MAX6675 Module + K Type Thermocouple Sensor Measure 1024°C Temperature

This MAX6675 Module + K Type Thermocouple Sensor Measure 1024°C Temperature sensor makes use of the Maxim MAX6675 K-Thermocouple to digital converter IC to provide a microcontroller compatible digital serial interface (SPI compatible) for giving an accurate temperature compensated measurement of the supplied K-Type thermocouple sensor.

It has a 12-bit resolution providing temperature readings from 0°C to 1024°C (max temperature of the supplied sensor is 450°C) with a resolution of 0.25°C.

Screw terminals allow for connection to the thermocouples spade connectors and a 5 pin standard 0.1″ header provides an interface to a microcontroller such as an Arduino development board.

Supplied thermocouple sensor has a diameter of 4.5mm with a 6mm threaded mounting bolt. The total length of the sensor including cable and spade connectors is ~50cm.

Features 

• Internal integrated cold junction compensation circuit;
• Temperature signal can be converted into 12-bit digital
• Embedded thermocouple break detection circuitry.
• K-type temperature probe
• Simple SPI serial output temperature.
• High impedance differential inputs.
• Thermocouple break detection.
• 2000V of ESD signal.

Connect your Arduino to the Thermocouple Module

Pretty simple stuff.   Keep the note about the thermocouple polarity in mind as you make these connections.

Copy and Paste the Arduino MAX6675 Sketch:

// Sample Arduino MAX6675 Arduino Sketch

#include "max6675.h"

int ktcSO = 8;
int ktcCS = 9;
int ktcCLK = 10;

MAX6675 ktc(ktcCLK, ktcCS, ktcSO);

  
void setup() {
  Serial.begin(9600);
  // give the MAX a little time to settle
  delay(500);
}

void loop() {
  // basic readout test
  
   Serial.print("Deg C = "); 
   Serial.print(ktc.readCelsius());
   Serial.print("t Deg F = ");
   Serial.println(ktc.readFahrenheit());
 
   delay(500);
}

If you are unfamiliar with installing Arduino libraries, you can read this page.