{"id":37944,"date":"2023-05-24T15:59:57","date_gmt":"2023-05-24T07:59:57","guid":{"rendered":"https:\/\/autoolstore.com\/?post_type=product&#038;p=37944"},"modified":"2026-09-20T08:31:20","modified_gmt":"2026-09-20T16:31:20","slug":"autool-lm150-digital-manifold-gauges-digital-ac-gauges","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/product\/autool-lm150-digital-manifold-gauges-digital-ac-gauges\/","title":{"rendered":"AUTOOL LM150 Digital Manifold 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=\"lm150-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 LM150 \u00b7 93-Refrigerant AC Manifold Gauge with Dual Temperature<\/p>\r\n<h2 class=\"autool-product-hero__title\">Read Pressure and Dual Temperatures Together<\/h2>\r\n<p class=\"autool-product-hero__lead\">Measure 0\u20136 MPa high- and low-side pressure alongside two pipe temperatures using the included wired clamps. Select from 93 refrigerant profiles to calculate superheat\/subcooling, then monitor relative vacuum or timed pressure retention. V-shaped ball valves, a sight window and 1\/4-inch connections support charging, while the 3.5-inch backlit display and IP54 shell suit workshop handling.<\/p>\r\n<ul aria-label=\"AUTOOL LM150 key benefits\" class=\"autool-product-hero__capabilities\">\r\n<li>0\u20136 MPa Gauge Pressure<\/li>\r\n<li>93 Refrigerant Profiles<\/li>\r\n<li>2 Included Temperature Clamps<\/li>\r\n<li>Superheat \/ Subcooling<\/li>\r\n<li>3.5-Inch Backlit Display<\/li>\r\n<\/ul>\r\n<nav aria-label=\"AUTOOL LM150 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 LM150 digital manifold pressure tester for automotive AC and HVAC service\" decoding=\"async\" fetchpriority=\"high\" loading=\"eager\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-lm150-digital-manifold-pressure-tester-automotive-ac.jpg\"\/><\/figure>\r\n<\/div><\/section><aside aria-label=\"AUTOOL LM150 at a glance\" class=\"autool-product-metrics\"><div class=\"autool-product-metrics__inner\">\r\n<div class=\"autool-product-metric\">\r\n<strong>93<\/strong><span>Refrigerant Database<\/span>\r\n<\/div>\r\n<div class=\"autool-product-metric\">\r\n<strong>3.5 in<\/strong><span>Backlit LCD<\/span>\r\n<\/div>\r\n<div class=\"autool-product-metric\">\r\n<strong>-101\u20136000 kPa<\/strong><span>Gauge Pressure Coverage<\/span>\r\n<\/div>\r\n<div class=\"autool-product-metric\">\r\n<strong>4 \u00d7 AA<\/strong><span>Battery Power<\/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\">A 93-Refrigerant Library with Two Clamp Channels<\/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>Dual-Channel Gauge Pressure<\/h3>\r\n<p>Read high- and low-side pressure together within the stated range.<\/p><\/article><article class=\"autool-product-card\"><h3>Two Wired Temperature Clamps<\/h3><p>Use the two included wired T1\/T2 clamp probes for live pipe-temperature readings during evaporation and condensation checks. Maintain full contact with the refrigeration pipes for stable measurements.<\/p><\/article><article class=\"autool-product-card\"><h3>93-Refrigerant Database<\/h3><p>Select the known refrigerant from the 93-profile NIST-standard database to view its operating data during service.<\/p><\/article><article class=\"autool-product-card\"><h3>Superheat And Subcooling<\/h3>\r\n<p>Calculate SH\/SC from the selected refrigerant, pressure readings and stable T1\/T2 measurements.<\/p><\/article><article class=\"autool-product-card\"><h3>Vacuum Monitoring<\/h3>\r\n<p>Follow relative vacuum during system evacuation.<\/p><\/article><article class=\"autool-product-card\"><h3>Pressure-Retention Testing<\/h3><p>Record initial pressure, current pressure, pressure difference and elapsed time during a retention check to assess system tightness. Vacuum-pressure and vacuum-percentage readings support evacuation monitoring, while refrigerant filling assistance supports the system-specific charging procedure.<\/p><\/article><article class=\"autool-product-card\"><h3>Charging Assistance<\/h3>\r\n<p>Use valves, the refrigerant sight window and rated hoses during the approved system-specific charging sequence.<\/p><\/article><article class=\"autool-product-card\"><h3>3.5-Inch Backlit Display<\/h3><p>Measures high-pressure and low-pressure line pressure, high-pressure and low-pressure line temperature, evaporation temperature, and condensation temperature for clearer service decisions. View pressure, temperature, selected refrigerant and test status together.<\/p><\/article><article class=\"autool-product-card\"><h3>V-Shaped Ball Valves<\/h3><p>Control the high- and low-side flow paths directly with the V-shaped ball-valve design during compatible service steps.<\/p><\/article><article class=\"autool-product-card\"><h3>Portable Kit Hardware<\/h3>\r\n<p>Non-slip housing, foldable hook, standard connections, three-color hoses and hard case support transport and use.<\/p><\/article>\r\n<article class=\"autool-product-card\"><h3>IP54 Anti-Slip Housing<\/h3><p>The body uses high-strength engineering plastics and flexible anti-slip silicone. The shell is IP54-rated and designed for stable handling in workshop use.<\/p><\/article><article class=\"autool-product-card\"><h3>Durable Interface Design<\/h3><p>Long-life valve switches, refrigerant observation window, pressure release valve, and 1\/4-inch standard interfaces improve daily service usability.<\/p><\/article><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\">Connect, Select, Stabilize, and Compare Both Lines<\/h2><\/header><div class=\"autool-workflow\" data-autool-workflow=\"\" data-workflow-mode=\"panels\">\r\n<div aria-label=\"lm150 workflow\" class=\"autool-workflow__tabs\" data-workflow-tabs=\"\" role=\"tablist\">\r\n<button aria-controls=\"lm150-panel-0\" aria-selected=\"true\" class=\"autool-workflow__tab\" data-workflow-step=\"0\" id=\"lm150-tab-0\" role=\"tab\" tabindex=\"0\" type=\"button\">01<br\/><wbr\/>Identify<wbr\/> The<wbr\/> Refrigerant<\/button><button aria-controls=\"lm150-panel-1\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"1\" id=\"lm150-tab-1\" role=\"tab\" tabindex=\"-1\" type=\"button\">02<br\/><wbr\/>Check<wbr\/> Ratings<wbr\/> And<wbr\/> Hardware<\/button><button aria-controls=\"lm150-panel-2\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"2\" id=\"lm150-tab-2\" role=\"tab\" tabindex=\"-1\" type=\"button\">03<br\/><wbr\/>Power,<wbr\/> Zero<wbr\/> And<wbr\/> Connect<\/button><button aria-controls=\"lm150-panel-3\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"3\" id=\"lm150-tab-3\" role=\"tab\" tabindex=\"-1\" type=\"button\">04<br\/><wbr\/>Run<wbr\/> The<wbr\/> Selected<wbr\/> Mode<\/button><button aria-controls=\"lm150-panel-4\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"4\" id=\"lm150-tab-4\" role=\"tab\" tabindex=\"-1\" type=\"button\">05<br\/><wbr\/>Review<wbr\/> And<wbr\/> Disconnect<wbr\/> Safely<\/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=\"lm150-tab-0\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" id=\"lm150-panel-0\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">01<\/div>\r\n<h3 class=\"autool-workflow__title\">Identify The Refrigerant<\/h3>\r\n<p class=\"autool-workflow__description\">Confirm the exact refrigerant and service information before selecting one of the 93 profiles.<\/p><\/article><article aria-labelledby=\"lm150-tab-1\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm150-panel-1\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">02<\/div>\r\n<h3 class=\"autool-workflow__title\">Check Ratings And Hardware<\/h3>\r\n<p class=\"autool-workflow__description\">Inspect valve stems, nylon seals, fittings and hoses; compare system\/gauge\/hose working limits.<\/p><\/article><article aria-labelledby=\"lm150-tab-2\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm150-panel-2\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">03<\/div>\r\n<h3 class=\"autool-workflow__title\">Power, Zero And Connect<\/h3>\r\n<p class=\"autool-workflow__description\">Install four AA batteries, close valves, zero residual display if needed and connect the correct hose ends.<\/p><\/article><article aria-labelledby=\"lm150-tab-3\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm150-panel-3\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">04<\/div>\r\n<h3 class=\"autool-workflow__title\">Run The Selected Mode<\/h3>\r\n<p class=\"autool-workflow__description\">Use live pressure\/refrigerant, vacuum or retention mode; attach both clamps firmly for temperature and SH\/SC.<\/p><\/article><article aria-labelledby=\"lm150-tab-4\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm150-panel-4\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">05<\/div>\r\n<h3 class=\"autool-workflow__title\">Review And Disconnect Safely<\/h3>\r\n<p class=\"autool-workflow__description\">Compare results with the service procedure, close valves, reduce high-side pressure to a safe point and disconnect in the prescribed order.<\/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>Interpret LM150 readings as gauge pressure and stay within -101 kPa to 6 MPa measurement coverage.<\/li>\r\n<li>Standard hoses are listed for 600 PSI working pressure; 3000 PSI is a burst value, not a service target.<\/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\">Verify Refrigerant, Couplers, Hoses, and Pressure<\/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>Gauge Pressure Only<\/h3>\r\n<p>Interpret LM150 readings as gauge pressure and stay within -101 kPa to 6 MPa measurement coverage.<\/p><\/article><article class=\"autool-product-card\"><h3>Hose Rating Can Govern<\/h3>\r\n<p>Standard hoses are listed for 600 PSI working pressure; 3000 PSI is a burst value, not a service target.<\/p><\/article><article class=\"autool-product-card\"><h3>Check Hose Ends And Seals<\/h3>\r\n<p>Incorrect core orientation or worn nylon pads can prevent filling or cause leakage.<\/p><\/article><article class=\"autool-product-card\"><h3>Use PPE And Ventilation<\/h3>\r\n<p>Wear appropriate protection, ventilate the area and avoid hazardous heat, humidity, ignition and electromagnetic conditions.<\/p><\/article><article class=\"autool-product-card\"><h3>Use Known Refrigerant Data<\/h3>\r\n<p>Select the known refrigerant before interpreting readings or charging.<\/p><\/article>\r\n<article class=\"autool-product-card\"><h3>Restricted Operating Environments<\/h3><p>Do not use or store the device in high temperature, high humidity, flammable, explosive, or strong electromagnetic field environments.<\/p><\/article><article class=\"autool-product-card\"><h3>No Circuit Modifications<\/h3><p>Do not modify the internal circuit. Unauthorized modification may damage the instrument or create hazards.<\/p><\/article><article class=\"autool-product-card\"><h3>Inspect Service Connections<\/h3><p>Inspect pipe fittings, hoses, hose terminals, and valve stems before testing. Replace damaged parts before use.<\/p><\/article><article class=\"autool-product-card\"><h3>Release Pressure Before Disconnecting<\/h3><p>Do not remove the high-pressure valve connection until the pressure drops to a safe point.<\/p><\/article><article class=\"autool-product-card\"><h3>Follow System Charging Procedures<\/h3><p>Different equipment and refrigerants may require different filling procedures. Follow the refrigeration system service requirements before charging.<\/p><\/article><article class=\"autool-product-card\"><h3>Maximum Device Pressure<\/h3><p>The maximum device pressure \/ overload limit is 10 MPa \/ 100 bar. This is not the normal measuring range and does not permit exceeding the rated pressure of the tested system.<\/p><\/article><\/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\">Interpret Pressure, Temperature, SH, and SC<\/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>Read Pressure and Temperature Together<\/h3>\r\n<p>Interpret high- and low-side pressure together with T1\/T2 temperature values, the known refrigerant, and operating condition.<\/p><\/article><article class=\"autool-product-card\"><h3>SH\/SC Validity<\/h3>\r\n<p>Requires correct refrigerant selection and stable full clamp contact.<\/p><\/article><article class=\"autool-product-card\"><h3>Retention Change<\/h3>\r\n<p>Recheck hoses, pads, fittings and valve stems before moving to a separate leak-location procedure.<\/p><\/article><article class=\"autool-product-card\"><h3>Post-Service Readings<\/h3>\r\n<p>Abnormal pressure or cooling can require additional electrical, mechanical, airflow or leak diagnosis.<\/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\">Compare Refrigerant Libraries and Inputs<\/h2><\/header><div class=\"autool-model-compare\" data-autool-model-compare=\"\" data-current-model=\"lm150\">\r\n<button aria-controls=\"compare46-01_lm150-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: LM150<\/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_lm150-compare-picker-title\" class=\"autool-model-compare__selector\" id=\"compare46-01_lm150-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_lm150-compare-picker-title\">Model Guide<\/h3>\r\n<p class=\"autool-model-compare__instruction\">Choose one or more models. LM150 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\" data-model-card=\"lm120-plus\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"lm120-plus\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">LM120+<\/strong><span class=\"autool-model-option__tier\">Plus-kit manifold \/ Clamp support<\/span><\/span><\/label><label class=\"autool-model-option autool-is-selected\" data-model-card=\"lm150\" role=\"listitem\"><input checked=\"\" 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><span class=\"autool-model-option__current\">Current model<\/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_lm150-compare-result-status\" role=\"status\">LM150 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_lm150-compare-result-title\">LM150 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_lm150-compare-result-status\" aria-labelledby=\"compare46-01_lm150-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=\"lm120-plus\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"lm150\"\/><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=\"lm120-plus\" hidden=\"\" scope=\"col\">LM120+<\/th><th data-compare-model=\"lm150\" 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\">Refrigerant profiles<\/th><td data-compare-model=\"lm120-plus\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Shared manual lists 89; confirm version<\/div><\/td><td data-compare-model=\"lm150\"><div class=\"autool-compare-matrix__value\">93<\/div><\/td><td data-compare-model=\"lm160\" hidden=\"\"><div class=\"autool-compare-matrix__value\">95<\/div><\/td><\/tr><tr data-compare-group=\"comparison-group-1\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Program-controlled menu<\/th><td data-compare-model=\"lm120-plus\" hidden=\"\"><div class=\"autool-compare-matrix__value\">No verified support<\/div><\/td><td data-compare-model=\"lm150\"><div class=\"autool-compare-matrix__value\">No verified support<\/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\">Wired clamps in package<\/th><td data-compare-model=\"lm120-plus\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Compatible clamps not included in this configuration<\/div><\/td><td data-compare-model=\"lm150\"><div class=\"autool-compare-matrix__value\">Two shown<\/div><\/td><td data-compare-model=\"lm160\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Two shown<\/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 LM150 manual download and setup support\" class=\"autool-product-rail autool-resources-grid autool-mobile-rail\" data-autool-rail=\"support\">\r\n<article class=\"autool-resource-download autool-resource-panel\"><div class=\"autool-resource-media\"><img loading=\"lazy\" alt=\"AUTOOL LM150 user manual cover\" decoding=\"async\" height=\"300\" loading=\"lazy\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/03\/autool-lm150-user-manual-pdf.jpg\" width=\"212\"\/> <\/div><div class=\"autool-resource-body\"><span class=\"autool-resource-meta\">Manual \/ PDF<\/span><h3>AUTOOL LM150 User Manual<\/h3><p>Open the PDF manual for LM150 pressure and temperature measurement, refrigerant selection, superheat and subcooling, vacuum and charging procedures, safety, and troubleshooting.<\/p><div class=\"autool-resource-actions\"><a class=\"autool-product-button\" href=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/03\/autool-lm150-user-manual.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 LM150 packing list with main unit storage case hoses adapters manual retail box and two temperature clamp probes\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2023\/05\/AUTOOL-LM150-14.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 LM150 package contents\" class=\"autool-package-list autool-product-rail\" data-autool-rail=\"package\">\r\n<li>\r\n<span>LM150 Main Unit<\/span><strong>Digital manifold pressure tester.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>Hard Storage Case<\/span><strong>Protective carrying case.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>Three-Color Hose Set<\/span><strong>Red, blue and yellow service hoses; confirm rating for the application.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>Two Wired Temperature Clamps<\/span><strong>T1\/T2 clip-on pipe probes.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>Adapters And Brass Connector<\/span><strong>Small adapters\/connector; confirm the exact selected-kit pieces.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>Manual And Retail Box<\/span><strong>Documentation and packaging.<\/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\">Refrigerant Library and Clamp Questions<\/h2><\/header><div class=\"autool-faq-grid\">\r\n<details><summary>What Is AUTOOL LM150 Used For?<\/summary><div class=\"autool-faq-answer\"><p>LM150 is a digital manifold pressure tester for HVAC installation, refrigeration equipment testing and maintenance, automotive A\/C service, air conditioners, and cold storage systems. It supports dual pressure testing, dual temperature testing, refrigerant service, vacuum measurement, and pressure leak testing.<\/p><ul class=\"autool-feature-list\"><li>High\/low gauge pressure, relative vacuum and two pipe temperatures; it also supports timed retention and selected-refrigerant calculations.<\/li><\/ul><\/div><\/details><details><summary>How many refrigerants are stored?<\/summary><div class=\"autool-faq-answer\"><p>LM150 lists 93 refrigerants in its NIST-standard reference database.<\/p><\/div><\/details><details><summary>Are Temperature Clamps Included?<\/summary><div class=\"autool-faq-answer\"><p>Yes. LM150 includes two wired clip-on temperature probes. Connect them to the T1 and T2 sockets with full pipe contact for real-time temperature readings.<\/p><\/div><\/details><details><summary>Does LM150 identify refrigerant?<\/summary><div class=\"autool-faq-answer\"><p>No. Select only refrigerant already confirmed from vehicle\/equipment information.<\/p><\/div><\/details><details><summary>Can it locate a leak?<\/summary><div class=\"autool-faq-answer\"><p>No. Pressure change can flag a problem; use an approved separate method to locate it.<\/p><\/div><\/details><details><summary>Why Might Refrigerant Filling Fail?<\/summary><div class=\"autool-faq-answer\"><p>The refrigeration system inlet has a valve core. When connecting hoses, pay attention to both hose terminals: connect the terminal with a core to the refrigeration system and the terminal without a core to the instrument.<\/p><ul class=\"autool-feature-list\"><li>Check hose-end valve-core orientation, then inspect seals, fittings and valves and follow the connection procedure.<\/li><\/ul><\/div><\/details><details><summary>What Is The Standard Hose Pressure Limit?<\/summary><div class=\"autool-faq-answer\"><p>The maximum working pressure of the standard hose is 600PSI, approximately 4.13MPa \/ 41.3bar. The hose burst pressure is 3000PSI, approximately 20.68MPa \/ 206.8bar. If the included hose does not meet your pressure requirement, use a suitable replacement hose.<\/p><ul class=\"autool-feature-list\"><li>Use the lowest system, gauge and hose working rating. Do not treat the 100 bar instrument limit or 3000 PSI hose burst value as normal operation.<\/li><\/ul><\/div><\/details><details><summary>What powers it?<\/summary><div class=\"autool-faq-answer\"><p>Four 1.5 V AA\/LR6 batteries.<\/p><\/div><\/details><details><summary>How does it differ from LM160?<\/summary><div class=\"autool-faq-answer\"><p>LM150 provides the core 93-refrigerant dual-clamp manifold workflow; LM160 adds program control, eight languages and a 95-refrigerant database.<\/p><\/div><\/details>\r\n<details><summary>Is The Pressure Reading Gauge Pressure Or Absolute Pressure?<\/summary><div class=\"autool-faq-answer\"><p>The LM150 pressure reading is gauge pressure. Confirm whether the system procedure requires gauge pressure or another pressure reference before interpreting test data.<\/p><\/div><\/details><details><summary>What Is The LM150 Pressure Test Range?<\/summary><div class=\"autool-faq-answer\"><p>The overall pressure and vacuum coverage is -101 kPa to 6 MPa, approximately -1.01 bar to 60 bar. The pressure test range is 0 kPa to 6000 kPa, and the vacuum test range is -101 kPa to 0 kPa. Do not use it beyond the measuring range of the instrument.<\/p><\/div><\/details><details><summary>How Many Refrigerants Does LM150 Support?<\/summary><div class=\"autool-faq-answer\"><p>LM150 includes a built-in 93-refrigerant NIST-standard database. Confirm that your required refrigerant is included before ordering.<\/p><\/div><\/details><details><summary>What Power Supply Does LM150 Need?<\/summary><div class=\"autool-faq-answer\"><p>LM150 uses 4 \u00d7 1.5V AA \/ LR6 batteries. If the low-power sign appears, replace the batteries as required to avoid affecting normal use.<\/p><\/div><\/details><details><summary>What Should I Check Before Testing?<\/summary><div class=\"autool-faq-answer\"><p>Check the rated pressure of the tested equipment, confirm that the system does not exceed the instrument range, inspect pipe fittings and hoses, replace damaged parts immediately, wear approved protective equipment, and work in a well-ventilated area.<\/p><\/div><\/details><details><summary>What Are Common Leak Points To Check?<\/summary><div class=\"autool-faq-answer\"><p>Check hose terminals, nylon pads, pipe fittings, hoses, valve stems, and refrigeration system pipes and connectors. Hose terminal nylon pads have a limited service life, and overuse or damage may cause leakage. Tighten the copper plug screw on the middle refrigerant inlet before or after operation as required.<\/p><\/div><\/details><details><summary>What Is The Difference Between LM150 And LM160?<\/summary><div class=\"autool-faq-answer\"><p>LM150 supports vacuuming mode, refrigerant mode, pressure leak testing, 93 refrigerants, high\/low pressure valves, two wired temperature clamps, a foldable hook, and a refrigerant sight window. LM160 adds program control, 8 interface languages, a 95-refrigerant database, and two-side handrails; choose it when those functions are required.<\/p><\/div><\/details><details><summary>How Long Is The Warranty?<\/summary><div class=\"autool-faq-answer\"><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><\/div><\/details><\/div>\r\n<\/div><\/section><\/main><\/div>\r\n\r\n","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>Dual Pressure + Included Clamps:<\/strong> Read both pressure sides and two pipe temperatures; the kit includes two wired clip-on probes.<\/li>\n<li><strong>93-Refrigerant Database:<\/strong> Select from 93 built-in NIST-standard refrigerants to reference operating data during service.<\/li>\n<li><strong>Superheat &amp; Subcooling:<\/strong> Calculate SH\/SC from the selected refrigerant, pressure readings, and stable T1\/T2 measurements.<\/li>\n<li><strong>Vacuum, Hold + Charge Modes:<\/strong> Supports relative-vacuum monitoring, timed pressure-retention testing, and refrigerant-charging assistance.<\/li>\n<li><strong>Direct Ball-Valve Control:<\/strong> V-shaped high- and low-side ball valves provide direct flow-path control.<\/li>\n<\/ul>\n","protected":false},"featured_media":55100,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[448],"product_cat":[1072,1075],"product_tag":[952,1037,940,939,1038],"hf_cat_product":[4547],"class_list":["post-37944","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-best-seller","product_tag-measurement-tools","product_tag-multi-warehouse-shipping","product_tag-new-arrival","product_shipping_class-weight","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":"LM150","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\/37944","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=37944"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/media\/55100"}],"wp:attachment":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/media?parent=37944"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_brand?post=37944"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_cat?post=37944"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_tag?post=37944"},{"taxonomy":"hf_cat_product","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/hf_cat_product?post=37944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}