ATEX Approved Thermocouples

with Spring Loaded Terminal Block

These semi rigid ATEX approved thermocouples are supplied with a spring loaded terminal block and can be used to replace an insert in an existing application. They can be used with service temperatures up to 1250ºC (minimum stand-off lengths must be observed).
  • Available in a wide range of protection concepts for Zones 0, 1 & 2 use. See table below for details
  • Temperature classification T6-T1, see here for stand-off requirements
  • Available in thermocouple types K, T, J, N, E, R, S and B
  • Sheath diameters from 3.0mm to 8.0mm in a wide choice of materials
  • Insulated measuring junction gives a floating output with high insulation resistance
  • Simplex, duplex and triplex sensors available
  • UKAS calibration available.
Available with the following approvals:

Protection Type Description Zone
Ex nA IIC Gc Non-Sparking (Gas) 2
Ex ia IIC Ga / IIIC Da Intrinsically Safe (Gas/Dust) 0/20

Enquiry Form

1. Thermocouple Type

2. Protection Concept

Concept Type Select
Ex ia Intrinsically Safe
Ex nA Non-Sparking

Your chosen concept is:

Ex ia Intrinsically Safe – Category 1, Zones 0,1,2 (Gas) & 20,21,22 (Dust)
• Ex ia IIC T6...T1 Ga Ta = –40°C to 60°C
• Standard EN IEC 60079-11 refers
• Designed to limit the energy of arcs or sparks that could potentially ignite an explosive mixture
• Sensors used in this area must be wired through a suitably approved barrier
• Optional approved 4 to 20mA transmitters available

Your chosen concept is:

Ex nA Non-Sparking – Category 3, Zone 2 (Gas)
• Ex nA IIC Gc T6…T2
• Standard EN IEC 60079-15 refers
• No arcs, sparks or hot surfaces

3. Sheath Material

4. Sheath Diameter

5. Sheath Length


6. Types of Sensing Junction

Illustration Select
Duplex Element Required? (please tick box)
Triplex Element Required? (please tick box)

7. Compression Fitting

8. 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  
ATEX Thermocouples with Pot Seal

ATEX Thermocouples with Die Cast Alloy Head

ATEX Thermocouples with St. / Steel Head

ATEX Thermocouples with Dual Entry Head

ATEX Thermocouples with Spring loaded terminal block

ATEX Thermocouples with Terminal Entry Gland

ATEX Spring Loaded Thermocouples

ATEX Thermocouple Feedthroughs
ATEX RTD Pt100 Sensors with Pot Seal

ATEX RTD Pt100 Sensors with Die Cast Alloy Head

ATEX RTD Pt100 Sensors with St. / Steel Head

ATEX RTD Pt100 Sensors with Dual Entry Head

ATEX RTD Pt100 Sensors with Spring loaded terminal block

ATEX RTD Pt100 Sensors with Terminal Entry Gland

ATEX Spring Loaded RTD Pt100 Sensors
ATEX 4 to 20mA Indicators

ATEX Temperature Transmitters

ATEX Compression Fittings

ATEX Terminal Heads

ATEX Pressure and Vacuum Feedthroughs

© 2014- TC Ltd., PO Box 130, UXBRIDGE UB8 2YS United Kingdom.
Tel.: 01895 252222, Fax: 01895 273540, Email:

1 Thermocouple Type Temperature Range (continuous) Temperature Range
(short term)
K Nickel 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
R Platinum - 13% Rhodium vs
0°C to +1600°C -50°C to +1700°C
S Platinum - 10% Rhodium vs
0°C to +1550°C -50°C to +1750°C
B Platinum - 30% Rhodium vs
Platinum 6% Rhodium
+100°C to +1600°C +100°C to +1820°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
2 Sheath Material Max.
Standard Sheath Materials

321 Stainless Steel

310 310 Stainless Steel 1100°C
600 Inconel 600 1100°C
Specialized Sheath Materials
114 Nicrotherm DTM 1250°C
156 Hastelloy X 1220°C
446 AISI 446 1150°C
800 Incoloy 800 1100°C

Hot junction insulated from sheath. Gives floating output with typical insulation resistance in excess of 100 megohms