Calex ExTemp Series Operatör El Kitabı - Sayfa 13

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EXAMPLE ISOLATOR: MODEL MTL5541
This isolator has an internal resistance of 220Ω. Two wiring configurations are possible,
depending on whether or not this internal resistance is used.
Configuration A:
MTL5541
Configuration B:
MTL5541
220 Ω
EXAMPLE BARRIER: MODEL MTL7706+
200 Ω ≤ RL ≤ 800 Ω
MTL7706+
400 Ω ≤ RL ≤ 800 Ω
11
-
4/20 mA
12
+
180 Ω ≤ RL ≤ 580 Ω
10
+
4/20 mA
11
-
12
+
1
2
Earth pin
(not using the internal resistance)
R L
(using the internal resistance)
R L
+
+
R
L
-
-
LCT
+
-
LCT
+
LCT
13