Rosemount 5300 Series

Reference Manual

00809-0100-4530, Rev BA July 2009

Figure B-20. Approval Label IECEx Foundation Fieldbus model

I7 Intrinsically Safe

Ex ia IIC T4 (Tamb = -50 °C to +60 °C).

IECEx NEM 06.0001X.

FOUNDATION Fieldbus: Ui=30 V, Ii=300 mA, Pi=1.5 W, Ci=0 nF,

Li=0 mH.

Installation Drawing: 9240 030-938.

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 cm2 for Zone 1 and 4 cm2 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.

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Emerson Process Management manual Rosemount 5300 Series