Certifications ATEX (Code E3) 
and IECEx (Code ER) 
 
Code E3 Ex-Marking ATEX 
II 3 G Ex nA IIC T4 ... T6 Gc IP67 
and 
II 3 D Ex tc IIIC T85°C Dc IP67 
FM Approvals Certificate:  FM09ATEX0025X, 
Electrical Data:  U = 30 V DC, I = 25 mA, 
C = 17 nF, L = 0.22 mH 
 
The meaning of the ATEX code is as follows: 
•  II: Equipment Group for hazardous surface areas  
(not mines) 
•  3: Category of equipment protection. 
•  G: Gas (dangerous media) 
•  D: Dust (dangerous media) 
•  Ex nA: Non Sparking 
•  IIC: Explosion group gases 
•  T4: Temperature class of the transmitter (which 
corresponds to 135 °C Max) with Ta= Æ50 to 85 °C 
•  T5: Temperature class of the transmitter (which 
corresponds to 100 °C Max) with Ta= Æ50 to 40 °C 
•  T6: Temperature class of the transmitter (which 
corresponds to 85 °C Max) with Ta= Æ50 to 40 °C 
•  Ex tc: Dust protected Flame-proof enclosure 
•  IIIC : Explosion Group ‘dust’ 
•  T85 °C: Maximum surface temperature of the transmitter 
housing at an ambient temperature Ta from Æ50 to 75 °C 
for dust (not for gas) with a dust layer up to 50 mm thick 
•  IP 67: For protection type, the first characteristic numeral 
indicates the protection of the integrated electronics 
against ingress of solid foreign objects including dusts. 
The assigned ಫ6ಬ means a dust-tight enclosure (no ingress 
of dust). The second characteristic numeral indicates the 
protection of the integrated electronics against ingress 
of water.  
The assigned ಫ7ಬmeans a water-protected enclosure 
against a temporary immersion in water under 
standardized conditions of pressure and time. 
 
 
 
 
Code E3 Ex-Marking IECEx 
Ex nA IIC T4 ... T6 Gc IP67 
and 
Ex tc IIIC T85°C Dc 
FM Approvals Certificate:  IECEX FME16.0004X 
 
The meaning of the IECEx rating code is as follows: 
•  Ex nA: Non Sparking 
•  IIC: Explosion group gases 
•  T6: Temperature class of the transmitter  
(corresponds to 85 °C maximum) with an ambient 
temperature from Æ50 to 85 °C. 
•  Ex tc: Dust protected Flame-proof enclosure 
•  IIIC : Explosion Group ‘dust’ 
•  T85 °C: Maximum surface temperature of the transmitter 
housing at an ambient temperature Ta from Æ50 to 75 °C 
for dust (not for gas) with a dust layer up to 50 mm thick 
•  IP67: For protection type, the first characteristic numeral 
indicates the protection of the integrated electronics 
against ingress of solid foreign objects including dusts. 
The assigned ಫ6ಬ means a dust-tight enclosure (no ingress 
of dust). The second characteristic numeral indicates the 
protection of the integrated electronics against ingress 
of water.  
The assigned ಫ7ಬmeans a water-protected enclosure 
against a temporary immersion in water under 
standardized conditions of pressure and time. 
 
 WARNING 
•  When installed, power must be supplied to the transmitter 
by a voltage limiting device which will prevent the rated 
voltage of 30 V DC being exceeded. 
•  The temperature sensor circuit (Pt100) must be connected 
in accordance with the requirements of the FM certificate.