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Siemens Sitrans LR250 - Page 155

Siemens Sitrans LR250
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7ML19985QX81 SITRANS LR250 (HART) – MISE EN SERVICE RAPIDE Page FR-21
mmmmm
Fraais
Zone de fonctionnement autorisée pour le SITRANS LR250
Tension de la boucle/Résistance de la boucle
Power Supply Requirements
0
100
200
300
400
500
600
700
800
900
1000
10.00 15.00 20.00 25.00 30.00
Loop Voltage-VL
Loop Resistance - R
L
RL=44.6*VL - 493.4
RL=272.7*VL - 4554.1
(16.7v, 0 ohms)
(17.8v, 300 ohms)
(30.0v,845 ohms)
ALLOWABLE OPERATING
AREA

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