Emerson Process Management ROSEMOUNT 5300 Manual de usuario descargar pdf (Pagina 239)

Reference Manual

00809-0100-4530, Rev BA

July 2009

B-17

Rosemount 5300 Series

IECEX APPROVAL

Intrinsic Safety

Figure B-19. Approval Label

IECEx HART model

I7 Intrinsically Safe

Ex ia IIC T4 (T

amb

-50 °C to +70 °C)

(1)

IECEx NEM 06.0001X.

4-20 mA/HART: U

=30 V, I

=130 mA, P

=1 W, C

=7.26 nF, L

=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 cm

for Zone 1 and 4 cm

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.

(1) Other temperature restrictions may apply, please refer to “Specifications” on page A-1.

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Emerson Process Management ROSEMOUNT 5300 Manual de usuario Pagina 239