Ultra freezers operate in extreme cold conditions, from -40°C to -140°C and beyond. A cold much more intense than we humans can imagine, and prohibitive even for most data loggers.
Here are the data loggers equipped for missions in the ultra-cold:
• S-MicroW L Ultra Freeze, if equipped with the special battery can collect data for 2 months at -80°C. Perfect for monitoring and validation!
https://www.tecnosoft.eu/en/products/temperature/s-microw-l-ultra-freeze/
• S-MicroW XL Ultra Freeze, with its long tip length and flexibility varying from 20 to 100 mm and more, collects data from the ultra-cold that can be conveniently viewed on a Windows PC.
https://www.tecnosoft.eu/en/products/temperature/s-microw-xl-ultra-freeze-temperature-data-logger/
• S-MicroW L Bendable Ultra Freeze, with a foldable semi-rigid metal probe, is operated with Windows software. It is capable of withstanding missions down to -80°C, but is not afraid of warmer temperatures of up to 140°C.
https://www.tecnosoft.eu/en/products/temperature/data-logger-ultra-freeze-bendable/
• S-MicroW XL Bendable 2 mm: the most versatile, it withstands from -40°C to 250°C, so it is the only data logger that can track data in both ultra-freeze and oven!
https://www.tecnosoft.eu/en/products/temperature/s-microw-xl-bendable-2mm/