{"product_id":"1pcs-new-for-mettler-toledo-ajb-005-analog-sensor-weighing-sensor-junction-box","title":"METTLER TOLEDO AJB-005","description":"\u003cdiv class=\"koeed-container\"\u003e\n  \n  \u003ch2 class=\"koeed-h2\"\u003eEngineer's Quick Brief\u003c\/h2\u003e\n  \u003cp\u003eThe \u003cstrong\u003eMETTLER TOLEDO AJB-005\u003c\/strong\u003e is a premium analog load cell junction box engineered to deliver unmatched signal stability for industrial weighing systems. Moving away from traditional, temperature-sensitive potentiometers, it utilizes precision discrete resistors for corner shift adjustment.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZero-Drift Shift Adjustment:\u003c\/strong\u003e Employs gold-plated encoding rotary switches (SMT resistors) instead of trim pots, eliminating thermal drift and vibration-induced resistance changes.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCalFree™ Compatibility:\u003c\/strong\u003e Engineered to be absolutely neutral out of the box with an initial shift error of \u0026lt; 1\/6000, enabling highly accurate test-weight-free calibration.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrimary Application:\u003c\/strong\u003e Ideal for 4-load-cell floor scales, tank\/hopper weighing, and heavy-duty truck scales operating in harsh, high-vibration industrial environments.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2 class=\"koeed-h2\"\u003eProduct Overview: METTLER TOLEDO AJB-005 Analog Junction Box\u003c\/h2\u003e\n  \u003cp\u003eIn high-precision industrial weighing, the integrity of the analog signal from the load cells to the indicator is paramount. The \u003cstrong\u003eMETTLER TOLEDO AJB-005 Analog Junction Box\u003c\/strong\u003e serves as the critical summing hub for up to 4 (or 6, depending on terminal configuration) analog strain gauge load cells. Its standout feature is the \u003cstrong\u003eprecision rotary switch adjustment mechanism\u003c\/strong\u003e, which provides 256 exact steps of shift adjustment without the reliability trade-offs associated with standard multi-turn potentiometers. Housed in a robust enclosure, the AJB-005 ensures that environmental factors like moisture and temperature fluctuations do not compromise your scale's accuracy.\u003c\/p\u003e\n\n  \u003ch2 class=\"koeed-h2\"\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003cp\u003e\u003cem\u003eNote: Data reflects general specifications for the METTLER TOLEDO AJB Precision Junction Box series. Always consult your specific serial number's datasheet for exact hazardous area approvals.\u003c\/em\u003e\u003c\/p\u003e\n  \u003cdiv class=\"koeed-table-wrapper\"\u003e\n    \u003ctable class=\"koeed-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eCategory\u003c\/th\u003e\n          \u003cth\u003eParameter\u003c\/th\u003e\n          \u003cth\u003eSpecification\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eInput \/ Output\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eLoad Cell Connections\u003c\/td\u003e\n          \u003ctd\u003eDesigned for 4-wire or 6-wire analog load cells\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003ePerformance\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eShift Adjustment Method\u003c\/td\u003e\n          \u003ctd\u003eEncoding rotary switches with precision discrete SMT resistors\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003ePerformance\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eAdjustment Steps\u003c\/td\u003e\n          \u003ctd\u003e256 steps (Smallest adjustment step: ~1\/19000)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003ePerformance\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eInitial Error\u003c\/td\u003e\n          \u003ctd\u003e\u0026lt; 1\/6000 (Allows for absolute neutral setting)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eElectrical\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eLoad Cell Resistance Range\u003c\/td\u003e\n          \u003ctd\u003eTypically 120 Ω to 1200 Ω (up to 4000 Ω on extended models)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eEnvironmental\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eProtection Rating\u003c\/td\u003e\n          \u003ctd\u003eIP65 (Standard) \/ IP69K versions available for washdown\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 class=\"koeed-h2\"\u003eIndustrial Application Matrix\u003c\/h2\u003e\n  \u003cdiv class=\"koeed-table-wrapper\"\u003e\n    \u003ctable class=\"koeed-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eIndustry\u003c\/th\u003e\n          \u003cth\u003eSpecific Application\u003c\/th\u003e\n          \u003cth\u003eEngineering Value\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eFood \u0026amp; Beverage\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eBatching and Tank Weighing\u003c\/td\u003e\n          \u003ctd\u003eStable signal transmission even under extreme temperature washdowns, preventing batching errors.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eLogistics \u0026amp; Freight\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eFloor Scales \u0026amp; Truck Scales\u003c\/td\u003e\n          \u003ctd\u003eVibration-resistant rotary switches ensure the corner calibration does not drift from heavy shock loads.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eChemical Manufacturing\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eReactor Vessel Weighing\u003c\/td\u003e\n          \u003ctd\u003eCalFree™ capability allows for scale calibration where applying heavy test weights is physically impossible.\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 class=\"koeed-h2\"\u003eKoeed Engineering Tool: 4-Corner Shift Deviation \u0026amp; Trim Target Calculator\u003c\/h2\u003e\n  \u003cp\u003eWhen calibrating a 4-load-cell platform using an analog junction box like the \u003cstrong\u003eAJB-005\u003c\/strong\u003e, technicians must measure the reading at each corner with a standard test weight. Because passive junction boxes can only \u003cem\u003eattenuate (reduce)\u003c\/em\u003e the signal, you must identify the corner with the lowest reading as your \"Target\" and trim the other corners down to match it. Use this tool to quickly calculate the deviation and identify your trimming strategy.\u003c\/p\u003e\n  \n  \u003cdiv class=\"koeed-tool-box\"\u003e\n    \u003cp style=\"margin-bottom: 10px;\"\u003e\u003cem\u003eEnter the indicated weight when the test mass is placed on each respective corner:\u003c\/em\u003e\u003c\/p\u003e\n    \u003cdiv class=\"koeed-input-group\"\u003e\n      \u003clabel for=\"koeed-c1\"\u003eCorner 1 Reading (kg\/lbs):\u003c\/label\u003e\n      \u003cinput type=\"number\" id=\"koeed-c1\" value=\"100.5\" step=\"0.01\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"koeed-input-group\"\u003e\n      \u003clabel for=\"koeed-c2\"\u003eCorner 2 Reading (kg\/lbs):\u003c\/label\u003e\n      \u003cinput type=\"number\" id=\"koeed-c2\" value=\"100.8\" step=\"0.01\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"koeed-input-group\"\u003e\n      \u003clabel for=\"koeed-c3\"\u003eCorner 3 Reading (kg\/lbs):\u003c\/label\u003e\n      \u003cinput type=\"number\" id=\"koeed-c3\" value=\"99.9\" step=\"0.01\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"koeed-input-group\"\u003e\n      \u003clabel for=\"koeed-c4\"\u003eCorner 4 Reading (kg\/lbs):\u003c\/label\u003e\n      \u003cinput type=\"number\" id=\"koeed-c4\" value=\"100.2\" step=\"0.01\"\u003e\n    \u003c\/div\u003e\n    \u003cbutton class=\"koeed-btn\" onclick=\"koeedCalculateShift()\"\u003eAnalyze Corner Shift\u003c\/button\u003e\n    \n    \u003cdiv id=\"koeed-result\" class=\"koeed-result\"\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 class=\"koeed-h2\"\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdiv class=\"koeed-faq-section\"\u003e\n    \u003ch3 class=\"koeed-h3\"\u003eHow do I perform a corner shift adjustment on the AJB-005 using the rotary switches?\u003c\/h3\u003e\n    \u003cp\u003eUnlike standard J-boxes with trim pots, the AJB uses \u003cstrong\u003ehexadecimal rotary switches (x16 and x1)\u003c\/strong\u003e. To adjust: First, set all switches to the absolute neutral position (typically \"80\"). Apply a test weight to the center and record the reference value. Move the weight to the first corner. Use the \"x16\" switch for coarse adjustments and the \"x1\" switch for fine adjustments until the terminal displays the center reference value. Repeat this process for all corners.\u003c\/p\u003e\n\n    \u003ch3 class=\"koeed-h3\"\u003eWhy is the scale reading drifting even after replacing the junction box?\u003c\/h3\u003e\n    \u003cp\u003eBecause the AJB-005 uses discrete SMT resistors, it is practically immune to the thermal drift that plagues traditional potentiometers. If your scale is drifting, the issue is highly likely outside the junction box. Check for: 1) Moisture ingress in the load cell cables or damaged shielding. 2) Mechanical binding or debris under the scale platform preventing free movement. 3) Ensure the desiccant bag inside the AJB enclosure is fresh and all cord grips are fully tightened.\u003c\/p\u003e\n\n    \u003ch3 class=\"koeed-h3\"\u003eCan I use the AJB-005 with non-Mettler Toledo analog load cells?\u003c\/h3\u003e\n    \u003cp\u003eYes. The AJB series is a universal analog summing box and is compatible with standard strain gauge analog load cells (typically 2mV\/V or 3mV\/V) from any manufacturer, provided their resistance falls within the acceptable range (120 Ω - 1200 Ω).\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3 class=\"koeed-h3\"\u003eCross-Reference \u0026amp; Selection Guide\u003c\/h3\u003e\n  \u003cp\u003eIf you are upgrading an older weighing system, the METTLER TOLEDO AJB series offers several variations based on load cell count and environmental protection. Consider these alternatives:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTraditional Trim-Pot Boxes:\u003c\/strong\u003e If migrating from older brands like Rice Lake or Vishay, the AJB-005 is a direct functional upgrade providing better long-term stability.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMETTLER TOLEDO AJB-006 \/ AJB-008:\u003c\/strong\u003e Designed for systems with 6 or 8 load cells (e.g., long truck scales).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDigital Upgrade (POWERCELL®):\u003c\/strong\u003e If analog noise remains an issue, consider upgrading the entire system to Mettler Toledo's digital POWERCELL® PDX® load cell network, which eliminates the analog junction box entirely.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n  .koeed-container {\n    font-family: inherit;\n    width: 100%;\n    color: #333;\n    line-height: 1.6;\n    box-sizing: border-box;\n  }\n  .koeed-h2 {\n    color: #16c8c8;\n    font-size: 1.5rem;\n    border-bottom: 2px solid #16c8c8;\n    padding-bottom: 0.5rem;\n    margin-top: 2.5rem;\n    margin-bottom: 1rem;\n  }\n  .koeed-h3 {\n    color: #16c8c8;\n    font-size: 1.25rem;\n    margin-top: 1.5rem;\n    margin-bottom: 0.75rem;\n  }\n  .koeed-container p {\n    margin-bottom: 1rem;\n  }\n  .koeed-container ul {\n    margin-bottom: 1.5rem;\n    padding-left: 1.5rem;\n  }\n  .koeed-container li {\n    margin-bottom: 0.5rem;\n  }\n  .koeed-table-wrapper {\n    overflow-x: auto;\n    margin-top: 1rem;\n    margin-bottom: 1.5rem;\n  }\n  .koeed-table {\n    width: 100%;\n    border-collapse: collapse;\n    text-align: left;\n    min-width: 600px;\n  }\n  .koeed-table th {\n    background-color: #16c8c8;\n    color: white;\n    padding: 12px;\n    font-weight: bold;\n  }\n  .koeed-table tr:nth-child(even) {\n    background-color: #fafafa;\n  }\n  .koeed-table tr:nth-child(odd) {\n    background-color: #f4fcfc;\n  }\n  .koeed-table td {\n    padding: 12px;\n    border: 1px solid #eeeeee;\n  }\n  .koeed-tool-box {\n    background: #f4fcfc;\n    border: 1px solid #16c8c8;\n    padding: 1.5rem;\n    border-radius: 8px;\n    margin-top: 1.5rem;\n    margin-bottom: 1.5rem;\n  }\n  .koeed-input-group {\n    margin-bottom: 1rem;\n  }\n  .koeed-input-group label {\n    display: inline-block;\n    width: 220px;\n    font-weight: bold;\n    color: #222;\n  }\n  .koeed-input-group input {\n    width: 150px;\n    padding: 8px;\n    box-sizing: border-box;\n    border: 1px solid #ccc;\n    border-radius: 4px;\n    font-size: 1rem;\n  }\n  .koeed-btn {\n    background: #16c8c8;\n    color: white;\n    border: none;\n    padding: 12px 24px;\n    cursor: pointer;\n    border-radius: 4px;\n    font-weight: bold;\n    font-size: 1rem;\n    margin-top: 10px;\n    transition: background 0.3s ease;\n  }\n  .koeed-btn:hover {\n    background: #12a6a6;\n  }\n  .koeed-result {\n    margin-top: 1.5rem;\n    font-size: 1rem;\n    padding: 1rem;\n    border-radius: 4px;\n    display: none;\n    border-left: 5px solid #16c8c8;\n    background: #fff;\n  }\n\u003c\/style\u003e\n\n\u003cscript\u003e\n  function koeedCalculateShift() {\n    const c1 = parseFloat(document.getElementById('koeed-c1').value);\n    const c2 = parseFloat(document.getElementById('koeed-c2').value);\n    const c3 = parseFloat(document.getElementById('koeed-c3').value);\n    const c4 = parseFloat(document.getElementById('koeed-c4').value);\n    const resultBox = document.getElementById('koeed-result');\n\n    if (isNaN(c1) || isNaN(c2) || isNaN(c3) || isNaN(c4) || c1\u003c=0 || c2\u003c=0 || c3\u003c=0 || c4\u003c=0) {\n      resultBox.style.display = 'block';\n      resultBox.style.borderLeftColor = '#ff4444';\n      resultBox.innerHTML = '\u003cspan style=\"color:#aa0000;\"\u003ePlease enter valid, positive weight readings for all 4 corners.\u003c\/span\u003e';\n      return;\n    }\n\n    const readings = [\n      { id: 'Corner 1', val: c1 },\n      { id: 'Corner 2', val: c2 },\n      { id: 'Corner 3', val: c3 },\n      { id: 'Corner 4', val: c4 }\n    ];\n\n    \/\/ Find the minimum value (The Target)\n    let minCorner = readings[0];\n    let maxCorner = readings[0];\n    \n    for (let i = 1; i \u003c readings.length; i++) {\n      if (readings[i].val \u003c minCorner.val) minCorner = readings[i];\n      if (readings[i].val \u003e maxCorner.val) maxCorner = readings[i];\n    }\n\n    const maxErrorPercent = ((maxCorner.val - minCorner.val) \/ minCorner.val) * 100;\n\n    let outputHtml = `\u003cstrong\u003eDiagnostic Results:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e`;\n    outputHtml += `🎯 \u003cstrong\u003eTarget Corner (Lowest Reading):\u003c\/strong\u003e ${minCorner.id} at ${minCorner.val.toFixed(2)}\u003cbr\u003e`;\n    outputHtml += `\u003cem\u003eNote: Passive junction boxes can only add resistance to reduce signals. You must leave the switch for ${minCorner.id} at the neutral max position and trim the other corners down to match it.\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e`;\n    \n    outputHtml += `\u003cstrong\u003eTrimming Instructions (Target = ${minCorner.val.toFixed(2)}):\u003c\/strong\u003e\u003cul\u003e`;\n    \n    readings.forEach(corner =\u003e {\n      if (corner.id === minCorner.id) {\n        outputHtml += `\u003cli\u003e\u003cstrong\u003e${corner.id}:\u003c\/strong\u003e Do not trim. Leave switches at neutral.\u003c\/li\u003e`;\n      } else {\n        const diff = corner.val - minCorner.val;\n        outputHtml += `\u003cli\u003e\u003cstrong\u003e${corner.id}:\u003c\/strong\u003e Needs to be trimmed down by \u003cstrong\u003e${diff.toFixed(2)}\u003c\/strong\u003e to match the target.\u003c\/li\u003e`;\n      }\n    });\n    \n    outputHtml += `\u003c\/ul\u003e\u003cbr\u003eMaximum Corner Error Before Trimming: \u003cstrong\u003e${maxErrorPercent.toFixed(3)}%\u003c\/strong\u003e`;\n\n    resultBox.style.display = 'block';\n    resultBox.style.borderLeftColor = '#16c8c8';\n    resultBox.innerHTML = outputHtml;\n  }\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"FAQPage\",\n      \"mainEntity\": [\n        {\n          \"@type\": \"Question\",\n          \"name\": \"How do I perform a corner shift adjustment on the AJB-005 using the rotary switches?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Unlike standard J-boxes with trim pots, the AJB uses hexadecimal rotary switches (x16 and x1). To adjust: First, set all switches to the absolute neutral position (typically 80). Apply a test weight to the center and record the reference value. Move the weight to a corner. Use the x16 switch for coarse adjustments and the x1 switch for fine adjustments until the display matches the center reference. Repeat for all corners.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Why is the scale reading drifting even after replacing the junction box?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"The AJB-005 uses discrete SMT resistors and is practically immune to thermal drift. If your scale is drifting, check for moisture ingress in the load cell cables, mechanical binding under the platform, or ensure the desiccant bag inside the AJB enclosure is fresh.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Can I use the AJB-005 with non-Mettler Toledo analog load cells?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Yes. 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