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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

I0000819

FIGURE 1: 

ENCLOSURE

DIMENSIONS

STRAP ON 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 ACI Strap-On Series Sensor features a 1.5” 

square copper plate with the sensor encapsulated 

to the back side of the plate to improve the thermal 

conductivity between the pipe and the sensor 

when an immersion style sensor can’t be inserted 

into the pipe. The Strap-On temperature 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 

and RTD options.

The Strap-On series sensor can be used to monitor 

pipe sizes from 1-1/4” to 10” (31.75mm to 254mm). 

The “-S” Model is designed to fit around an 1-1/4” to 4” 

(31.75mm to 101.5mm) pipe.  The “-S10” Model is 

designed to fit around a 2” to 10” (50.8mm to 

101.5mm) pipe. The “-S” Model can be mounted to 

larger diameter pipe by adding an additional hose 

clamp.  

For optimal temperature measurement, follow 

these tips:  

Clean the pipe with an emery cloth or file 

before applying thermal grease and insulate 

the sensor from the effects of ambient air.

The sensing element is the 1.5” square copper 

plate. Applying thermal grease in-between 

the sensor plate and pipe is recommended, 

but not required. 

MOUNTING INSTRUCTIONS

If there is insulation around the pipe, remove a 

section of insulation to accommodate the width 

of the junction box and sensor. The sensor 

should be mounted on the top or side of the 

pipe. Press the sensor copper plate to the 

cleaned pipe surface, and tighten the clamp 

around the pipe. Take care not to overtighten 

clamp to prevent damage to the copper heat 

transfer plate or sensor.  

PLASTIC BOX (-PB)

3.60"

(91.44 mm)

2.25"

(57.15 mm)

GALVANIZED ENCLOSURE (-GD)

2.31"

(58.67 mm)

4.18"

(106.17 mm)

NEMA -4X (-4X)

2.55”

(64.77 mm)

FOAM PAD, WILL COMPRESS

UPON INSTALLATION

ADJUSTABLE

FOAM PAD, WILL COMPRESS

UPON INSTALLATION

ADJUSTABLE

3.70"

(93.98 mm)

FOAM PAD, WILL COMPRESS

UPON INSTALLATION

ADJUSTABLE

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