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The current output is isolated from other parts
of the electronics and protected against over-
load in the same way as the pulse outputs.
However, the current-limiting resistance R
is designed so that overload protection comes
into force at about 35 mA.
Supplied by internal voltage supply (Output1)
FLOW TRANSMITTER
Output 1
Output 3
Supplied by an external power supply
FLOW TRANSMITTER
Output 3
Manual
PTC
+
5
-
6
+
18
-
17
POWER
24-50 V DC
+
+
18
-
17
Flow Transmitter, PD 340
Current
regulator
circuit
CONTROL VALVE/
FREQUENCY
CONTROLLER (PUMP)/
INSTRUMENT
-
+
551 110 01
CONTROL VALVE/
FREQUENCY
CONTROLLER (PUMP)/
INSTRUMENT
-
-
+
551 111 01
502 010 05
R PTC
+
18
D zener,
51 V
-
17
551 109 01
23/55
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