MAX31855 Thermocouple Amplifier Gain and Output
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MAX31855 Thermocouple Amplifier Gain and Output
For the MAX31855 thermocouple amplifier listed on the website (http://www.adafruit.com/products/269), I couldn't find any information on the gains I would be able to get for my temperature readings. Also, is the output digital or analog? I am not very familiar with SPI.
- redwire
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- Joined: Tue Dec 18, 2012 2:24 pm
Re: MAX31855 Thermocouple Amplifier Gain and Output
The MAX31855 family has fixed gain and is designed to be used with specific thermocouples; they're optimized and trimmed according to the part number suffix i.e. MAX31855K is for type-K thermocouples.
The chip digitizes both the thermocouple and cold-junction temperaure and outputs the data serially via SPI.
There is an Arduino library here, from Rocket Scream and their Open Source PID controller: https://github.com/rocketscream/MAX31855
This shows how to massage the data into a temperature.
The chip digitizes both the thermocouple and cold-junction temperaure and outputs the data serially via SPI.
There is an Arduino library here, from Rocket Scream and their Open Source PID controller: https://github.com/rocketscream/MAX31855
This shows how to massage the data into a temperature.
Please be positive and constructive with your questions and comments.