Page 11
3.4 Terminal Connections
Note: The power connections detailed below are for normal mains power.
Refer to section 11.3 for power wiring details when the 12V DC power option
is fitted.
Terminal No. Connection
Colour
1
Salinity/TDS Sensor ATC
Blue
2
Salinity/TDS Sensor ATC
White
3
No Connection
4
Guard
Shield/Braid (only fitted
for very long sensor
cable)
5
Salinity/TDS Sensor Cell
Black
6
Salinity/TDS Sensor Cell
Red
7
+ve of current or voltage output
Customer-defined
8
-ve of current or voltage output
Customer-defined
9
No Connection
10
Normally Closed contact of
(optional) relay output
Customer-defined
11
Common contact of (optional) relay
output
Customer-defined
12
Normally Open contact of
(optional) relay output
Customer-defined
13
240V AC Active input
Brown (standard colour)
14
Duplicate 240V AC Active contact.
See section 11.2.
Brown (standard colour)
15
240V AC Earth input
Green (standard colour)
16
Duplicate 240V AC Earth contact.
See section 11.2.
Green (standard colour)
17
240V AC Neutral input
Blue (standard colour)
18
Duplicate 240V AC Neutral
contact. See section 11.2.
Blue (standard colour)
