Emerson Rosemount 1151 Pressure Transmitter Manual do Utilizador descarregar pdf (Página 8)

Quick Installation Guide

00825-0100-4593, Rev BA

July 2009

Rosemount 1151

STEP 3 CONTINUED...

Power Supply

The dc power supply should provide power with less than two percent ripple. The total

resistance load is the sum of the resistance of the signal leads and the load resistance of the

controller, indicator, and related pieces. Note that the resistance of intrinsic safety barriers, if

used, must be included.

Figure 2. Load Limitation

Code V

min

max

min

max

at Supply Voltage (V

)

(1)

(1) A minimum of 250



is required for communication.

12 45 0 1650 R

= 43.5 (V

– 12)

max

min

max

Operating

Region

4593_Rev_BA.fm Page 8 Friday, August 7, 2009 3:38 PM

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Emerson Rosemount 1151 Pressure Transmitter Manual do Utilizador Página 8