The following is a summary of all the heaters and sensors available.
Rhodium Iron (RhFe)
RhFe are the standard sensor in use on the majority of cryogenic equipment including CCR’s, orange cryostats and sample sticks.
RhFe Sensor View full-size image
1/8” / 3.18mm
1.4 – 450K normal use
(up to 800K with possible calibration drift)
100 Ohm Platinum Resistance Thermometers (Pt100)
Pt100 are used when operating at higher temperatures or when low cryogenic temperatures are not required. They are available in two different diameters and lengths.
Pt100 Sensors View full-size image
or 1/16” / 1.59mm
30 – 800K
Cernox / Germanium Sensors
These can be used where higher accuracy is required due to a better resolution over the standard sensors.
1.4 – 325K
Heaters View full-size image
Watlow "Firerod" Cartridge heaters
There are four different standard cartridge heaters available. They come in a variety of sizes and ratings and all work from cryogenic temperatures up to 500 deg C
1/4” / 6.35mm
80V / 128W
100V / 100W
80V / 80W
These are available in a number of different shapes and sizes and can be attached using aluminium tape.
20 – 40W / inch sq
Cryogenic – 200C
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