Introduction: Thermocouple Amplifier and K-Type Thermocouple Interface With Arduino
This tutorial teaches the basics on using Thermocouple and Thermocouple Amplifier.
Step 1: Introduction
Thermocouple is used to measure temperature. However, the signal level produced by the thermocouple is very small, thus an amplifier is required to collect the signal produced and amplify the signals. In order to do the amplification job, thermocouple amplifier is specially designed to work with thermocouple.
Specification of Type-K Thermocouple:
- Measurable Temperature Range: 0ᵒC ~ 1100ᵒC
- Positive Terminal: Red
- Negative Terminal: Blue
- Works great with SN-6675
Specification of Thermocouple Amplifier:
- Input Voltage: DC3.3V to 5V
- Works great with Type-K Thermocouple
Step 2: Pin Definition
Step 3: Sample Hardware Installation
Step 4: Sample Source Code
To get the result, please download the sample source code attached below and upload it into Arduino.
*kindly download the attached MAX6675 Library for your own use.
Step 5: Result (1)
The reading shown on LCD screen when thermocouple is being placed in a room.
Step 6: Result (2)
The reading shown on LCD screen when the thermocouple is being heated by using a lighter for few seconds.
Step 7: Result (3)
The reading shown on LCD screen when thermocouple is being immersed in a container of water.