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Automation Components, Inc.

2305 Pleasant View Road  |  Middleton, WI 53562

Phone:

 1-888-967-5224  |  

Website:

 workaci.com

Page 1

Version: 2.0

I0000810

FIGURE 1: 

ENCLOSURE

DIMENSIONS

DUCT SERIES

Installation & Operation Instructions

Phone:

 1-888-967-5224

Website:

 workaci.com

PRECAUTIONS
• DO NOT RUN THE WIRING IN ANY CONDUIT 

WITH LINE VOLTAGE (24/120/230 VAC).

GENERAL INFORMATION

The Duct sensor is a single point temperature 
sensor that is designed for use with electronic 
controllers in commercial heating and cooling 
building management systems.  It is available 
with multiple thermistor or RTD options.    

For optimal temperature readings, follow these 
tips:  

Duct probe should be placed (3) to (4) duct segments 

down from any bend or obstructions and away from 
90° bends. 

Mount the sensor on the top or sides of duct work; 

mounting on the bottom risks damage due to 
moisture.

The sensor should be mounted in the middle of the 

duct where air circulation is well mixed (no 
stratification), and not blocked by obstructions. 
Stratification and obstructions can cause sensing 
errors. An example is downstream from a heating or 
cooling coil.

MOUNTING INSTRUCTIONS

Drill a 3/8” hole in the duct and insert the probe through 
the hole until the foam pad is tight to the duct. Drill pilot 
holes for the (2) mounting screws. Use the enclosure 
flange as a guide, or use the dimensions listed below to 
measure out. 

3.88"

(98.60 mm)

2.19"

(55.69 mm)

2.55"

(64.77 mm)

3.70"

(93.980 mm)

NEMA -4X (-4X)

BELL BOX (-BB)

2.95"

(75.00 mm)

2.34"

(59.38 mm)

4.72"

(119.83 mm)

PLASTIC BOX (-PB)

3.60"

(91.44 mm)

2.25"

(57.15 mm)

4.79"

(121.55 mm)

2.35"

(59.80 mm)

GALVANIZED ENCLOSURE (-GD)

4.20"

(106.68 mm)

3.88"

(98.60 mm)

2.41"

(61.21 mm)

1.78"

(45.18 mm)

0.61"

(15.49 mm)

3.88"

(98.60 mm)

0.98"

(24.89 mm)

WITHOUT BOX (-DO)

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