Emerson ROSEMOUNT 5300 Instalační příručka stáhnout pdf (Strana 12)

March 2013

Quick Installation Guide

Step 3 continued...

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.

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 ... 7 8 9 10 11 12 13 14 15 16 17 ... 35 36

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Emerson ROSEMOUNT 5300 Instalační příručka Strana 12