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General Purpose Thermocouples

FEP Insulated Thermocouple (Type 33)

These flexible FEP insulated thermocouples are ideally suited to applications which require resistance to attack from virtually all known chemicals, oils and fluids. Available in Type K, T, J, E and N thermocouple types, 4mm in diameter, the length of which can be cut down to an exact size by the user if necessary. The sensing junction is encapsulated in the tip and the whole sensor is rated to 250°C.

A heavy duty version is also available with a heavy duty FEP plug ended sheath overall, 300mm as standard but other lengths are available upon request. Maximum length 5mtrs.

Enquiry Form

1. Version Required

Description Select

1a. FEP Plug Ended Tube Length (mm)

(300mm standard)  mm

2. Thermocouple Type

3. Overall Length (max. 5mtrs)


4. Optional PTFE Fitting

5. Optional Thermocouple Plug

6. Quantity Required

Contact Details

Company Name

Your Name



Additional Information

If your enquiry is for more than one style of sensor, please email us with your requirements or use the box below

Send Enquiry  

1 Thermocouple Type Temperature Range (continuous) Temperature Range
(short term)
KNickel Chromium vs
Nickel Aluminium
0°C to +1100°C -180°C to +1350°C
T Copper vs Constantan -185°C to +300°C -250°C to +400°C
J Iron vs Constantan +20°C to +700°C -180°C to +750°C
N Nicrosil vs Nisil 0°C to +1100°C -270°C to +1300°C
E Nickel Chromium vs Constantan 0°C to +800°C -40°C to +900°C
Temperature ranges refer to the thermocouple type.
The temperature range of the sensor may deviate from the above,
please refer to the product description for more details