Heaters and Sensors

The following is a summary of all the heaters and sensors available.

Standard Sensors

 

Rhodium Iron (RhFe)

RhFe are the standard sensor in use on the majority of cryogenic equipment including CCR’s, orange cryostats and sample sticks.

 

Diameter

Body Length

Temperature Range

1/8” / 3.18mm

20mm

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

Pt100 Sensors
View full-size image

 

Diameter

Body Length

Temperature Range

1/8” / 3.18mm

or 1/16” / 1.59mm

25mm

or 15.5mm

30 – 800K

 


Cernox / Germanium Sensors

These can be used where higher accuracy is required due to a better resolution over the standard sensors.

 

Diameter

Length

Temperature Range

3.05mm

9.5mm

1.4 – 325K

 


Standard Heaters

 

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

 

Type

Diameter

Body Length

Rating

1

1/4” / 6.35mm

27mm

80V / 128W

2

1/8” / 3.18mm

50mm

100V / 100W

3

1/8” / 3.18mm

50mm

80V / 128W

4

1/8” / 3.18mm

32mm

80V / 80W

 


Kapton Heaters

These are available in a number of different shapes and sizes and can be attached using aluminium tape.

 

Watt Density

Temperature Range

20 – 40W / inch sq

Cryogenic – 200C

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