Temperature sensor failures are common in cold applications when standard sensors are used. Why? Because the seals of most sensors are not designed to withstand the severe material contraction that occurs at low temperatures.
Contraction results in high failure rates of the seals and may allow trace amounts of moisture to bypass the seals and penetrate into the sensor. Once inside, this moisture leads to inaccurate readings and, ultimately, sensor failure.
To combat the issues with cold temperatures and moisture intrusion, Burns Engineering developed sensors specifically designed for cold environments down to -320.8°F (-196°C). Common applications for these sensors include cold storage, freeze dryers and freezer farms.