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Temperature sensor for Raspberry Pi (-100°C to 0°C)

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dah

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Hi all,
I would like to monitor the temperature of a -80°C freezer with a raspberry Pi and have a hard time finding a temperature sensor that can measure temperatures as low as -100°C. All I can find ends at -40 or -50°C.
I have seen a temperature monitor that someone had built with a raspberry Pi for measuring liquid nitrogen temperatures, so I assume there must be sensors commercially available ...
Maybe I am looking for the wrong keywords? Can anyone recommend a digital (or analog) sensor that can be used with a raspberry pi or an arduino?
Thanks!
 
Thermocouples -


RTD -



Regards, Dana.
 
Awesome! Thanks a lot!
I was looking for one and now I have to choose one. ;-) Thanks a lot!
 
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