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L
MAINS
N
INPUT
E
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
CURRENT
–
-
O/P 1
+
+
–
-
O/P 2
+
+
–
-
O/P 3
+
+
–
-
O/P 4
+
+
CURRENT
–
-
O/P 5
+
+
–
-
O/P 6
+
+
-
TX-
+
TX+
-
RX-
+
RX+
0V
Fig. 2.4 Electrical Connections – Single Stream
Power Supply Input
Alarm 1
Concentration
Alarms
Alarm 2
'Out of Sample' Indication
Alarm Relay
Not Used
Remote 'Calibration Mode'
Indication Alarm Relay
Remote 'Out of Service'
Indication Alarm Relay
Current O/Ps 1 and 2 – two
independent current outputs
for external recording or
control
Not Used
Optional Serial Interface –
see supplementary instruction
manual for details
2 INSTALLATION...
L
MAINS
N
INPUT
E
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
N/O
C
N/C
CURRENT
–
-
O/P 1
+
+
–
-
O/P 2
+
+
–
-
O/P 3
+
+
–
-
O/P 4
+
+
CURRENT
–
-
O/P 5
+
+
–
-
O/P 6
+
+
-
TX-
+
TX+
-
RX-
+
RX+
0V
Fig. 2.5 Electrical Connections – Multi-Stream
Power Supply Input
Stream 1
Stream 2
Stream 3
Configurable as
concentration or
'Out of Sample'
Alarm Relay
Stream 4
Stream 5
Stream 6
Remote 'Calibration Mode'
Indication Alarm Relay
Remote 'Out of Service'
Indication Alarm Relay
Stream 1
Stream 2
Stream 3
Stream Current
Outputs – one
Stream 4
current output
per stream
Stream 5
Stream 6
Optional Serial Interface –
see supplementary instruction
manual for details
7
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