{"product_id":"10pcs-pack-new-for-strain-gauge-fr-1a12l50w05ms","title":"10pcs\/pack Strain Gauge FR-1A12L50W05MS for Precision Measurement","description":"\u003cstyle\u003e\n  \/* Koeed Namespace CSS - Strictly isolated for Shopify integration *\/\n  .koeed-container {\n    width: 100%;\n    font-family: inherit;\n    line-height: 1.6;\n    color: #333333;\n  }\n  .koeed-heading {\n    color: #16c8c8;\n    font-size: 1.5rem;\n    font-weight: bold;\n    margin-top: 2rem;\n    margin-bottom: 1rem;\n    border-bottom: 2px solid #16c8c8;\n    padding-bottom: 0.5rem;\n  }\n  .koeed-subheading {\n    color: #16c8c8;\n    font-size: 1.25rem;\n    font-weight: 600;\n    margin-top: 1.5rem;\n    margin-bottom: 0.75rem;\n  }\n  .koeed-brief-list {\n    list-style-type: disc;\n    padding-left: 1.5rem;\n    margin-bottom: 1.5rem;\n  }\n  .koeed-brief-list li {\n    margin-bottom: 0.5rem;\n  }\n  .koeed-table-wrapper {\n    overflow-x: auto;\n    width: 100%;\n    margin-bottom: 1.5rem;\n  }\n  .koeed-tech-table {\n    width: 100%;\n    border-collapse: collapse;\n    text-align: left;\n    font-size: 0.95rem;\n  }\n  .koeed-tech-table th, .koeed-tech-table td {\n    border: 1px solid #eeeeee;\n    padding: 12px 15px;\n  }\n  .koeed-tech-table th {\n    background-color: #16c8c8;\n    color: #ffffff;\n    font-weight: 600;\n  }\n  .koeed-tech-table tr:nth-child(even) {\n    background-color: #f4fcfc;\n  }\n  .koeed-tech-table tr:nth-child(odd) {\n    background-color: #fafafa;\n  }\n  .koeed-tool-box {\n    background-color: #f4fcfc;\n    border: 1px solid #16c8c8;\n    border-radius: 8px;\n    padding: 1.5rem;\n    margin: 2rem 0;\n  }\n  .koeed-form-group {\n    margin-bottom: 1rem;\n  }\n  .koeed-form-group label {\n    display: block;\n    font-weight: 600;\n    margin-bottom: 0.5rem;\n    color: #333333;\n  }\n  .koeed-form-group input, .koeed-form-group select {\n    width: 100%;\n    padding: 0.75rem;\n    border: 1px solid #cccccc;\n    border-radius: 4px;\n    font-family: inherit;\n    background-color: #ffffff;\n  }\n  .koeed-btn {\n    background-color: #16c8c8;\n    color: #ffffff;\n    border: none;\n    padding: 0.75rem 1.5rem;\n    font-size: 1rem;\n    font-weight: bold;\n    border-radius: 4px;\n    cursor: pointer;\n    transition: background-color 0.3s ease;\n  }\n  .koeed-btn:hover {\n    background-color: #12a6a6;\n  }\n  .koeed-result-box {\n    margin-top: 1.5rem;\n    padding: 1rem;\n    background-color: #ffffff;\n    border-left: 4px solid #16c8c8;\n  }\n  .koeed-faq-item {\n    margin-bottom: 1.25rem;\n  }\n  .koeed-faq-question {\n    font-weight: bold;\n    color: #333333;\n    margin-bottom: 0.25rem;\n  }\n  .koeed-faq-answer {\n    color: #555555;\n  }\n  .koeed-alert {\n    background-color: #fff4e5;\n    border-left: 4px solid #ff9800;\n    padding: 1rem;\n    margin: 1rem 0;\n    font-size: 0.95rem;\n    color: #663c00;\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"koeed-container\"\u003e\n\n  \u003c!-- 1. Engineer's Quick Brief --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eAt a Glance: FR Series Strain Gauges\u003c\/h2\u003e\n  \u003cul class=\"koeed-brief-list\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision Foil Technology:\u003c\/strong\u003e Utilizes an advanced etched foil grid on a highly stable polymer backing, ensuring excellent linearity and low hysteresis for critical static and dynamic stress analysis.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBulk Operational Efficiency:\u003c\/strong\u003e Packaged in a convenient \u003cstrong\u003e10-Piece Pack\u003c\/strong\u003e, providing R\u0026amp;D labs and load cell manufacturers with a cost-effective, batch-consistent supply for multi-point strain rosettes or bridge configurations.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrimary Application Focus:\u003c\/strong\u003e Widely deployed in \u003cstrong\u003eStructural Health Monitoring (SHM)\u003c\/strong\u003e, experimental mechanics, material fatigue testing, and custom OEM force\/pressure transducer manufacturing.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- 2. SEO Introduction --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eProduct Overview\u003c\/h2\u003e\n  \u003cp\u003eThe \u003cstrong\u003eFR-1A12L50W05MS Strain Gauge (10pcs\/pack)\u003c\/strong\u003e is a critical analog sensing component designed for precision stress measurement and force transducer construction. By securely bonding these foil strain gauges to a test material (such as steel, aluminum, or composites), microscopic mechanical deformations are linearly converted into measurable changes in electrical resistance. This batch-consistent pack is essential for engineers constructing Quarter, Half, or Full Wheatstone bridge circuits. Designed with pre-attached lead wires (verify specific batch configuration) and a resilient encapsulation, the FR series offers reliable long-term stability in harsh industrial and laboratory environments.\u003c\/p\u003e\n\n  \u003c!-- 3. Technical Specifications --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eTechnical Specifications\u003c\/h2\u003e\n  \n  \u003cdiv class=\"koeed-alert\"\u003e\n    \u003cstrong\u003eEngineering Verification Note:\u003c\/strong\u003e Key parameters such as Nominal Resistance (typically 120Ω or 350Ω) and the exact Gauge Factor (GF, usually ~2.0 to 2.1) vary by specific manufacturing batch. You \u003cstrong\u003eMUST\u003c\/strong\u003e refer to the calibration data sheet included inside your specific package before calibrating your data acquisition (DAQ) system or amplifier.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"koeed-table-wrapper\"\u003e\n    \u003ctable class=\"koeed-tech-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSpecification Parameter\u003c\/th\u003e\n          \u003cth\u003eDescription \/ Typical Range\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eItem Category\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eFoil Strain Gauge \/ Resistance Strain Gauge\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eModel Series\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eFR-1A12L50W05MS\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e10 Pieces per Pack\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eMeasurement Type\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eLinear Strain (Uniaxial)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eNominal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e\n\u003cem\u003eVerify Batch Label\u003c\/em\u003e (Commonly 120 Ω or 350 Ω)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eGauge Factor (GF)\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e\n\u003cem\u003eVerify Batch Label\u003c\/em\u003e (Typically 2.0 to 2.15)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eBacking Material\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003ePolyimide \/ Phenolic resin (Flexible and temperature stable)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eConnection Type\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003ePre-wired Leads (Varies, commonly 2-wire or 3-wire for temp compensation)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eApplication Method\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eRequires specialized strain gauge adhesive (e.g., Cyanoacrylate or Epoxy)\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- 4. Application Matrix --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eIndustrial Application Matrix\u003c\/h2\u003e\n  \u003cp\u003eThe high sensitivity of foil strain gauges makes them the foundation of modern load sensing:\u003c\/p\u003e\n  \u003cul class=\"koeed-brief-list\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLoad Cell Manufacturing:\u003c\/strong\u003e Glued in a Full-Bridge configuration to CNC-machined aluminum or steel spring elements to create precision scales and industrial weighing systems.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStructural Health Monitoring (SHM):\u003c\/strong\u003e Permanently bonded to bridge girders, aircraft wings, and pressure vessels to monitor real-time fatigue and yield stress over time.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRobotics \u0026amp; Automation:\u003c\/strong\u003e Used in multi-axis force-torque sensors at robotic joints for sensitive haptic feedback and collision detection.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- 5. Koeed B2B Tool: Wheatstone Bridge Calculator --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eKoeed Strain Gauge Bridge Output Calculator\u003c\/h2\u003e\n  \u003cp\u003eWhen connecting your strain gauge to a Data Acquisition (DAQ) system or signal amplifier, you need to anticipate the raw voltage output. Use this tool to calculate the expected signal output in millivolts (mV) based on your specific Gauge Factor (GF) and applied microstrain (µε).\u003c\/p\u003e\n  \n  \u003cnoscript\u003e\n    \u003cp\u003e\u003cem\u003ePlease enable JavaScript in your browser to use the interactive Strain Gauge Calculator.\u003c\/em\u003e\u003c\/p\u003e\n  \u003c\/noscript\u003e\n\n  \u003cdiv class=\"koeed-tool-box\" id=\"koeed-strain-tool\"\u003e\n    \u003cdiv class=\"koeed-form-group\"\u003e\n      \u003clabel for=\"koeed-bridge-type\"\u003eBridge Configuration:\u003c\/label\u003e\n      \u003cselect id=\"koeed-bridge-type\"\u003e\n        \u003coption value=\"0.25\"\u003eQuarter Bridge (1 Active Gauge)\u003c\/option\u003e\n        \u003coption value=\"0.5\"\u003eHalf Bridge (2 Active Gauges - push\/pull)\u003c\/option\u003e\n        \u003coption value=\"1.0\"\u003eFull Bridge (4 Active Gauges)\u003c\/option\u003e\n      \u003c\/select\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"koeed-form-group\"\u003e\n      \u003clabel for=\"koeed-gf-input\"\u003eGauge Factor (GF):\u003c\/label\u003e\n      \u003cinput type=\"number\" id=\"koeed-gf-input\" value=\"2.05\" step=\"0.01\" placeholder=\"e.g., 2.05 (Check package label)\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"koeed-form-group\"\u003e\n      \u003clabel for=\"koeed-vex-input\"\u003eExcitation Voltage (Vex) in Volts:\u003c\/label\u003e\n      \u003cinput type=\"number\" id=\"koeed-vex-input\" value=\"5.0\" step=\"0.1\" placeholder=\"e.g., 5.0 or 10.0\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"koeed-form-group\"\u003e\n      \u003clabel for=\"koeed-microstrain-input\"\u003eExpected Applied Microstrain (µε):\u003c\/label\u003e\n      \u003cinput type=\"number\" id=\"koeed-microstrain-input\" value=\"1000\" placeholder=\"e.g., 1000 (1000 µε = 0.1% strain)\"\u003e\n    \u003c\/div\u003e\n    \n    \u003cbutton class=\"koeed-btn\" onclick=\"koeedCalcStrainOutput()\"\u003eCalculate Output Signal (mV)\u003c\/button\u003e\n    \n    \u003cdiv class=\"koeed-result-box\" id=\"koeed-strain-result\" style=\"display: none;\"\u003e\n      \u003c!-- Results will be injected here via JS --\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- 6. Troubleshooting \u0026 FAQ --\u003e\n  \u003ch2 class=\"koeed-heading\"\u003eInstallation \u0026amp; Troubleshooting FAQ\u003c\/h2\u003e\n  \n  \u003cdiv class=\"koeed-faq-item\"\u003e\n    \u003cdiv class=\"koeed-faq-question\"\u003e1. Why is the strain gauge output drifting continuously without any physical load applied?\u003c\/div\u003e\n    \u003cdiv class=\"koeed-faq-answer\"\u003eZero-drift is typically caused by two factors: temperature changes or poor adhesive bonding. If the ambient temperature fluctuates, the metal expands\/contracts, altering the resistance. Using a \u003cstrong\u003e3-wire quarter-bridge setup\u003c\/strong\u003e or a half\/full bridge can compensate for thermal effects. Alternatively, if the adhesive layer has bubbles or is improperly cured, the gauge will slowly \"creep\" over time.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"koeed-faq-item\"\u003e\n    \u003cdiv class=\"koeed-faq-question\"\u003e2. How clean does the surface need to be before gluing the strain gauge?\u003c\/div\u003e\n    \u003cdiv class=\"koeed-faq-answer\"\u003eThe surface must be surgically clean. Standard practice involves removing all paint and oxidation using abrasive paper (e.g., 220 to 400 grit in a cross-hatch pattern), followed by chemical degreasing using industrial solvents (like Acetone or specialized condition liquids). Any oils (even from a fingerprint) will compromise the bond and lead to inaccurate strain transfer.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"koeed-faq-item\"\u003e\n    \u003cdiv class=\"koeed-faq-question\"\u003e3. What is the difference between a 120-ohm and a 350-ohm strain gauge?\u003c\/div\u003e\n    \u003cdiv class=\"koeed-faq-answer\"\u003eBoth function identically in principle, but a 350-ohm gauge generates less internal heat (lower $I^2R$ power dissipation) for a given excitation voltage, reducing thermally-induced drift, especially on materials with poor thermal conductivity like plastics. 120-ohm gauges are the legacy standard for general purpose metal testing.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- 7. Cross-Reference \u0026 Selection --\u003e\n  \u003ch3 class=\"koeed-subheading\"\u003eCross-Reference Guide\u003c\/h3\u003e\n  \u003cp\u003eFor research labs or OEM production lines standardizing their measurement components, the FR series represents a highly functional equivalent to standard linear foil gauges from premier global manufacturers:\u003c\/p\u003e\n  \u003cul class=\"koeed-brief-list\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVishay Micro-Measurements (VMM):\u003c\/strong\u003e EA-Series (General Purpose Polyimide Strain Gauges).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHBM (Hottinger Baldwin Messtechnik):\u003c\/strong\u003e Y-Series (Standard Foil Strain Gauges).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKyowa Electronic Instruments:\u003c\/strong\u003e KFG Series (General-purpose Foil Strain Gages).\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- Interactive Tool JavaScript --\u003e\n\u003cscript\u003e\n  function koeedCalcStrainOutput() {\n    var bridgeFactor = parseFloat(document.getElementById('koeed-bridge-type').value);\n    var gf = parseFloat(document.getElementById('koeed-gf-input').value);\n    var vex = parseFloat(document.getElementById('koeed-vex-input').value);\n    var microstrain = parseFloat(document.getElementById('koeed-microstrain-input').value);\n    var resultBox = document.getElementById('koeed-strain-result');\n    \n    if (isNaN(gf) || isNaN(vex) || isNaN(microstrain) || gf \u003c= 0 || vex \u003c= 0) {\n      resultBox.style.display = 'block';\n      resultBox.innerHTML = '\u003cstrong\u003eError:\u003c\/strong\u003e Please enter valid positive numbers for Gauge Factor and Excitation Voltage.';\n      return;\n    }\n\n    \/\/ Mathematical Calculation:\n    \/\/ Strain (ε) = microstrain * 10^-6\n    \/\/ Output Voltage (Vout) for a Quarter Bridge ≈ Vex * (GF * ε) \/ 4\n    \/\/ Using bridgeFactor: 0.25 for Quarter, 0.5 for Half, 1.0 for Full.\n    \/\/ Therefore Vout ≈ Vex * (GF * ε) * bridgeFactor\n    \n    var strain = microstrain \/ 1000000; \/\/ Convert µε to ε\n    var vout_volts = vex * (gf * strain) * bridgeFactor;\n    var vout_mv = vout_volts * 1000; \/\/ Convert to millivolts\n\n    var bridgeText = \"\";\n    if (bridgeFactor === 0.25) bridgeText = \"Quarter Bridge\";\n    if (bridgeFactor === 0.5) bridgeText = \"Half Bridge\";\n    if (bridgeFactor === 1.0) bridgeText = \"Full Bridge\";\n\n    resultBox.style.display = 'block';\n    resultBox.innerHTML = '\u003ch3 style=\"color: #16c8c8; margin-top: 0;\"\u003ePredicted Bridge Output\u003c\/h3\u003e' +\n                          '\u003cp\u003e\u003cstrong\u003eConfiguration:\u003c\/strong\u003e ' + bridgeText + ' @ ' + vex + 'V Excitation\u003c\/p\u003e' +\n                          '\u003cp\u003e\u003cstrong\u003eApplied Strain:\u003c\/strong\u003e ' + microstrain + ' µε\u003c\/p\u003e' +\n                          '\u003cp style=\"font-size: 1.1rem; background-color: #f0f0f0; padding: 15px; border-radius: 4px; border-left: 4px solid #333; margin-top: 10px;\"\u003e' +\n                          '\u003cstrong\u003e\u0026#8627; Theoretical Output Signal (ΔV): \u003cspan style=\"color:#16c8c8;\"\u003e' + vout_mv.toFixed(4) + ' mV\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e' +\n                          '\u003cp style=\"font-size: 0.85rem; color: #555; margin-top: 10px;\"\u003e\u003cem\u003eEngineering Note: This is an idealized linear approximation. Actual output requires calibration and may be affected by lead wire resistance, amplifier offset, and thermal variations. Output is often expressed as \u003cstrong\u003e' + (vout_mv \/ vex).toFixed(4) + ' mV\/V\u003c\/strong\u003e.\u003c\/em\u003e\u003c\/p\u003e';\n  }\n\u003c\/script\u003e\n\n\u003c!-- GEO Structured Data (JSON-LD) --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n[\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Why is the strain gauge output drifting continuously without any physical load applied?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Zero-drift is typically caused by temperature changes or poor adhesive bonding. Using a 3-wire quarter-bridge setup or a half\/full bridge can compensate for thermal effects. Alternatively, if the adhesive layer has bubbles or is improperly cured, the gauge will slowly 'creep' over time.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"How clean does the surface need to be before gluing a strain gauge?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"The surface must be surgically clean. Standard practice involves removing all paint and oxidation using abrasive paper, followed by chemical degreasing using industrial solvents (like Acetone). Any oils will compromise the bond and lead to inaccurate strain transfer.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What is the difference between a 120-ohm and a 350-ohm strain gauge?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Both function identically, but a 350-ohm gauge generates less internal heat for a given excitation voltage, reducing thermally-induced drift, especially on materials with poor thermal conductivity like plastics. 120-ohm gauges are the legacy standard for general purpose metal testing.\"\n        }\n      }\n    ]\n  },\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"WebApplication\",\n    \"name\": \"Koeed Strain Gauge Bridge Output Calculator\",\n    \"url\": \"https:\/\/koeed.com\",\n    \"description\": \"An interactive engineering tool to calculate the theoretical Wheatstone bridge output voltage (in millivolts) for foil strain gauges based on Gauge Factor, Excitation Voltage, applied microstrain, and bridge configuration.\",\n    \"applicationCategory\": \"EngineeringApplication\",\n    \"operatingSystem\": \"All\",\n    \"browserRequirements\": \"Requires JavaScript\"\n  }\n]\n\u003c\/script\u003e","brand":"KOEED","offers":[{"title":"Default Title","offer_id":43969977843897,"sku":"305093184948","price":582.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8476\/7929\/files\/s-l1600_e854f2b8-6177-42c4-9624-33fb7b246f3e.jpg?v=1713391354","url":"https:\/\/koeed.com\/tr\/products\/10pcs-pack-new-for-strain-gauge-fr-1a12l50w05ms","provider":"KOEED","version":"1.0","type":"link"}