Endress+Hauser RMA 421 Bedienungsanleitung Seite 51

3.4.2 eries loop powered 2-wire transmitter when using an
external power supply
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+
14
82 83 81
2-wire transmitter, external supply
3.4.3 4-wire transmitter with separate power supply and
current or voltage output when using the loop power
supply in the unit
Please take note of the maximum power connection of the
transmitter, if required use an external power supply
(see chap. 3.4.4)
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+
83 81
82 14
4-wire transmitter with current output internal
supply
15
11
13
11
12
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I
Y
+
11 15
13
11
12
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+
-
I
Y
+
16
16
Process transmitter
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