi\/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\/vi\/product\/reflective-tape\/\" title=\"B\u0103ng ph\u1ea3n quang\">\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=\"B\u0103ng ph\u1ea3n quang\" 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\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/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\/vi\/product\/reflective-tape\/\" title=\"B\u0103ng ph\u1ea3n quang\">B\u0103ng ph\u1ea3n quang<\/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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/wp-json\/wp\/v2\/glossary\/244?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/wp-json\/wp\/v2\/glossary\/244?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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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\/vi\/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\/vi\/product\/dynamic-balancer-balanset-1a\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d 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=\"N\u1ed9i dung b\u1ed9 s\u1ea3n ph\u1ea9m Balanset-1A bao g\u1ed3m thi\u1ebft b\u1ecb giao di\u1ec7n, c\u1ea3m bi\u1ebfn, m\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 v\u00e0 c\u00e1c ph\u1ee5 ki\u1ec7n\" 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\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/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\/vi\/product\/dynamic-balancer-balanset-1a\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d OEM\">M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d 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> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/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=\"\/vi\/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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" 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=\"\/vi\/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=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/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>M\u1ee9c \u00e1p su\u1ea5t \u00e2m thanh<\/strong> (SPL) l\u00e0 th\u01b0\u1edbc \u0111o logarit c\u1ee7a \u00e1p su\u1ea5t \u00e2m thanh so v\u1edbi m\u1ed9t tham chi\u1ebfu, \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng \u0111\u00eaxibel (dB). \u0110\u1ed1i v\u1edbi m\u00e1y m\u00f3c, n\u00f3 \u0111\u1ecbnh l\u01b0\u1ee3ng c\u01b0\u1eddng \u0111\u1ed9 ph\u00e1t th\u1ea3i ti\u1ebfng \u1ed3n \u2014 \u0111\u1ed9 to c\u1ee7a ti\u1ebfng \u1ed3n ph\u00e1t ra t\u1eeb m\u00e1y \u2014 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng micr\u00f4 ho\u1eb7c thi\u1ebft b\u1ecb \u0111o m\u1ee9c \u00e2m thanh \u1edf m\u1ed9t kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh. SPL c\u00f3 li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration\/\">rung \u0111\u1ed9ng<\/a>, b\u1edfi v\u00ec c\u00e1c b\u1ec1 m\u1eb7t rung \u0111\u1ed9ng ph\u00e1t ra \u00e2m thanh, \u0111i\u1ec1u n\u00e0y l\u00e0m cho ph\u00e9p \u0111o \u00e2m thanh tr\u1edf th\u00e0nh m\u1ed9t b\u1ed5 sung t\u1ef1 nhi\u00ean cho <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration-analysis\/\">Ph\u00e2n t\u00edch rung \u0111\u1ed9ng<\/a> \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111i\u1ec1u ki\u1ec7n m\u00e1y \u2014 \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn kh\u00ed \u0111\u1ed9ng l\u1ef1c h\u1ecdc, b\u00e1nh r\u0103ng v\u00e0 \u1ed5 tr\u1ee5c t\u1ea1o ra c\u00e1c ch\u1eef k\u00fd \u00e2m thanh ho\u1eb7c d\u1ea3i r\u1ed9ng \u0111\u1eb7c tr\u01b0ng.<\/p>\n<p>M\u1eb7c d\u00f9 SPL ch\u1ee7 y\u1ebfu l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 s\u1ee9c kh\u1ecfe ngh\u1ec1 nghi\u1ec7p v\u00e0 m\u00f4i tr\u01b0\u1eddng \u2014 b\u1ea3o v\u1ec7 th\u00ednh l\u1ef1c, quy \u0111\u1ecbnh ti\u1ebfng \u1ed3n, gi\u1edbi h\u1ea1n c\u1ed9ng \u0111\u1ed3ng \u2014 nh\u01b0ng n\u00f3 mang l\u1ea1i gi\u00e1 tr\u1ecb ch\u1ea9n \u0111o\u00e1n th\u1ef1c s\u1ef1. Nh\u1eefng thay \u0111\u1ed5i v\u1ec1 ti\u1ebfng \u1ed3n th\u01b0\u1eddng \u0111i tr\u01b0\u1edbc ho\u1eb7c k\u00e8m theo suy tho\u00e1i c\u01a1 h\u1ecdc, v\u00e0 ph\u1ed5 \u00e2m thanh c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c s\u1ef1 c\u1ed1 c\u1ee5 th\u1ec3 th\u00f4ng qua c\u00e1c m\u1eabu t\u1ea7n s\u1ed1 ph\u1ea3n \u00e1nh nh\u1eefng g\u00ec \u0111\u01b0\u1ee3c nh\u00ecn th\u1ea5y trong rung \u0111\u1ed9ng <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/spectrum\/\">ph\u1ed5<\/a>.<\/p>\n<h2>1. To\u00e1n h\u1ecdc: T\u1ea1i sao l\u1ea1i l\u00e0 \u0110\u00eaxibel?<\/h2>\n<p>SPL \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0:<\/p>\n<blockquote><p><strong>C\u01b0\u1eddng \u0111\u1ed9 \u00e2m thanh (dB) = 20 \u00d7 log\u2081\u2080(P \/ P\u2080)<\/strong>, trong \u0111\u00f3 P l\u00e0 \u00e1p su\u1ea5t \u00e2m thanh \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng pascal v\u00e0 P\u2080 = 20 \u00b5Pa, \u00e1p su\u1ea5t tham chi\u1ebfu t\u01b0\u01a1ng \u1ee9ng v\u1edbi ng\u01b0\u1ee1ng th\u00ednh l\u1ef1c c\u1ee7a con ng\u01b0\u1eddi.<\/p><\/blockquote>\n<p>Logarit t\u1ed3n t\u1ea1i v\u00ec l\u00fd do th\u1ef1c t\u1ebf: tai ng\u01b0\u1eddi c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd m\u1ed9t d\u00e3y \u00e1p su\u1ea5t kh\u1ed5ng l\u1ed3 \u2014 t\u1eeb \u00e2m thanh nh\u1ecf nh\u1ea5t c\u00f3 th\u1ec3 nghe \u0111\u01b0\u1ee3c \u0111\u1ebfn ng\u01b0\u1ee1ng \u0111au tai bao g\u1ed3m m\u1ed9t h\u1ec7 s\u1ed1 kho\u1ea3ng m\u1ed9t tri\u1ec7u l\u1ea7n v\u1ec1 \u00e1p su\u1ea5t. M\u1ed9t thang \u0111o logarit n\u00e9n d\u00e3y \u0111\u00f3 th\u00e0nh m\u1ed9t kho\u1ea3ng c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd 0\u2013120+ dB. N\u00f3 c\u0169ng gi\u1ea3i th\u00edch ph\u00e9p t\u00ednh l\u00e0m ng\u1ea1c nhi\u00ean nh\u1eefng ng\u01b0\u1eddi m\u1edbi: v\u00ec thang \u0111o l\u00e0 logarit, l\u00e0m g\u1ea5p \u0111\u00f4i \u00e2m thanh <em>c\u00f4ng su\u1ea5t<\/em> ch\u1ec9 t\u0103ng 3 dB, v\u00e0 hai m\u00e1y m\u00f3c c\u00f3 c\u00f9ng \u0111\u1ed9 l\u1edbn \u00e2m thanh l\u1ea1i v\u1edbi nhau l\u1edbn h\u01a1n 3 dB so v\u1edbi m\u1ed9t m\u00e1y \u2014 kh\u00f4ng ph\u1ea3i l\u1edbn g\u1ea5p \u0111\u00f4i. K\u1ebft h\u1ee3p c\u00e1c ngu\u1ed3n do \u0111\u00f3 l\u00e0 m\u1ed9t t\u1ed5ng logarit, d\u1ec5 d\u00e0ng x\u1eed l\u00fd v\u1edbi <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/noise-level-addition\/\">M\u00e1y t\u00ednh c\u1ed9ng m\u1ee9c \u0111\u1ed9 ti\u1ebfng \u1ed3n<\/a> ho\u1eb7c chuy\u1ec3n \u0111\u1ed5i gi\u1eefa \u00e1p su\u1ea5t v\u00e0 decibel v\u1edbi <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/sound-level-converter\/\">B\u1ed9 chuy\u1ec3n \u0111\u1ed5i m\u1ee9c \u00e2m thanh<\/a>.<\/p>\n<p>Nh\u01b0 m\u1ed9t h\u01b0\u1edbng d\u1eabn tr\u01b0\u1eddng th\u00f4 s\u01a1 cho thang \u0111o: 0 dB l\u00e0 ng\u01b0\u1ee1ng nghe; 30\u201340 dB l\u00e0 m\u1ed9t ph\u00f2ng y\u00ean t\u0129nh; 60\u201370 dB l\u00e0 tr\u00f2 chuy\u1ec7n b\u00ecnh th\u01b0\u1eddng; 80\u201390 dB l\u00e0 m\u00e1y m\u00f3c \u1ed3n \u00e0o n\u01a1i khuy\u1ebfn c\u00e1o b\u1ea3o v\u1ec7 th\u00ednh gi\u00e1c; 100\u2013110 dB l\u00e0 m\u00e1y m\u00f3c r\u1ea5t \u1ed3n \u00e0o n\u01a1i n\u00f3 l\u00e0 b\u1eaft bu\u1ed9c; v\u00e0 120 dB v\u00e0 tr\u00ean \u0111\u00f3 l\u00e0 ng\u01b0\u1ee1ng \u0111au, v\u1edbi nguy c\u01a1 t\u1ed5n h\u1ea1i th\u00ednh gi\u00e1c ngay l\u1eadp t\u1ee9c.<\/p>\n<h2>2. C\u00e1ch \u0110o SPL<\/h2>\n<h3>M\u00e1y \u0111o m\u1ee9c \u00e2m thanh<\/h3>\n<ul>\n<li>M\u1ed9t microphone ch\u00ednh x\u00e1c c\u1ea5p ngu\u1ed3n cho m\u1ed9t thi\u1ebft b\u1ecb \u0111o \u00e1p d\u1ee5ng c\u00e2n ch\u1ec9nh t\u1ea7n s\u1ed1 v\u00e0 c\u00e2n ch\u1ec9nh th\u1eddi gian v\u00e0 hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3 theo dB SPL.<\/li>\n<li>C\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c x\u1ebfp lo\u1ea1i Class 1 (ch\u00ednh x\u00e1c) ho\u1eb7c Class 2 (m\u1ee5c \u0111\u00edch chung) d\u01b0\u1edbi <strong>IEC 61672<\/strong>.<\/li>\n<\/ul>\n<h3>Kho\u1ea3ng c\u00e1ch \u0111o l\u01b0\u1eddng<\/h3>\n<ul>\n<li><strong>Tr\u01b0\u1eddng g\u1ea7n:<\/strong> d\u01b0\u1edbi 1 m t\u1eeb ngu\u1ed3n, h\u1eefu \u00edch cho vi\u1ec7c x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c m\u1ed9t th\u00e0nh ph\u1ea7n \u1ed3n \u00e0o.<\/li>\n<li><strong>Tr\u01b0\u1eddng xa:<\/strong> v\u01b0\u1ee3t qu\u00e1 1 m, n\u01a1i c\u00e1c \u0111i\u1ec1u ki\u1ec7n tr\u01b0\u1eddng t\u1ef1 do t\u1ed3n t\u1ea1i; 1 m l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n ph\u1ed5 bi\u1ebfn cho m\u00e1y m\u00f3c.<\/li>\n<li>Trong m\u1ed9t tr\u01b0\u1eddng t\u1ef1 do, SPL gi\u1ea3m kho\u1ea3ng <strong>6 dB cho m\u1ed7i l\u1ea7n t\u0103ng g\u1ea5p \u0111\u00f4i kho\u1ea3ng c\u00e1ch<\/strong> \u2014 c\u01a1 s\u1edf c\u1ee7a <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/noise-distance-attenuation\/\">M\u00e1y t\u00ednh suy gi\u1ea3m kho\u1ea3ng c\u00e1ch ti\u1ebfng \u1ed3n<\/a>.<\/li>\n<\/ul>\n<h3>C\u00e2n weighted t\u1ea7n s\u1ed1<\/h3>\n<ul>\n<li><strong>C\u00e2n ch\u1ec9nh A (dBA):<\/strong> \u0111\u1ecbnh h\u00ecnh ph\u1ea3n \u1ee9ng \u0111\u1ec3 b\u1eaft ch\u01b0\u1edbc \u0111\u1ed9 nh\u1ea1y c\u1ee7a tai; cho \u0111\u1ebfn nay l\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5t cho \u0111\u00e1nh gi\u00e1 ti\u1ebfng \u1ed3n.<\/li>\n<li><strong>C\u00e2n ch\u1ec9nh C (dBC):<\/strong> t\u01b0\u01a1ng \u0111\u1ed1i ph\u1eb3ng, duy tr\u00ec n\u1ed9i dung t\u1ea7n s\u1ed1 th\u1ea5p cho ti\u1ebfng \u1ed3n \u0111\u1ec9nh v\u00e0 xung.<\/li>\n<li><strong>Z \/ tuy\u1ebfn t\u00ednh (dBZ):<\/strong> kh\u00f4ng c\u00e2n ch\u1ec9nh; m\u1ed7i t\u1ea7n s\u1ed1 \u0111\u1ec1u quan tr\u1ecdng nh\u01b0 nhau, \u01b0u ti\u00ean cho ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt.<\/li>\n<\/ul>\n<h2>3. M\u1ed1i Quan H\u1ec7 v\u1edbi Rung \u0110\u1ed9ng<\/h2>\n<h3>B\u1ee9c x\u1ea1 \u00e2m thanh t\u1eeb m\u1ed9t b\u1ec1 m\u1eb7t rung \u0111\u1ed9ng<\/h3>\n<ul>\n<li>B\u1ec1 m\u1eb7t rung \u0111\u1ed9ng t\u00e1c \u0111\u1ed9ng l\u00ean kh\u00f4ng kh\u00ed xung quanh v\u00e0 ph\u00e1t x\u1ea1 s\u00f3ng \u00e2m.<\/li>\n<li>C\u00f4ng su\u1ea5t \u00e2m ph\u00e1t x\u1ea1 t\u0103ng l\u00ean g\u1ea7n nh\u01b0 <strong>v\u1eadn t\u1ed1c\u00b2 \u00d7 di\u1ec7n t\u00edch<\/strong>, do \u0111\u00f3 b\u1ec1 m\u1eb7t cao h\u01a1n <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/velocity\/\">v\u1eadn t\u1ed1c<\/a> n\u00f3i chung c\u00f3 ngh\u0129a l\u00e0 SPL cao h\u01a1n.<\/li>\n<li>M\u1ed1i li\u00ean h\u1ec7 kh\u00f4ng ch\u00ednh x\u00e1c tuy nhi\u00ean \u2014 hi\u1ec7u su\u1ea5t ph\u00e1t x\u1ea1 thay \u0111\u1ed5i m\u1ea1nh theo t\u1ea7n s\u1ed1 v\u00e0 h\u00ecnh h\u1ecdc t\u1ea5m, do \u0111\u00f3 hai b\u1ec1 m\u1eb7t rung \u0111\u1ed9ng nh\u01b0 nhau c\u00f3 th\u1ec3 ph\u00e1t x\u1ea1 kh\u00e1c nhau r\u1ea5t nhi\u1ec1u.<\/li>\n<\/ul>\n<h3>T\u01b0\u01a1ng quan Ch\u1ea9n \u0111o\u00e1n<\/h3>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1 v\u1ec1 v\u00f2ng bi:<\/strong> ti\u1ebfng x\u00e8o x\u00e8o ho\u1eb7c nghi\u1ebfn cao t\u1ea7n s\u1ed1.<\/li>\n<li><strong>V\u1ea5n \u0111\u1ec1 b\u00e1nh r\u0103ng:<\/strong> m\u1ed9t ti\u1ebfng k\u00eau \u0111\u1eb7c tr\u01b0ng \u1edf t\u1ea7n s\u1ed1 l\u01b0\u1edbi.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/unbalance\/\">M\u1ea5t c\u00e2n b\u1eb1ng<\/a>:<\/strong> m\u1ed9t ti\u1ebfng g\u1ea7m t\u1ea7n s\u1ed1 th\u1ea5p \u1edf 1\u00d7 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/running-speed\/\">t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh<\/a>.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/cavitation\/\">Hi\u1ec7n t\u01b0\u1ee3ng s\u1ee7i b\u1ecdt<\/a>:<\/strong> ti\u1ebfng n\u1ed5 t\u01b0ng t\u01b0ng ng\u1eabu nhi\u00ean khi c\u00e1c bong b\u00f3ng h\u01a1i n\u01b0\u1edbc s\u1ee5p \u0111\u1ed5.<\/li>\n<\/ul>\n<h2>4. Ph\u00e2n t\u00edch Ph\u1ed5 \u00c2m thanh<\/h2>\n<p>C\u0169ng nh\u01b0 v\u1edbi rung \u0111\u1ed9ng, chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u00e2m thanh th\u00e0nh ph\u1ed5 t\u1ea7n s\u1ed1 t\u00e1ch m\u1ed9t ti\u1ebfng \u1ed3n ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c ph\u1ea7n c\u00f3 th\u1ec3 ch\u1ea9n \u0111o\u00e1n \u0111\u01b0\u1ee3c.<\/p>\n<h3>Th\u00e0nh ph\u1ea7n Tonal<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/gear-mesh-frequency\/\">\u0103n kh\u1edbp b\u00e1nh r\u0103ng<\/a>:<\/strong> m\u1ed9t t\u00f4ng s\u1ea1ch \u1edf t\u1ea7n s\u1ed1 c\u1eafp r\u0103ng, th\u01b0\u1eddng v\u1edbi <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/sidebands\/\">d\u1ea3i b\u00ean<\/a>.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/blade-passing-frequency\/\">T\u1ea7n s\u1ed1 c\u00e1nh qu\u1ea1t<\/a>:<\/strong> m\u1ed9t t\u1ea7n s\u1ed1 t\u1ea1i t\u1ea7n s\u1ed1 l\u01b0u l\u01b0\u1ee1ng c\u00e1nh qu\u1ea1t ho\u1eb7c m\u00e1y n\u00e9n.<\/li>\n<li><strong>\u0110i\u1ec7n:<\/strong> m\u1ed9t ti\u1ebfng h\u00e1t 120\/100 Hz t\u1eeb c\u00e1c motor \u1edf hai l\u1ea7n t\u1ea7n s\u1ed1 \u0111\u01b0\u1eddng d\u00e2y.<\/li>\n<li><strong>T\u1ea7n s\u1ed1 v\u00f2ng bi:<\/strong> m\u1ed9t h\u1ecd <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/bearing-fault-frequencies\/\">t\u1ea7n s\u1ed1 khi\u1ebfm khuy\u1ebft \u1ed5 tr\u1ee5c<\/a> s\u00f3ng h\u00e0i.<\/li>\n<\/ul>\n<h3>Ti\u1ebfng \u1ed3n ph\u1ed5 r\u1ed9ng<\/h3>\n<ul>\n<li><strong>Kh\u00ed \u0111\u1ed9ng h\u1ecdc:<\/strong> ti\u1ebfng \u1ed3n t\u1eeb nhi\u1ec5u lo\u1ea1n v\u00e0 d\u00f2ng ch\u1ea3y.<\/li>\n<li><strong>Hi\u1ec7n t\u01b0\u1ee3ng s\u1ee7i b\u1ecdt:<\/strong> s\u1ef1 s\u1ee5p \u0111\u1ed5 b\u1ecdt ng\u1eabu nhi\u00ean tr\u00ean m\u1ed9t d\u1ea3i r\u1ed9ng.<\/li>\n<li><strong>H\u01b0 h\u1ecfng v\u00f2ng bi:<\/strong> s\u1ef1 gia t\u0103ng ph\u1ed5 r\u1ed9ng khi c\u00e1c b\u1ec1 m\u1eb7t b\u1ecb suy tho\u00e1i.<\/li>\n<li><strong>Ma s\u00e1t:<\/strong> ph\u00e1t th\u1ea3i ng\u1eabu nhi\u00ean li\u00ean t\u1ee5c.<\/li>\n<\/ul>\n<h2>5. \u1ee8ng d\u1ee5ng<\/h2>\n<p>Ph\u00e9p \u0111o SPL c\u00f3 v\u1ecb tr\u00ed c\u1ee7a n\u00f3 trong b\u1ed1n l\u0129nh v\u1ef1c th\u1ef1c t\u1ebf:<\/p>\n<ul>\n<li><strong>Theo d\u00f5i t\u00ecnh tr\u1ea1ng:<\/strong> b\u1ed5 sung d\u1eef li\u1ec7u rung \u0111\u1ed9ng, th\u01b0\u1eddng cung c\u1ea5p d\u1ea5u hi\u1ec7u s\u1edbm nh\u1ea5t v\u1ec1 sai h\u1ecfng v\u00f2ng bi \u2014 ti\u1ebfng \u1ed3n c\u00f3 th\u1ec3 t\u0103ng tr\u01b0\u1edbc khi rung \u0111\u1ed9ng v\u1ecf \u2014 v\u00e0 theo d\u00f5i m\u1eb7c d\u1edf ghi b\u1eb1ng nh\u1eefng thay \u0111\u1ed5i trong ch\u1ea5t l\u01b0\u1ee3ng ti\u1ebfng \u1ed3n.<\/li>\n<li><strong>Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng:<\/strong> ki\u1ec3m tra ch\u1ea5p nh\u1eadn thi\u1ebft b\u1ecb m\u1edbi theo gi\u1edbi h\u1ea1n ti\u1ebfng \u1ed3n, x\u00e1c minh sau s\u1eeda ch\u1eefa, v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m trong s\u1ea3n xu\u1ea5t.<\/li>\n<li><strong>Tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh:<\/strong> gi\u1edbi h\u1ea1n ti\u1ebfp x\u00fac ngh\u1ec1 nghi\u1ec7p (OSHA, ch\u1ec9 th\u1ecb EU), gi\u1edbi h\u1ea1n ti\u1ebfng \u1ed3n c\u1ed9ng \u0111\u1ed3ng v\u00e0 c\u00e1c \u0111\u1eb7c t\u1ea3 thi\u1ebft b\u1ecb, \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 li\u1ec1u l\u01b0\u1ee3ng ti\u1ebfp x\u00fac nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/noise-exposure-calculator\/\">M\u00e1y t\u00ednh m\u1ee9c \u0111\u1ed9 ti\u1ebfp x\u00fac ti\u1ebfng \u1ed3n<\/a>.<\/li>\n<li><strong>Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1:<\/strong> x\u00e1c \u0111\u1ecbnh c\u00e1c ngu\u1ed3n ti\u1ebfng \u1ed3n, x\u1ebfp h\u1ea1ng nh\u1eefng ng\u01b0\u1eddi \u0111\u00f3ng g\u00f3p cho ti\u1ebfng \u1ed3n chung c\u1ee7a c\u01a1 s\u1edf, v\u00e0 x\u00e1c nh\u1eadn hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c bi\u1ec7n ph\u00e1p gi\u1ea3m ti\u1ebfng \u1ed3n.<\/li>\n<\/ul>\n<p>Theo quy t\u1eafc chung cho nh\u1eefng g\u00ec d\u1ef1 ki\u1ebfn, c\u00e1c m\u1ee9c tr\u1ecdng s\u1ed1 A \u0111i\u1ec3n h\u00ecnh \u1edf 1 m ch\u1ea1y kho\u1ea3ng 70\u201385 dBA cho c\u00e1c \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n, 75\u201390 dBA cho m\u00e1y b\u01a1m ly t\u00e2m, 80\u2013100 dBA cho qu\u1ea1t v\u00e0 m\u00e1y th\u1ed5i, 75\u201395 dBA cho h\u1ed9p s\u1ed1, 85\u2013105 dBA cho m\u00e1y n\u00e9n, v\u00e0 95\u2013110 dBA cho \u0111\u1ed9ng c\u01a1 diesel.<\/p>\n<h2>6. Ti\u1ebfng \u1ed3n nh\u01b0 m\u1ed9t ch\u1ec9 b\u00e1o ch\u1ea9n \u0111o\u00e1n<\/h2>\n<p>Hai lo\u1ea1i thay \u0111\u1ed5i quan tr\u1ecdng khi l\u1eafng nghe m\u00e1y theo th\u1eddi gian. M\u1ed9t <strong>m\u1ee9c t\u0103ng d\u1ea7n<\/strong> ch\u1ec9 v\u00e0o tho\u00e1i h\u00f3a v\u00f2ng bi (m\u00e0i hay k\u00eau r\u00edt), m\u1eb7c d\u1edf ghi (m\u1ed9t ti\u1ebfng k\u00eau t\u0103ng c\u01b0\u1eddng), c\u00e1c v\u1ea5n \u0111\u1ec1 b\u00f4i tr\u01a1n (ti\u1ebfng \u1ed3n ma s\u00e1t t\u0103ng), hay <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/looseness\/\">s\u1ef1 l\u1ecfng l\u1ebbo<\/a> (rung \u0111\u1ed9ng). M\u1ed9t <strong>thay \u0111\u1ed5i trong \u0111\u1eb7c \u0111i\u1ec3m<\/strong> \u2014 nh\u1eefng t\u00f4ng m\u1edbi xu\u1ea5t hi\u1ec7n, t\u1ea7n s\u1ed1 d\u1ecbch chuy\u1ec3n, nh\u1eefng ti\u1ebfng \u1ed3n gi\u00e1n \u0111o\u1ea1n ho\u1eb7c \u0111i\u1ec1u ch\u1ebf \u2014 c\u0169ng quan tr\u1ecdng nh\u01b0 nhau, b\u00e1o hi\u1ec7u m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u00e1t tri\u1ec3n ngay c\u1ea3 khi \u0111\u1ecdc dBA t\u1ed5ng th\u1ec3 h\u1ea7u nh\u01b0 ch\u01b0a thay \u0111\u1ed5i.<\/p>\n<p>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u00e2m thanh c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf: m\u1ed9t m\u00e1y \u0111o SPL nghe th\u1ea5y <em>m\u1ecdi th\u1ee9<\/em> trong khu v\u1ef1c, do \u0111\u00f3 m\u00e1y h\u00e0ng x\u00f3m \u1ed3n \u00e0o, ph\u1ea3n x\u1ea1 t\u1eeb t\u01b0\u1eddng v\u00e0 ti\u1ebfng \u1ed3n n\u1ec1n t\u1eeb thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t \u0111\u1ec1u l\u00e0m \u00f4 nhi\u1ec5m ph\u00e9p \u0111o theo c\u00e1ch m\u00e0 c\u1ea3m bi\u1ebfn ti\u1ebfp x\u00fac tr\u00e1nh \u0111\u01b0\u1ee3c. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao, \u0111\u1ec3 x\u00e1c nh\u1eadn m\u1ed9t l\u1ed7i c\u01a1 h\u1ecdc v\u00e0 \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 s\u1eeda ch\u1eefa n\u00f3, c\u00e1c k\u1ef9 s\u01b0 chuy\u1ec3n \u0111\u1ebfn ph\u00e9p \u0111o rung \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp. Khi kh\u1ea3o s\u00e1t ti\u1ebfng \u1ed3n g\u1ee3i \u00fd m\u1ea5t c\u00e2n b\u1eb1ng, m\u1ed9t b\u1ed9 ph\u00e2n t\u00edch hai k\u00eanh di \u0111\u1ed9ng nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a> c\u00f3 th\u1ec3 x\u00e1c nh\u1eadn n\u00f3 b\u1eb1ng c\u00e1ch \u0111o bi\u00ean \u0111\u1ed9 1\u00d7 v\u00e0 pha t\u1ea1i v\u00f2ng bi, sau \u0111\u00f3 c\u00e2n b\u1eb1ng rotor t\u1ea1i ch\u1ed7 \u2014 c\u00e1ch ly ngu\u1ed3n c\u01a1 h\u1ecdc th\u1ef1c s\u1ef1 m\u00e0 microphone ch\u1ec9 c\u00f3 th\u1ec3 g\u1ee3i \u00fd.<\/p>\n<h2>7. Chu\u1ea9n \u0111o l\u01b0\u1eddng<\/h2>\n<ul>\n<li><strong>Ti\u00eau chu\u1ea9n IEC 61672:<\/strong> quy chu\u1ea9n cho m\u00e1y \u0111o m\u1ee9c \u00e2m thanh.<\/li>\n<li><strong>Ti\u00eau chu\u1ea9n ISO 3744:<\/strong> x\u00e1c \u0111\u1ecbnh c\u00f4ng su\u1ea5t \u00e2m thanh t\u1eeb \u00e1p su\u1ea5t \u00e2m thanh.<\/li>\n<li><strong>Ti\u00eau chu\u1ea9n ISO 1680:<\/strong> m\u00e3 th\u1eed nghi\u1ec7m ti\u1ebfng \u1ed3n cho c\u00e1c m\u00e1y \u0111i\u1ec7n quay.<\/li>\n<li><strong>Ti\u00eau chu\u1ea9n ANSI S12.19:<\/strong> \u0111o l\u01b0\u1eddng ti\u1ebfng \u1ed3n c\u1ee7a m\u00e1y m\u00f3c.<\/li>\n<\/ul>\n<p>S\u1eed d\u1ee5ng c\u00f9ng v\u1edbi rung \u0111\u1ed9ng, SPL l\u00e0m tr\u00f2n b\u1ee9c tranh ho\u00e0n ch\u1ec9nh v\u1ec1 s\u1ee9c kh\u1ecfe m\u00e1y: microphone \u0111\u00f4i khi c\u1ea3nh b\u00e1o tr\u01b0\u1edbc, <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/accelerometer\/\">c\u1ea3m bi\u1ebfn gia t\u1ed1c<\/a> x\u00e1c nh\u1eadn v\u00e0 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed, v\u00e0 c\u00f9ng nhau ch\u00fang cung c\u1ea5p \u0111\u00e1nh gi\u00e1 \u0111\u1ea7y \u0111\u1ee7 h\u01a1n so v\u1edbi m\u1ed9t m\u00ecnh.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">\u2190 Quay l\u1ea1i M\u1ee5c l\u1ee5c ch\u00ednh<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u v\u1ec1 m\u1ee9c \u00e1p su\u1ea5t \u00e2m thanh (SPL), ph\u00e9p \u0111o ti\u1ebfng \u1ed3n \u00e2m thanh t\u00ednh b\u1eb1ng decibel cho bi\u1ebft ti\u1ebfng \u1ed3n ph\u00e1t ra t\u1eeb m\u00e1y m\u00f3c, t\u01b0\u01a1ng quan v\u1edbi \u0111\u1ed9 rung \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 t\u00ecnh tr\u1ea1ng to\u00e0n di\u1ec7n.<\/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\/vi\/wp-json\/wp\/v2\/glossary\/244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/244\/revisions"}],"predecessor-version":[{"id":101259,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/244\/revisions\/101259"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/media?parent=244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/categories?post=244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/tags?post=244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}