README.md

MCP960X - device family of cold-junction compensated thermocouple to digital converter

The MCP960X device family is an I2C interface cold-junction compensated thermocouple to digital converter. Supported thermocouple types (designated by NIST ITS-90) are: K, J, T, N, S, E, B and R. The MCP9600/01 converts the thermocouple EMF to degree Celsius with integrated cold-junction compensation.

Note: Default thermocouple type is K

Sensor Image

Documentation

MCP960X datasheet

Usage

The sample reads two temperatures. One is a connected thermocouple reading which can be read using the GetTemperature command and the other is the temperature of the device itself which can be read using the GetColdJunctionTemperature command. The Cold Junction Temperature is used internally to increase the accuracy of the thermocouple.

using System;
using System.Device.I2c;
using System.Threading;
using Iot.Device.Mcp960x;

Console.WriteLine("Write I2C MCP960X - ADR 0x67 - Read ambient and hot junction temperature every 1 sec - Press Ctrl+C to end.");

// set I2C bus ID: 1
// 0x67 is the device address
I2cConnectionSettings settings = new I2cConnectionSettings(1, 0x67);
I2cDevice i2cDevice = I2cDevice.Create(settings);
Mcp960x mcp960x = new Mcp960x(i2cDevice, coldJunctionResolutionType: ColdJunctionResolutionType.N_0_25);

DeviceIDType deviceIDType;
byte major;
byte minor;
mcp960x.ReadDeviceID(out deviceIDType, out major, out minor);
Console.WriteLine($"device id: {(byte)deviceIDType} - major: {major} - minor: {minor}");

while (true)
{
    Console.WriteLine($"ambient temperture: {mcp960x.GetColdJunctionTemperature()}");
    Console.WriteLine($"hot junction temperture: {mcp960x.GetTemperature()}");

    Thread.Sleep(1000);
}