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266CRH / 266CRT, 266CSH / 266CST MULTIVARIABLE PRESSURE TRANSMITTER | OI/266CXX/MODBUS-EN REV. A
Type of Protection: Ex n 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:
Electrical Data:
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 to 85 °C
•
T5: Temperature class of the transmitter (which
corresponds to 100 °C Max) with Ta= 50 to 40 °C
•
T6: Temperature class of the transmitter (which
corresponds to 85 °C Max) with Ta= 50 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 50 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 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.
FM09ATEX0025X,
U = 30 V DC, I = 25 mA,
C = 17 nF, L = 0.22 mH
Code E3 Ex-Marking IECEx
Ex nA IIC T4 ... T6 Gc IP67
and
Ex tc IIIC T85°C Dc
FM Approvals Certificate:
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 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 50 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 V DC being exceeded.
•
The temperature sensor circuit (Pt100) must be connected
in accordance with the requirements of the FM certificate.
IECEX FME16.0004X
9
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