Rosemount 848T Manual do Utilizador descarregar pdf (Página 16)

January 2015

Quick Start Guide

IA ATEX FISCO Intrinsic Safety

Certificate: Baseefa09ATEX0093X

Standards: EN 60079-0:2012, EN60079-11:2012

Markings: II 1 G Ex ia IIC T4 Ga (-50 °C

≤ T

≤ +60 °C) when installed per drawing

00848-4406

Special Conditions for Safe Use (X):

1. The equipment must be installed in an enclosure that provides a degree of

protection of at least IP20. Non-metallic enclosures must be suitable to

prevent electrostatic hazards and light alloy or zirconium enclosures must be

protected from impact and friction when installed.

2. The equipment is note capable of withstanding the 500 V insulation test

required by EN 60079-11:2012, clause 6.3.13. This must be taken into

account when installing the equipment.

N1 ATEX Type n (with enclosure)

Certificate: Baseefa09ATEX0095X

Standards: EN 60079-0:2006, EN60079-15:2005

Markings: II 3 G Ex nA nL IIC T5(-40 °C

≤ T

≤ +65 °C)

Special Conditions for Safe Use (X):

1. Provision must be made, external to the apparatus, to ensure the rated

voltage of the apparatus supply is not exceeded by transient disturbances of

more than 40%.

2. The electrical circuit is connected directly to earth; this must be taken into

account when installing the apparatus.

Table 6. Entity Parameters

Fieldbus

(input)

Sensor field terminal

(output)

= 30 V U

= 12.5 V

= 300 mA I

= 4.8 mA

= 1.3 W P

= 15 mW

= 2.1 nF C

= 1.2 μF

= 0 L

= 1 H

Table 7. Entity Parameters

FISCO

(input)

Sensor field terminal

(output)

= 17.5 V U

= 12.5 V

= 380 mA I

= 4.8 mA

= 5.32 W P

= 15 mW

= 2.1 nF C

= 1.2 μF

= 0 L

= 1 H

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