Installation
Hydro-Air P-38
8
pH / ORP Analyzer
4.2.1. Conventional Combination Sensor Without Grounding
Electrode (2-Wire Sensor)
The 2-Wire Sensor features an Active Electrode (pH) and a Reference Electrode
(Ref.). The Temperature Electrode (Temp. or T/P) is an optional feature of the
sensor for temperature compensation. Since the 2-Wire Sensor does not feature a
Grounding Electrode, the short pin is required in this setup.
Figure 4 Connection figure for 2-Wire Sensor
Conductive layer
T/P or Temp. (Pt1000 / NTC10K)
SHORT
12
11
10
6
5
pH (Transparent)
Coaxial
cable
Sensor Body
Ref. (Black)
