{"product_id":"type-k-thermocouple-sensor-amplifier-arduino-shield","title":"Type K Thermocouple Sensor Amplifier Arduino Shield","description":"\u003cp\u003eThis is a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eType K Thermocouple\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSensor Amplifier Arduino Shield that enables an Arduino board to acquire temperatures from a thermocouple of type K. The shield works with a single supply and takes 5V DC from the Arduino board, the output of the circuit is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0 to 4V DC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor 0-degree centigrade to 400C. The output of the amplifier is connected to the A0 analog pin of Arduino. A typical application of thermocouples is in boilers, soldering stations, and heaters. Also, 3D printers rely on thermocouples to measure the extruder temperature.\u003c\/p\u003e\n\u003cp\u003eThe K thermocouple has usually two wires, made of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAlumel\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eChromel\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethat need to be connected with special care: no solder, just use a mechanical connection, therefore it is advisable to use special connectors available for thermocouples.\u003c\/p\u003e\n\u003cp\u003eThe circuit is built using\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLTC1049\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eop-amp and Thermocouple Cold Junction Compensator chip\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLTC1025.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe board also supports other sensors like Type E, J, R, S, and T, however I have tested this circuit with Type K Sensor, jumpers are provided to use, and select other types of sensors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe LTC1049\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high performance, low power zero-drift operational amplifier. The two sample-and-hold capacitors usually required externally by other chopper stabilized amplifiers are integrated on the chip. Further, the LTC1049 offers superior DC and AC performance with a nominal supply current of only 200μA. The LTC1049 has a typical offset voltage of 2μV, drift of 0.02μV\/°C, 0.1Hz to 10Hz input noise voltage of 3μVP-P and typical voltage gain of 160dB. The slew rate is 0.8V\/μs with a gain-bandwidth product of 0.8MHz.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe LT®1025\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a micropower thermocouple cold junction compensator for use with type E, J, K, R, S, and T thermocouples. It utilizes wafer level and post-package trimming to achieve 0.5°C initial accuracy. Special curvature correction circuitry is used to match the “bow” found in all thermocouples so that accurate cold junction compensation is maintained over a wider temperature range. The LT1025 will operate with a supply voltage from 4V to 36V. The typical supply current is 80mA, resulting in less than 0.1°C internal temperature rise for supply voltages under 10V. A 10mV\/°C output is available at low impedance, in addition to the direct thermocouple voltages of 60.9mV\/°C (E), 51.7mV\/°C (J), 40.3mV\/°C (K, T) and 5.95mV\/°C (R, S). All outputs are essentially independent of power supply voltage\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003eNote:\u003c\/span\u003e Sensor Not Included (Sensor Purchase Separately) \u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupply 5V DC\u003c\/li\u003e\n\u003cli\u003eThermocouple Sensor: Type K\u003c\/li\u003e\n\u003cli\u003eOutput 0 to 4V DC\u003c\/li\u003e\n\u003cli\u003eTemperature Sensing range 0 to 400 Degree Centigrade\u003c\/li\u003e\n\u003cli\u003ePCB dimensions: 31.75 x 51.12mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47196893610156,"sku":"S123","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/S123B.jpg?v=1789289026","url":"https:\/\/dotfry.com\/products\/type-k-thermocouple-sensor-amplifier-arduino-shield","provider":"dotfry","version":"1.0","type":"link"}