EAC Ex Approved Thermocouples for the Petrochemical, Oil and Gas Industries

with Stainless Steel Head

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Also available with ATEX Approval Also available with IECEx Approval

These semi rigid thermocouples are supplied with an IP68 terminal head and are ideal where a heavy duty connection with cable is to be made near the sensor. 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
Metrological / Pattern Approval Certificate (PAC) for Russia also available on request, contact us for details
Additional Primary verification “POVERKA” available on request, contact us for a quotation if required

Sheath diameters from 4.5mm 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 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 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. Optional Compression Fitting

8. Optional 4 to 20mA Transmitter

9. Quantity Required

Qty Required

Contact Details

Company Name

Your Name

Email

Telephone

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)
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 D^TM	1250°C
156	Hastelloy X	1220°C
446	AISI 446	1150°C
800	Incoloy 800	1100°C