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IECEx Approved Thermocouples for the Petrochemical, Oil and Gas Industries

with Stainless Steel Head and Fixed Process Thread

Supplied with an IP68 termainl head, these semi rigid IECEx approved thermocouples are ideal where a heavy duty connection with cable is to be made near the sensor. They are suitable for use with service temperatures up to 1250°C (minimum stand-off lengths must be observed).
  • The following thermocouple types are available: K, T, J, N, E, R, S and B
  • A wide range of protection concepts are available for use in Zones 0, 1 & 2. See table below for details
  • For stand-off requirements (Temperature classification T6-T1), see here
  • Sensors are available in either Simplex, Duplex or Triplex
  • Available in 4.5mm, 6.0mm or 8.0mm in a wide variety of sheath materials
  • These products can be UKAS calibrated
  • A floating output with high insulation resistance is given via an insulated measuring junction
Available with the following approvals:

Protection Type Description Zone
Ex nA IIC Gc Non-Sparking (Gas) 2
Ex d IIC Gb Flameproof (Gas) 1
Ex ia IIC Ga / IIIC Da Intrinsically Safe (Gas/Dust) 0/20
Ex tb IIIC Db Enclosure (Dust) 21
Ex tc IIIC Dc Enclosure (Dust) 22



Enquiry Form

1. Thermocouple Type

2. Protection Concept

Concept Type Select
Ex d Flameproof/Explosion Proof
Ex ia Intrinsically Safe
Ex nA Non-Sparking
Ex tb Enclosure
Ex tc Enclosure
Your chosen concept is:

Ex d Flameproof/Explosion Proof – Category 2, Zones 1,2 (Gas)
• Ex d IIC T6...T1 Gb Ta = –40°C to 60°C
• Standard EN IEC 60079-1 refers
• Designed to contain an explosion and quench the flame
• Sensors incorporate a suitable heavy duty enclosure or threaded fitting with tight seals
Your chosen concept is:

Ex e Increased Safety – Category 2, Zones 1,2 (Gas)
• Ex e IIC T6...T1 Gb Ta = –40°C to 60°C
• Ex ia IIIC T80°C…T440°C Db
• Standard EN IEC 60079-7 refers
• Design ensures no arcs, sparks or hot surfaces that could ignite an explosive mixture with a minimum IP54 enclosure rating
• Sensors incorporate a suitable heavy duty enclosure or threaded fitting with tight seals
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
• Ex ia IIIC T80°C…T440°C Db
• 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
Your chosen concept is:

Ex tb Enclosure – Category 2, Zones 21, 22 (Dust)
• Ex tb IIIC T80°C…T440°C Db
• Standard EN IEC 60079-31 refers
• Protects against combustible and conductive dusts, rugged tight enclosures are used
Your chosen concept is:

Ex tc Non-Sparking – Category 3, Zone 22 (Dust)
• Ex tc IIIC T85°C...T450°C Dc
• Standard EN IEC 61241 refers
• Protects against combustible dusts
• Sensors incorporate a suitable heavy duty enclosure with IP6X seal
3. Sheath Material

4. Sheath Diameter

5. Sheath Length

 mm*
6. Types of Sensing Junction

Illustration Select
INSULATED Junction
Duplex Element Required? (please tick box)
Triplex Element Required? (please tick box)
7. Process Connection Thread

8. Optional 4 to 20mA Transmitter

9. Quantity Required

Contact Details

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Additional Information

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



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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
Platinum
0°C to +1600°C -50°C to +1700°C
S Platinum - 10% Rhodium vs
Platinum
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.
Temperature
Standard Sheath Materials
321

321 Stainless Steel

800°C
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

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