{"id":41592,"date":"2024-02-22T16:05:07","date_gmt":"2024-02-22T08:05:07","guid":{"rendered":"https:\/\/autoolstore.com\/?post_type=product&#038;p=41592"},"modified":"2026-09-20T08:32:25","modified_gmt":"2026-09-20T16:32:25","slug":"autool-lm55-temp-clamp-hvac-temp-clamp","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/product\/autool-lm55-temp-clamp-hvac-temp-clamp\/","title":{"rendered":"AUTOOL LM55 Pipe Clamp Temperature Meter with Waveform Recording"},"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=\"lm55-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 LM55 \u00b7 Pipe-Clamp Thermometer with Trend Recording<\/p>\r\n<h2 class=\"autool-product-hero__title\">See Pipe Temperature Change as It Happens<\/h2>\r\n<p class=\"autool-product-hero__lead\">Clamp onto pipes under 40 mm in diameter to follow live temperature readings and heating or cooling curves during HVAC, refrigeration and automotive A\/C work. Save up to eight waveform sets of up to 150 seconds each and pause recording for review. The compact color display offers adjustable brightness, \u00b0C\/\u00b0F units and Chinese\/English operation, powered by three AAA batteries.<\/p>\r\n<ul aria-label=\"AUTOOL LM55 key benefits\" class=\"autool-product-hero__capabilities\">\r\n<li>Pipes Under 40 mm<\/li>\r\n<li>Live Temperature Curves<\/li>\r\n<li>8 \u00d7 150-Second Waveform Sets<\/li>\r\n<li>Pause for Reading Review<\/li>\r\n<li>Adjustable Color Display<\/li>\r\n<\/ul>\r\n<nav aria-label=\"AUTOOL LM55 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 LM55 digital pipe clamp temperature meter product image\" decoding=\"async\" fetchpriority=\"high\" loading=\"eager\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/08\/LM55.jpg\"\/><\/figure>\r\n<\/div><\/section><aside aria-label=\"AUTOOL LM55 at a glance\" class=\"autool-product-metrics\"><div class=\"autool-product-metrics__inner\">\r\n<div class=\"autool-product-metric\">\r\n<strong>&lt;40 mm<\/strong><span>Applicable Pipe Diameter<\/span>\r\n<\/div>\r\n<div class=\"autool-product-metric\">\r\n<strong>8<\/strong><span>Stored Waveforms<\/span>\r\n<\/div>\r\n<div class=\"autool-product-metric\">\r\n<strong>150 s<\/strong><span>Maximum Per Record<\/span>\r\n<\/div>\r\n<div class=\"autool-product-metric\">\r\n<strong>3 \u00d7 AAA<\/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\">Live Temperature Waveform with Eight Saved Readings<\/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>Live Numerical Reading<\/h3>\r\n<p>Read current pipe temperature directly after the clamp has stable contact.<\/p><\/article><article class=\"autool-product-card\"><h3>Real-Time Waveform<\/h3><p>Follow heating or cooling direction on a real-time temperature\/time curve.<\/p><\/article><article class=\"autool-product-card\"><h3>Eight Saved Records<\/h3><p>LM55 stores and browses eight waveform sets of up to 150 seconds each; recording stops with an alert when storage is full.<\/p><\/article><article class=\"autool-product-card\"><h3>Pause And Resume<\/h3>\r\n<p>Use Enter to pause and resume a live waveform recording.<\/p><\/article><article class=\"autool-product-card\"><h3>Under-40 mm Clamp<\/h3><p>The clamp is designed for pipe temperature measurement and supports applicable pipe diameters under 40mm. Measure suitable pipes smaller than 40 mm without forcing the jaws onto an oversized or irregular surface.<\/p><\/article><article class=\"autool-product-card\"><h3>Color TFT Display<\/h3><p>The 0.96-inch, 80 RGB \u00d7 160-dot TFT-LCD shows live temperature, waveforms, saved records, and settings.<\/p><\/article><article class=\"autool-product-card\"><h3>Adjustable Brightness<\/h3><p>Adjust backlight brightness from 0 to 100 to keep the screen readable in different service environments.<\/p><\/article><article class=\"autool-product-card\"><h3>Selectable Units And Language<\/h3><p>The system supports Chinese and English language options for different users and service environments. Switch between \u00b0C\/\u00b0F and Chinese\/English menus.<\/p><\/article><article class=\"autool-product-card\"><h3>Portable Battery Power<\/h3>\r\n<p>Runs on three AAA batteries in a PA6-GF45 housing.<\/p><\/article>\r\n<article class=\"autool-product-card\"><h3>Product Dimensions<\/h3><p>The LM55 measures 178 \u00d7 100 mm.<\/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\">Clamp, Stabilize, Compare, and Save<\/h2><\/header><div class=\"autool-workflow\" data-autool-workflow=\"\" data-workflow-mode=\"panels\">\r\n<div aria-label=\"lm55 workflow\" class=\"autool-workflow__tabs\" data-workflow-tabs=\"\" role=\"tablist\">\r\n<button aria-controls=\"lm55-panel-0\" aria-selected=\"true\" class=\"autool-workflow__tab\" data-workflow-step=\"0\" id=\"lm55-tab-0\" role=\"tab\" tabindex=\"0\" type=\"button\">01<br\/><wbr\/>Confirm<wbr\/> Pipe<wbr\/> And<wbr\/> Temperature<\/button><button aria-controls=\"lm55-panel-1\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"1\" id=\"lm55-tab-1\" role=\"tab\" tabindex=\"-1\" type=\"button\">02<br\/><wbr\/>Install<wbr\/> Batteries<wbr\/> And<wbr\/> Power<wbr\/> On<\/button><button aria-controls=\"lm55-panel-2\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"2\" id=\"lm55-tab-2\" role=\"tab\" tabindex=\"-1\" type=\"button\">03<br\/><wbr\/>Clamp<wbr\/> With<wbr\/> Full<wbr\/> Contact<\/button><button aria-controls=\"lm55-panel-3\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"3\" id=\"lm55-tab-3\" role=\"tab\" tabindex=\"-1\" type=\"button\">04<br\/><wbr\/>Choose<wbr\/> Live<wbr\/> Or<wbr\/> Waveform<wbr\/> View<\/button><button aria-controls=\"lm55-panel-4\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"4\" id=\"lm55-tab-4\" role=\"tab\" tabindex=\"-1\" type=\"button\">05<br\/><wbr\/>Save<wbr\/> And<wbr\/> Compare<\/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=\"lm55-tab-0\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" id=\"lm55-panel-0\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">01<\/div>\r\n<h3 class=\"autool-workflow__title\">Confirm Pipe And Temperature<\/h3>\r\n<p class=\"autool-workflow__description\">Choose a clean, stable pipe under 40 mm and avoid unsafe high-temperature points.<\/p><\/article><article aria-labelledby=\"lm55-tab-1\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm55-panel-1\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">02<\/div>\r\n<h3 class=\"autool-workflow__title\">Install Batteries And Power On<\/h3>\r\n<p class=\"autool-workflow__description\">Insert three AAA batteries correctly and hold Enter for about two seconds.<\/p><\/article><article aria-labelledby=\"lm55-tab-2\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm55-panel-2\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">03<\/div>\r\n<h3 class=\"autool-workflow__title\">Clamp With Full Contact<\/h3>\r\n<p class=\"autool-workflow__description\">Seat the sensor firmly without forcing the jaw or using an unstable\/irregular surface.<\/p><\/article><article aria-labelledby=\"lm55-tab-3\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm55-panel-3\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">04<\/div>\r\n<h3 class=\"autool-workflow__title\">Choose Live Or Waveform View<\/h3>\r\n<p class=\"autool-workflow__description\">Read the current value or monitor the temperature\/time curve; pause\/resume if needed.<\/p><\/article><article aria-labelledby=\"lm55-tab-4\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"lm55-panel-4\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">05<\/div>\r\n<h3 class=\"autool-workflow__title\">Save And Compare<\/h3>\r\n<p class=\"autool-workflow__description\">Review stored records under comparable conditions and use other measurements for complete diagnosis.<\/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>The body contains a -50\u00b0C to 260\u00b0C instrument range but also warns against high-temperature points and says routine use should remain below 150\u00b0C; do not market 260\u00b0C as a safe application limit.<\/li>\r\n<li>Use only on suitable pipes under 40 mm.<\/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\">Keep Sensors on Suitable Clean Pipe Surfaces<\/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>Use The Conservative Temperature Boundary<\/h3>\r\n<p>The body contains a -50\u00b0C to 260\u00b0C instrument range but also warns against high-temperature points and says routine use should remain below 150\u00b0C; do not market 260\u00b0C as a safe application limit.<\/p><\/article><article class=\"autool-product-card\"><h3>Do Not Force The Clamp<\/h3>\r\n<p>Use only on suitable pipes under 40 mm.<\/p><\/article><article class=\"autool-product-card\"><h3>Keep Contact Stable<\/h3>\r\n<p>A dirty, loose or irregular surface can reduce reading consistency.<\/p><\/article><article class=\"autool-product-card\"><h3>Store Dry<\/h3>\r\n<p>Avoid hot, humid, corrosive and poorly ventilated storage; protect the housing from rough surfaces.<\/p><\/article><article class=\"autool-product-card\"><h3>Track Pipe-Temperature Trends<\/h3>\r\n<p>Use pipe-temperature trends to compare A\/C system behavior under consistent operating conditions, together with the specified pressure and service checks.<\/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\">Use Pipe Temperature Trends and Stability to Support A\/C Diagnosis<\/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>Stable Value<\/h3>\r\n<p>Supports a repeatable pipe-temperature observation for the same contact point and condition.<\/p><\/article><article class=\"autool-product-card\"><h3>Rising Or Falling Curve<\/h3>\r\n<p>Shows direction and rate of local temperature change, which can be compared with a controlled system event.<\/p><\/article><article class=\"autool-product-card\"><h3>Sudden Jump<\/h3>\r\n<p>First check clamp contact, pipe surface and movement before attributing the change to the system.<\/p><\/article><article class=\"autool-product-card\"><h3>Before\/After Comparison<\/h3>\r\n<p>Use the same pipe location, contact and operating condition; combine with pressure, airflow and equipment data for 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\">Choose a Temperature or Manifold Tool<\/h2><\/header><div class=\"autool-model-compare\" data-autool-model-compare=\"\" data-current-model=\"lm55\">\r\n<button aria-controls=\"compare46-01_lm55-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: LM55<\/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_lm55-compare-picker-title\" class=\"autool-model-compare__selector\" id=\"compare46-01_lm55-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_lm55-compare-picker-title\">Model Guide<\/h3>\r\n<p class=\"autool-model-compare__instruction\">Choose one or more models. LM55 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=\"lm55\" role=\"listitem\"><input checked=\"\" data-model-checkbox=\"\" type=\"checkbox\" value=\"lm55\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">LM55<\/strong><span class=\"autool-model-option__tier\">Single-pipe temperature \/ No pressure reading<\/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-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><\/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_lm55-compare-result-status\" role=\"status\">LM55 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_lm55-compare-result-title\">LM55 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_lm55-compare-result-status\" aria-labelledby=\"compare46-01_lm55-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=\"lm55\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"lm70\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"lm120-plus\" hidden=\"\"\/><\/colgroup><thead><tr><th scope=\"col\">Choose For Your Task<\/th><th data-compare-model=\"lm55\" scope=\"col\">LM55<\/th><th data-compare-model=\"lm70\" hidden=\"\" scope=\"col\">LM70<\/th><th data-compare-model=\"lm120-plus\" hidden=\"\" scope=\"col\">LM120+<\/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=\"lm55\"><div class=\"autool-compare-matrix__value\">Single-pipe temperature trend<\/div><\/td><td data-compare-model=\"lm70\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Dual-pressure manifold with two pipe temperatures<\/div><\/td><td data-compare-model=\"lm120-plus\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Manifold workflow with optional\/required clamp support<\/div><\/td><\/tr><tr data-compare-group=\"comparison-group-1\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Pressure measurement<\/th><td data-compare-model=\"lm55\"><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-plus\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Yes<\/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 LM55 manual download and setup support\" class=\"autool-product-rail autool-resources-grid autool-mobile-rail\" data-autool-rail=\"resources\">\r\n<article class=\"autool-resource-download autool-resource-panel\"><div class=\"autool-resource-media\"><img loading=\"lazy\" alt=\"AUTOOL LM55 user manual cover\" decoding=\"async\" height=\"300\" loading=\"lazy\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/03\/autool-lm55-user-manual-pdf.jpg\" width=\"212\"\/> <\/div><div class=\"autool-resource-body\"><span class=\"autool-resource-meta\">Manual \/ PDF<\/span><h3>AUTOOL LM55 User Manual<\/h3><p>Open the PDF manual for LM55 pipe-temperature measurement, waveform recording, saved records, clamp placement, safe battery use, maintenance, and troubleshooting.<\/p><div class=\"autool-resource-actions\"><a class=\"autool-product-button\" href=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/03\/autool-lm55-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 alt=\"AUTOOL LM55 package contents\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/02\/autool-obd2-extension-cable-5.jpg\"\/><\/figure><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 LM55 package contents\" class=\"autool-package-list autool-product-rail\" data-autool-rail=\"package\">\r\n<li>\r\n<span>LM55 Main Unit<\/span><strong>Digital pipe-clamp temperature meter.<\/strong>\r\n<\/li>\r\n<li>\r\n<span>Included Documentation And Packaging<\/span><strong>Confirm the exact supplied documentation, packaging and any accessories for the selected order.<\/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\">Clamp Placement and Trend Questions<\/h2><\/header><div class=\"autool-faq-grid\">\r\n<details><summary>What Is AUTOOL LM55 Used For?<\/summary><div class=\"autool-faq-answer\"><p>AUTOOL LM55 is a digital pipe-clamp thermometer for HVAC, refrigeration, and automotive A\/C work that shows local pipe temperature as a live number and real-time curve and stores waveform records for later review.<\/p><\/div><\/details><details><summary>What pipe size fits?<\/summary><div class=\"autool-faq-answer\"><p>Suitable pipes under 40 mm diameter.<\/p><\/div><\/details><details><summary>How many records can it store?<\/summary><div class=\"autool-faq-answer\"><p>Eight waveform records of up to 150 seconds each.<\/p><\/div><\/details><details><summary>Can it diagnose an A\/C fault by itself?<\/summary><div class=\"autool-faq-answer\"><p>No. Combine its pipe trend with pressure, airflow and equipment-specific information.<\/p><\/div><\/details><details><summary>Can it be used to 260\u00b0C?<\/summary><div class=\"autool-faq-answer\"><p>The instrument span extends to 260\u00b0C, but routine use is recommended below 150\u00b0C and high-temperature points should be avoided. Follow the manual&#8217;s conservative limit.<\/p><\/div><\/details><details><summary>Can I Switch Between Celsius And Fahrenheit?<\/summary><div class=\"autool-faq-answer\"><p>Yes. LM55 supports \u2103 and \u2109 unit switching. Enter the setup interface, select the unit option, choose the desired unit, and save the setting.<\/p><ul class=\"autool-feature-list\"><li>Yes, between Celsius and Fahrenheit.<\/li><\/ul><\/div><\/details><details><summary>What powers it?<\/summary><div class=\"autool-faq-answer\"><p>Three AAA batteries.<\/p><\/div><\/details><details><summary>What should I check if a curve jumps?<\/summary><div class=\"autool-faq-answer\"><p>Check contact, pipe surface and movement before interpreting it as a system change.<\/p><\/div><\/details>\r\n<details><summary>How Do I Maintain Reliable Clamp Contact?<\/summary><div class=\"autool-faq-answer\"><p>Use the clamp only on suitable pipes under 40 mm. Do not force it onto oversized or irregular surfaces; stable contact is required for reliable readings.<\/p><\/div><\/details><details><summary>Can LM55 Be Used On High-Temperature Points?<\/summary><div class=\"autool-faq-answer\"><p>No. Avoid unsafe high-temperature points. Keep routine pipe measurements below 150\u00b0C unless the manual or AUTOOL support confirms the application.<\/p><\/div><\/details><details><summary>Why Does The Specs Table Mention A Manual Measurement Range?<\/summary><div class=\"autool-faq-answer\"><p>The user manual lists an instrument measurement range of -50\u00b0C to 260\u00b0C. The operating guidance also says not to clamp unsafe high-temperature points and to keep routine pipe testing below 150\u00b0C. Treat the wider instrument range as a specification, not permission for every hot-surface application.<\/p><\/div><\/details><details><summary>Does LM55 Support Waveform And History Data?<\/summary><div class=\"autool-faq-answer\"><p>Yes. LM55 can display a real-time temperature\/time waveform and store 8 sets of waveform data. Each set records up to 150 seconds, and historical waveform records can be browsed later.<\/p><\/div><\/details><details><summary>What Batteries Does LM55 Use?<\/summary><div class=\"autool-faq-answer\"><p>LM55 uses a 4.5V power supply from 3 \u00d7 AAA batteries. Install the batteries correctly before powering on the device.<\/p><\/div><\/details><details><summary>Can The Screen Brightness Be Adjusted?<\/summary><div class=\"autool-faq-answer\"><p>Yes. The LM55 screen brightness can be adjusted from 0 to 100 in the setup interface. This helps improve readability in different workshop environments.<\/p><\/div><\/details><details><summary>Is There An LM55 Manual?<\/summary><div class=\"autool-faq-answer\"><p>Yes. The AUTOOL LM55 user manual is available as a PDF in the Manual section above. It covers specifications, functions, operation, buttons, display, maintenance, warranty, and return service information.<\/p><\/div><\/details><details><summary>What Is The Warranty For LM55?<\/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><details><summary>How Should LM55 Be Stored And Maintained?<\/summary><div class=\"autool-faq-answer\"><p>Keep the product away from rough surfaces, regularly check tightened and connected parts, avoid corrosive liquids, and store it in a dry place. Do not store it in hot, humid, or non-ventilated environments.<\/p><\/div><\/details><details><summary>Which Related AUTOOL Tools Are Listed In Quick Search?<\/summary><div class=\"autool-faq-answer\"><p>The Quick Search section lists LM55 and related AUTOOL HVAC or A\/C service tools, including LM120, LM120+, LM150, and LM160. These products are related service tools, not direct LM55 function variants.<\/p><\/div><\/details><\/div>\r\n<\/div><\/section><\/main><\/div>\r\n\r\n","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>Live Temperature Trends:<\/strong> View current pipe temperature as a live number and follow heating or cooling direction on a real-time curve.<\/li>\n<li><strong>Eight Saved Waveforms:<\/strong> Store and review eight waveform sets of up to 150 seconds each.<\/li>\n<li><strong>Under-40 mm Clamp:<\/strong> Clamp onto pipes under 40 mm in diameter for contact temperature measurements.<\/li>\n<li><strong>0.96-Inch Bilingual Display:<\/strong> Use the 0.96-inch color TFT with adjustable brightness, Celsius\/Fahrenheit switching, bilingual menus, and three-AAA battery power.<\/li>\n<\/ul>\n","protected":false},"featured_media":55097,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[448],"product_cat":[1072,1075],"product_tag":[952,1037,939],"hf_cat_product":[4547],"class_list":["post-41592","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-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":"LM55","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\/41592","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=41592"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/media\/55097"}],"wp:attachment":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/media?parent=41592"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_brand?post=41592"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_cat?post=41592"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_tag?post=41592"},{"taxonomy":"hf_cat_product","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/hf_cat_product?post=41592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}