4 Chromalox 3101 Operator's Manual
Sensor
Selection
Switches
Sensor selection requires that you:
1. Set the sensor switches for the correct sen-
sor type.
2. Program the input sensor type in sensor
selection setup on the INPT Page (see page
36).
It is much easier to set the sensor input switch-
es before you mount and wire the controller.
To set the sensor switches:
1. Locate the sensor switches — #1, #2 and
#3 — on the bottom of the controller, as
shown in Figure 2.1 on the previous page.
2. Place the switches in the appropriate Up or
Down position for your input type:
Switch #
Input Type 1 2 3
T/C Up Up Up
RTD Down Up Up
4-20mA Up Down Down
1-5 Vdc Up Up Down
Figure 2.2, on the following page, shows the
mounting dimensions for the controller:
1. Cut out the square “panel cutout” mounting
hole and install the unit as shown in Figure
2.3.
2. Place the controller through the square
panel cutout and replace the mounting clip.
3. Tighten the mounting clip screw (do not
overtighten) to secure the controller fi rmly
against the mounting surface.
Mounting
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