Thermometers
The Cryogenic RhFe resistance thermometers are both robust and stable with temperature cycling. Their response is linear with temperature above 77K and deviates only slightly from linearity below 77K. Hence their sensitivity is almost constant over a wide temperature range. The thermometer can be read directly with any 4 terminal resistance meter or using a simple scanning interface card direct from a computer. Connections to the thermometer can be made using resistance wires with minimal thermal grounding without introducing temperature error.
Calibrations are 3-point (RT, 77K & 4.2K) as standard or 30 point as an option.
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