4
3 ELECTRICAL
CONNECTIONS
3.1 Connection
Diagram
Signal Output
Hold Input
Relay B
Relay A
Power Mains
pH
mA
-
+
PE/S
PE
AC:
N
L
1
2
5
4
3
6
7
8
9
10
11
12
13
14
15
17
15
16
* ) indicated contact positions are for currentless conditions
Pt 100
Potential M atching Pin (P MP)
Signal Input pH/ORP
S/
V
PE/S
pH
18
19 20
21 22
S/
S /
BNC