RL1004 Series Cryogenic NTC Thermistors

Amphenol Advanced Sensors Thermometrics RL series cryogenic NTC thermistor probes are used in liquid level detection in various cryogenic liquids. For use in the range of +25°C/+77°F (room temperature) to -196°C/-320.8°F (the boiling point of LN2). Cryogenic thermistor probes consist of a pressed disc thermistor attached to #27 AWG silver lead wires. These units are very stable and exhibit no hysteresis effects. Rapid temperature cycling from +77°F to -320.8°F (+25°C to -196°C) has no measurable effect on electrical, thermal, or mechanical properties. These units are well-suited for cryogenic control applications, such as liquid level in the +77°F to -320.8°F (+25°C to -196°C) range. They may be used at temperatures below the nitrogen point with suitable instrumentation.