Capteurs de température avec agrément ATEX

ATEX certified sensors

EX petit 100
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ATEX certified sensors are especially designed for potentially explosive atmospheres.

The European directive 94/9/CE contains a series of technical and legal requirements for equipment and protective systems intended for use  in potentially explosive atmospheres created by flammable gases, vapors, mists or dusts :


    • Design and construction from the point view of integrated explosion safety
    • Analysis of possible operating faults (risks assessment)
    • Surrounding area conditions (zoning)
    • Special checking and maintenance conditions (qualification of the staff involved)
    • Marking (identification, information essential for a safe use)
    • Instructions (for assembling and installation)
    • Documentation records


Different concepts of protection apply according to the type of hazardous areas :

 « d » protection concept

Flameproof enclosure
The explosion is confined inside the apparatus thanks to a very robust envelope.
Flameproof gaskets, which must be regularly inspected, prevent any flame to go outside the envelope.
CORREGE ‘s CSADF and CTADF sensors are certified for use in zone 1 and 21 areas (medium risk) with gases or dusts

 « i » protection concept

Intrinsic safety
A barrier or a galvanic isolator  limits the energy delivered to the circuit in order to prevent any arc or sparks from arising.
« ia » protection concept : The equipment is able to widthstand two faults of its safety components . « ia » concept is compulsory in zone 0
"ib" protection concept : The equipment is able to widthstand one fault of its safety components. "ib" concept may be used in zones 1 and 2.

 « n » protection concept

Temperature sensors produce a low level of energy and can therefore be used in zone 2 with "n" protection concept when the risk of explosion due to the presence of dust, gas or mist may occur only under very rare abnormal working conditions. In these conditions the sensors are self-certified by Correge.

 "e" protection concept
Increased safety.
The components inside the envelope must not produce any arcs, sparks or dangerous temperatures under normal operating conditions. The envelope must be IP54 tight.



Zone classification for surface industries (groupe II)

Equipment category:



 protection level

 protections /


 authorized protection concept



gases, mists, vapours, air/dust mixtures


very high

   2 means of protection or 
  2 independent faults

 zone 0 (gas)

 zone 20 (dust)

 "ia" only


gases, mists, vapours, air/dust mixtures


 1 means de protection, frequently occuring disturbances

 zone 1 (gas)

zone 21 (dust)

 "ia", "ib", "d", "e"


gases, mists, vapours, air/dust mixtures


 requisite level of protection

 zone 2 (gas)

zone 22 (dust)

 All protection concepts + "n" concept only in zone 2

 Correspondances between the European, American and Canadian standards  :

explosive  atmosphere

  continuously present

 frequently present 
(normal operational conditions)

occasionally present 
(abnormal operational conditions ) 

Europe, France

  Zone 0 (Gas)
Zone 20 (Dust)

  Zone 1 (Gas)
Zone 21 (Dust)

  Zone 2 (Gas)
Zone 22 (Dust)

 CEC* Canada

 NEC** U.S.A.

 Cl I Div 1/Cl I zone 0 (gas)
 Cl II Div 1 (dust)
 Cl III Div 1 (fibers)

 Cl I Div 1/zone 1 (gas)
 Cl II Div 1 (dust)
 Cl III Div 1 (fibers) 

 Cl I Div 2/Cl I zone 2 (gas)
 Cl II Div 2 (dust)
 Cl III Div 2 (fibers)

(*) CEC : Canadian Electrical Code - (**) NEC : National Electrical Code


Safety requirements impose that the maximum surface temperature of the equipment situated outside of the measure taking area be below the temperature of self-ignition of the gas contained in the hazardous zone.

 Classe de température







 température maximale







ATEX certified temperature sensros must comply with the marking requirements defined in the 94/9/CE European directive.

general marking :

Marking must be legible, durable and indestructible. A specific marking is added which depends on the requested protection concept, for example: 

ATEX shéma gas anglais 300
ATEX shéma dust 300

Correge has obtained following LCIE certifications:

  • LCIE 03 ATEX 6427 X concerning cable-type RTD sensors and thermocouples, with  « ia » or « ib » protection concept. Download certificate
  • LCIE 03 ETX 6057 X concerning head-type RTD sensors and thermocouples, with  « ia » protection concept. Download certificate
  • LCIE 03 6058 X concerning head-type RTD sensors and thermocouples, with  "d" protection concept. Download certificate

Temperature sensors with "nL" protection concept can also be manufactured, when applicable.  Please contact us !

All CORREGE-make ATEX certified sensors have got the GOST R - NANIO CCBE N° 7454152 certificate. Download certificate.  

Gamme de produits :