Siemens SITRANS LR200 Kurzanleitung Seite 204

Loop power
Curve 1 (General Purpose, Intrinsically Safe, Non-incendive)
Loop Voltage versus Loop Resistance
1000
900
800
700
600
500
400
(17.8v, 300 ohms)
300
RL=272.7*VL - 4554.1
200
100
(16.7v, 0 ohms)
0
10.00
Curve 2 (Flameproof, Increased Safety, Explosion-proof)
Loop Voltage versus Loop Resistance
7ML19985QL83
Power Supply Requirements
RL=44.6*VL - 493.4
15.00
Loop Voltage-V
(Source voltage)
SITRANS LR200 (HART) – QUICK START MANUAL
(30.0v,845 ohms)
ALLOWABLE OPERATING
AREA
20.00 25.00
L
30.00
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