Thermo Scientific AquaSensors
™
AnalogPlus
™
Dissolved Oxygen Sensor (ppm) User Guide
9
3.
INSTALLATION
3.1.
Wiring
Yellow Wire (Temperature)
Black Wire (Ground)
Red Wire (Sense)
Green Wire (Drive)
Blue Wire (+V)
White Wire (-V)
Drain/Shield (Earth)
Figure 3.1: D.O. Sensor Hook-Up
There are two different methods for electrical connection between the sensor and the Dissolved Oxygen
Analyzer - either direct or through a junction box.
3.1.1. Direct Connection
1.
Insert the sensor cable through a watertight cord grip into the AV88 Universal Analyzer. Conduit holes
are found on the bottom of the analyzer for this purpose.
2.
Connect the sensor wires to the AV88 as shown on the AV88 wiring chart.
3.1.2. Indirect Connection (Using a Junction Box)
1.
Insert the sensor cable and the interconnect cable through a watertight cord grip into the junction box
that has a terminal strip designed to make the proper connections.
2.
Connect both the sensor cable wires and the interconnect wires to the terminal strip.
3.
Insert the interconnect cable through a watertight cord grip into the AV88F Analyzer.
Conduit holes are found on the bottom of the analyzer for this purpose.
4.
Connect the sensor wires to the AV88 as outlined in the analyzer manual.
Be sure that the wire colors of the sensor cable match those of the interconnect cable on
either side of the terminal strip.
Route the interconnect cable through metal conduit to minimize electrical noise that may
interfere with the sensor signal.
