An on-off cryogenic level sensor
(1975) Proceedings of the 14th International Conference on Low Temperature Physics — Location: Otaniemi, Finland (14.August.1975)
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- Abstract
- The device has the advantage of being decidedly on-off. A resistive wire R is wound around one end of a sample X, which has its other end in good thermal contact with a small heat sink S. Two electrical contacts are attached to the sample. With this arrangement, if S is maintained at a fixed temperature, while the probe is out of the liquid, there will be a temperature gradient Delta T across the sample when a current flows in the resistor R. In order that this temperature gradient be mainly determined by the heat losses to the surroundings (here the thermal conductance of the vapour), the thermal conductance of the sample should be kept small compared to these losses.
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Citations
Issi, J.-P. (1975). An on-off cryogenic level sensor. In Krusius, M.; (ed.), Proceedings of the 14th International Conference on Low TemperaturePhysics (p. p. 301-304). North-holland. https://hdl.handle.net/2078.5/223554