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Rosemount 5300 series – Emerson Process Management ROSEMOUNT 5300 User Manual

Page 243

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Reference Manual

00809-0100-4530, Rev BA
July 2009

B-21

Rosemount 5300 Series

Figure B-23. Approval Labels
IECEx Foundation Fieldbus

E7

Flameproof

Ex iad IIC T4 (T

amb

:-40° C to +60 °C).

IECEx NEM 06.0001X.

U

m

=250 VAC

Conditions of Certification

The intrinsically safe circuits do not withstand the 500V AC test as specified in
EN 50020 clause 6.4.12.

Probes covered with plastic and/or with plastic discs will have a
non-conducting area that exceeds the maximum permissible area for Group
IIC accoring to IEC 60079-01 clause 7.3: 20 cm

2

for Zone 1 and 4 cm

2

for

Zone 0. Therefore, when the probe is used in a potentially explosive
atmosphere, appropriate measures must be taken to prevent electrostatic
discharge.

Impact and friction hazards need then to be considered according to IEC
60079-0 clause 8.1.2 when the transmitter exposed to the exterior
atmosphere of the tank is made with light metal alloys and used in Zone 0.