
Instruction Manual alpha-pH 1000
7
3 ELECTRICAL CONNECTION
3.1 Connection Diagram
Caution: Ensure electrical mains is disconnected before proceeding.
Signal OutputHold Input
Relay B
Relay A
Power Mains
pH
mA
Alarm/Wash
-
+
PE
S
PEAC: NL
1
2
5
4
36
78 9
10
11
12 13
14
15
17
15
16
* ) indicated contact positions are for currentless conditions
Pt 100
Potential Matching Pin (PMP)
Signal Input pH
ORP
S/
V
PE/S
pH
18 19 20 21 22
S/S/
BNC
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