Risk Of Electrostatic Discharge; Instruments Mounted In A Hazardous Area; Hazardous Area Relevant Information; Iecex/Atex - ABB AWT420 Manual

8 AW T4 2 0 | U N I V E R S A L 4 - W I R E , D U A L- I N P U T T R A N S M I T T E R | I N F/A N A I N S T/0 1 2 - E N R E V. A
...4 Hazardous area considerations

Risk of electrostatic discharge

WARNING
Serious damage to health/risk to life
Potential electrostatic charging hazard – clean only with a
damp cloth and install away from any charging risks.

Instruments mounted in a hazardous area.

If the exterior of the instrument requires cleaning, care should
be taken to minimize the risk of electrostatic discharge. Use a
damp cloth or similar to clean all surfaces.
The keypad is intended to be operated in normal use, care
should be taken to minimize the risk of electrostatic discharge.
Use rubber gloves or ensure operators have been
electrostatically discharged.

Hazardous area relevant information

NOTICE
The hazardous area designation is displayed on the name
plate/certification label – see page 7.

IECEx/ATEX

Non-Incendive
For models with EZLink channels:
II 3(3) G Ex ic ec nC [ic Gc] IIC T4 Gc
For models without EZLink channels:
II 3 G Ex ic ec nC IIC T4 Gc

Ingress protection classification

IP66

Ambient temperature range

–10 °C (14 °F) =< Ta =< 45 °C (113 °F)
Europe
NOTICE
Installation must be in accordance with IEC 60079-14 and
the wiring practices for the country of installation.

Maximum operating voltage, Um

The maximum operating voltage Um for the AC version is
253 V AC
The maximum operating voltage Um for the DC version is
36 V DC

Dielectric strength

Conforms to IEC 60079-11 clause 6.3.13 between non-IS and IS
circuits, and between IS circuits and earth.

cULus

Non-Incendive
For models with EZLink channels:
Class I Division 2 Groups A, B, C, D T4
(providing non-incendive field wiring outputs for Class I
Division 2 Groups A, B, C, D hazardous locations)
For models without EZLink channels:
Class I Division 2 Groups A, B, C, D T4
Ingress protection classification
IP66
Ambient temperature range
–10 °C (14 °F) =< Ta =< 45 °C (113 °F)
US
NOTICE
Installation must be in accordance with the National
Electrical Code (NFPA 70).
Canada
NOTICE
Installation must be in accordance with C22.1 Canadian
Electrical Code, Part 1.
Maximum operating voltage, Um
The maximum operating voltage Um for the AC version is 253 V AC
The maximum operating voltage Um for the DC version is 36 V DC
Dielectric strength
Conforms to IEC 60079-11 clause 6.3.13 between non-IS and IS
circuits, and between IS circuits and earth.

Hazardous location safety control drawings

Click below to download the hazardous location safety
drawings for AWT420 transmitter (or scan the QR codes):
AWT420 Metal transmitter UL US control drawing
AWT420 Metal transmitter UL CAN control drawing
AWT420 Metal transmitter UL ATEX IECEx control drawing
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