{"product_id":"thermocouple-j-type-sheath","title":"Thermocouple, J type, Sheath","description":"\u003cdiv class=\"short-description\"\u003e Sheath thermocouple have shielded thermocouple wire of common length 500mm and sheath diameter Ф3~Φ8mm, with flexibility, high pressure resistant, fast thermal response time and long operating life. J type thermocouple can directly measure the temperature of liquid, vapor, gas medium and solid surface in the range of 0~600 ℃ in various production processes, especially in vacuum, oxidation, reduction or inert atmosphere.\u003c\/div\u003e\n\u003cdiv class=\"short-description\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"short-description\"\u003e\n\u003cp\u003eAs a temperature sensor, thermocouple is usually used with display instruments, recording instruments and signal conditioners. Sheath thermocouple also can be used as a temperature sensing element for assembly thermocouple.\u003c\/p\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1. S\/E\/K\/J\/T type thermocouple temperature range and accuracy chart\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable cellpadding=\"5\" cellspacing=\"0\" width=\"100%\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003eCategory\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003eType of sensing element\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003eSheath diameter\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003eNormal working temperature\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003eHighest working temperature\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eAllowable deviation Δt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring range\u003c\/td\u003e\n\u003ctd\u003ePermissible deviation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlatinum Rhodium 10 - Platinum\u003c\/td\u003e\n\u003ctd\u003eS type\u003c\/td\u003e\n\u003ctd\u003e≥Φ3mm\u003c\/td\u003e\n\u003ctd\u003e1100℃\u003c\/td\u003e\n\u003ctd\u003e1300℃\u003c\/td\u003e\n\u003ctd\u003e0~1300℃\u003c\/td\u003e\n\u003ctd\u003e±2.5℃ or ±0.75%t\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNickelchromium - Copper nickel\u003c\/td\u003e\n\u003ctd\u003eE type\u003c\/td\u003e\n\u003ctd\u003e≥Φ3mm\u003c\/td\u003e\n\u003ctd\u003e600℃\u003c\/td\u003e\n\u003ctd\u003e700℃\u003c\/td\u003e\n\u003ctd\u003e0~700℃\u003c\/td\u003e\n\u003ctd\u003e±2.5℃ or ±0.75%t\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNickel chromium - Nickel silicon\u003c\/td\u003e\n\u003ctd\u003eK type\u003c\/td\u003e\n\u003ctd\u003e≥Φ3mm\u003c\/td\u003e\n\u003ctd\u003e800℃\u003c\/td\u003e\n\u003ctd\u003e950℃\u003c\/td\u003e\n\u003ctd\u003e0~900℃\u003c\/td\u003e\n\u003ctd\u003e±2.5℃ or ±0.75%t\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIron - constantan\u003c\/td\u003e\n\u003ctd\u003eJ type\u003c\/td\u003e\n\u003ctd\u003e≥Φ3mm\u003c\/td\u003e\n\u003ctd\u003e500℃\u003c\/td\u003e\n\u003ctd\u003e600℃\u003c\/td\u003e\n\u003ctd\u003e0~600℃\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003eCopper - Copper nickel\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003e\u003ca href=\"https:\/\/www.ato.com\/thermocouple-t-type-sheath\"\u003eT type\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003e≥Φ3mm\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003e350℃\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003e400℃\u003c\/td\u003e\n\u003ctd\u003e＜-200℃\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-40~350℃\u003c\/td\u003e\n\u003ctd\u003e±1.0℃ or ±0.75%t\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e2. Thermal response time of thermocouple\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable cellpadding=\"5\" cellspacing=\"0\" width=\"100%\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003eSheath diameter (mm)\u003cbr\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eThermal response time (s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShell type\u003c\/td\u003e\n\u003ctd\u003eInsulation type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003ctd\u003e0.4\u003c\/td\u003e\n\u003ctd\u003e0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e0.6\u003c\/td\u003e\n\u003ctd\u003e1.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4.0\u003c\/td\u003e\n\u003ctd\u003e0.8\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0\u003c\/td\u003e\n\u003ctd\u003e1.2\u003c\/td\u003e\n\u003ctd\u003e4.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6.0\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003ctd\u003e6.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8.0\u003c\/td\u003e\n\u003ctd\u003e4.0\u003c\/td\u003e\n\u003ctd\u003e8.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e3. Thermocouple wire structure chart\u003c\/strong\u003e\u003cbr\u003e\u003cimg height=\"191\" width=\"680\" alt=\"Thermocouple wire structure chart\" src=\"https:\/\/www.ato.com\/Content\/Images\/uploaded\/thermocouple-wire-structure-chart.jpg\"\u003e\u003cbr\u003e\u003cstrong\u003e4. Selection chart\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable cellpadding=\"5\" cellspacing=\"0\" width=\"100%\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBranch number\u003c\/td\u003e\n\u003ctd\u003eInstalling form\u003c\/td\u003e\n\u003ctd\u003eMode of connection\u003c\/td\u003e\n\u003ctd\u003eWorking end form\u003c\/td\u003e\n\u003ctd\u003eMultipoint type\u003c\/td\u003e\n\u003ctd\u003eAdditional device\u003c\/td\u003e\n\u003ctd\u003eSheath diameter\u003c\/td\u003e\n\u003ctd\u003eSheath length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB1: Single branch;\u003cbr\u003eB2: Double branch\u003c\/td\u003e\n\u003ctd\u003eI1: No fixed device;\u003cbr\u003eI2: Fixed card sets of thread joint;\u003cbr\u003eI3: Movable card sets of thread joint;\u003cbr\u003eI4: Fixed card sets of flange;\u003cbr\u003eI5: Movable card sets of flange\u003c\/td\u003e\n\u003ctd\u003eC0: Simple terminals;\u003cbr\u003eC3: Standard waterproof protection head;\u003cbr\u003eC4: Explosion-proof protection head;\u003cbr\u003eC5: Standard plug;\u003cbr\u003eC6: Aviation plug;\u003cbr\u003eC7: Handheld;\u003cbr\u003eC8: Small waterproof protection head;\u003cbr\u003eC9: Direct lead wire\u003c\/td\u003e\n\u003ctd\u003eW1: Insulation type;\u003cbr\u003eW2: Shell type;\u003cbr\u003eW3: Open end type\u003c\/td\u003e\n\u003ctd\u003eM3: 3 points;\u003cbr\u003eM4: 4 points;\u003cbr\u003eM5: 5 points;\u003cbr\u003eM6: 6 points\u003c\/td\u003e\n\u003ctd\u003eS: Sanitary chuck;\u003cbr\u003eH: Heat collector\u003c\/td\u003e\n\u003ctd\u003eD3: Φ3;\u003cbr\u003eD4: Φ4;\u003cbr\u003eD5: Φ5;\u003cbr\u003eD6: Φ6;\u003cbr\u003eD8: Φ8\u003c\/td\u003e\n\u003ctd\u003eΦ3: 50~15000mm;\u003cbr\u003eΦ4: 50~10000mm;\u003cbr\u003eΦ5: 50~4000mm;\u003cbr\u003eΦ6: 50~2000mm;\u003cbr\u003eΦ8: 50~1000mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e5. Thermocouple installation diagram\u003c\/strong\u003e\u003cbr\u003e\u003cimg height=\"653\" width=\"780\" alt=\"Thermocouple installation diagram\" src=\"https:\/\/www.ato.com\/Content\/Images\/uploaded\/thermocouple-installation-diagram.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eFeature\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Mechanical Strength:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStrong structure with good pressure resistance, suitable for harsh industrial environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Installation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCan be bent for curved or space-limited mounting scenarios, enhancing installation convenience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Measurement Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSheath thermocouple suitable for various temperature ranges in industrial and laboratory use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Thermal Response:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMinimizes dynamic error with rapid response to temperature changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeak-Proof Insulated Connector:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDesigned with anti-electric-leakage plastic molding, crafted through multiple precise processes for safety and reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Plastic Components:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eQuality plastic materials offer durability and insulation.\u003cbr\u003eComfortable Handle Design: Ergonomically shaped grip for safe and easy handling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTips: How to prevent interference for thermocouple?\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eIsolation\u003cbr\u003eIsolation method is to hang thermocouple in the air to isolate thermocouple from refractory brick of furnace wall, and thermocouple is also isolated from support by use of insulation object. The method can prevent interference of high temperature electric leakage.\u003c\/li\u003e\n\u003cli\u003eShielding\u003cbr\u003eShielding method is to make extension wire of thermocouple pass through iron tube or other metal shields to isolate. In this way, it can prevent electromagnetic interference and interference of high voltage electric field. When using this method, iron tube and shields should be connected with the ground well and twist the extension wire as well.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGround connection\u003cbr\u003eThis method has two forms: The first is to connect the reference end of thermocouple with the ground, and second is to connect the measurement end of thermocouple with the ground.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e","brand":"IndustriElectric","offers":[{"title":"Default Title","offer_id":43588828463239,"sku":null,"price":137.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/2818\/0615\/files\/Screenshot2025-12-10192743.png?v=1765416496","url":"https:\/\/industrielectric.com\/products\/thermocouple-j-type-sheath","provider":"IndustriElectric","version":"1.0","type":"link"}