Connection Diagram; Connection Example; Installation And Maintenance - JUMO MIDAS S21 Ex Betriebsanleitung

6.2

Connection diagram

Connection
4 to 20 mA, 2-wire (output 405)
Voltage supply DC 16 to 28 V
a
Figure: connection to the pressure transmitter
Colour coding: connecting cable round plug
M12 × 1
The colour coding is only valid for A-coded standard cables!
CAUTION!
Ground (functional grounding) the case of the pressure transmitter using the process connec-
tion to protect against electromagnetic fields and electromagnetic charges!
6.3

Connection example

Pressure
Transmitter
p
=
6.4 Maintenance
The pressure transmitter is maintenance-free.
U /S+
B
0 V/S-
Ex-I Power Supply/
Input Isolating
Amplifier
Type 707530
+ +
=
=
4 to 20 mA
– –
(L1) (N)
(L+) (L-)

6 Installation and maintenance

Terminal assignment
11
Attached cable
BU
BK
1 BN Brown
2 WH White
3 BU Blue
4 BK Black
Controller Display
Unit
+ – +
+
4 to 20 mA/0 to 20 mA
–
+ – +
+
0 to 10 V
–
a
3
36
Round plug M12 × 1
1 BN
3 BU
Recorder
– + –
– + –
2
1
4
17