8
– Earth
Earth Stud
(on case) –
see Fig. 4.1
Probe
Themocouple
Power
Supply
Retransmission
Relay 1
Relay 2
1
2
3
4
5
6
7
+
–
N
L
1
2
3
4
5
6
1
2
3
4
5
6
+
–
Retrans.
Output
Relays
1
2
3
4
5
6
–
–
–
–
–
–
NC
C
NO
NC
C
NO
Relay 1
Relay 2
Mains Supply
N
L
–
–
Neutral
LIne
–
Output
NC
C
NO
Normally Closed
Common
Normally Open
=
=
=
Probe
Thermocouple
Power
Supply
Retrans.
Relay 1
Relay 2
output
1
+
2
–
2
–
3
+
+ – +
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.
…4
ELECTRICAL CONNECTIONS
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.
Fig. 4.4 Wall-/Pipe-mounted Instrument Connections
Summary of Contents for 4600 Series
Page 26: ...24 NOTES ...
