{"id":293,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/vane-passing-frequency\/"},"modified":"2026-05-23T22:46:43","modified_gmt":"2026-05-23T22:46:43","slug":"vane-passing-frequency","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/nb\/glossary\/vane-passing-frequency\/","title":{"rendered":"Hva er pumpebladpasseringsfrekvens? Diagnostikk av pumpeblad"},"content":{"rendered":"<h1>Forst\u00e5else av lamellpasseringsfrekvens<\/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\/nb\/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\/nb\/product\/balanset-1\/\" title=\"B\u00e6rbart balanseapparat og vibrasjonsanalysator 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 komplett sett med b\u00e6rbart balanseapparat og vibrasjonsanalysator\" 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/product\/balanset-1\/\" title=\"B\u00e6rbart balanseapparat og vibrasjonsanalysator Balanset-1A\">B\u00e6rbart balanseapparat og vibrasjonsanalysator 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> + MVA (hvis aktuelt)<\/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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv: \u00abPortable balancer &amp; Vibration analyzer Balanset-1A\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abPortable balancer &amp; Vibration analyzer Balanset-1A\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/vibration-sensor\/\" title=\"Vibrasjonssensor\">\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 vibrasjonssensor i n\u00e6rbilde\" 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/vibration-sensor\/\" title=\"Vibrasjonssensor\">Vibrasjonssensor<\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv: \u00abVibration sensor\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abVibration sensor\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">\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 (lasertakometer)\" 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">Optisk sensor (lasertakometer)<\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv: \u00abOptical Sensor (Laser Tachometer)\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abOptical Sensor (Laser Tachometer)\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/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 rotorbalanseringssett: b\u00e6reveske, flerkanals signalbehandler, h\u00e5ndholdt analysator, magnetisk base, vibrasjonssensorer 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv: \u00abBalanset-4\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abBalanset-4\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/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=\"Magnetisk 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/magnet-stand\/\" title=\"Magnetisk stativ Insize-60-kgf\">Magnetisk stativ 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> + MVA (hvis aktuelt)<\/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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" 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src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A-settet inneholder grensesnittenhet, sensorer, turteller og tilbeh\u00f8r\" 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanseringsapparat &quot;Balanset-1A&quot; OEM\">Dynamisk balanseringsapparat \"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> + MVA (hvis aktuelt)<\/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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/wp-json\/wp\/v2\/glossary\/293?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=\"Legg i handlekurv: \u00abDynamic balancer \u201cBalanset-1A\u201d OEM\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abDynamic balancer \u201cBalanset-1A\u201d OEM\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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>Lamellpasseringsfrekvens<\/strong> (VPF \u2013 ogs\u00e5 kalt l\u00f8pehjulsvingefrekvens eller bare vingepass) er frekvensen med hvilken vingene p\u00e5 et roterende pumpehjul passerer et fast referansepunkt, for eksempel volutens skj\u00e6rkant (tunge), diffusorvingene eller et annet element i pumpehuset. Den beregnes som antall l\u00f8pehjulsvinger ganget med akselens rotasjonsfrekvens: <strong>VPF = N<sub>v<\/sub> \u00d7 RPM \/ 60<\/strong>. VPF er den direkte pumpeekvivalenten til <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/blade-passing-frequency\/\">bladpasseringsfrekvens<\/a> som man ser hos vifter, og det er den dominerende hydrauliske <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/vibration\/\">vibrasjon<\/a> kilde i sentrifugalpumper, som vanligvis ligger mellom 100 og 500 Hz for industrielle maskiner. Overv\u00e5king av VPF-amplituden og dens <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/harmonics\/\">harmoniske<\/a> gir viktig diagnostisk informasjon om l\u00f8pehjulets tilstand, den hydrauliske ytelsen og de interne klaringene.<\/p>\n<h2>1. Beregning og typiske verdier<\/h2>\n<h3>Formel<\/h3>\n<blockquote><p><strong>VPF = N<sub>v<\/sub> \u00d7 N \/ 60<\/strong> &nbsp; where N<sub>v<\/sub> = antall l\u00f8pehjulsskovler, N = akselhastighet i o\/min, og resultatet angis i Hz.<\/p><\/blockquote>\n<p>Fordi VPF alltid er et heltallig multiplum av <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/running-speed\/\">l\u00f8pehastighet<\/a> (1\u00d7), ligger den klart innenfor de synkrone delene av frekvensspekteret \u2014 det er en ekte bladfrekvens <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/harmonics\/\">harmonisk<\/a> av akselhastigheten, ikke en uavhengig frekvens.<\/p>\n<h3>Gjennomarbeidede eksempler<\/h3>\n<ul>\n<li><strong>Small pump:<\/strong> 5 lameller ved 3500 o\/min \u2192 VPF = 5 \u00d7 3500 \/ 60 = <strong>292 Hz<\/strong>.<\/li>\n<li><strong>Stor prosesspumpe:<\/strong> 7 lameller ved 1750 o\/min \u2192 VPF = 7 \u00d7 1750 \/ 60 = <strong>204 Hz<\/strong>.<\/li>\n<li><strong>H\u00f8ytrykkspumpe:<\/strong> 6 lameller ved 4200 o\/min \u2192 VPF = 6 \u00d7 4200 \/ 60 = <strong>420 Hz<\/strong>.<\/li>\n<\/ul>\n<h3>Vanlige antall lameller<\/h3>\n<ul>\n<li><strong>Sentrifugalpumper:<\/strong> 3\u201312 vinger, hvorav 5\u20137 er vanligst.<\/li>\n<li><strong>Small pumps:<\/strong> f\u00e6rre vinger (3\u20135).<\/li>\n<li><strong>Large pumps:<\/strong> flere lameller (7\u201312).<\/li>\n<li><strong>Pumper for h\u00f8yt trykk:<\/strong> flere vinger for \u00e5 overf\u00f8re energi effektivt.<\/li>\n<\/ul>\n<p>Det er avgj\u00f8rende \u00e5 kjenne det n\u00f8yaktige antallet skovler, fordi det er dette som skiller VPF fra en tilfeldig akselharmonisk; hvis det ikke foreligger noen tegning av l\u00f8pehjulet, kan antallet skovler ofte bekreftes ved \u00e5 telle den harmoniske ordenen der den dominerende hydrauliske toppen oppst\u00e5r. <a href=\"https:\/\/vibromera.eu\/nb\/calculators\/blade-pass-frequency\/\">Kalkulator for bladpasseringsfrekvens<\/a> h\u00e5ndterer beregningene for b\u00e5de pumper og vifter, og <a href=\"https:\/\/vibromera.eu\/nb\/calculators\/harmonic-frequency-calculator\/\">Harmonisk frekvenskalkulator<\/a> hjelper med \u00e5 plassere VPF og dens multipler p\u00e5 frekvensaksen.<\/p>\n<h2>2. Den fysiske mekanismen<\/h2>\n<h3>Trykkpulseringer<\/h3>\n<p>VPF skyldes variasjoner i hydraulisk trykk snarere enn mekanisk kraft. Sekvensen er:<\/p>\n<ol>\n<li>Hver l\u00f8pehjulsvinge f\u00f8rer v\u00e6sken utover med h\u00f8y hastighet.<\/li>\n<li>N\u00e5r en vinge passerer forbi spiralformet skj\u00e6r, skaper den en kraftig trykkpuls.<\/li>\n<li>Trykkforskjellen over vingen endrer seg raskt i det \u00f8yeblikket.<\/li>\n<li>Dette f\u00f8rer til en kraftimpuls b\u00e5de p\u00e5 l\u00f8pehjulet og huset.<\/li>\n<li>With N<sub>v<\/sub> vanes, N<sub>v<\/sub> Slike pulser oppst\u00e5r ved hver omdreining.<\/li>\n<li>Den resulterende pulsasjonsfrekvensen tilsvarer vingepassasjen \u2013 VPF.<\/li>\n<\/ol>\n<p>Dette gj\u00f8r VPF til en av de klassiske <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/hydraulic-forces\/\">hydrauliske krefter<\/a> p\u00e5virkning av en pumpe, i motsetning til rent mekaniske p\u00e5virkninger som <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/unbalance\/\">ubalanse<\/a> eller feil ved lagrene.<\/p>\n<h3>Ved optimal driftspunkt (BEP)<\/h3>\n<ul>\n<li>Innstr\u00f8mningsvinkelen samsvarer med vinge-vinkelen.<\/li>\n<li>Str\u00f8mningen er jevn, med minimal turbulens.<\/li>\n<li>VPF-amplituden er moderat og stabil.<\/li>\n<li>Trykkfordelingen rundt foringsr\u00f8ret er n\u00e6r optimal.<\/li>\n<\/ul>\n<h3>Utenfor designperspektivet<\/h3>\n<ul>\n<li>Str\u00f8mningsvinkelen stemmer ikke lenger overens med vingevinkelen.<\/li>\n<li>Turbulensen og str\u00f8mningsavskj\u00e6ringen \u00f8ker.<\/li>\n<li>Trykkpulseringene blir sterkere.<\/li>\n<li>VPF-amplituden \u00f8ker, ofte med ytterligere frekvenskomponenter.<\/li>\n<\/ul>\n<h2>3. Diagnostisk tolkning<\/h2>\n<h3>Normal VPF-amplitude<\/h3>\n<ul>\n<li>Pumpen g\u00e5r p\u00e5 eller n\u00e6r sitt optimale effektivitetspunkt (BEP).<\/li>\n<li>VPF-amplituden er stabil ved p\u00e5f\u00f8lgende m\u00e5linger.<\/li>\n<li>Vanligvis 10\u201330 % av vibrasjonsamplituden ved 1\u00d7.<\/li>\n<li>Et rent spektrum med minimalt innhold av overtoner.<\/li>\n<\/ul>\n<h3>Hva h\u00f8ye VPF-verdier forteller deg<\/h3>\n<p><strong>Drift utenfor BEP.<\/strong> Drift ved lavt gjennomstr\u00f8mningsniv\u00e5 (under ca. 70 % av BEP) \u00f8ker VPF, og det samme gjelder drift ved h\u00f8yt gjennomstr\u00f8mningsniv\u00e5 (over ca. 120 % av BEP); det optimale omr\u00e5det ligger omtrent mellom 80 og 110 % av BEP. Langvarig drift ved lavt gjennomstr\u00f8mningsniv\u00e5 er ogs\u00e5 knyttet til <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/recirculation\/\">intern resirkulering<\/a>.<\/p>\n<p><strong>Problemer med klaringen mellom l\u00f8pehjul og hus.<\/strong> Slitte slitasjeringer, eller et l\u00f8pehjul som har forskj\u00f8vet seg <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/bearing-wear\/\">slitasje p\u00e5 lager<\/a>, \u00f8ker driftsklaringen; VPF-amplituden stiger n\u00e5r klaringen \u00f8ker, noe som medf\u00f8rer ytelsestap p\u00e5 grunn av intern lekkasje.<\/p>\n<p><strong>Skade p\u00e5 l\u00f8pehjulet.<\/strong> \u00d8delagte eller sprukne lameller f\u00f8rer til asymmetri, noe som gir VPF med <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/sidebands\/\">sideb\u00e5nd<\/a> ved \u00b11\u00d7 kj\u00f8rehastighet; erosjon, avleiringer p\u00e5 vingene eller skader for\u00e5rsaket av fremmedlegemer har tilsvarende virkning. Dette er typisk for mer generelle <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/impeller-defects\/\">feil ved l\u00f8pehjulet<\/a>.<\/p>\n<p><strong>Hydraulisk resonans.<\/strong> Hvis VPF tilfeldigvis faller sammen med en akustisk <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/resonance\/\">resonans<\/a> i r\u00f8rledningen eller foringsr\u00f8ret forsterkes svingningsamplituden kraftig, noe som i noen tilfeller f\u00f8rer til kraftige strukturelle vibrasjoner og st\u00f8y som krever endringer i anlegget.<\/p>\n<h2>4. VPF-harmoniske og subharmoniske<\/h2>\n<h3>2\u00d7VPF og h\u00f8yere<\/h3>\n<p>Flere harmoniske svingninger i vingepassfrekvensen er et faresignal:<\/p>\n<ul>\n<li><strong>2\u00d7VPF present:<\/strong> tyder p\u00e5 ujevn avstand mellom vingene eller eksentrisitet i l\u00f8pehjulet.<\/li>\n<li><strong>Flere overtoner:<\/strong> kan tyde p\u00e5 alvorlig hydraulisk turbulens eller skade p\u00e5 vingene.<\/li>\n<li><strong>For store amplituder:<\/strong> \u00f8ke risikoen for <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/fatigue\/\">utmattelse<\/a> feil i vinger og hus.<\/li>\n<\/ul>\n<h3>Subharmoniske<\/h3>\n<ul>\n<li>Br\u00f8kdelkomponenter som VPF\/2 eller VPF\/3.<\/li>\n<li>Angi str\u00f8mningsustabiliteter, herunder rotasjonsstall og separasjonsceller.<\/li>\n<li>Forekommer oftest ved sv\u00e6rt lave str\u00f8mningshastigheter, og ligner p\u00e5 andre <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/subharmonic\/\">subharmonic<\/a> fenomener.<\/li>\n<\/ul>\n<h2>5. Overv\u00e5king og utvikling<\/h2>\n<h3>Etablering av en baseline<\/h3>\n<ul>\n<li>Registrer VPF n\u00e5r pumpen er ny eller nettopp overhalt.<\/li>\n<li>Dokumenter det ved designoperasjonspunktet.<\/li>\n<li>Bestem det normale forholdet mellom VPF og 1\u00d7-amplituden.<\/li>\n<li>Angi alarmgrenser, vanligvis 2\u20133 ganger grunnlinjeamplituden for VPF.<\/li>\n<\/ul>\n<h3>Trendparametere<\/h3>\n<ul>\n<li><strong>VPF-amplitude:<\/strong> overv\u00e5kes over tid; en jevn \u00f8kning tyder p\u00e5 et problem i ferd med \u00e5 oppst\u00e5.<\/li>\n<li><strong>VPF\/1\u00d7 ratio:<\/strong> b\u00f8r holde seg relativt konstant.<\/li>\n<li><strong>Harmonisk innhold:<\/strong> oppst\u00e5elsen eller veksten av 2\u00d7VPF og 3\u00d7VPF.<\/li>\n<li><strong>Utvikling av sideb\u00e5nd:<\/strong> Fremvekst av sideb\u00e5nd p\u00e5 \u00b11\u00d7 rundt VPF.<\/li>\n<\/ul>\n<h3>I samsvar med driftsforholdene<\/h3>\n<ul>\n<li>Plott VPF mot str\u00f8mningshastighet.<\/li>\n<li>Identifiser driftsomr\u00e5det med lavest VPF.<\/li>\n<li>Oppdag n\u00e5r driftspunktet har forskyvet seg.<\/li>\n<li>Koble VPF-atferden til den m\u00e5lte ytelsesnedgangen.<\/li>\n<\/ul>\n<p>This kind of <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/trend-analysis\/\">trendanalyse<\/a> avhenger av konsistente, repeterbare spektra. En b\u00e6rbar tokanalsanalysator som <a href=\"https:\/\/vibromera.eu\/nb\/produkt\/balanset-1\/\">Balanset-1A<\/a> fanger opp <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/spectrum\/\">FFT-spektrum<\/a> med VPF tydelig avgrenset i det hydrauliske omr\u00e5det mellom 100 og 500 Hz, slik at en tekniker kan bekrefte toppen ved vingepassasjen, f\u00f8lge med p\u00e5 amplituden og sideb\u00e5ndene fra bes\u00f8k til bes\u00f8k, og utelukke mekaniske <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/unbalance\/\">ubalanse<\/a> p\u00e5 eller av f\u00f8r du \u00e5pner pumpen.<\/p>\n<h2>6. Korrigerende tiltak<\/h2>\n<h3>Optimalisering av driftspunkt<\/h3>\n<ul>\n<li>Juster gjennomstr\u00f8mningen for \u00e5 bringe pumpen n\u00e6rmere BEP.<\/li>\n<li>Reduser utstr\u00f8mningen eller endre systemets motstand.<\/li>\n<li>Kontroller at sugeforholdene er tilstrekkelige.<\/li>\n<\/ul>\n<h3>Mekanisk korreksjon<\/h3>\n<ul>\n<li>Bytt ut slitte slitasjeringer for \u00e5 gjenopprette de angitte klaringene.<\/li>\n<li>Bytt ut et slitt eller skadet l\u00f8pehjul.<\/li>\n<li>L\u00f8s problemer med feil innretting som f\u00f8rer til at l\u00f8pehjulet forskyver seg.<\/li>\n<li>Kontroller at l\u00f8pehjulet er riktig plassert, b\u00e5de i aksial og radial retning.<\/li>\n<\/ul>\n<h3>Hydrauliske forbedringer<\/h3>\n<ul>\n<li>Forbedre innl\u00f8psr\u00f8rene for \u00e5 redusere forh\u00e5ndsvirvling og turbulens.<\/li>\n<li>Monter str\u00f8mningsrettere der det er hensiktsmessig.<\/li>\n<li>Kontroller at NPSH-marginen er tilstrekkelig for \u00e5 unng\u00e5 <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/cavitation\/\">kavitasjon<\/a>.<\/li>\n<li>Fjern luftinnblanding.<\/li>\n<\/ul>\n<h2>7. Forholdet til andre frekvenser<\/h2>\n<h3>VPF versus BPF<\/h3>\n<ul>\n<li>Begrepene brukes ofte om hverandre n\u00e5r det gjelder pumper og vifter.<\/li>\n<li><strong>VPF:<\/strong> det foretrukne begrepet for pumper (med lameller som forflytter v\u00e6ske).<\/li>\n<li><strong>BPF:<\/strong> det begrepet som fansen foretrekker (vinger som setter luft i bevegelse).<\/li>\n<li>Beregnings- og diagnostiseringsmetoden er identisk.<\/li>\n<\/ul>\n<h3>VPF kontra l\u00f8pehastighet<\/h3>\n<ul>\n<li>VPF = N<sub>v<\/sub> \u00d7 (l\u00f8pehastighetsfrekvens).<\/li>\n<li>VPF har alltid en h\u00f8yere frekvens enn 1\u00d7.<\/li>\n<li>For et l\u00f8pehjul med 7 skovler ligger for eksempel VPF n\u00f8yaktig p\u00e5 7 ganger driftshastigheten.<\/li>\n<\/ul>\n<p>Vingeovergangsfrekvensen er den grunnleggende hydrauliske vibrasjonskomponenten i enhver sentrifugalpumpe. N\u00e5r man mestrer beregningen av denne, kan skille mellom normale og forh\u00f8yede amplituder og sammenholde m\u00f8nstrene med b\u00e5de driftsforhold og pumpens tilstand, blir en enkelt spektraltopp et kraftig diagnostisk verkt\u00f8y \u2013 som gir grunnlag for velbegrunnede beslutninger om optimalisering av driftspunkt, gjenoppretting av klaring og utskifting av l\u00f8pehjul. Det er en hj\u00f8rnestein i en bredere <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/pump-defects\/\">feils\u00f8king av pumpe<\/a>.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/nb\/glossary\/\">\u2190 Tilbake til hovedindeksen<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e6r om skovlpasseringsfrekvens (VPF), hastigheten som pumpens impellerskovler passerer stasjon\u00e6r diffusor eller spiralformet kuttvann, noe som er viktig for \u00e5 diagnostisere hydrauliske og mekaniske problemer.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-293","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary\/293","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary\/293\/revisions"}],"predecessor-version":[{"id":101369,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary\/293\/revisions\/101369"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/media?parent=293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/categories?post=293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/tags?post=293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}