Thermo Scientific AquaSensors
™
AnalogPlus
™
Differential pH Sensor User Guide
14
3.3.1.
Connections for AV88 Controllers
Sensors that are constructed to operate with the AV88 Controller have 6 wires and a shield. Part numbers
are located on a cable label and will have a 9 in the part number as shown: FP21A-
9-
D10.
Wire Function
Red
pH Active Electrode
Green
pH Reference Electrode
Blue
+ V
White
- V
Black
Ground
Yellow
Temperature
Shield
Earth Ground
Figure 3.5:
pH sensor hook-up for AV88 Controllers
3.3.2.
Connections for P99 Controllers
Sensors that are constructed to operate with the P99 or with third party analyzers like the GLI/Hach
P63/P53/P33/P3 have 5 wires and a shield. Part numbers are located on a cable label and will have a 7 or
8 in the part number as show: FP21A-
7-
D10 or FP21A-
8-
D10.
Wire Function
Red
pH Active Electrode
Green
pH Reference Electrode
White
-5 VDC
Black
Ground
Yellow
Temperature
Shield
Earth Ground
Figure 3.6:
pH sensor hook-up for P99 and GLI/Hach Controllers