{"id":56963,"date":"2025-06-06T07:49:31","date_gmt":"2025-06-06T07:49:31","guid":{"rendered":"https:\/\/autoolstore.com\/?post_type=product&#038;p=56963"},"modified":"2026-09-20T08:36:34","modified_gmt":"2026-09-20T16:36:34","slug":"autool-lm100-refrigerant-leak-detector","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/product\/autool-lm100-refrigerant-leak-detector\/","title":{"rendered":"AUTOOL LM100 Digital Vacuum Gauge"},"content":{"rendered":"\n\n\r\n<div class=\"autool-page-shell\"><main class=\"autool-description autool-product-page\" data-autool-lightbox=\"off\" data-autool-mobile-nav=\"false\" data-autool-rail-controls=\"true\" id=\"lm100-product-page\"><section class=\"autool-section autool-product-hero autool-section--overview\" data-autool-nav=\"Overview\" data-autool-surface=\"dark\" id=\"autool-overview\"><div class=\"autool-layout-container autool-product-hero__grid\">\r\n<div class=\"autool-product-hero__copy\">\r\n<p class=\"autool-product-hero__eyebrow\">AUTOOL LM100 \u00b7 Compact Digital Vacuum Gauge<\/p>\r\n<h2 class=\"autool-product-hero__title\">Track Evacuation and Verify Vacuum Hold<\/h2>\r\n<p class=\"autool-product-hero__lead\">Monitor refrigeration-system evacuation and vacuum hold with this digital vacuum gauge. Measure 0\u20132000 mbar \/ 0\u20131500 Torr with \u00b10.2% full-scale vacuum accuracy and resolution down to 0.1 mbar. The 2.8-inch backlit display presents vacuum and temperature readings in selectable units, while the communication interface shares synchronized measurement data with a separate LM130.<\/p>\r\n<ul aria-label=\"AUTOOL LM100 key benefits\" class=\"autool-product-hero__capabilities\">\r\n<li>0\u20132000 mbar Vacuum Range<\/li>\r\n<li>\u00b10.2% FS Vacuum Accuracy<\/li>\r\n<li>Vacuum-Hold Monitoring<\/li>\r\n<li>2.8-Inch Backlit Readings<\/li>\r\n<li>LM130 Data Connection<\/li>\r\n<\/ul>\r\n<nav aria-label=\"AUTOOL LM100 sections\" class=\"autool-product-hero__actions\"><a class=\"autool-product-button autool-product-button--primary\" href=\"#autool-features\">Explore Features<\/a><a class=\"autool-product-button\" href=\"#autool-use\">View Workflow<\/a><a class=\"autool-product-button\" href=\"#autool-comparison\">Specs &amp; Compare<\/a><\/nav>\r\n<\/div>\r\n<figure class=\"autool-product-hero__media\"><img alt=\"AUTOOL LM100 smart digital vacuum gauge main product image\" decoding=\"async\" fetchpriority=\"high\" loading=\"eager\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2023\/05\/AUTOOL-LM100-Smart-Digital-Vaccum-Gauge.jpg\"\/><\/figure>\r\n<\/div><\/section><aside aria-label=\"AUTOOL LM100 at a glance\" class=\"autool-product-metrics\"><div class=\"autool-product-metrics__inner\">\r\n<div class=\"autool-product-metric\">\r\n<strong>0\u20132000 mbar<\/strong><span>Vacuum Measurement Range<\/span>\r\n<\/div>\r\n<div class=\"autool-product-metric\">\r\n<strong>\u00b10.2% of full scale<\/strong><span>Measurement Accuracy<\/span>\r\n<\/div>\r\n<div class=\"autool-product-metric\">\r\n<strong>0.1 mbar<\/strong><span>Finest Vacuum Resolution<\/span>\r\n<\/div>\r\n<div class=\"autool-product-metric\">\r\n<strong>2.8 in<\/strong><span>Backlit Display<\/span>\r\n<\/div>\r\n<\/div><\/aside><section class=\"autool-section autool-product-section--soft autool-section--value\" data-autool-surface=\"base\" id=\"autool-features\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Key Features<\/p>\r\n<h2 class=\"autool-title\">Fine Vacuum Readings with Retention Timing<\/h2><\/header><div class=\"autool-product-grid autool-product-grid--3 autool-product-rail\" data-autool-rail=\"features\">\r\n<article class=\"autool-product-card\"><h3>High-Precision Vacuum and Temperature Measurement<\/h3><p>Measure vacuum from 0 to 2000 mbar \/ 0 to 1500 Torr with resolution of 0.1 hPa, 0.1 mbar, 0.1 Torr, or 0.01 inHg depending on the selected unit. Vacuum measurement accuracy is \u00b10.2% of full scale, with temperature accuracy up to \u00b10.5\u00b0C \/ \u00b10.9\u00b0F \/ \u00b10.5 K.<\/p><\/article><article class=\"autool-product-card\"><h3>Evacuation Monitoring<\/h3>\r\n<p>Follow vacuum level changes while a refrigeration system is being evacuated instead of relying on elapsed pump time alone.<\/p><\/article><article class=\"autool-product-card\"><h3>Pressure-Retention Test<\/h3>\r\n<p>Observe pressure changes after system isolation to assess whether sealing needs further investigation.<\/p><\/article><article class=\"autool-product-card\"><h3>LM130 Data Transfer<\/h3>\r\n<p>Connect the LM100 to the separate AUTOOL LM130 through the built-in communication interface for synchronized measurement data.<\/p><\/article><article class=\"autool-product-card\"><h3>Seven Selectable Units<\/h3>\r\n<p>Switch among hPa, mbar, Torr, inHg, \u00b0C, \u00b0F and K from the instrument rather than converting readings off-device.<\/p><\/article><article class=\"autool-product-card\"><h3>Backlit Fast-Response Display<\/h3>\r\n<p>The 2.8-inch backlit screen responds in about 0.5 seconds for readable monitoring in bright or dim service areas.<\/p><\/article><article class=\"autool-product-card\"><h3>Field-Friendly Housing<\/h3>\r\n<p>High-strength engineering plastic, non-slip silicone sides, a brass valve body and a foldable hook support handheld or hanging use.<\/p><\/article><article class=\"autool-product-card\"><h3>Automatic Power-Off<\/h3>\r\n<p>The gauge turns off after 20 minutes without operation to preserve battery power.<\/p><\/article>\r\n<article class=\"autool-product-card\"><h3>3 Years Warranty Support<\/h3><p>Main unit: 3-year warranty. Standard accessories: 1-year warranty. <a href=\"https:\/\/autoolstore.com\/warranty-policy\/\" rel=\"noopener\" target=\"_blank\">Warranty Policy<\/a>.<\/p><\/article><\/div>\r\n<\/div><\/section><section class=\"autool-section autool-section--workflow autool-section--workflow-anchor\" data-autool-surface=\"dark\" id=\"autool-use\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">How to Use<\/p>\r\n<h2 class=\"autool-title\">Evacuate, Isolate, Watch, and Record<\/h2><\/header><div class=\"autool-workflow\" data-autool-workflow=\"\" data-workflow-mode=\"panels\">\r\n<div aria-label=\"lm100 workflow\" class=\"autool-workflow__tabs\" data-workflow-tabs=\"\" role=\"tablist\">\r\n<button aria-controls=\"lm100-panel-0\" aria-selected=\"true\" class=\"autool-workflow__tab\" data-workflow-step=\"0\" id=\"lm100-tab-0\" role=\"tab\" tabindex=\"0\" type=\"button\">01<br\/><wbr\/>Confirm<wbr\/> The<wbr\/> Test<wbr\/> Limits<\/button><button aria-controls=\"lm100-panel-1\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"1\" id=\"lm100-tab-1\" role=\"tab\" tabindex=\"-1\" type=\"button\">02<br\/><wbr\/>Connect<wbr\/> And<wbr\/> Select<wbr\/> Units<\/button><button aria-controls=\"lm100-panel-2\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"2\" id=\"lm100-tab-2\" role=\"tab\" tabindex=\"-1\" type=\"button\">03<br\/><wbr\/>Monitor<wbr\/> Evacuation<\/button><button aria-controls=\"lm100-panel-3\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"3\" id=\"lm100-tab-3\" role=\"tab\" tabindex=\"-1\" type=\"button\">04<br\/><wbr\/>Isolate<wbr\/> And<wbr\/> Observe<\/button><button aria-controls=\"lm100-panel-4\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"4\" id=\"lm100-tab-4\" role=\"tab\" tabindex=\"-1\" type=\"button\">05<br\/><wbr\/>Interpret<wbr\/> And<wbr\/> Follow<wbr\/> Up<\/button>\r\n<\/div>\r\n<div class=\"autool-workflow__position\">\r\n<span class=\"autool-workflow__position-label\">Step progress<\/span><span class=\"autool-workflow__progress\"><span class=\"autool-workflow__progress-bar\" data-workflow-progress=\"\"><\/span><\/span><span class=\"autool-workflow__position-count\" data-workflow-count=\"\">1 \/ 5<\/span>\r\n<\/div>\r\n<div class=\"autool-workflow__content\">\r\n<div class=\"autool-workflow__main\">\r\n<div class=\"autool-workflow__panels\">\r\n<article aria-labelledby=\"lm100-tab-0\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" id=\"lm100-panel-0\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">01<\/div>\r\n<h3 class=\"autool-workflow__title\">Confirm The Test Limits<\/h3>\r\n<p class=\"autool-workflow__description\">Check the equipment rating, the LM100 measuring range and the working-pressure rating of the hose before connection.<\/p><\/article><article aria-labelledby=\"lm100-tab-1\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm100-panel-1\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">02<\/div>\r\n<h3 class=\"autool-workflow__title\">Connect And Select Units<\/h3>\r\n<p class=\"autool-workflow__description\">Use a suitable rated hose, position the gauge with the foldable hook if useful, and choose the vacuum or temperature unit required by the procedure.<\/p><\/article><article aria-labelledby=\"lm100-tab-2\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm100-panel-2\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">03<\/div>\r\n<h3 class=\"autool-workflow__title\">Monitor Evacuation<\/h3>\r\n<p class=\"autool-workflow__description\">Run the approved evacuation procedure and follow the live vacuum trend until the service specification is reached.<\/p><\/article><article aria-labelledby=\"lm100-tab-3\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm100-panel-3\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">04<\/div>\r\n<h3 class=\"autool-workflow__title\">Isolate And Observe<\/h3>\r\n<p class=\"autool-workflow__description\">Close the system as required, use pressure-retention mode and observe the change over the specified test period.<\/p><\/article><article aria-labelledby=\"lm100-tab-4\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm100-panel-4\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">05<\/div>\r\n<h3 class=\"autool-workflow__title\">Interpret And Follow Up<\/h3>\r\n<p class=\"autool-workflow__description\">Compare the result with the equipment maker&#8217;s procedure. If pressure changes, inspect connections and continue with an approved leak-location method before charging.<\/p><\/article>\r\n<\/div>\r\n<div class=\"autool-workflow__actions\">\r\n<button class=\"autool-workflow__button\" data-workflow-prev=\"\" disabled=\"\" type=\"button\">\u2190 Previous<\/button><button class=\"autool-workflow__button autool-workflow__button--next\" data-workflow-next=\"\" type=\"button\">Next step \u2192<\/button>\r\n<\/div>\r\n<\/div>\r\n<aside class=\"autool-workflow__safety\" data-workflow-safety=\"\"><h3 class=\"autool-workflow__safety-title\">Before You Start<\/h3>\r\n<ul class=\"autool-workflow__safety-list\">\r\n<li>Gauge-pressure measuring range: -101 kPa to 6 MPa (approximately -1.01 to 60 bar). Keep operation within the measuring range; 10 MPa \/ 100 bar is the absolute limit.<\/li>\r\n<li>The standard hose is listed for 600 PSI working pressure and 3000 PSI limit pressure. Use a suitable replacement when the job requires a different rating.<\/li>\r\n<\/ul><\/aside>\r\n<\/div>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--soft\" data-autool-surface=\"base\" id=\"autool-safety\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Safety &amp; Compatibility<\/p>\r\n<h2 class=\"autool-title\">Protect the Gauge from Pressure and Refrigerant<\/h2><\/header><div class=\"autool-product-grid autool-product-grid--3 autool-product-rail\" data-autool-rail=\"safety\">\r\n<article class=\"autool-product-card\"><h3>Respect The Measuring Range<\/h3>\r\n<p>Gauge-pressure measuring range: -101 kPa to 6 MPa (approximately -1.01 to 60 bar). Keep operation within this range; 10 MPa \/ 100 bar is the absolute limit, not an operating target.<\/p><\/article><article class=\"autool-product-card\"><h3>Check Hose Ratings Separately<\/h3><p>Standard hose working pressure: 600 PSI \/ approximately 4.13 MPa \/ 41.3 bar. Its 3000 PSI \/ approximately 20.68 MPa \/ 206.8 bar limit is not a working-pressure rating; use a suitably rated replacement when required.<\/p><\/article><article class=\"autool-product-card\"><h3>Use PPE And Ventilation<\/h3>\r\n<p>Wear suitable protective equipment and work in a well-ventilated area when servicing pressurized refrigerant systems.<\/p><\/article><article class=\"autool-product-card\"><h3>Avoid Hazardous Environments<\/h3>\r\n<p>Do not use or store the instrument in high heat, high humidity, flammable or explosive areas, or strong electromagnetic fields; do not modify its circuitry.<\/p><\/article><article class=\"autool-product-card\"><h3>Choose the Right A\/C Tool<\/h3>\r\n<p>Use LM100 for vacuum monitoring and pressure-retention checks. Refrigerant identification, charging and leak location require the appropriate service tools.<\/p><\/article>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--white\" data-autool-surface=\"white\" id=\"autool-results\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Test Results<\/p>\r\n<h2 class=\"autool-title\">Read Vacuum Depth and Retention Together<\/h2><\/header><div class=\"autool-product-grid autool-product-grid--3 autool-product-rail\" data-autool-rail=\"results\">\r\n<article class=\"autool-product-card\"><h3>A Falling Vacuum Reading During Evacuation<\/h3>\r\n<p>Shows the system pressure is being reduced; judge completion against the equipment or service procedure, not a universal time target.<\/p><\/article><article class=\"autool-product-card\"><h3>A Stable Isolated Reading<\/h3>\r\n<p>Compare the stabilized isolated reading with the specified hold period, then inspect connections or continue with an approved leak check if pressure changes.<\/p><\/article><article class=\"autool-product-card\"><h3>A Changing Isolated Reading<\/h3>\r\n<p>Can indicate a connection, hose or system-sealing problem. Recheck the setup and use an approved method to locate the cause.<\/p><\/article><article class=\"autool-product-card\"><h3>Repeatability Matters<\/h3>\r\n<p>Use the same connection, units, stabilization period and environmental conditions when comparing repeat tests.<\/p><\/article>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-comparison\" data-autool-nav=\"Spec&amp;Comparison\" data-autool-surface=\"dark\" id=\"autool-comparison\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Compare Models<\/p>\r\n<h2 class=\"autool-title\">Choose a Vacuum or Manifold Tool<\/h2><\/header><div class=\"autool-model-compare\" data-autool-model-compare=\"\" data-current-model=\"lm100\">\r\n<button aria-controls=\"compare46-01_lm100-compare-model-picker\" aria-expanded=\"false\" aria-label=\"Open model comparison selector\" class=\"autool-model-compare__mobile-trigger\" data-compare-picker-open=\"\" type=\"button\"><span class=\"autool-model-compare__mobile-trigger-copy\"><strong>Compare models<\/strong><span data-compare-mobile-summary=\"\">Selected: LM100<\/span><\/span><span class=\"autool-model-compare__mobile-trigger-count\" data-compare-mobile-count=\"\">1<\/span><\/button>\r\n<button aria-label=\"Close model selector\" class=\"autool-model-compare__scrim\" data-compare-picker-close=\"\" tabindex=\"-1\" type=\"button\"><\/button>\r\n<div aria-labelledby=\"compare46-01_lm100-compare-picker-title\" class=\"autool-model-compare__selector\" id=\"compare46-01_lm100-compare-model-picker\" role=\"group\">\r\n<div class=\"autool-model-compare__selector-head\">\r\n<div class=\"autool-model-compare__selector-copy\">\r\n<h3 class=\"autool-model-compare__legend\" id=\"compare46-01_lm100-compare-picker-title\">Model Guide<\/h3>\r\n<p class=\"autool-model-compare__instruction\">Choose one or more models. LM100 is selected by default.<\/p>\r\n<\/div>\r\n<div class=\"autool-model-compare__selector-tools\">\r\n<div class=\"autool-model-compare__count\" data-compare-count=\"\">1 model selected<\/div>\r\n<button aria-label=\"Close model selector\" class=\"autool-model-compare__picker-close\" data-compare-picker-close=\"\" type=\"button\">\u00d7<\/button>\r\n<\/div>\r\n<\/div>\r\n<div aria-label=\"Models available for comparison\" class=\"autool-model-compare__grid\" role=\"list\"><label class=\"autool-model-option autool-is-selected\" data-model-card=\"lm100\" role=\"listitem\"><input checked=\"\" data-model-checkbox=\"\" type=\"checkbox\" value=\"lm100\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">LM100<\/strong><span class=\"autool-model-option__tier\">Vacuum \/ pressure retention<\/span><\/span><span class=\"autool-model-option__current\">Current model<\/span><\/label><label class=\"autool-model-option\" data-model-card=\"lm70\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"lm70\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">LM70<\/strong><span class=\"autool-model-option__tier\">Dual pressure \/ SH\/SC<\/span><\/span><\/label><label class=\"autool-model-option\" data-model-card=\"lm120\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"lm120\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">LM120<\/strong><span class=\"autool-model-option__tier\">Digital manifold \/ Charging valves<\/span><\/span><\/label><label class=\"autool-model-option\" data-model-card=\"lm130\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"lm130\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">LM130<\/strong><span class=\"autool-model-option__tier\">Smart manifold \/ LM100 link<\/span><\/span><\/label><label class=\"autool-model-option\" data-model-card=\"lm150\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"lm150\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">LM150<\/strong><span class=\"autool-model-option__tier\">93 profiles \/ 2 clamps<\/span><\/span><\/label><label class=\"autool-model-option\" data-model-card=\"lm160\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"lm160\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">LM160<\/strong><span class=\"autool-model-option__tier\">Program control \/ 8 languages<\/span><\/span><\/label><\/div>\r\n<div class=\"autool-model-compare__selection-bar\">\r\n<p aria-live=\"polite\" class=\"autool-model-compare__status\" data-compare-status=\"\" id=\"compare46-01_lm100-compare-result-status\" role=\"status\">LM100 is selected. Choose another model for a side-by-side comparison.<\/p>\r\n<div class=\"autool-model-compare__selection-actions\">\r\n<button class=\"autool-model-compare__clear\" data-compare-clear=\"\" disabled=\"\" type=\"button\">Reset selection<\/button><button class=\"autool-model-compare__done\" data-compare-picker-close=\"\" type=\"button\">Done<\/button>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"autool-model-compare__result\" data-compare-result=\"\">\r\n<div class=\"autool-model-compare__result-toolbar\">\r\n<h3 class=\"autool-model-compare__result-title\" data-compare-title=\"\" id=\"compare46-01_lm100-compare-result-title\">LM100 comparison<\/h3>\r\n<label aria-disabled=\"true\" class=\"autool-model-compare__difference-toggle\" data-differences-label=\"\"><input data-differences-only=\"\" disabled=\"\" type=\"checkbox\"\/> Show differences only<\/label>\r\n<\/div>\r\n<div data-compare-table=\"\">\r\n<div class=\"autool-compare-matrix__empty\" hidden=\"\">No model is selected. Choose a model to compare.<\/div>\r\n<div aria-describedby=\"compare46-01_lm100-compare-result-status\" aria-labelledby=\"compare46-01_lm100-compare-result-title\" class=\"autool-compare-matrix-wrap\" role=\"region\" tabindex=\"0\">\r\n<table class=\"autool-compare-matrix\" data-autool-columns=\"1\"><caption class=\"autool-table-caption--accessible\">Compare Your Options<\/caption><colgroup><col class=\"autool-compare-matrix__criteria-col\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"lm100\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"lm70\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"lm120\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"lm130\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"lm150\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"lm160\" hidden=\"\"\/><\/colgroup><thead><tr><th scope=\"col\">Choose For Your Task<\/th><th data-compare-model=\"lm100\" scope=\"col\">LM100<\/th><th data-compare-model=\"lm70\" hidden=\"\" scope=\"col\">LM70<\/th><th data-compare-model=\"lm120\" hidden=\"\" scope=\"col\">LM120<\/th><th data-compare-model=\"lm130\" hidden=\"\" scope=\"col\">LM130<\/th><th data-compare-model=\"lm150\" hidden=\"\" scope=\"col\">LM150<\/th><th data-compare-model=\"lm160\" hidden=\"\" scope=\"col\">LM160<\/th><\/tr><\/thead><tbody><tr class=\"autool-compare-matrix__category\" data-compare-category=\"comparison-group-1\">\r\n<th class=\"autool-compare-matrix__category-label\" scope=\"rowgroup\"><span class=\"autool-compare-matrix__category-label-inner\">Selection Criteria<\/span><\/th>\r\n<td class=\"autool-compare-matrix__category-track\" colspan=\"1\" data-compare-category-track=\"\"><span aria-hidden=\"true\" class=\"autool-compare-matrix__category-progress\" data-autool-progress-order-ready=\"yes\" data-compare-category-progress=\"\"><span class=\"autool-compare-matrix__category-progress-label\">Slide \/ drag<\/span><span class=\"autool-compare-matrix__category-progress-meter\"><span class=\"autool-compare-matrix__category-progress-bar\"><\/span><\/span><span class=\"autool-compare-matrix__category-progress-count\" data-compare-category-count=\"\">1 \/ 1<\/span><\/span><\/td>\r\n<\/tr><tr data-compare-group=\"comparison-group-1\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Primary task<\/th><td data-compare-model=\"lm100\"><div class=\"autool-compare-matrix__value\">Vacuum and pressure-retention measurement<\/div><\/td><td data-compare-model=\"lm70\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Dual-pressure manifold with superheat\/subcooling<\/div><\/td><td data-compare-model=\"lm120\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Digital manifold service<\/div><\/td><td data-compare-model=\"lm130\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Smart manifold kit with LM100 link<\/div><\/td><td data-compare-model=\"lm150\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Digital manifold with wired clamps<\/div><\/td><td data-compare-model=\"lm160\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Program-controlled multilingual manifold<\/div><\/td><\/tr><tr data-compare-group=\"comparison-group-1\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Refrigerant charging valves<\/th><td data-compare-model=\"lm100\"><div class=\"autool-compare-matrix__value\">No<\/div><\/td><td data-compare-model=\"lm70\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Yes<\/div><\/td><td data-compare-model=\"lm120\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Yes<\/div><\/td><td data-compare-model=\"lm130\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Confirm before ordering<\/div><\/td><td data-compare-model=\"lm150\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Yes<\/div><\/td><td data-compare-model=\"lm160\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Yes<\/div><\/td><\/tr><tr data-compare-group=\"comparison-group-1\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">LM130 synchronized link<\/th><td data-compare-model=\"lm100\"><div class=\"autool-compare-matrix__value\">Supported<\/div><\/td><td data-compare-model=\"lm70\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><td data-compare-model=\"lm120\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><td data-compare-model=\"lm130\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Host device<\/div><\/td><td data-compare-model=\"lm150\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><td data-compare-model=\"lm160\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><\/tr><\/tbody><\/table>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--cool autool-section--downloads\" data-autool-surface=\"cool\" id=\"autool-download\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Manual &amp; Downloads<\/p>\r\n<h2 class=\"autool-title\">Use the Manual for Setup and Service<\/h2><\/header><div aria-label=\"AUTOOL LM100 manual download and setup support\" class=\"autool-resources-grid autool-product-rail autool-mobile-rail\" data-autool-rail=\"resources\">\r\n<article class=\"autool-resource-panel autool-resource-download\"><div class=\"autool-resource-media\"><img decoding=\"async\" alt=\"AUTOOL LM100 user manual preview\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/06\/Smart-Digital-Vaccum-Gauge18.png\"\/> <\/div>\r\n<div class=\"autool-resource-body\"><span class=\"autool-resource-meta\">Manual \/ PDF<\/span><h3>AUTOOL LM100 User Manual<\/h3><p>Open the PDF manual for LM100 vacuum measurement, unit selection, evacuation monitoring, LM130 data transfer, safe setup, maintenance, and troubleshooting.<\/p><div class=\"autool-resource-actions\"><a class=\"autool-product-button\" href=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/06\/AUTOOL-LM100-Manual-20250114.pdf\" rel=\"noopener\" target=\"_blank\">Download Manual<\/a><\/div><\/div><\/article><aside class=\"autool-resource-panel autool-section--support\" id=\"autool-support\"><div class=\"autool-resource-body\"><span class=\"autool-resource-meta\">Setup Help<\/span><h3>Need Help Choosing the Right Setup?<\/h3><p>Contact AUTOOL Store before ordering for help with manual versions, installation steps, compatibility, accessories, safe-use instructions, or after-sales support.<\/p><dl class=\"autool-support-list\"><div><dt>Email<\/dt><dd><a href=\"mailto:support@autoolstore.com\">support@autoolstore.com<\/a><\/dd><\/div><div><dt>WhatsApp<\/dt><dd><a href=\"https:\/\/wa.me\/8618926477404\" target=\"_blank\" rel=\"noopener\">+86 189 2647 7404<\/a><\/dd><\/div><\/dl><div class=\"autool-resource-actions\"><a class=\"autool-product-button\" href=\"mailto:support@autoolstore.com\">EMAIL<\/a><a class=\"autool-product-button\" href=\"https:\/\/wa.me\/8618926477404\" rel=\"noopener\" target=\"_blank\">WHATSAPP<\/a><\/div><\/div><\/aside>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--warm autool-section--package\" data-autool-surface=\"warm\" id=\"autool-box\"><div class=\"autool-layout-container\">\r\n<div class=\"autool-package-layout\">\r\n<figure class=\"autool-package-media\"><img decoding=\"async\" alt=\"AUTOOL LM100 packing list and package contents\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-lm100-packing-list-package-contents.jpg\"\/> <\/figure>\r\n<div class=\"autool-package-copy\"><p class=\"autool-subhead\">Package<\/p>\r\n<h2 class=\"autool-title\">What\u2019s Included<\/h2><ul aria-label=\"AUTOOL LM100 package contents\" class=\"autool-package-list autool-product-rail\" data-autool-rail=\"package\">\r\n<li>\r\n<span>LM100 Main Unit<\/span><strong>AUTOOL LM100 smart digital vacuum gauge.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>User Manual<\/span><strong>Printed documentation.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>Connection Cable<\/span><strong>Data\/connection cable.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>Brass Connector<\/span><strong>Brass valve connector.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>Yellow Short Hose<\/span><strong>Short yellow hose; confirm its rating and inclusion for the selected package.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>Retail Packaging<\/span><strong>Product box.<\/strong>\r\n<\/li>\r\n<\/ul><\/div>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--white autool-section--faq\" data-autool-nav=\"FAQ\" data-autool-surface=\"white\" id=\"autool-faq-description\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">FAQs<\/p>\r\n<h2 class=\"autool-title\">Vacuum Gauge Setup Questions<\/h2><\/header><div class=\"autool-faq-grid\">\r\n<details><summary>How does LM100 support an AC system vacuum test?<\/summary><div class=\"autool-faq-answer\"><p>LM100 is used for refrigeration, HVAC, and automotive A\/C system vacuum monitoring and pressure-retention testing. It helps users observe vacuum-level changes and evaluate refrigeration-system sealing condition.<\/p><\/div><\/details><details><summary>Does LM100 support refrigerant mode?<\/summary><div class=\"autool-faq-answer\"><p>No. LM100 is a smart digital vacuum gauge and pressure-retention test tool, not a complete refrigerant manifold gauge. It has no refrigerant database or high\/low manifold valves; compare LM120, LM150, or LM160 when those functions are required.<\/p><\/div><\/details><details><summary>Can it locate a leak?<\/summary><div class=\"autool-faq-answer\"><p>A pressure change directs the next inspection. Check the setup, then use an approved method to locate the leak.<\/p><\/div><\/details><details><summary>What units can LM100 switch between?<\/summary><div class=\"autool-faq-answer\"><p>LM100 supports one-button switching between hPa, mbar, Torr, inHg, \u00b0C, \u00b0F, and K.<\/p><\/div><\/details><details><summary>Can LM100 connect to LM130?<\/summary><div class=\"autool-faq-answer\"><p>Yes. LM100 has an integrated microprocessor and communication interface that connects to LM130 for synchronized high-precision data transmission.<\/p><\/div><\/details><details><summary>What pressure limit should I watch before testing?<\/summary><div class=\"autool-faq-answer\"><ul class=\"autool-feature-list\"><li>LM100 measuring range: -101 kPa to 6 MPa (approximately -1.01 to 60 bar).<\/li><li>LM100 measuring range: -101 kPa to 6 MPa; absolute limit: 10 MPa \/ 100 bar. The absolute limit is not an operating target.<\/li><li>Standard hose: 600 PSI \/ 4.13 MPa \/ 41.3 bar working pressure; 3000 PSI \/ 20.68 MPa \/ 206.8 bar limit.<\/li><\/ul>\r\n<p>Use the lowest working rating of the system, gauge, and hose.<\/p><\/div><\/details><details><summary>Does LM100 automatically power off?<\/summary><div class=\"autool-faq-answer\"><p>Yes. LM100 automatically powers off after 20 minutes of inactivity to save energy.<\/p><\/div><\/details><details><summary>What should I confirm before ordering?<\/summary><div class=\"autool-faq-answer\"><p>Confirm the required measurement range and units, hose\/connector rating, included accessories and whether you also need charging valves, refrigerant data or temperature probes.<\/p><\/div><\/details>\r\n<details><summary>What is the LM100 vacuum range?<\/summary><div class=\"autool-faq-answer\"><p>The vacuum range is 0\u20132000 mbar \/ 0\u20131500 Torr. Vacuum resolution is 0.1 hPa, 0.1 mbar, 0.1 Torr, or 0.01 inHg depending on the selected unit.<\/p><\/div><\/details><details><summary>What is included in the package?<\/summary><div class=\"autool-faq-answer\"><p>The package includes the LM100 main unit, product box, user manual, data\/connection cable, and brass valve connector. Confirm whether the selected package includes the yellow short hose or any additional accessories, and check the hose rating.<\/p><\/div><\/details><\/div>\r\n<\/div><\/section><\/main><\/div>\r\n\r\n","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>Evacuation &amp; Hold Checks:<\/strong> Follow vacuum changes during evacuation, then observe pressure after isolation to assess whether system sealing needs further investigation.<\/li>\n<li><strong>Vacuum Range &amp; Accuracy:<\/strong> Measure 0\u20132000 mbar \/ 0\u20131500 Torr with resolution down to 0.1 mbar and \u00b10.2% full-scale vacuum accuracy.<\/li>\n<li><strong>2.8-Inch, 0.5-Second Readout:<\/strong> The 2.8-inch backlit display responds in about 0.5 seconds and switches among seven vacuum or temperature units.<\/li>\n<li><strong>LM130 Data Link:<\/strong> Connects to the separate LM130 through its built-in communication interface for synchronized measurement data.<\/li>\n<\/ul>\n","protected":false},"featured_media":76590,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[448],"product_cat":[1072,1075],"product_tag":[952,940,939],"hf_cat_product":[4547],"class_list":["post-56963","product","type-product","status-publish","has-post-thumbnail","product_brand-autool","product_cat-automotive-repair-maintenance-equipment","product_cat-smart-digital-manifold-gauge","product_tag-a-c-refrigerant-service","product_tag-measurement-tools","product_tag-multi-warehouse-shipping","first","instock","shipping-taxable","purchasable","product-type-variable"],"meta_box":{"autool_archive_segment":"A\/C refrigerant service","autool_primary_use_case":"A\/C refrigerant recovery, manifold measurement or leak diagnosis","autool_customer_focus":["measurement accuracy","warehouse \/ delivery location"],"autool_source_summary":"- A\/C Service Ready: Designed for refrigerant recovery, manifold measurement, or leak-related A\/C service tasks in workshop use. - Decision Points Up Front: The short description is structured to surface practical buying","autool_model_family":"LM100","autool_voltage_options":"","autool_ship_from_options":"Germany\u3001United States\u3001United Kingdom\u3001China","autool_package_options":"","autool_accessory_options":"","autool_data_confidence":"site-content-derived","autool_manual_review_notes":""},"_links":{"self":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product\/56963","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/comments?post=56963"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/media\/76590"}],"wp:attachment":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/media?parent=56963"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_brand?post=56963"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_cat?post=56963"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_tag?post=56963"},{"taxonomy":"hf_cat_product","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/hf_cat_product?post=56963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}