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

[dah]

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!

 

[Nigel Goodwin]

You might have a look here?:

Cryogenic temperature sensors

www.lakeshore.com

 

[danadak]

Thermocouples -

Temperature Sensors - Thermocouples, Temperature Probes | Electronic Components Distributor DigiKey

Temperature Sensors - Thermocouples, Temperature Probes are in stock at DigiKey. Order Now! Sensors, Transducers ship same day

www.digikey.com

RTD -

Temperature Sensors - RTD (Resistance Temperature Detector) | Electronic Components Distributor DigiKey

Temperature Sensors - RTD (Resistance Temperature Detector) are in stock at DigiKey. Order Now! Sensors, Transducers ship same day

www.digikey.com

Regards, Dana.

 

[Pommie]

A low cost solution may be this.

Mike.

 

[augustinetez]

And related to Pommie's post http://www.temperatures.ru/pdf/S&A_2001.pdf - I have opened it and it is safe.

 

[dah]

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