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...4 ELECTRICAL CONNECTIONS
4.3 Wall-/Pipe-mounted Instrument Connections – Fig. 4.4
Note. Refer to Fig. 4.1 for Access to Terminals.
Caution. Slacken terminal screws fully before making connections.
+
–
+
1
2
3
4
Thermocouple
Probe
Themocouple
Probe
1 +
2 –
2 –
3 +
Warning. The power supply earth (ground) must be connected to ensure safety to personnel, reduction of the
effects of RFI interference and correct operation of the power supply interference filter terminal.
Note. Cut the probe cable braid
back to the outer sheath.
8
1
2
3
5 6 7
4
5
6
Fig. 4.4 Wall-/Pipe-mounted Instrument Connections
1
2
3
+
–
4
5
6
Retrans.
Relay 1
output
Relay 2
Retransmission
Relay 1
Output
Relay 2
Relays
+
Retrans.
1
–
NC
–
Output
2
–
C
3
–
NO
4
–
NC
5
–
C
6
–
NO
=
NC
Normally Closed
=
C
Common
=
NO
Normally Open
N
L
Power
Supply
Power
Supply
Mains Supply
N
–
Neutral
L
–
LIne
Relay 1
–
– Earth
Relay 2
Earth Stud
(on case) –
see Fig. 4.1
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