{"product_id":"precision-thermocouple-amplifiers-with-cold-junction-compensation-temperature-range-25-c-to-400-c","title":"Precision Thermocouple Amplifiers with Cold Junction Compensation – Temperature Range −25°C to +400°C","description":"\u003cp\u003eThis\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eThermocouple Amplifier\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eproject provides a simple, low-cost solution for measuring thermocouple temperature. This board simplifies many of the difficulties of measuring thermocouples output. An integrated temperature sensor performs cold junction compensation. A fixed-gain instrumentation amplifier amplifies the small thermocouple voltage to provide a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5 mV\/°C\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoutput. The high common-mode rejection of the amplifier blocks common-mode noise that the long thermocouple leads can pick up. For additional protection, the high impedance inputs of the amplifier make it easy to add extra filtering. The module can be used as standalone thermometers or as switched output setpoint controllers using either a fixed or remote setpoint control. The module can be powered from a single-ended supply (\u003cstrong\u003eless than 3V\u003c\/strong\u003e) and can measure temperatures below\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0°C\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eby offsetting the reference input. To minimize self-heating, an unloaded\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAD8495\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003etypically operates with a total supply current of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e180 μA\u003c\/strong\u003e, but it is also capable of delivering in excess of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e±5 mA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto a load. The board can be interfaced with K-type (chromel-alumel) thermocouples. With an operating single supply of\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e5V\u003c\/strong\u003e, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5 mV\/°C\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoutput allows the devices to cover nearly 1000 degrees of a thermocouple’s temperature range. The project can also work with 3V supplies, allowing them to interface directly with lower-supply ADCs. They can also work with supplies as large as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e36V\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein industrial systems that require a wide common-mode input range. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAD8495\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecold junction compensation is optimized for operation in a lab environment, where the ambient temperature is around 25°C. The AD8495 is specified for an ambient range of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0°C to 50°C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupply Dual 5V DC (+\/-5V DC)\u003c\/li\u003e\n\u003cli\u003eLow cost and easy to use\u003c\/li\u003e\n\u003cli\u003eMeasurement Temperature Range −25°C to +400°C\u003c\/li\u003e\n\u003cli\u003e±2°C Accuracy Temperature Ranges\u003c\/li\u003e\n\u003cli\u003ePretrimmed for K-type thermocouples\u003c\/li\u003e\n\u003cli\u003eInternal cold junction compensation\u003c\/li\u003e\n\u003cli\u003eHigh-impedance differential input\u003c\/li\u003e\n\u003cli\u003eStandalone 5 mV\/°C thermometer\u003c\/li\u003e\n\u003cli\u003eReference pin allows offset adjustment\u003c\/li\u003e\n\u003cli\u003eMode: Linear, Set Point Controller, Hysteresis on Setpoint Controller, Selection Using Jumpers\u003c\/li\u003e\n\u003cli\u003eThermocouple break detection\u003c\/li\u003e\n\u003cli\u003eOn Board Power LED\u003c\/li\u003e\n\u003cli\u003e4 x 2.5mm Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 31.12 x 27.31mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47201365983404,"sku":"S127","price":26.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/S127.jpg?v=1789374747","url":"https:\/\/dotfry.com\/products\/precision-thermocouple-amplifiers-with-cold-junction-compensation-temperature-range-25-c-to-400-c","provider":"dotfry","version":"1.0","type":"link"}