{"id":4604,"date":"2026-07-23T09:24:25","date_gmt":"2026-07-23T01:24:25","guid":{"rendered":"https:\/\/www.corvelanmag.com\/?post_type=product&#038;p=4604"},"modified":"2026-09-27T18:23:46","modified_gmt":"2026-09-27T10:23:46","slug":"gjt-f-metal-detector","status":"publish","type":"product","link":"https:\/\/www.corvelanmag.com\/fr\/products\/gjt-f-metal-detector\/","title":{"rendered":"D\u00e9tecteur de m\u00e9taux GJT-F pour convoyeurs \u00e0 bande"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"4604\" class=\"elementor elementor-4604\" data-elementor-post-type=\"product\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b8d553e e-con e-atomic-element e-div-block-base e-default-div e-b8d553e-3db4048 \" data-id=\"b8d553e\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"b8d553e\" data-e-type=\"e-div-block\" data-id=\"b8d553e\">\n    \t\t<div class=\"elementor-element elementor-element-f27822f 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.cl-proof-note{font-size:13px;color:var(--cl-muted);margin-top:16px;border-left:3px solid var(--cl-blue2);padding-left:12px}\r\n.coverlan-pdp .cl-fact-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:22px 0}\r\n.coverlan-pdp .cl-fact-strip div{background:#f7fafc;border:1px solid var(--cl-line);border-radius:8px;padding:15px}\r\n.coverlan-pdp .cl-fact-strip strong{display:block;color:var(--cl-blue);font-size:13px;margin-bottom:4px}\r\n.coverlan-pdp .cl-fact-strip span{font-size:14px;line-height:1.45;color:var(--cl-ink)}\r\n\r\n@media(max-width:767px){.coverlan-pdp .cl-evidence-grid,.coverlan-pdp .cl-fact-strip{grid-template-columns:1fr}}\r\n@media(max-width:1024px){.coverlan-pdp .cl-fact-strip{grid-template-columns:repeat(2,minmax(0,1fr))}}\r\n<\/style>\r\n<section class=\"coverlan-pdp\">\r\n<div class=\"cl-band cl-band--blue cl-hero\"><div class=\"cl-inner cl-hero-grid\">\r\n<div class=\"cl-hero-copy\">\r\n<p class=\"cl-eyebrow\">Conveyor Metal Detection Equipment<\/p>\r\n<h1>GJT-F Metal Detector for Belt Conveyors<\/h1>\r\n<p class=\"cl-lead\">Corvelan GJT-F <a href=\"\/product-category\/metal-detection-equipment\/\">metal detectors<\/a> find unwanted metal in bulk materials moving on belt conveyors before it reaches crushers or other downstream equipment. The current family covers nominal belt widths from 500 to 2000 mm. We select the starting model from belt width, then check material depth, target metal, belt speed and installation conditions before confirming the equipment.<\/p>\r\n<div class=\"cl-actions\"><a class=\"cl-btn cl-btn-primary cta-hero\" href=\"https:\/\/www.corvelanmag.com\/contact-us\/\">Send Your Conveyor Details<\/a><a class=\"cl-btn cl-btn-secondary\" href=\"#gjt-f-model-range\">View Model Range<\/a><\/div>\r\n<div class=\"cl-snapshot\">\r\n<div><strong>Application<\/strong><span>Bulk-material belt conveyors that need metal detection before a critical downstream step.<\/span><\/div>\r\n<div><strong>Detects<\/strong><span>Iron, aluminum, stainless steel and alloy metal targets listed in the GJT-F family data.<\/span><\/div>\r\n<div><strong>Model Range<\/strong><span>GJT-5F through GJT-20F for nominal belt widths from 500 to 2000 mm.<\/span><\/div>\r\n<div><strong>Send Us<\/strong><span>Belt width, material depth, speed, target metal, conveyor layout and the required line action.<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"cl-hero-media\"><img fetchpriority=\"high\" decoding=\"async\" alt=\"GJT-F metal detector installed around a bulk-material conveyor belt\" data-evidence-type=\"REAL_PRODUCT_INSTALLATION\" height=\"900\" loading=\"eager\" src=\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-conveyor-hero.webp\" width=\"1200\"><\/div>\r\n<\/div><\/div>\r\n<div class=\"cl-band\"><div class=\"cl-inner\" style=\"padding-top:18px;padding-bottom:18px\">\r\n<nav aria-label=\"GJT-F page sections\" class=\"cl-section-nav\">\r\n<a href=\"#gjt-f-quick-fit\">Fit<\/a><a href=\"#gjt-f-difference\">Detector vs Magnet<\/a><a href=\"#gjt-f-selection\">Selection<\/a><a href=\"#gjt-f-model-range\">Models &amp; Specs<\/a><a href=\"#gjt-f-installation\">Installation<\/a><a href=\"#gjt-f-faq\">FAQ<\/a><a href=\"#gjt-f-quote\">Quote Inputs<\/a>\r\n<\/nav>\r\n<\/div><\/div>\r\n<div class=\"cl-band cl-band--soft cl-anchor\" id=\"gjt-f-quick-fit\"><div class=\"cl-inner\">\r\n<div class=\"cl-intro\"><p class=\"cl-eyebrow\">Quick Fit<\/p><h2>Is the GJT-F right for your conveyor?<\/h2>\r\n<p>We recommend the GJT-F for belt-conveyed bulk material when unwanted metal must be found before the next process step. Belt width starts the model choice; the material, target metal, speed and installation decide whether the setup is suitable.<\/p><\/div>\r\n<div class=\"cl-grid-3\">\r\n<article class=\"cl-card cl-card--good\"><h3>Good fit<\/h3><ul><li>Bulk solids moving on a belt conveyor.<\/li><li>A clear point exists before a crusher, mill or other critical equipment.<\/li><li>The line can use an alarm, belt stop, PLC signal or another response after detection.<\/li><\/ul><\/article>\r\n<article class=\"cl-card cl-card--review\"><h3>We check first<\/h3><ul><li>Material depth, belt speed and the metal target.<\/li><li>Belt clips or splices, vibration and nearby steelwork.<\/li><li>Magnets, large motors, VFDs or other possible interference sources.<\/li><\/ul><\/article>\r\n<article class=\"cl-card cl-card--limit\"><h3>Another solution may be better<\/h3><ul><li>The process needs physical metal removal without a separate reject or separation device.<\/li><li>The material moves through a wet slurry, gravity pipe or pneumatic line instead of a belt conveyor.<\/li><li>The project needs construction or certification that has not been confirmed for the quoted equipment.<\/li><\/ul><\/article>\r\n<\/div><\/div><\/div>\r\n<div class=\"cl-band\"><div class=\"cl-inner\"><div class=\"cl-intro\"><p class=\"cl-eyebrow\">Why &amp; Where<\/p>\r\n<h2>Why use GJT-F, and where should it go?<\/h2>\r\n<p>The detector is most useful where finding metal gives the conveyor enough time to react before a critical machine or process step. Corvelan reviews the line action together with the installation point.<\/p><\/div>\r\n<div class=\"cl-grid-2\">\r\n<article class=\"cl-card\"><h3>Before a crusher or mill<\/h3><p>Detect damaging metal before it reaches crushing, grinding or other vulnerable equipment.<\/p><\/article>\r\n<article class=\"cl-card\"><h3>After a transfer point<\/h3><p>Check the material after loading or transfer steps where contamination may enter the product stream.<\/p><\/article>\r\n<article class=\"cl-card\"><h3>Before another critical process<\/h3><p>Place the detector where an alarm, belt stop or other action can still happen before the metal reaches the protected equipment.<\/p><\/article>\r\n<article class=\"cl-card\"><h3>As part of the control system<\/h3><p>Use the relay output for an alarm, belt stop, PLC input, marking device or another defined line response.<\/p><\/article>\r\n<\/div>\r\n<div class=\"cl-diagram\"><img loading=\"lazy\" decoding=\"async\" alt=\"Frame metal detector installed on a bulk material conveyor upstream of a crusher\" data-evidence-type=\"GENERATED_EDUCATIONAL\" height=\"900\" loading=\"lazy\" src=\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-before-crusher-installation.webp\" width=\"1200\"><p class=\"cl-caption\">Process-position diagram showing typical detector locations before critical equipment.<\/p><\/div>\r\n<\/div><\/div>\r\n<div class=\"cl-band cl-band--soft cl-anchor\" id=\"gjt-f-difference\"><div class=\"cl-inner\">\r\n<div class=\"cl-intro\"><p class=\"cl-eyebrow\">Detector vs Magnetic Separator<\/p><h2>GJT-F metal detector vs magnetic separator: what is the difference?<\/h2><p>A metal detector finds a metal event and sends a signal. A magnetic separator physically captures suitable magnetic metal. They solve different parts of the contamination problem and can be used together.<\/p><\/div>\r\n<div aria-label=\"Metal detector versus magnetic separator comparison\" class=\"cl-table-wrap\" role=\"region\" tabindex=\"0\"><table class=\"cl-quick-table\">\r\n<thead><tr><th>Question<\/th><th>GJT-F Metal Detector<\/th><th>Magnetic Separator<\/th><\/tr><\/thead>\r\n<tbody>\r\n<tr><th scope=\"row\">Main job<\/th><td>Detect a metal event and send an output signal.<\/td><td>Physically capture or separate suitable magnetic metal.<\/td><\/tr>\r\n<tr><th scope=\"row\">Iron \/ steel<\/th><td>Can be detected when the target and operating conditions are suitable.<\/td><td>Suitable magnetic iron or steel can be captured by the correct separator.<\/td><\/tr>\r\n<tr><th scope=\"row\">Aluminum \/ other non-magnetic metal<\/th><td>Can be detected under suitable conditions.<\/td><td>Conventional magnetic separators do not capture non-magnetic aluminum.<\/td><\/tr>\r\n<tr><th scope=\"row\">What happens after detection?<\/th><td>Relay output can be used for an alarm, belt stop, PLC input or another action.<\/td><td>The separator performs the physical magnetic removal step.<\/td><\/tr>\r\n<tr><th scope=\"row\">Can they work together?<\/th><td>Yes. Detection can be added where the line also needs to find metal that a magnet may not remove.<\/td><td>Yes. Magnetic removal can be used upstream or downstream depending on the process.<\/td><\/tr>\r\n<\/tbody>\r\n<\/table><\/div>\r\n<p class=\"cl-note\"><strong>Selection point:<\/strong> tell Corvelan whether you need metal detection, magnetic removal, or both. We will review the material, target contaminant and conveyor layout before recommending the equipment path.<\/p>\r\n<div class=\"cl-diagram\"><img loading=\"lazy\" decoding=\"async\" alt=\"Frame metal detector and suspended magnetic separator installed at different positions along a bulk material conveyor\" data-evidence-type=\"GENERATED_EDUCATIONAL\" height=\"900\" loading=\"lazy\" src=\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-metal-detector-magnetic-separator-conveyor-process.webp\" width=\"1200\"><p class=\"cl-caption\">Engineering diagram comparing metal detection and magnetic removal positions on a conveyor line.<\/p><\/div><\/div><\/div>\r\n<div class=\"cl-band cl-band--soft\"><div class=\"cl-inner cl-media-grid\"><div><p class=\"cl-eyebrow\">Material &amp; Target Metal<\/p><h2>What material and metal target should we review?<\/h2><p>Current GJT-F technical specifications cover applications in thermal power, cement, building materials, papermaking, mining, food and chemical processing. We still review the actual conveyed material before selecting the detector.<\/p><p>The specifications cover iron, aluminum, stainless steel and alloy metal targets. Detection depends on more than metal type, so send the target size or shape when it matters to your process.<\/p><p class=\"cl-kicker\">Send these material details when available:<\/p><ul><li>Material and physical form<\/li><li>Target metal and target size or shape<\/li><li>Normal and maximum material depth on the belt<\/li><li>Particle size, moisture and bulk density when relevant<\/li><\/ul><\/div><div class=\"cl-media\"><img loading=\"lazy\" decoding=\"async\" alt=\"GJT-F metal detector on a conveyor handling coarse bulk material\" data-evidence-type=\"REAL_PRODUCT_INSTALLATION\" height=\"900\" loading=\"lazy\" src=\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-conveyor-process-view.webp\" width=\"1200\"><\/div><\/div><\/div>\r\n<div class=\"cl-band\"><div class=\"cl-inner\"><div class=\"cl-intro\"><p class=\"cl-eyebrow\">Working Principle<\/p><h2>How does a GJT-F conveyor belt metal detector work?<\/h2>\r\n<p>Bulk material passes through the sensing opening. A metal object changes the electromagnetic signal. The electronics evaluate that change and the relay sends a detection signal to the conveyor control system.<\/p><\/div>\r\n<div class=\"cl-flow\"><div><strong>01 \u2014 Material passes<\/strong>The conveyor carries material through the sensing zone.<\/div><div><strong>02 \u2014 Metal changes the signal<\/strong>A metal object changes the electromagnetic response.<\/div><div><strong>03 \u2014 Electronics evaluate<\/strong>The detector checks and amplifies the change.<\/div><div><strong>04 \u2014 Relay sends the output<\/strong>The line can use the signal for an alarm, stop or another action.<\/div><\/div><\/div><\/div>\r\n<div class=\"cl-band cl-band--soft cl-anchor\" id=\"gjt-f-selection\"><div class=\"cl-inner\"><div class=\"cl-intro\"><p class=\"cl-eyebrow\">Model Selection<\/p><h2>How does Corvelan select the starting GJT-F model?<\/h2>\r\n<p>Belt width gives us the first model to review. We then check material depth, target metal, belt speed, the installation environment and the action required after detection.<\/p><\/div>\r\n<div class=\"cl-diagram\"><img loading=\"lazy\" decoding=\"async\" alt=\"Engineering selection review photo showing a GJT-F metal detector on a bulk material conveyor during installation review\" data-evidence-type=\"GENERATED_EDUCATIONAL\" height=\"900\" loading=\"lazy\" src=\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-selection-review.webp\" width=\"1200\"><p class=\"cl-caption\"><strong>Educational selection flow:<\/strong> belt width is the starting point, not the final model decision.<\/p><\/div>\r\n<div aria-label=\"GJT-F quick model selector\" class=\"cl-table-wrap\" role=\"region\" tabindex=\"0\"><table class=\"cl-quick-table\"><thead><tr><th>Nominal belt width (mm)<\/th><th>Starting model to review<\/th><th>What Corvelan checks next<\/th><\/tr><\/thead><tbody>\r\n<tr><td>500<\/td><th scope=\"row\">GJT-5F<\/th><td rowspan=\"9\" style=\"white-space:normal;min-width:360px\">Material depth, target metal, normal and maximum belt speed, available space, vibration, belt splice or clips, nearby magnets or motors, and the required alarm \/ stop \/ PLC action.<\/td><\/tr>\r\n<tr><td>650<\/td><th scope=\"row\">GJT-6F<\/th><\/tr><tr><td>800<\/td><th scope=\"row\">GJT-8F<\/th><\/tr><tr><td>1000<\/td><th scope=\"row\">GJT-10F<\/th><\/tr><tr><td>1200<\/td><th scope=\"row\">GJT-12F<\/th><\/tr><tr><td>1400<\/td><th scope=\"row\">GJT-14F<\/th><\/tr><tr><td>1600<\/td><th scope=\"row\">GJT-16F<\/th><\/tr><tr><td>1800<\/td><th scope=\"row\">GJT-18F<\/th><\/tr><tr><td>2000<\/td><th scope=\"row\">GJT-20F<\/th><\/tr>\r\n<\/tbody><\/table><\/div>\r\n<div class=\"cl-callout\"><strong>Do not select by belt width alone.<\/strong> A belt width match does not confirm detection performance or installation suitability.<\/div>\r\n<div class=\"cl-actions\"><a class=\"cl-btn cl-btn-blue cta-mid\" href=\"https:\/\/www.corvelanmag.com\/contact-us\/\">Ask Corvelan to Check Your Model<\/a><\/div>\r\n<\/div><\/div>\r\n<div class=\"cl-band cl-anchor\" id=\"gjt-f-model-range\"><div class=\"cl-inner\">\r\n<div class=\"cl-intro\"><p class=\"cl-eyebrow\">Model Selection Table<\/p><h2>GJT-F models for 500\u20132000 mm nominal conveyor belt widths<\/h2><p><strong>The current GJT-F family covers nine models for nominal belt widths from 500 to 2000 mm.<\/strong> Use the table for family specifications, then confirm the application conditions before treating any sensitivity value as a pass\/fail requirement.<\/p><\/div>\r\n<div aria-label=\"GJT-F model selection specifications\" class=\"cl-table-wrap\" role=\"region\" tabindex=\"0\"><table class=\"cl-table--select\">\r\n<thead><tr><th>Model<\/th><th>Belt width (mm)<\/th><th>Power (W)<\/th><th>Belt speed (m\/s)<\/th><th>Family reference sensitivity*<\/th><th>Weight (kg)<\/th><\/tr><\/thead>\r\n<tbody><tr><th scope=\"row\">GJT-5F<\/th><td>500<\/td><td>\u226440<\/td><td>0.8\u20132.5<\/td><td>\u03c620 mm iron\/aluminum sphere*<\/td><td>105<\/td><\/tr><tr><th scope=\"row\">GJT-6F<\/th><td>650<\/td><td>\u226440<\/td><td>0.8\u20132.5<\/td><td>\u03c620 mm iron\/aluminum sphere*<\/td><td>125<\/td><\/tr><tr><th scope=\"row\">GJT-8F<\/th><td>800<\/td><td>\u226450<\/td><td>0.8\u20132.5<\/td><td>\u03c620 mm iron\/aluminum sphere*<\/td><td>160<\/td><\/tr><tr><th scope=\"row\">GJT-10F<\/th><td>1000<\/td><td>\u226450<\/td><td>0.8\u20132.5<\/td><td>\u03c620 mm iron\/aluminum sphere*<\/td><td>190<\/td><\/tr><tr><th scope=\"row\">GJT-12F<\/th><td>1200<\/td><td>\u226450<\/td><td>0.8\u20132.5<\/td><td>\u03c620 mm iron\/aluminum sphere*<\/td><td>255<\/td><\/tr><tr><th scope=\"row\">GJT-14F<\/th><td>1400<\/td><td>\u226460<\/td><td>0.8\u20132.5<\/td><td>\u03c620 mm iron\/aluminum sphere*<\/td><td>290<\/td><\/tr><tr><th scope=\"row\">GJT-16F<\/th><td>1600<\/td><td>\u226460<\/td><td>0.8\u20132.5<\/td><td>\u03c620 mm iron\/aluminum sphere*<\/td><td>350<\/td><\/tr><tr><th scope=\"row\">GJT-18F<\/th><td>1800<\/td><td>\u226465<\/td><td>0.8\u20132.5<\/td><td>\u03c620 mm iron\/aluminum sphere*<\/td><td>430<\/td><\/tr><tr><th scope=\"row\">GJT-20F<\/th><td>2000<\/td><td>\u226470<\/td><td>0.8\u20132.5<\/td><td>\u03c620 mm iron\/aluminum sphere*<\/td><td>480<\/td><\/tr><\/tbody>\r\n<\/table><\/div>\r\n<p class=\"cl-note\"><strong>*Reference sensitivity:<\/strong> the published product family specifications lists a \u03c620 mm iron\/aluminum sphere reference but does not state the controlled test method. We use it as a family selection reference, not as an unconditional minimum-detection guarantee for every material, burden depth or installation.<\/p>\r\n<p class=\"cl-small\">Family electrical input listed in the supplied data: AC 220 V \u00b110%, 50 Hz.<\/p>\r\n<\/div><\/div>\r\n<div class=\"cl-band cl-band--soft\"><div class=\"cl-inner\">\r\n<div class=\"cl-intro\"><p class=\"cl-eyebrow\">Installation Dimensions<\/p><h2>Check the GJT-F dimensions before planning the installation<\/h2><p>Use A, B, C, D, E, L and L1 from the family drawing to check whether the detector frame and support area fit the available conveyor space. The final layout still depends on the selected model and site clearances.<\/p><\/div>\r\n<div aria-label=\"GJT-F installation dimensions\" class=\"cl-table-wrap\" role=\"region\" tabindex=\"0\"><table class=\"cl-table--dims\">\r\n<thead><tr><th>Model<\/th><th>A (mm)<\/th><th>B (mm)<\/th><th>C (mm)<\/th><th>D (mm)<\/th><th>E (mm)<\/th><th>L (mm)<\/th><th>L1 (mm)<\/th><\/tr><\/thead>\r\n<tbody><tr><th scope=\"row\">GJT-5F<\/th><td>820<\/td><td>690<\/td><td>250<\/td><td>410<\/td><td>250<\/td><td>740<\/td><td>300<\/td><\/tr><tr><th scope=\"row\">GJT-6F<\/th><td>1000<\/td><td>840<\/td><td>250<\/td><td>410<\/td><td>250<\/td><td>890<\/td><td>300<\/td><\/tr><tr><th scope=\"row\">GJT-8F<\/th><td>1200<\/td><td>1010<\/td><td>250<\/td><td>410<\/td><td>250<\/td><td>1090<\/td><td>300<\/td><\/tr><tr><th scope=\"row\">GJT-10F<\/th><td>1400<\/td><td>1240<\/td><td>250<\/td><td>410<\/td><td>250<\/td><td>1320<\/td><td>300<\/td><\/tr><tr><th scope=\"row\">GJT-12F<\/th><td>1630<\/td><td>1470<\/td><td>250<\/td><td>430<\/td><td>300<\/td><td>1550<\/td><td>370<\/td><\/tr><tr><th scope=\"row\">GJT-14F<\/th><td>1830<\/td><td>1680<\/td><td>250<\/td><td>430<\/td><td>300<\/td><td>1740<\/td><td>370<\/td><\/tr><tr><th scope=\"row\">GJT-16F<\/th><td>2050<\/td><td>1890<\/td><td>250<\/td><td>430<\/td><td>300<\/td><td>1950<\/td><td>370<\/td><\/tr><tr><th scope=\"row\">GJT-18F<\/th><td>2280<\/td><td>2120<\/td><td>250<\/td><td>430<\/td><td>300<\/td><td>2180<\/td><td>370<\/td><\/tr><tr><th scope=\"row\">GJT-20F<\/th><td>2500<\/td><td>2340<\/td><td>250<\/td><td>430<\/td><td>300<\/td><td>2400<\/td><td>370<\/td><\/tr><\/tbody>\r\n<\/table><\/div>\r\n<\/div><\/div>\r\n<div class=\"cl-band cl-band--soft cl-anchor\" id=\"gjt-f-installation\"><div class=\"cl-inner\"><div class=\"cl-intro\"><p class=\"cl-eyebrow\">Performance &amp; Installation<\/p><h2>What can change GJT-F detection or installation performance?<\/h2>\r\n<p>One sensitivity number does not describe the whole application. We check the metal target, material, conveyor and surrounding equipment together.<\/p><\/div>\r\n<div aria-label=\"GJT-F performance and installation checklist\" class=\"cl-table-wrap\" role=\"region\" tabindex=\"0\"><table class=\"cl-check-table\"><thead><tr><th>Check<\/th><th>Why it matters<\/th><th>What to send Corvelan<\/th><\/tr><\/thead><tbody>\r\n<tr><th scope=\"row\">Target metal<\/th><td>Type, size, shape and direction affect the detection target.<\/td><td>Metal type and the smallest piece that matters.<\/td><\/tr>\r\n<tr><th scope=\"row\">Material depth<\/th><td>Changes the distance between the target and sensing zone.<\/td><td>Normal and maximum depth on the belt.<\/td><\/tr>\r\n<tr><th scope=\"row\">Material condition<\/th><td>Conductive, magnetic or highly mineralized material can change the detector response.<\/td><td>Material, moisture, particle size and bulk density when relevant.<\/td><\/tr>\r\n<tr><th scope=\"row\">Belt speed<\/th><td>The family reference is 0.8\u20132.5 m\/s.<\/td><td>Normal and maximum speed.<\/td><\/tr>\r\n<tr><th scope=\"row\">Vibration<\/th><td>The family instruction shows direct frame mounting below 0.5 mm vibration amplitude and a separate fixed support above that reference.<\/td><td>Photo, video or measured vibration information if available.<\/td><\/tr>\r\n<tr><th scope=\"row\">Belt splice \/ clips<\/th><td>Metal parts in the belt can affect the detection setup.<\/td><td>Photo, drawing or splice \/ clip type.<\/td><\/tr>\r\n<tr><th scope=\"row\">Nearby equipment<\/th><td>Magnets, large motors, VFDs and heavy steelwork can affect the installation environment.<\/td><td>Conveyor layout and the position of nearby equipment.<\/td><\/tr>\r\n<\/tbody><\/table><\/div>\r\n<div class=\"cl-media-grid\" style=\"margin-top:26px\"><div><p class=\"cl-kicker\">Family installation references<\/p><ul><li><strong>Power:<\/strong> AC 220 V \u00b110%, 50 Hz.<\/li><li><strong>Vibration:<\/strong> below 0.5 mm is the family reference for direct conveyor-frame mounting.<\/li><li><strong>Nearby belt-type magnetic separator:<\/strong> the supplied family layout shows more than 10 m as an example arrangement, not a universal rule for every site.<\/li><li><strong>Access:<\/strong> leave room for the control enclosure, wiring checks and test pieces.<\/li><\/ul><\/div><div class=\"cl-media\"><img loading=\"lazy\" decoding=\"async\" alt=\"GJT-F metal detector installed on an industrial belt conveyor\" data-evidence-type=\"REAL_PRODUCT_INSTALLATION\" height=\"900\" loading=\"lazy\" src=\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-conveyor-installation-01.webp\" width=\"1200\"><\/div><\/div>\r\n<\/div><\/div>\r\n<div class=\"cl-band\"><div class=\"cl-inner\"><div class=\"cl-intro\"><p class=\"cl-eyebrow\">Controls &amp; Response<\/p><h2>How can the GJT-F connect to the conveyor control system?<\/h2>\r\n<p><strong>The detector finds metal and sends a control signal; it does not physically remove the metal by itself.<\/strong> The GJT-F family data lists one normally open (NO) and one normally closed (NC) relay contact, plus a 1\u201310 second delayed relay release. The outputs can connect to an alarm, belt stop, PLC, marking device or another reject \/ separation device.<\/p><\/div><\/div><\/div>\r\n<div class=\"cl-band cl-band--soft\"><div class=\"cl-inner\"><div class=\"cl-intro\"><p class=\"cl-eyebrow\">Detection Check<\/p><h2>How do we check whether the GJT-F can meet your detection target?<\/h2>\r\n<p>A useful target needs more than one sensitivity number. The \u03c620 mm iron\/aluminum sphere value in the family table remains a family reference because the supplied sheet does not give a complete controlled test method.<\/p><\/div>\r\n<div class=\"cl-step-grid\"><div class=\"cl-step\"><strong>1 \u2014 Target metal<\/strong>Define the metal type, approximate size, shape and the smallest piece that matters.<\/div><div class=\"cl-step\"><strong>2 \u2014 Material condition<\/strong>Define the conveyed material, material depth and relevant moisture or mineralization.<\/div><div class=\"cl-step\"><strong>3 \u2014 Conveyor condition<\/strong>Confirm belt speed, splice or clip type, vibration and the installation arrangement.<\/div><div class=\"cl-step\"><strong>4 \u2014 Required line action<\/strong>Confirm whether detection should trigger an alarm, belt stop, PLC input or another action.<\/div><div class=\"cl-step\"><strong>5 \u2014 Check method<\/strong>If a recorded pass\/fail check is required, agree on the test piece, position, operating condition and record before order.<\/div><\/div>\r\n<p class=\"cl-note\"><strong>Important:<\/strong> the family \u03c620 mm reference is not published here as an unconditional minimum detection guarantee.<\/p><\/div><\/div>\r\n<div class=\"cl-band\"><div class=\"cl-inner\"><div class=\"cl-intro\"><p class=\"cl-eyebrow\">Family Information &amp; Project Check<\/p><h2>What is confirmed for the GJT-F family, and what do we confirm for your project?<\/h2>\r\n<p>The current GJT-F published product family specifications and real family installation photos support the product identity, model range, listed electrical\/control data, dimensions and installation references used on this page. Detection performance for a specific line still depends on the actual material, target metal and installation condition.<\/p><\/div>\r\n<div class=\"cl-fact-strip\">\r\n<div><strong>MODEL RANGE<\/strong><span>GJT-5F to GJT-20F for nominal belt widths from 500 to 2000 mm.<\/span><\/div>\r\n<div><strong>BELT SPEED REFERENCE<\/strong><span>0.8\u20132.5 m\/s is listed in the current family data.<\/span><\/div>\r\n<div><strong>POWER \/ OUTPUT<\/strong><span>AC 220 V \u00b110%, 50 Hz; one NO and one NC relay contact are listed.<\/span><\/div>\r\n<div><strong>DELAY \/ INSTALLATION<\/strong><span>1\u201310 s relay release; vibration and nearby-magnet references are treated as family installation guidance.<\/span><\/div>\r\n<\/div>\r\n<div class=\"cl-evidence-grid\">\r\n<div class=\"cl-evidence-card cl-evidence-card--confirmed\"><span class=\"cl-evidence-label\">Confirmed from current family information<\/span><ul><li>GJT-5F through GJT-20F model range.<\/li><li>500\u20132000 mm nominal belt-width range.<\/li><li>0.8\u20132.5 m\/s family belt-speed reference.<\/li><li>AC 220 V \u00b110%, 50 Hz input.<\/li><li>One normally open (NO) and one normally closed (NC) relay contact.<\/li><li>1\u201310 second delayed relay release.<\/li><li>Below 0.5 mm conveyor-frame vibration as the family reference for direct mounting.<\/li><li>More than 10 m from a belt-type magnetic separator in the supplied example layout.<\/li><li>\u03c620 mm iron\/aluminum sphere value as a family sensitivity reference, not an unconditional minimum guarantee.<\/li><\/ul><\/div>\r\n<div class=\"cl-evidence-card cl-evidence-card--project\"><span class=\"cl-evidence-label\">We confirm for each project<\/span><ul><li>The smallest metal target that matters to your process.<\/li><li>How the conveyed material and material depth affect the required detection check.<\/li><li>The exact mounting position, support and surrounding steelwork.<\/li><li>Belt splice \/ clip details, vibration and nearby magnetic or electrical equipment.<\/li><li>Alarm, belt-stop, PLC or other required control action.<\/li><li>The pass\/fail test method if a recorded acceptance check is required.<\/li><li>Any special construction, documentation or certification required by the project.<\/li><\/ul><\/div>\r\n<\/div>\r\n<div class=\"cl-proof-grid\">\r\n<figure class=\"cl-proof\"><img loading=\"lazy\" decoding=\"async\" alt=\"GJT-F metal detector spanning a conveyor carrying bulk material\" data-evidence-type=\"REAL_PRODUCT_INSTALLATION\" height=\"900\" loading=\"lazy\" src=\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-bulk-material-line.webp\" width=\"1200\"><figcaption class=\"cl-caption\">Real GJT-F family conveyor installation view. No exact submodel or performance result is inferred from the photo alone.<\/figcaption><\/figure>\r\n<figure class=\"cl-proof\"><img loading=\"lazy\" decoding=\"async\" alt=\"Industrial conveyor installation view of a GJT-F metal detector\" data-evidence-type=\"REAL_PRODUCT_INSTALLATION\" height=\"900\" loading=\"lazy\" src=\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-conveyor-installation-02.webp\" width=\"1200\"><figcaption class=\"cl-caption\">Real installation view used to review detector position, access and surrounding conveyor steelwork.<\/figcaption><\/figure>\r\n<figure class=\"cl-proof\"><img loading=\"lazy\" decoding=\"async\" alt=\"GJT-F frame metal detector integrated with conveyor steelwork\" data-evidence-type=\"REAL_PRODUCT_INSTALLATION\" height=\"900\" loading=\"lazy\" src=\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-conveyor-installation-03.webp\" width=\"1200\"><figcaption class=\"cl-caption\">Real GJT-F family installation view showing how the detector frame integrates around the conveyor.<\/figcaption><\/figure>\r\n<\/div>\r\n<p class=\"cl-proof-note\">Engineering diagrams illustrate the detection principles, installation positions and key selection factors.<\/p>\r\n<\/div><\/div>\r\n<div class=\"cl-band\"><div class=\"cl-inner\">\r\n<div class=\"cl-intro\"><p class=\"cl-eyebrow\">What Happens Next<\/p><h2>What happens after you send Corvelan your conveyor details?<\/h2><p>We use the submitted information to narrow the model, check the installation conditions and define the remaining inputs required for quotation.<\/p><\/div>\r\n<div class=\"cl-flow\">\r\n<div><strong>01<\/strong><span>We review belt width, speed, material depth and available space.<\/span><\/div>\r\n<div><strong>02<\/strong><span>We review the target metal and the smallest piece that matters to your process.<\/span><\/div>\r\n<div><strong>03<\/strong><span>We review vibration, nearby equipment, belt splice and the required control action.<\/span><\/div>\r\n<div><strong>04<\/strong><span>We prepare the model and project information needed for the quote.<\/span><\/div>\r\n<\/div>\r\n<\/div><\/div>\r\n<div class=\"cl-band cl-anchor\" id=\"gjt-f-faq\"><div class=\"cl-inner\">\r\n<div class=\"cl-intro\"><p class=\"cl-eyebrow\">FAQ<\/p><h2>GJT-F <a href=\"https:\/\/www.corvelanmag.com\/product-category\/conveyor-metal-detector\/\">conveyor metal detector<\/a> questions<\/h2><\/div>\r\n<details class=\"cl-faq\"><summary>What metals can the GJT-F metal detector detect?<\/summary><div><p>Our current GJT-F family data lists iron, aluminum, stainless steel and alloy metals. The smallest metal size the detector can find in real use still depends on metal size, shape and direction, material depth, the conveyed material and installation conditions.<\/p><\/div><\/details>\r\n<details class=\"cl-faq\"><summary>What conveyor belt widths are available?<\/summary><div><p>Our current GJT-F family range covers nominal belt widths from 500 to 2000 mm, from GJT-5F through GJT-20F. We confirm the final model against the actual belt profile, material depth and available installation space.<\/p><\/div><\/details>\r\n<details class=\"cl-faq\"><summary>What does the \u03c620 mm sensitivity reference mean?<\/summary><div><p>The family table lists a \u03c620 mm iron\/aluminum sphere reference. Because the supplied sheet does not give a complete test method or cover every material condition, we use this value as a selection reference. If the smallest metal size is critical, we check it under the agreed operating condition.<\/p><\/div><\/details>\r\n<details class=\"cl-faq\"><summary>Can the GJT-F be installed near a magnetic separator?<\/summary><div><p>The family layout drawing shows more than 10 m from a belt-type magnetic separator and non-magnetic rollers near the detector as an example arrangement. Send us the actual layout because magnet type, steelwork and electrical interference vary from site to site.<\/p><\/div><\/details>\r\n<details class=\"cl-faq\"><summary>Can it work with metal belt clips or splices?<\/summary><div><p>The family data references a metal belt-clip detection function. We confirm the actual clip or splice design and include it in the detection check for your conveyor.<\/p><\/div><\/details>\r\n<details class=\"cl-faq\"><summary>Does the GJT-F remove the metal after detection?<\/summary><div><p>No. The GJT-F detects the event and provides alarm\/relay outputs. Physical removal requires the separate response designed into your line, such as belt stop\/manual removal, a reject device or another separation device.<\/p><\/div><\/details>\r\n<details class=\"cl-faq\"><summary>What should I send Corvelan for GJT-F selection?<\/summary><div><p>Start with the material, target metal, throughput and conveyor\/installation drawing or condition. If available, also send belt width, speed, burden depth, splice type, vibration, nearby magnetic\/electrical equipment, power and the action you want after detection.<\/p><\/div><\/details>\r\n<\/div><\/div>\r\n<div class=\"cl-band cl-band--soft cl-anchor\" id=\"gjt-f-quote\"><div class=\"cl-inner\">\r\n<div class=\"cl-intro\"><p class=\"cl-eyebrow\">What to Send for a Quote<\/p><h2>What do we need to select your GJT-F and prepare a quote?<\/h2><p>Start with the four items below. Add conveyor and detection details when available so we can check the model and installation with less back-and-forth.<\/p><\/div>\r\n<div class=\"cl-grid-3\">\r\n<div class=\"cl-card\"><h3>Required to Start<\/h3><ul><li>Material and physical form<\/li><li>Target metal \/ damaging object<\/li><li>Throughput \u2014 how much material the conveyor carries per hour<\/li><li>Conveyor or installation condition \/ drawing<\/li><\/ul><\/div>\r\n<div class=\"cl-card\"><h3>Strongly Recommended<\/h3><ul><li>Belt width and trough profile<\/li><li>Normal and maximum belt speed<\/li><li>Normal and maximum material depth on the belt<\/li><li>Particle size, moisture and bulk density if relevant<\/li><li>Belt splice\/clip or steel-cord details<\/li><li>Vibration and nearby equipment<\/li><\/ul><\/div>\r\n<div class=\"cl-card\"><h3>If You Have a Pass\/Fail Target<\/h3><ul><li>Target metal size, shape and orientation<\/li><li>Where the test piece should be placed<\/li><li>Required alarm \/ belt-stop \/ PLC action<\/li><li>Required standards or project documents<\/li><li>Any test record you need with the order<\/li><\/ul><\/div>\r\n<\/div>\r\n<p class=\"cl-note\">Send these details to Corvelan. We will check the GJT-F model range, installation conditions and the control action you need before preparing the quote.<\/p>\r\n<\/div><\/div>\r\n<div class=\"cl-band cl-band--blue\"><div class=\"cl-inner cl-final\">\r\n<p class=\"cl-eyebrow\">Next Step<\/p><h2>Send Your Metal Detection Requirement<\/h2><p>Send the material, target metal, throughput and conveyor details. We will review the starting model, installation conditions and the detection requirements needed to complete the quotation.<\/p>\r\n<div class=\"cl-actions\"><a class=\"cl-btn cl-btn-primary cta-final\" href=\"https:\/\/www.corvelanmag.com\/contact-us\/\">Send Your Metal Detection Requirement<\/a><\/div>\r\n<\/div><\/div>\r\n<\/section>\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"Product\",\"name\":\"GJT-F Metal Detector for Belt Conveyors\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Coverlan\"},\"model\":\"GJT-F\",\"category\":\"Industrial conveyor metal detector\",\"description\":\"Coverlan GJT-F conveyor metal detectors for bulk-material belt conveyors with nominal widths from 500 to 2000 mm. The page covers fit, model selection, installation factors, detector-versus-magnetic-separator differences, control outputs and quote inputs.\",\"image\":[\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-conveyor-hero.webp\",\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-conveyor-process-view.webp\",\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-conveyor-installation-01.webp\",\"https:\/\/www.corvelanmag.com\/wp-content\/uploads\/2026\/09\/coverlan-gjt-f-metal-detector-conveyor-installation-02.webp\"],\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Family model belt width range\",\"value\":\"500\u20132000 mm (GJT-5F through GJT-20F; final model is confirmed from the conveyor and detection details)\"},{\"@type\":\"PropertyValue\",\"name\":\"Family belt speed reference\",\"value\":\"0.8\u20132.5 m\/s; application conditions apply\"},{\"@type\":\"PropertyValue\",\"name\":\"Family input power\",\"value\":\"AC 220 V \u00b110%, 50 Hz\"},{\"@type\":\"PropertyValue\",\"name\":\"Control output\",\"value\":\"One normally-open and one normally-closed relay contact listed in family data\"}]}<\/script>\n\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Conveyor Metal Detection Equipment GJT-F Metal Detector for Belt Conveyors Corvelan GJT-F metal detectors find unwanted metal in bulk materials moving on belt conveyors before it reaches crushers or other downstream equipment. The current family covers nominal belt widths from 500 to 2000 mm. We select the starting model from belt width, then check material [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4213,"parent":0,"menu_order":17,"comment_status":"open","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"product-category":[41],"class_list":["post-4604","product","type-product","status-publish","format-standard","has-post-thumbnail","hentry","product-category-magnetic-separation-equipment"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.corvelanmag.com\/fr\/wp-json\/wp\/v2\/product\/4604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.corvelanmag.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.corvelanmag.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"author":[{"embeddable":true,"href":"https:\/\/www.corvelanmag.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.corvelanmag.com\/fr\/wp-json\/wp\/v2\/comments?post=4604"}],"version-history":[{"count":5,"href":"https:\/\/www.corvelanmag.com\/fr\/wp-json\/wp\/v2\/product\/4604\/revisions"}],"predecessor-version":[{"id":5037,"href":"https:\/\/www.corvelanmag.com\/fr\/wp-json\/wp\/v2\/product\/4604\/revisions\/5037"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.corvelanmag.com\/fr\/wp-json\/wp\/v2\/media\/4213"}],"wp:attachment":[{"href":"https:\/\/www.corvelanmag.com\/fr\/wp-json\/wp\/v2\/media?parent=4604"}],"wp:term":[{"taxonomy":"product-category","embeddable":true,"href":"https:\/\/www.corvelanmag.com\/fr\/wp-json\/wp\/v2\/product-category?post=4604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}