Thermo Scientific AquaSensors
™
AnalogPlus
™
Contacting Conductivity Sensor User Guide
8
3.
INSTALLATION
3.1.
Wiring
There are two different methods for electrical connection between the sensor and the conductivity controller:
either direct or through a junction box.
3.1.1. Direct Connection
1.
Insert the sensor cable through a watertight cord grip into the Model C99 Controller. Conduit holes are
found on the bottom of the C99 controller for this purpose.
2.
Connect the sensor wires to the C99 controller as outlined in the controller manual.
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 Model C99 Controller.
Conduit holes are found on the bottom of the C99 controller for this purpose.
4.
Connect the sensor wires to the C99 controller as outlined in the controller 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.
Figure 3.1:
Conductivity Sensor Hook-Up
