{"id":6294,"date":"2026-06-16T09:50:20","date_gmt":"2026-06-16T09:50:20","guid":{"rendered":"https:\/\/honeytek.com\/?p=6294"},"modified":"2026-06-21T15:34:30","modified_gmt":"2026-06-21T15:34:30","slug":"class-1-vs-class-2-sound-level-meter-guide","status":"publish","type":"post","link":"https:\/\/honeytek.com\/pt\/class-1-vs-class-2-sound-level-meter-guide\/","title":{"rendered":"Class 1 vs Class 2 Sound Level Meters: Buyer Guide"},"content":{"rendered":"<div class=\"product\"><div class=\"product\">\n<p class=\"wp-block-paragraph\">When buying a digital sound level meter, many users see terms such as <strong>Class 1<\/strong>, <strong>Class 2<\/strong>, <strong>IEC 61672<\/strong>, e <strong>ANSI Type 2<\/strong>. These specifications can be confusing, especially for buyers who simply want to measure workplace noise, HVAC equipment sound, factory machinery noise, or environmental noise levels.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Understanding the difference between Class 1 and Class 2 helps you choose the right sound level meter for your application, budget, and accuracy requirements.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Is a <a href=\"https:\/\/honeytek.com\/pt\/product\/a8850-digital-sound-level-meter\/\" data-type=\"product\" data-id=\"2805\">Digital Sound Level Meter<\/a>?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A digital sound level meter, also known as a decibel meter or noise meter, measures sound pressure level in decibels. It is commonly used in:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Workplace noise checks<\/li>\n\n\n\n<li>Factory and machinery inspection<\/li>\n\n\n\n<li>HVAC system testing<\/li>\n\n\n\n<li>School and office noise monitoring<\/li>\n\n\n\n<li>Construction site noise control<\/li>\n\n\n\n<li>Environmental noise measurement<\/li>\n\n\n\n<li>Home and neighborhood noise complaints<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For simple noise checks, a general-purpose meter may be enough. For professional reports, compliance checks, or legal documentation, the accuracy class becomes much more important.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Is a Class 1 <a href=\"https:\/\/honeytek.com\/pt\/product\/hk850-handheld-30db-to130db-lcd-digital-sound-level-meter\/\" data-type=\"product\" data-id=\"4638\">Sound Level Meter<\/a>?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>Class 1 sound level meter<\/strong> is designed for high-precision sound measurement. It usually offers tighter tolerances and better performance across a wider frequency range.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Class 1 meters are commonly used for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Acoustic laboratories<\/li>\n\n\n\n<li>Environmental noise reports<\/li>\n\n\n\n<li>Legal or regulatory noise testing<\/li>\n\n\n\n<li>Professional sound engineering<\/li>\n\n\n\n<li>Certified workplace noise studies<\/li>\n\n\n\n<li>Product noise testing<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If the measurement result may be used for official documentation, legal evidence, or certified testing, Class 1 is usually the better choice.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Is a Class 2<a href=\"https:\/\/honeytek.com\/pt\/product\/hk880f-digital-sound-level-meter-with-temperature-monitoring\/\" data-type=\"product\" data-id=\"2784\"> Sound Level Meter<\/a>?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>Class 2 sound level meter<\/strong> is designed for general-purpose noise measurement. It is still a professional tool, but it usually has wider tolerances than Class 1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Class 2 meters are commonly used for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Home noise checks<\/li>\n\n\n\n<li>Office and school noise monitoring<\/li>\n\n\n\n<li>Factory noise screening<\/li>\n\n\n\n<li>HVAC equipment inspection<\/li>\n\n\n\n<li>Construction site spot checks<\/li>\n\n\n\n<li>General workplace noise surveys<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For most daily users, Class 2 provides a good balance between accuracy, cost, and ease of use.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Class 1 vs Class 2: Which One Should You Choose?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The main difference between Class 1 and Class 2 is measurement accuracy. Class 1 meters are more precise, while Class 2 meters are more practical and cost-effective for routine inspections.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Candidatura<\/th><th>Recommended Type<\/th><\/tr><\/thead><tbody><tr><td>Home noise checks<\/td><td>Class 2<\/td><\/tr><tr><td>Office or school noise monitoring<\/td><td>Class 2<\/td><\/tr><tr><td>General factory noise screening<\/td><td>Class 2<\/td><\/tr><tr><td>HVAC inspection<\/td><td>Class 2<\/td><\/tr><tr><td>Acoustic laboratory testing<\/td><td>Class 1<\/td><\/tr><tr><td>Legal or environmental reports<\/td><td>Class 1<\/td><\/tr><tr><td>Certified compliance testing<\/td><td>Class 1<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">If you need a meter for everyday noise inspection, Class 2 is usually enough. If you need results for official reports or professional acoustic work, choose Class 1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Do IEC 61672 and ANSI Type 2 Mean?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>IEC 61672<\/strong> is an international standard for sound level meters. It defines performance requirements for Class 1 and Class 2 instruments.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In the U.S. market, buyers may also see <strong>ANSI Type 1<\/strong> e <strong>ANSI Type 2<\/strong>. In general, Type 1 is used for higher-precision measurements, while Type 2 is commonly used for general-purpose measurements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When comparing products, buyers should check:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Accuracy class<\/li>\n\n\n\n<li>Measurement range<\/li>\n\n\n\n<li>A-weighting and C-weighting<\/li>\n\n\n\n<li>Fast and Slow response<\/li>\n\n\n\n<li>Calibration function<\/li>\n\n\n\n<li>Suspens\u00e3o da recolha de dados<\/li>\n\n\n\n<li>Max\/Min measurement<\/li>\n\n\n\n<li>Data logging, if long-term monitoring is needed<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">For HVAC and Factory Inspection, Noise Is Only One Part of the Job<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In HVAC maintenance, ventilation testing, and equipment inspection, sound level measurement is often used together with air velocity and air volume measurement. A fan, air duct, exhaust system, or ventilation outlet may need both noise and airflow checks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is where Honeytek air velocity meters such as <strong>HK820<\/strong>, <strong>HK820+<\/strong>, e <strong>HK880A<\/strong> can support a more complete inspection workflow.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These models are designed for air velocity and temperature measurement, making them suitable for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HVAC air outlet testing<\/li>\n\n\n\n<li>Ventilation system inspection<\/li>\n\n\n\n<li>Fan performance checks<\/li>\n\n\n\n<li>Factory airflow monitoring<\/li>\n\n\n\n<li>Manuten\u00e7\u00e3o de equipamentos<\/li>\n\n\n\n<li>Air volume estimation<\/li>\n\n\n\n<li>Environmental comfort checks<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Honeytek <a href=\"https:\/\/honeytek.com\/pt\/product\/hk820-digital-wind-speed-anemometer\/\" data-type=\"product\" data-id=\"2664\">HK820<\/a>, <a href=\"https:\/\/honeytek.com\/pt\/product\/hk820-digital-wind-speed-anemometer\/\" data-type=\"product\" data-id=\"2664\">HK820+<\/a>, e <a href=\"https:\/\/honeytek.com\/pt\/product\/hk880a-digital-anemometer\/\" data-type=\"product\" data-id=\"2772\">HK880A<\/a>: Air Velocity Tools for Practical Inspection<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"630\" src=\"https:\/\/honeytek.com\/wp-content\/uploads\/2026\/06\/Class-1-vs-Class-2-Sound-Level-Meters.webp\" alt=\"\" class=\"wp-image-6296\" srcset=\"https:\/\/honeytek.com\/wp-content\/uploads\/2026\/06\/Class-1-vs-Class-2-Sound-Level-Meters.webp 1200w, https:\/\/honeytek.com\/wp-content\/uploads\/2026\/06\/Class-1-vs-Class-2-Sound-Level-Meters-300x158.webp 300w, https:\/\/honeytek.com\/wp-content\/uploads\/2026\/06\/Class-1-vs-Class-2-Sound-Level-Meters-1024x538.webp 1024w, https:\/\/honeytek.com\/wp-content\/uploads\/2026\/06\/Class-1-vs-Class-2-Sound-Level-Meters-768x403.webp 768w, https:\/\/honeytek.com\/wp-content\/uploads\/2026\/06\/Class-1-vs-Class-2-Sound-Level-Meters-800x420.webp 800w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">O <strong>HK820<\/strong>, <strong>HK820+<\/strong>, e <strong>HK880A<\/strong> are compact air velocity meters with a measurement range of <strong>0.40 to 30.00 m\/s<\/strong>. They support multiple wind speed units, including m\/s, km\/h, ft\/s, knots, mph, and ft\/min.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Key features include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Air velocity range: 0.40 to 30.00 m\/s<\/li>\n\n\n\n<li>Temperature range: -20\u00b0C to 60\u00b0C<\/li>\n\n\n\n<li>Sampling rate: 2 times per second<\/li>\n\n\n\n<li>Backlight display<\/li>\n\n\n\n<li>Reten\u00e7\u00e3o de dados<\/li>\n\n\n\n<li>Max\/Min\/Avg Hold<\/li>\n\n\n\n<li>Desligamento autom\u00e1tico<\/li>\n\n\n\n<li>Low-battery indication<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">O <strong>HK820+<\/strong> e <strong>HK880A<\/strong> also support air volume measurement, including CMM and CFM, which is useful for HVAC airflow calculations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O <strong>HK880A<\/strong> features an adjustable test angle and a slimmer probe-style design, making it convenient for duct outlets, vents, and narrow measurement spaces.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sound Level Meter + Air Velocity Meter: A Better Toolkit for HVAC Users<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For HVAC technicians, facility managers, and maintenance teams, a sound level meter helps identify whether equipment is too loud, while an air velocity meter helps confirm whether airflow is normal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A loud fan with weak airflow may indicate blockage or mechanical wear.<\/li>\n\n\n\n<li>A ventilation outlet with low airflow may reduce indoor comfort.<\/li>\n\n\n\n<li>A machine with rising noise and abnormal airflow may need maintenance.<\/li>\n\n\n\n<li>An HVAC system can be checked for both acoustic comfort and airflow performance.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Using both tools together gives a clearer picture than measuring noise alone.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Buying Advice<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Escolha um <strong>Class 2 sound level meter<\/strong> if you need a practical tool for everyday noise checks in homes, schools, offices, factories, HVAC systems, and construction sites.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Escolha um <strong>Class 1 sound level meter<\/strong> if you need higher precision for professional acoustic testing, legal reports, environmental noise documentation, or certified compliance work.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For HVAC and equipment inspection, consider pairing your sound level meter with an air velocity meter such as the <strong>Honeytek HK820, HK820+, or HK880A<\/strong>. This combination helps users measure both noise and airflow, making inspections more complete, practical, and reliable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>When buying a digital sound level meter, many users see terms such as Class 1, Class 2, IEC 61672, and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6296,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1,68],"tags":[],"class_list":["post-6294","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs","category-news-events"],"acf":[],"_links":{"self":[{"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/posts\/6294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/comments?post=6294"}],"version-history":[{"count":2,"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/posts\/6294\/revisions"}],"predecessor-version":[{"id":6310,"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/posts\/6294\/revisions\/6310"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/media\/6296"}],"wp:attachment":[{"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/media?parent=6294"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/categories?post=6294"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/honeytek.com\/pt\/wp-json\/wp\/v2\/tags?post=6294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}