Thermometrics NTC Thermistors

Cryogenic RL Series

Thermometrics RL Series of NTC Type Cryogenic 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 Liquid Nitrogen). 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.