Siemens SITRANS LR580 User Manual

Loop resistance versus Loop voltage
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① Loop voltage V
L
④ SITRANS LR500
② Power supply ⑤ Loop current I
L
③ Loop resistance R
L
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9വ
9വ
9വ
9വ

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① Loop resistance - R
L
② Loop voltage - V
L
Note
HAR
T communication
For example as per graph, when using HART communication with 240 Ohms of Loop resistance
(R
L
), the minimum Loop voltage (V
L
) is 16 VDC.
Technical reference
B.3Loop power
SITRANS LR500 series with mA/HART
204 Operating Instructions, 03/2024, A5E51099898-AA

Siemens SITRANS LR580 Specifications

General

Brand	Siemens
Model	SITRANS LR580
Category	Transmitter
Language	English