Emerson ROSEMOUNT 5300 Especificações descarregar pdf (Página 18)

Reference Manual

00809-0600-4026, Rev BA

December 2011

Rosemount Process Radar

2-8

Type n Approvals : Non-Sparking / Energy Limited Power Supply

Load Limitations

The Field Communicator requires a minimum load resistance of 250  within

the loop to function properly. The maximum load resistance can be obtained

from the following diagrams.

NOTE

For Flameproof / Explosion-proof installations, the diagram is only valid if the

HART load resistance is at the + side and if the - side is grounded. Otherwise,

the load resistance value is limited to 435 .

NOTE

Rosemount 5300 Series Transmitters with Flameproof/Explosion-proof

Output have a built-in barrier; no external barrier needed.

Load Resistance

250 

Power

Supply

HART

Modem

Field

Communicator

Rosemount 5300 Series

Transmitter

HART: U

= 42.4 V

R(): Maximum Load Resistance

(V): External Power Supply Voltage

Explosion-proof/Flameproof (Ex d)

Installations

Non-Hazardous Installations, and

Non-Sparking / Energy Limited Power Supply

R(): Maximum Load Resistance

(V): External Power Supply Voltage

Operating

region

Operating

region

Intrinsically Safe Installations

R(): Maximum Load Resistance

(V): External Power Supply Voltage

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 105 106

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