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...APPENDIX C
C1.4 Panel-mounted Instrument Connections – Fig. C4
Note. Refer to Fig. 3.2 for Access to Terminals.
Caution. Slacken terminal screws fully before making connections.
Retransmission Output
Normally Closed
Common
Relay 1
Normally Open
Normally Closed
Common
Relay 2
Normally Open
Neutral
Mains Supply
– see Warning below
Warning. The power supply earth (ground) must be connected to ensure safety to personnel, reduction of the effects of
RFI and correct operation of the power supply interference filter.
44
+
1
–
2
3
4
5
6
7
8
9
E
N
Live
L
Earth
Earth Stud (on case)
Fig. C4 Panel Mounted Instrument Connections
Earth Stud
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
E
10
N
11
10
L
12
11
12
1
0V
2
Rx–
RS485 Serial
3
Rx+
Interface (If fitted)
4
Tx–
5
Tx+
6
Black & Blue
7
8
9
Green
Red
Turbidity Unit
Braid
Earth Stud (on case)
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