{"id":10116963,"date":"2022-05-10T17:00:31","date_gmt":"2022-05-10T22:00:31","guid":{"rendered":"https:\/\/www.erbessd-instruments.com\/?p=10116963"},"modified":"2025-06-17T08:04:13","modified_gmt":"2025-06-17T13:04:13","slug":"phase-analysis","status":"publish","type":"post","link":"https:\/\/www.erbessd-instruments.com\/fr\/tutorials\/phase-analysis\/","title":{"rendered":"Phase Analysis"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"10116963\" class=\"elementor elementor-10116963\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-0828a20 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0828a20\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ea1113d\" data-id=\"ea1113d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-42a8c54 elementor-widget elementor-widget-text-editor\" data-id=\"42a8c54\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h1>Phase Analysis<\/h1>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-356e460 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"356e460\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-39f5ecf\" data-id=\"39f5ecf\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1b1fae2 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"1b1fae2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span lang=\"EN-US\" style=\"font-size: 12pt; font-family: 'Segoe UI', sans-serif; color: black;\">Phase analysis is a key tool in checking the health of machines by looking at their vibrations. It measures how the timing of vibration signals line up with each other, usually from different parts of a machine. This helps find problems like parts not lining up right, balance issues, parts being loose, or gear problems. This guide will cover the basics of phase analysis, why it&#8217;s important, how to measure it, and how it helps find common machine issues.<\/span><\/p><h2 style=\"margin: 2pt 0cm 0cm; break-after: avoid; font-size: 13pt; font-family: 'Calibri Light', sans-serif; color: #2f5496; font-weight: normal; font-style: normal;\"><span lang=\"EN-US\" style=\"border: 1pt solid #e3e3e3; padding: 0cm;\">Understanding Phase Analysis<\/span><\/h2><div style=\"caret-color: #000000; color: #000000; border: 1pt solid #e3e3e3; padding: 0cm;\"><p class=\"MsoNormal\" style=\"margin: 15pt 0cm; font-size: 12pt; font-family: Calibri, sans-serif; border-width: medium; padding: 0cm;\"><span lang=\"EN-US\">In the context of vibration analysis, &#8220;phase&#8221; refers to the measurement of the relative position of one vibrating component with respect to another over time, expressed in degrees of a circle. It&#8217;s a way to describe how synchronized (or out of sync) vibrations are between different points on a machine or between a machine component and a reference signal.<\/span><\/p><\/div><h2 style=\"margin: 2pt 0cm 0cm; break-after: avoid; font-size: 13pt; font-family: 'Calibri Light', sans-serif; color: #2f5496; font-weight: normal; font-style: normal;\"><span lang=\"EN-US\" style=\"border: 1pt solid #e3e3e3; padding: 0cm;\">Why Phase Analysis Matters<\/span><\/h2><div style=\"caret-color: #000000; color: #000000; border: 1pt solid #e3e3e3; padding: 0cm;\"><p class=\"MsoNormal\" style=\"margin: 15pt 0cm; font-size: 12pt; font-family: Calibri, sans-serif; border-width: medium; padding: 0cm;\"><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif;\">Phase analysis helps spot certain mechanical problems not visible through just looking at signal strength. By understanding the movement relation, maintenance teams can more accurately find the source of vibration problems. This precise diagnosis is key to fixing machines efficiently, cutting downtime, and making machines last longer.<\/span><\/p><div style=\"caret-color: #000000; color: #000000; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; border: 1pt solid #e3e3e3; padding: 0cm;\"><p class=\"MsoNormal\" style=\"margin: 15pt 0cm; font-size: 12pt; font-family: Calibri, sans-serif; border: medium; padding: 0cm;\"><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif; color: black;\">Phase analysis is great for finding several machine problems, such as:<\/span><\/p><\/div><p class=\"MsoNormal\" style=\"margin: 15pt 0cm; font-size: 12pt; font-family: Calibri, sans-serif; border-width: medium; padding: 0cm;\"><style class=\"WebKit-mso-list-quirks-style\">\n<\/style><\/p><div style=\"border: 1pt solid #e3e3e3; padding: 0cm 0cm 0cm 5pt; margin-left: 18pt; margin-right: 0cm;\"><ul style=\"margin-bottom: 0cm; margin-top: 0cm;\" type=\"disc\"><li class=\"MsoNormal\" style=\"margin-left: 18pt; border-width: medium; padding: 0cm;\"><b><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif; border: 1pt solid #e3e3e3; padding: 0cm;\">Misalignment<\/span><\/b><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif;\">: It can spot when shafts don&#8217;t line up correctly, which can wear out bearings and couplings faster.<\/span><\/li><li class=\"MsoNormal\" style=\"margin-left: 18pt; border-width: medium; padding: 0cm;\"><b><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif; border: 1pt solid #e3e3e3; padding: 0cm;\">Imbalance<\/span><\/b><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif;\">: It identifies if rotating parts are not balanced by looking at the phase difference between horizontal and vertical vibrations.<\/span><\/li><li class=\"MsoNormal\" style=\"margin-left: 18pt; border-width: medium; padding: 0cm;\"><b><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif; border: 1pt solid #e3e3e3; padding: 0cm;\">Looseness<\/span><\/b><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif;\">: Changes in phase at different frequencies can show if there are loose parts or weak foundations.<\/span><\/li><li class=\"MsoNormal\" style=\"margin-left: 18pt; border-width: medium; padding: 0cm;\"><b><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif; border: 1pt solid #e3e3e3; padding: 0cm;\">Gear Problems<\/span><\/b><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif;\">: It can find issues like worn or damaged gear teeth by looking at the phase timing between the gear mesh frequency and its harmonics.<\/span><\/li><\/ul><\/div><p class=\"MsoNormal\" style=\"margin: 15pt 0cm; font-size: 12pt; font-family: Calibri, sans-serif; border-width: medium; padding: 0cm;\"><span lang=\"EN-US\" style=\"font-family: 'Segoe UI', sans-serif;\">\u00a0<\/span><\/p><\/div><h2 style=\"margin: 2pt 0cm 0cm; break-after: avoid; font-size: 13pt; font-family: 'Calibri Light', sans-serif; color: #2f5496; font-weight: normal; font-style: normal;\"><span lang=\"EN-US\" style=\"border: 1pt solid #e3e3e3; padding: 0cm;\">How to do Phase Analysis<\/span><\/h2><p>The goal of the analysis is to find the phase between horizontal and vertical vibration, or any other direction.<\/p><p><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-1.jpg\" alt=\"\" width=\"592\" height=\"389\" \/><\/p><p>DigivibeMX has 3 ways to determine phase between 2 vibrations :<\/p><ul><li>Phase shift function (graphic method)<\/li><li>Phase by frequencies (numerical method)<\/li><li>Phase using ODS route\u2019s data<\/li><\/ul><h2>Phase Measurement<\/h2><p>Start a <strong>New Analysis <\/strong>and record 3s (or more) with 2 Channels or open 2 signals recorded simultaneously:<\/p><p><img decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-2.jpg\" alt=\"\" width=\"1238\" height=\"325\" \/><\/p><p>You can also open 2 signals recorded simultaneously. Go to \u00ab <strong>Functions <\/strong>\u00bb and select \u00ab <strong>Phase <\/strong>\u00bb :<\/p><p><img decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-3.jpg\" alt=\"\" width=\"1257\" height=\"459\" \/><\/p><p>Choose Channel 1 as reference to be phase 0\u00b0 (or choose Ch2 as reference) and click Ok :<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-4.jpg\" alt=\"\" width=\"361\" height=\"318\" \/><br \/>We get this graphic, now we zoom-in to the frequency we are interested in, in this case 1754 CPM :<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-5.jpg\" alt=\"\" width=\"1186\" height=\"575\" \/><br \/>The phase in this frequency is 226\u00b0. You can place a marker and copy the graph to include it in your report :<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-6.jpg\" alt=\"\" width=\"1251\" height=\"610\" \/><\/p><h2>Phase by Frequencies<\/h2><p>After you record 2 signals simultaneously or if you have the signals stored in the database after doing a route with reference point, from <strong>Machine 1 <\/strong>select <strong>Point 1 \u2013 Horizontal <\/strong>as Channel 1:<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-7.jpg\" alt=\"\" width=\"1228\" height=\"225\" \/><br \/><strong>IMPORTANT :<\/strong><br \/>If the 2 signals were NOT recorded at the same time or using a reference point (like in routes with 2 accelerometers selecting the Reference F), then the phase between the 2 signals is <strong>not valid<\/strong>.<br \/>Now add the 2<sup>nd<\/sup> signal :<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-8.jpg\" alt=\"\" width=\"518\" height=\"229\" \/><br \/><strong>Point 1 &#8211; Vertical <\/strong>direction as Channel 2:<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-9.jpg\" alt=\"\" width=\"1190\" height=\"214\" \/><br \/>Click Ok :<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-10.jpg\" alt=\"\" width=\"349\" height=\"411\" \/><br \/>Now select <strong>Analysis <\/strong>tab on the bottom:<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-11.jpg\" alt=\"\" width=\"1258\" height=\"688\" \/><br \/>Then <strong>Analyze <\/strong>tab on the top:<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-12.jpg\" alt=\"\" width=\"1262\" height=\"670\" \/><br \/>Choose the CPM, the channel as reference (in this case Channel 1) and the table shows the phase between the 2 signals, using the reference channel as Phase 0\u00b0.<br \/>In this example, the phase between Channel 1 and Channel 2 is : <strong>226\u00b0<\/strong><br \/>You can locate the markers on the graph:<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-13.jpg\" alt=\"\" width=\"1249\" height=\"681\" \/><br \/>You can choose other frequencies at the same time and place the markers:<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-14.jpg\" alt=\"\" width=\"1262\" height=\"688\" \/><br \/>You can copy the graphics (right button on the graph) to include it on your report.<\/p><h2>Phase Using the Data of an ODS Route<\/h2><p>After the route with reference point is finished, select the machine and start the \u00ab ODS 3D \u00bb function :<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-15.jpg\" alt=\"\" width=\"1215\" height=\"684\" \/><br \/>Select the route and the RPM for the phase analysis :<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-16.jpg\" alt=\"\" width=\"1257\" height=\"673\" \/><br \/>Select \u00ab Points \u00bb and click on the point you wish to analyze :<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-17.jpg\" alt=\"\" width=\"1255\" height=\"670\" \/><br \/>3 phases are calculated from the reference point :<\/p><ul><li>Horizontal<\/li><li>Vertical<\/li><li>Axial<\/li><\/ul><p>Rest the phase from one direction to another and you have the phase shift between the 2 directions.<br \/><strong>IMPORTANT : <\/strong>Make sure that the vibration measurements were taken on the exact directions shown by the arrows on the 3D model, otherwise check the \u00ab Inv \u00bb box to invert the arrow.<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.erbessd-instruments.com\/wp-content\/uploads\/2020\/07\/Phase-Analysis-18.jpg\" alt=\"\" width=\"611\" height=\"587\" \/><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Phase Analysis Phase analysis is a key tool in checking the health of machines by looking at their vibrations. It measures how the timing of vibration signals line up with each other, usually from different parts of a machine. This helps find problems like parts not lining up right, balance issues, parts being loose, or &#8230; <a title=\"Phase Analysis\" class=\"read-more\" href=\"https:\/\/www.erbessd-instruments.com\/fr\/tutorials\/phase-analysis\/\" aria-label=\"En savoir plus sur Phase Analysis\">Lire la suite<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[260],"tags":[],"class_list":["post-10116963","post","type-post","status-publish","format-standard","hentry","category-tutorials"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.8 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Phase Analysis &#8211; ERBESSD INSTRUMENTS<\/title>\n<meta name=\"description\" content=\"Phase AnalysisPhase analysis is a key tool in checking the health of machines by looking at their vibrations. 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