{"id":4656,"date":"2025-10-25T18:47:00","date_gmt":"2025-10-25T18:47:00","guid":{"rendered":"https:\/\/honeytek.com\/?p=4656"},"modified":"2025-10-23T14:43:05","modified_gmt":"2025-10-23T14:43:05","slug":"how-to-select-the-right-sound-level-meter-class-for-laboratory-use","status":"publish","type":"post","link":"https:\/\/honeytek.com\/ru\/how-to-select-the-right-sound-level-meter-class-for-laboratory-use\/","title":{"rendered":"How to Select the Right Sound Level Meter Class for Laboratory Use"},"content":{"rendered":"<div class=\"product\"><div class=\"product\">\n<p class=\"wp-block-paragraph\">In a laboratory environment, selecting a sound level meter is not simply about picking the \u201ccheapest\u201d or \u201cmost popular\u201d model. You must align the meter\u2019s <strong>accuracy class<\/strong>, measurement capabilities, data-logging functions and calibration traceability with your specific application, regulatory requirements and long-term usage scenario. Below we provide a practical selection framework and recommendations tailored to common laboratory scenarios.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/HK850-Sound-Level-Meter-1.webp\" alt=\"\" class=\"wp-image-4640\" style=\"width:648px;height:auto\" srcset=\"https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/HK850-Sound-Level-Meter-1.webp 800w, https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/HK850-Sound-Level-Meter-1-300x300.webp 300w, https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/HK850-Sound-Level-Meter-1-150x150.webp 150w, https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/HK850-Sound-Level-Meter-1-768x768.webp 768w, https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/HK850-Sound-Level-Meter-1-600x600.webp 600w, https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/HK850-Sound-Level-Meter-1-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Core Concepts You Should Know<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Accuracy Classes \u2013 Class 1 vs Class 2<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">International standard IEC 61672-1 (Electroacoustics \u2013 Sound Level Meters \u2013 Part 1: Specifications) defines two performance categories (Class 1 and Class 2) for sound level meters.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cClass 1\u201d meters have tighter tolerances, broader frequency range, and better stability than \u201cClass 2\u201d.<\/li>\n\n\n\n<li>\u201cClass 2\u201d meters are still compliant, but for more general use and not necessarily precision laboratory measurement.<\/li>\n\n\n\n<li>Older standards (e.g., IEC 60651) used \u201cType 1\/Type 2\u201d terminology; under IEC 61672 these become \u201cClass 1\/Class 2\u201d.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Hence, when you see a meter labelled \u201cClass 1 (IEC 61672-1)\u201d or \u201cClass 2\u201d, that gives you a key indication of its measurement fidelity.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Frequency Weighting &amp; Time Weighting<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Frequency weighting:<\/strong> SLMs typically offer A-, C- and Z-weighting. A-weighting (dB(A)) is commonly used for human-noise response and environmental\/occupational noise assessments.<\/li>\n\n\n\n<li><strong>Time weighting:<\/strong> \u201cFast\u201d, \u201cSlow\u201d (and sometimes \u201cImpulse\u201d) modes define how the meter smooths fluctuations in the sound pressure level.<br>For laboratory settings, you may also require built-in functions for equivalent continuous sound level (Leq), peak levels, octave-band or 1\/3-octave-band filters if you are analysing frequency content.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Data-Logging, Analysis &amp; Traceability<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In a laboratory, besides simply reading an instantaneous decibel value, you often need:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Time-stamped records for reporting<\/li>\n\n\n\n<li>Statistical functions (L10, L50, L90, percentile levels)<\/li>\n\n\n\n<li>Data export (USB, Ethernet, WiFi) for post-analysis<\/li>\n\n\n\n<li>Calibration traceability (i.e., calibrator certificate, model\u2019s pattern approval)<br>These features elevate the device from a \u201csurvey instrument\u201d to a laboratory-grade measurement tool.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Common Laboratory &amp; Monitoring Scenarios and Class Recommendations<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"776\" height=\"832\" src=\"https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/Digital-sound-level-meter.png\" alt=\"\" class=\"wp-image-4661\" style=\"width:632px;height:auto\" srcset=\"https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/Digital-sound-level-meter.png 776w, https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/Digital-sound-level-meter-280x300.png 280w, https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/Digital-sound-level-meter-768x823.png 768w\" sizes=\"(max-width: 776px) 100vw, 776px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Precision acoustics research or materials testing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If your lab is doing high-end acoustics research, validating material sound absorption\/insulation or supporting regulatory compliance \u2192 choose a <strong>Class 1<\/strong> sound level meter.<br><strong>Why:<\/strong> The broader frequency response, lower maximum uncertainty and higher stability are key when measurement errors must be minimised.<br><strong>Features to look for:<\/strong> wide dynamic range (e.g., 10 Hz\u201320 kHz or beyond), octave\/1\/3-octave filters, integrated logging, calibrator traceable to national standards.<br><strong>Long-term tip:<\/strong> Build a calibration schedule, keep environmental conditions stable (temperature\/humidity), and perform repeated verification.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Teaching lab, basic environment noise monitoring<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For classroom demos, introductory acoustic labs or routine monitoring where ultra-precision is less critical \u2192 a <strong>Class 2<\/strong> sound level meter may suffice.<br><strong>Why:<\/strong> Cost-effective and simpler to operate, still compliant with IEC 61672 for many applications.<br><strong>But:<\/strong> If you later intend to publish or certify results, you may need Class 1 anyway.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Engineering\/industrial site visits from lab<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If your lab instrument will also be used for field visits (site noise, operator exposure) \u2192 you might choose a <strong>Class 1<\/strong> meter (so that you cover the highest requirement) or a robust Class 2 with known limitations.<br><strong>Tip:<\/strong> Check whether your national or local regulation mandates Class 1 for certain noise levels (e.g., when measuring below 35 dB(A) in some jurisdictions).<br>In fact, in China environment noise standards indicate that when A-weighted sound levels drop below ~35 dB, a 1-level instrument may be required.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Long-term environmental monitoring \/ data-logging<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When the objective is tracking trends over weeks\/months rather than point measurements, you still need good stability, data-logging and remote interface.<br><strong>Choice:<\/strong> Class 2 may work if the measurement accuracy tolerance is acceptable, but given the long term drift and data value you may prefer a Class 1 for confidence.<br><strong>Key features:<\/strong> remote access, automated scheduling, built-in self-test, anti-drift calibration reminder, long battery or mains option.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Selection Checklist for <a href=\"https:\/\/honeytek.com\/ru\/product\/hk880f-digital-sound-level-meter-with-temperature-monitoring\/\" data-type=\"product\" data-id=\"2784\">Sound Level Meters<\/a><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Standards &amp; Compliance<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ensure the instrument specifies compliance to IEC 61672 (or your national equivalent like EN 61672, ANSI\/ASA S1.4) for either Class 1 or Class 2.<\/li>\n\n\n\n<li>If you will publish or submit results to regulatory bodies, check they accept the meter\u2019s class for your measurement scenario.<\/li>\n\n\n\n<li>Ensure the meter\u2019s manufacturer provides a pattern approval certificate or equivalent.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Accuracy &amp; Uncertainty<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Confirm the meter\u2019s performance band: frequency response, dynamic range (dB span), temperature\/humidity operating conditions.<\/li>\n\n\n\n<li>Ask for manufacturer\u2019s specification for measurement uncertainty (\u00b1x dB) and repeated-measurement reproducibility.<\/li>\n\n\n\n<li>Plan for calibration: does the supplier provide calibration options traceable to National Metrology Institute?<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Frequency &amp; Time Weighting, Band Analysis<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ensure the meter supports A-weighting (dB(A)), and if required, C-weighting and Z-weighting.<\/li>\n\n\n\n<li>If required for your lab, ensure you have octave\/1\/3-octave band filters (for low-frequency noise, HVAC, emission labs).<\/li>\n\n\n\n<li>Check time weighting options (Fast, Slow, Peak, Impulse) and ability to compute Leq, L10, L90, SEL etc.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Data &amp; Interface<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Data logging: memory capacity, sampling interval, timestamp, format (CSV, binary), interface (USB, RS-232, Ethernet, WiFi).<\/li>\n\n\n\n<li>Software support: compatible for data import\/export, statistical analysis, report generation.<\/li>\n\n\n\n<li>Remote operation: if you\u2019ll mount the meter in a remote lab space, check for remote control or data streaming capability.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Calibration &amp; Maintenance<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Choose a meter with accessible calibration routine; calibrator should itself be traceable.<\/li>\n\n\n\n<li>Plan for periodic calibration or verification (intervals recommended e.g., annual or bi-annual).<\/li>\n\n\n\n<li>Ensure documentation of calibration certificates, versioning, model number and serial number for audit trail.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Practical and Durability Considerations<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ensure measurement range suits your lab environment (e.g., if very quiet &lt; 30 dB or noisy &gt; 130 dB).<\/li>\n\n\n\n<li>Consider microphone type, mounting (tripod vs handheld), self-noise of the instrument (important for low-level labs).<\/li>\n\n\n\n<li>Consider durability: Is the meter portable or bench-mounted? Are there environmental protections (dust, humidity, shock)?<\/li>\n\n\n\n<li>Consider cost vs lifetime: Higher class (Class 1) instruments cost more but deliver better stability and value for critical measurement tasks.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"448\" src=\"https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/Sound-Level-Meter.jpg\" alt=\"\" class=\"wp-image-4662\" srcset=\"https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/Sound-Level-Meter.jpg 800w, https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/Sound-Level-Meter-300x168.jpg 300w, https:\/\/honeytek.com\/wp-content\/uploads\/2025\/10\/Sound-Level-Meter-768x430.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Deployment Advice for Laboratory Setup<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Define your primary use case:<\/strong> Are you doing high-precision research, regulatory compliance, teaching, or long-term monitoring? That will guide class choice.<\/li>\n\n\n\n<li><strong>Budget wisely:<\/strong> Allocate budget not just for the meter, but for accessories (calibrator, tripod, software), calibration, and maintenance.<\/li>\n\n\n\n<li><strong>Field-test before purchase:<\/strong> If possible, request a demo or sample measurement in your lab environment to verify noise floor, microphone placement, and user interface.<\/li>\n\n\n\n<li><strong>Establish a calibration \/ verification schedule:<\/strong> Document staff training, calibration records, measurement procedures and ambient conditions.<\/li>\n\n\n\n<li><strong>Implement measurement protocols:<\/strong> For example, microphone placement (height, distance from reflecting surfaces), measurement duration, statistical handling of data.<\/li>\n\n\n\n<li><strong>Plan for future expansion:<\/strong> If you might expand into 1\/3-octave analysis or higher-end noise research, consider choosing a meter with that capability (or upgrade path) from the start.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Frequently Asked Questions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q1: Can we use a Class 2 meter in the lab for all tasks?<\/strong><br>Yes for many routine monitoring or teaching tasks. But if your measurements must feed into published research, regulatory compliance, or very low\/high-level sound measurement, a Class 1 meter is strongly recommended (or required by regulation).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q2: What is the difference in tolerances between Class 1 and Class 2?<\/strong><br>The tolerance (maximum deviation) allowed for Class 2 is larger than for Class 1. In general Class 1: tighter error margin, broader frequency response, wider dynamic range.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q3: How often should a sound level meter be calibrated?<\/strong><br>Typically annually or biennially, depending on usage, manufacturer\u2019s recommendation and criticality of measurement. Using a calibrator before each major measurement session is also good practice.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q4: Why is A-weighting used so often (dB(A))?<\/strong><br>Because A-weighting corresponds more closely to human ear sensitivity and is widely mandated in environmental and occupational noise standards.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q5: My lab measures very low sound levels (below 35 dB(A)). Does that affect class requirement?<\/strong><br>Yes. Some regulations specify that when sound levels are very low (e.g., &lt; 35 dB(A)), you should use a higher-accuracy (Class 1) meter because the margin of measurement error becomes more significant relative to the signal level.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q6: Does the Class 1 meter always produce \u201cbetter\u201d measurements regardless of environment?<\/strong><br>A Class 1 meter offers better specification, but only if used correctly (correct placement, calibration, environment). For some lab tasks, a Class 2 meter sufficiently meets the required accuracy. It\u2019s about matching the tool to the requirement, not always \u201cthe best is always best\u201d.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">At <strong>Honeytek<\/strong>, we specialise in precision electronic measurement tools.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>In a laboratory environment, selecting a sound level meter is not simply about picking the \u201ccheapest\u201d or \u201cmost popular\u201d model. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4663,"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-4656","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs","category-news-events"],"acf":[],"_links":{"self":[{"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/posts\/4656","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/comments?post=4656"}],"version-history":[{"count":2,"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/posts\/4656\/revisions"}],"predecessor-version":[{"id":4664,"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/posts\/4656\/revisions\/4664"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/media\/4663"}],"wp:attachment":[{"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/media?parent=4656"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/categories?post=4656"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/honeytek.com\/ru\/wp-json\/wp\/v2\/tags?post=4656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}