ABB 266 MODBUS User Manual page 108

E.1.2 Type of Protection: "Ex n" Certifications ATEX (Code E3) and IECEx (Code ER)
Code E3 Rating: ATEX II 3 G Ex nA IIC T4/T5/T6 (T4 for Ta= -50 °C to +85 °C), (T5 and T6 for Ta = -50 °C to +40 °C) IP67 and
ATEX II 3 D Ex tD A22 IP67 T85 °C Ta = -50 °C to +75 °C
Electrical Data: U = 30 Vdc, I = 25mA, C = 17nF, L = 0.22mH
FM Approvals Certificate: FM09ATEX0025X, 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= -50 °C to +85 °C
— T5: Temperature class of the transmitter (which corresponds to 100 °C Max) with Ta= -50 °C to +40 °C
— T6: Temperature class of the transmitter (which corresponds to 85 °C Max) with Ta= -50 °C to +40 °C
— Ex tD: Dust protected Flame-proof enclosure
— A22: Dust Intended Zone of Installation
— T85 °C: Maximum surface temperature of the transmitter housing at an ambient temperature Ta from -50°C 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 "6" 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 "7"means a
water-protected enclosure against a temporary immersion in water under standardized conditions of pressure and time.
IMPORTANT NOTES: The number printed by the CE mark on the safety label identifies the Notified Body which has
responsibility for the surveillance of the production.
Code ER Rating: IECEx Ex nA IIC T6, Ta = -50 °C to +85 °C and IECEx Ex tD A22 IP67 T85 °C, Ta = -50 °C to +75 °C
FM Approvals Certificate: IECEx FME09.0004X, 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 -50 to 85 °C.
— Ex tD: Dust protected Flame-proof enclosure
— A22: Dust Intended Zone of Installation
— T85 °C: Maximum surface temperature of the transmitter housing at an ambient temperature Ta from -50 °C 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 "6" 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 "7"means 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 Vdc being exceeded.
The temperature sensor circuit (Pt100) must be connected in accordance with the requirements of the FM certificate.
For correct installation in field of 266 pressure transmitters please see the related control drawing.
100 | 266 MODBUS® multivariable transmitter User manual 2105216 Rev. AB
Appendix E Hazardous area ratings and considerations