{"id":100063,"date":"2026-02-15T20:10:07","date_gmt":"2026-02-15T20:10:07","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100063"},"modified":"2026-02-15T20:10:07","modified_gmt":"2026-02-15T20:10:07","slug":"condition-monitoring-iso13373","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/pt_br\/calculators\/condition-monitoring-iso13373\/","title":{"rendered":"Par\u00e2metros de Monitoramento de Condi\u00e7\u00e3o \u2014 ISO 13373 | Limiares de Alarme e Perigo | Ferramenta Gratuita"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Condition Monitoring ISO 13373 Reference\",\"description\":\"ISO 13373 condition monitoring parameters with alarm and danger thresholds for rotating machinery.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/condition-monitoring-iso13373\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any (Web Browser)\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"datePublished\":\"2024-01-01\",\"dateModified\":\"2025-02-14\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"What is ISO 13373?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ISO 13373 is a multi-part standard for condition monitoring and diagnostics of machines using vibration. It covers general procedures, data processing, guidelines for vibration diagnosis, and recommendations for monitoring parameters and thresholds.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the difference between alarm and danger thresholds?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Alarm threshold indicates abnormal condition requiring investigation and planned maintenance. Danger threshold indicates imminent failure risk requiring immediate action \u2014 shutdown or load reduction. Danger is typically 2\u00d7 the alarm value.\"}},\n{\"@type\":\"Question\",\"name\":\"How do I set vibration alarm levels?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Alarm levels can be set based on: (1) absolute ISO standards, (2) baseline \u00d7 multiplier (e.g., 2.5\u00d7 baseline for alarm, 4\u00d7 for danger), or (3) statistical methods using historical data (mean + 2\u03c3 for alarm, mean + 3\u03c3 for danger).\"}},\n{\"@type\":\"Question\",\"name\":\"Which vibration parameter should I monitor?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Velocity (mm\/s RMS, 10\u20131000 Hz) is the most common for general machinery per ISO 10816. Displacement (\u03bcm p-p) for shaft relative vibration per ISO 7919. Acceleration (g) for high-frequency defects like bearing faults and gear mesh.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the relationship between ISO 13373 and ISO 10816?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ISO 13373 provides general guidelines for condition monitoring methodology, while ISO 10816 (now ISO 20816) provides specific numerical vibration severity limits for different machine categories. They are complementary standards.\"}}\n]}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[\n{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},\n{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},\n{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Condition Monitoring ISO 13373\",\"item\":\"https:\/\/vibromera.eu\/calculators\/condition-monitoring-iso13373\/\"}\n]}\n<\/script>\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n\n<link 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16px;font-size:13px;color:var(--vc-ink-muted)}.vc-footer a{color:var(--vc-accent);text-decoration:none}.vc-footer a:hover{text-decoration:underline}.vc-footer-links{margin-top:8px;font-size:12px}.vc-footer-links a{margin:0 8px}\n@media print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo{display:none!important}}\n.vc-zone-good{color:var(--vc-green);font-weight:600}.vc-zone-alarm{color:var(--vc-yellow);font-weight:600}.vc-zone-danger{color:var(--vc-red);font-weight:600}\n<\/style>\n\n<div class=\"vc-calculator\" id=\"vc-condition-monitoring\">\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool \u2014 #028<\/p>\n    <h1 class=\"vc-header-title\">Condition Monitoring \u2014 ISO 13373<\/h1>\n    <p class=\"vc-header-subtitle\">Reference tool for ISO 13373 condition monitoring parameters. Select machine type and enter measured vibration to determine status against alarm and danger thresholds.<\/p>\n    <div class=\"vc-badges\"><span class=\"vc-badge\">ISO 13373<\/span><span class=\"vc-badge\">ISO 10816 \/ 20816<\/span><span class=\"vc-badge\">Alarm \/ Danger<\/span><\/div>\n<\/header>\n\n<div class=\"vc-card\">\n    <form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\">\n        <div class=\"vc-form-grid\">\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-machine\">Machine Type<\/label>\n                <select class=\"vc-select\" id=\"vc-machine\">\n                    <option value=\"group1\" selected>Group 1 \u2014 Large machines, rigid foundation (>300 kW)<\/option>\n                    <option value=\"group2\">Group 2 \u2014 Large machines, flexible foundation<\/option>\n                    <option value=\"group3\">Group 3 \u2014 Medium machines (15\u2013300 kW), rigid<\/option>\n                    <option value=\"group4\">Group 4 \u2014 Small machines (<15 kW)<\/option>\n                    <option value=\"pump\">Pumps (ISO 10816-7)<\/option>\n                    <option value=\"compressor\">Reciprocating compressors<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-param\">Vibration Parameter<\/label>\n                <select class=\"vc-select\" id=\"vc-param\">\n                    <option value=\"velocity\" selected>Velocity (mm\/s RMS)<\/option>\n                    <option value=\"displacement\">Displacement (\u03bcm p-p)<\/option>\n                    <option value=\"acceleration\">Acceleration (g RMS)<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-measured\">Measured Value <span class=\"vc-label-hint\" id=\"vc-meas-hint\">(mm\/s RMS)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-measured\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 4.5\" value=\"4.5\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-baseline\">Baseline Value <span class=\"vc-label-hint\">(optional)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-baseline\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 1.5\">\n            <\/div>\n        <\/div>\n        <div class=\"vc-presets\">\n            <div class=\"vc-presets-label\">Quick presets<\/div>\n            <button type=\"button\" class=\"vc-preset-btn\" data-mc=\"group1\" data-pr=\"velocity\" data-v=\"4.5\">Large motor \u2014 4.5 mm\/s<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-mc=\"group3\" data-pr=\"velocity\" data-v=\"2.8\">Medium pump \u2014 2.8 mm\/s<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-mc=\"group4\" data-pr=\"velocity\" data-v=\"1.2\">Small fan \u2014 1.2 mm\/s<\/button>\n        <\/div>\n    <\/form>\n\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\">\n            <h2 class=\"vc-results-title\">Assessment<\/h2>\n            <button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg> Copy<\/button>\n        <\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\">\n                <div class=\"vc-rcard-label\">Machine Status<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-status\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Zone A\/B Boundary (Good)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-zoneab\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Zone B\/C Boundary (Alarm)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-zonebc\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Zone C\/D Boundary (Danger)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-zonecd\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Change from Baseline<\/div><div class=\"vc-rcard-value\" id=\"vc-r-change\">\u2014<\/div><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-section vc-open\" id=\"vc-sec-theory\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Theory &amp; Reference<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner vc-theory\">\n            <h3>ISO 10816 Vibration Severity Zones<\/h3>\n            <p>Vibration severity is classified into four zones:<\/p>\n            <ul>\n                <li><strong>Zone A<\/strong> \u2014 New or reconditioned machines<\/li>\n                <li><strong>Zone B<\/strong> \u2014 Acceptable for unrestricted long-term operation<\/li>\n                <li><strong>Zone C<\/strong> \u2014 Alarm \u2014 acceptable only for limited periods<\/li>\n                <li><strong>Zone D<\/strong> \u2014 Danger \u2014 may cause damage<\/li>\n            <\/ul>\n\n            <h3>Velocity Thresholds (mm\/s RMS)<\/h3>\n            <table class=\"vc-table\">\n                <thead><tr><th>Zone Boundary<\/th><th>Group 1<\/th><th>Group 2<\/th><th>Group 3<\/th><th>Group 4<\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>A\/B<\/td><td>2.3<\/td><td>3.5<\/td><td>1.4<\/td><td>0.7<\/td><\/tr>\n                    <tr><td>B\/C (Alarm)<\/td><td>4.5<\/td><td>7.1<\/td><td>2.8<\/td><td>1.8<\/td><\/tr>\n                    <tr><td>C\/D (Danger)<\/td><td>7.1<\/td><td>11.2<\/td><td>4.5<\/td><td>4.5<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>Baseline Monitoring<\/h3>\n            <div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div>\n            <p>A change ratio &gt; 2.5\u00d7 baseline suggests developing fault. &gt; 4\u00d7 requires immediate investigation.<\/p>\n\n            <div class=\"vc-info-box\"><p><strong>\u2139\ufe0f Note:<\/strong> These are general guidelines from ISO 10816-3. Specific machine types may have different criteria per specialized parts of ISO 20816.<\/p><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-section\" id=\"vc-sec-related\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udd17<\/span><span class=\"vc-section-title\">Related Calculators<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-related\">\n        <a class=\"vc-related-link\" href=\"\/calculators\/vibration-velocity\/\">Vibration Velocity (ISO 10816)<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/vibration-overall-level\/\">Overall Vibration Level<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/bearing-vibration-anderon\/\">Bearing Vibration (Anderon)<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/vibration-instrument-class\/\">Instrument Class (ISO 2954)<\/a>\n    <\/div><\/div><\/div>\n<\/div>\n\n<div class=\"vc-section\" id=\"vc-sec-faq\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\u2753<\/span><span class=\"vc-section-title\">Frequently Asked Questions<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div><\/div><\/div>\n<\/div>\n\n<div class=\"vc-promo\"><div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Monitor machine condition with professional vibration analyzers. ISO-compliant measurement and reporting. Used in 50+ countries.<\/div><a class=\"vc-promo-link\" href=\"https:\/\/vibromera.eu\/\" target=\"_blank\" rel=\"noopener\">Learn More<\/a><\/div>\n\n<footer class=\"vc-footer\">\n    <p>\u00a9 2024\u20132025 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a> \u2014 Engineering Calculators<\/p>\n    <p style=\"font-size:12px;margin-top:4px;\">Based on ISO 13373 \/ ISO 10816-3 \/ ISO 20816. Last updated: February 2025<\/p>\n    <div class=\"vc-footer-links\"><a href=\"\/calculators\/engineering-calculators\/\">All Calculators<\/a><a href=\"https:\/\/vibromera.eu\/contacts\/\">Contact<\/a><\/div>\n<\/footer>\n<\/div>\n\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.js\"><\/script>\n<script>\n(function(){\n    'use strict';\n    var SLUG='condition-monitoring-iso13373';\n    function $(id){return document.getElementById(id)}\n    function fmt(n,d){if(isNaN(n)||!isFinite(n))return '\u2014';return n.toFixed(d===undefined?1:d).replace(\/(\\.\\d*?)0+$\/,'$1').replace(\/\\.$\/,'')}\n\n    \/\/ ISO 10816-3 velocity thresholds [A\/B, B\/C, C\/D] mm\/s RMS\n    var thresholds={\n        group1:{velocity:[2.3,4.5,7.1],displacement:[29,57,90],acceleration:[0.25,0.5,0.8]},\n        group2:{velocity:[3.5,7.1,11.2],displacement:[45,90,140],acceleration:[0.4,0.8,1.25]},\n        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'+$('vc-machine').options[$('vc-machine').selectedIndex].text+'\\nMeasured: '+$('vc-measured').value+'\\nStatus: '+$('vc-r-status').textContent+'\\nA\/B: '+$('vc-r-zoneab').textContent+'\\nB\/C (Alarm): '+$('vc-r-zonebc').textContent+'\\nC\/D (Danger): '+$('vc-r-zonecd').textContent+'\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nvibromera.eu\/calculators\/condition-monitoring-iso13373\/';\n        if(navigator.clipboard){navigator.clipboard.writeText(text).then(function(){var b=$('vc-copy-btn');b.classList.add('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg> Copied!';setTimeout(function(){b.classList.remove('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" 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It covers measurement procedures, data processing, diagnostic guidelines, and threshold recommendations.<\/p>'},\n        {q:'What is the difference between alarm and danger thresholds?',a:'<p>Alarm (Zone C boundary) means abnormal condition \u2014 plan maintenance. Danger (Zone D boundary) means imminent failure risk \u2014 act immediately. Danger is typically 1.5\u20132\u00d7 the alarm value.<\/p>'},\n        {q:'How do I set vibration alarm levels?',a:'<p>Methods: (1) Absolute ISO standards, (2) Baseline \u00d7 multiplier (2.5\u00d7 for alarm, 4\u00d7 for danger), (3) Statistical (mean + 2\u03c3 alarm, mean + 3\u03c3 danger). Use the most restrictive.<\/p>'},\n        {q:'Which vibration parameter should I monitor?',a:'<p>Velocity (mm\/s RMS, 10\u20131000 Hz) for general machinery. Displacement (\u03bcm p-p) for shaft vibration. Acceleration (g) for high-frequency faults (bearings, gears).<\/p>'},\n        {q:'What is the relationship between ISO 13373 and ISO 10816?',a:'<p>ISO 13373 provides monitoring methodology. ISO 10816 \/ ISO 20816 provides specific numerical vibration severity limits for different machine categories. They are complementary.<\/p>'}\n    ];\n    var fl=$('vc-faq-list');faqData.forEach(function(f){fl.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>'+f.q+'<\/span><svg class=\"vc-faq-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-faq-a\"><div class=\"vc-faq-a-inner\">'+f.a+'<\/div><\/div><\/div>'});\n    fl.addEventListener('click',function(e){var b=e.target.closest('.vc-faq-q');if(!b)return;b.closest('.vc-faq-item').classList.toggle('vc-open')});\n\n    function saveHistory(entry){var key='vc_history_'+SLUG;var arr=[];try{arr=JSON.parse(localStorage.getItem(key))||[]}catch(e){}entry._ts=new Date().toISOString();arr.unshift(entry);if(arr.length>10)arr=arr.slice(0,10);try{localStorage.setItem(key,JSON.stringify(arr))}catch(e){}}\n\n    function renderFormulas(){try{\n        katex.render('\\\\text{Change Ratio} = \\\\frac{V_{measured}}{V_{baseline}}',$('vc-katex-1'),{displayMode:true,throwOnError:false});\n    }catch(e){}}\n\n    function init(){renderFormulas();calculate()}\n    if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',init)}else{init()}\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Refer\u00eancia gratuita de par\u00e2metros de monitoramento de condi\u00e7\u00e3o ISO 13373. Selecione o tipo de m\u00e1quina e o par\u00e2metro de vibra\u00e7\u00e3o para visualizar os valores de limite de alarme e perigo para m\u00e1quinas rotativas.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100063","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/calculator\/100063","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/calculator\/100063\/revisions"}],"predecessor-version":[{"id":100374,"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/calculator\/100063\/revisions\/100374"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/media?parent=100063"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/categories?post=100063"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt_br\/wp-json\/wp\/v2\/tags?post=100063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}