Installation Instructions
Duct Average-temperature
Transmitter
Catalog Numbers 1414-ITX03ACDAA, 1414-ITX02ACDAA, 1414-CTQ03AIEAA,
1414-CTX03PCDAA
Topic
Page
About the Duct Average-temperature Transmitter
1
Important User Information
2
Mount the Duct Average-temperature Transmitter
3
Wire and Connect the Duct Average-temperature
Transmitter
3
Field Calibration
4
Specifications
5
Dimensions
6
About the Duct Average-temperature Transmitter
The multi-point duct average-temperature transmitter incorporates numerous precision RTD
sensors at equal distances. The transmitter is encapsulated in a soft copper probe for long lengths
or a stainless steel probe for shorter lengths. All probes provide excellent heat transfer, fast
response, and moisture-penetration resistance. The transmitter provides a high accuracy signal
with excellent long term stability, low hysteresis, and fast response.
2
Duct Average-temperature Transmitter
Important User Information
Solid-state equipment has operational characteristics differing from those of electromechanical equipment.
Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication SGI-1.1
available from your local Rockwell Automation sales office or online at
http://www.rockwellautomation.com/literature/) describes some important differences between solid-state
equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide
variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy
themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many
variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot
assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,
equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell
Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
WARNING: Identifies information about practices or circumstances that can cause an
explosion in a hazardous environment, which may lead to personal injury or death, property
damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances that can lead to personal
injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid
a hazard and recognize the consequences.
SHOCK HAZARD: Labels may be on or inside the equipment, for example, drive or motor, to
alert people that dangerous voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example, drive or motor, to
alert people that surfaces may reach dangerous temperatures.
IMPORTANT Identifies information that is critical for successful application and understanding of the
product.
Publication 1414-IN004B-EN-P - July 2010
Duct Average-temperature Transmitter
3
Mount the Duct Average-temperature Transmitter
Follow these steps to mount the transmitter.
1. Install the duct average sensors onto hangers in the duct using supplied clamps.
Located the sensors in a straight section of duct away from heating, cooling, or
humidifier elements.
The duct average sensor can be easily shaped to fit any duct size, but observe a minimum
bend radius of six inches to prevent damage to wires or sensors. Duct average elements
are not recommended for high humidity applications.
2. Mounted the duct average temperature transmitter enclosure to the outside of the duct,
where the sensor tubing exits the duct, by using sheet metal screws (not supplied).
Placement of a 12 ft Duct Average
Sensor in a 48 in. Square Duct
Use Hangers to Secure
Duct Average
Sensors
Note: 6" Bend
Radius
Wire and Connect the Duct Average-temperature Transmitter
Follow these steps to wire and connect the transmitter.
1. Connect the transmitter to the controller by using twisted 18…22 AWG wire.
The transmitter requires two wires for DC 4…20 mA loop-powered operation. The use
of shielded cable is optional, but recommended for the highest noise immunity.
IMPORTANT
Do not route signal wires in the same conduit with power cables as signal
degradation may occur.
2. Select the controller Analog Input (AI) to match the transmitter output before power is
applied.
The AI type must be a current input with 250 or 500 ohm impedance. All transmitters
have an operating range of 0…70 °C (32…158 °F). The transmitter board should not be
mounted where temperatures exceed these values. See the connection diagram for more
details.
Publication 1414-IN004B-EN-P - July 2010
4
Duct Average-temperature Transmitter
Typical wiring to a controller is shown in the diagram. For 4…20 mA loop signal, only
the PWR and OUT terminals are used.
2-wire RTD
Sensor
Temperature Transmitter
NEG
Loop Power Supply
SEN
O UT
C OM
+ 24V DC P WR
EXC
Analog Current Input
ANL IN 0 +
SPAN
ANL IN 0 ANL COM
ZERO
Field Calibration
The unit can be calibrated in the field by using precision resistor values equal to the zero and
span of the transmitter temperature range.
1. Disconnect the sensor from the transmitter and connect the resistor that represents the
zero value to the EXC and NEG terminals.
TIP
If the unit uses a three-wire sensor, a jumper must be placed between EXC and
SEN.
2. Adjust the ZERO pot until the desired output is achieved.
3. Connect the resistor that represents the span value to the EXC and NEG terminals.
4. Adjust the SPAN pot until the desired output is achieved.
Repeat these steps until no further adjustment is required.
Publication 1414-IN004B-EN-P - July 2010
Duct Average-temperature Transmitter
5
Specifications
Technical Specifications - Duct Average-temperature Transmitter
Attribute
1414-ITX03ACDAA, 1414-ITX02ACDAA,
1414-CTQ03AIEAA, 1414-CTX03PCDAA
Standard lengths
20 ft
Operating temperature range
0…70 °C (32…158 °F)
Probe type
Flexible copper tube
Wiring connections
Terminal blocks
Enclosures
Plastic ABS - UL94-V - NEMA 1
Aluminum - NEMA 3R
Sensor type
1 KΩ Platinum RTD
Commercial and Hybrid: ±0.3%
Class B Industrial: ±0.2% Class A
Cable
FT-6 plenum rated cable
Probe
304 Stainless steel straight tip, 6.35 mm (0.25 in.) OD
Bendable soft copper tubing, 7.94 mm (0.3125 in.) OD
Output signal
4…20 mA current loop
Transmitter accuracy
±0.1% of span, including linearity
Power supply
15…35V DC
Consumption
Current: 22.5 mA Max. (with open sensor)
PCB operating temperature
0…70 °C (32…158 °F)
Wiring connection
Screw terminal block (14…22 AWG)
TIP
Duct Temperature Averaging has four sensors on < 20 ft probe length and nine
sensors on 24 ft probe length. A rigid, straight, stainless-steel probe is used on
lengths shorter than 36 in.
Publication 1414-IN004B-EN-P - July 2010
6
Duct Average-temperature Transmitter
Available Duct Average-temperature Transmitter, 4…20 mA
Description
Commercial
Hybrid
Plastic
Enclosure
Aluminum Enclosure
457 mm (18 in.) probe
-6.7…48.9 °C (20…120 °F)
Industrial with
cc-pcb
1414-CTQ03AIEAA
457 mm (24 in.) probe
-6.7…48.9 °C (20…120 °F)
457 mm (36 in.) probe
-6.7…48.9 °C (20…120 °F)
609.6 cm (20 ft) tubing 0…50 °C (32…122 °F)
1414-CTX03PCDAA
1414-ITX03ACDAA
1414-ITX02ACDAA
609.6 cm (20 ft) tubing 0…100 °C (32…212 °F)
731.52 cm (24 ft) tubing
0…100 °C (32…212 °F)
731.52 cm (24 ft) tubing
-50…50 °C (-58…122 °F)
731.52 cm (24 ft.) tubing
-50…100 °C (-58…212 °F)
Dimensions
Plastic ABS Enclosure (NEMA 1)
53.6 mm
(2.11 in.)
Conduit Holes
Ø 25. 6 mm (0.85 in.) (2X)
Foam Gasket
Stainless Steel Probe
6.35 mm (0.25 in.) OD
115.8 mm
(4.56 in.)
Various Lengths
Aluminum Enclosure (NEMA 3R)
53.9 mm
(2.12 in.)
Mounting Holes
Ø 5.08 mm (0.2 in.) (2X)
84.3mm
(3.32 in.)
Soft Copper Tubing
7.94 mm (0.3125 in.) OD
25.4 mm
(1.0 in.)
Stainless Steel Probe
6.35 mm (0.25 in.) OD
114.3 mm
(4.50 in.)
72 mm
(2.85 in.)
Various Lengths
Soft Copper Tubing
Conduit Holes 7.94 mm (0.3125 in.) OD
Ø 12.7 mm (0.50 in.) (2X)
Publication 1414-IN004B-EN-P - July 2010
85 mm
(3.35 in.)
96 mm
(3.78 in.)
Duct Average-temperature Transmitter
7
Notes:
Publication 1414-IN004B-EN-P - July 2010
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Installation Assistance
If you experience a problem within the first 24 hours of installation, please review the information that's
contained in this manual. You can also contact a special Customer Support number for initial help in getting your
product up and running.
United States or Canada 1.440.646.3434
Outside United States
or Canada
Use the Worldwide Locator at
http://www.rockwellautomation.com/support/americas/phone_en.html, or contact
your local Rockwell Automation representative.
New Product Satisfaction Return
Rockwell Automation tests all of its products to ensure that they are fully operational when shipped from the
manufacturing facility. However, if your product is not functioning and needs to be returned, follow these
procedures.
United States
Contact your distributor. You must provide a Customer Support case number (call the
phone number above to obtain one) to your distributor to complete the return process.
Outside United States
Please contact your local Rockwell Automation representative for the return
procedure.
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Publication 1414-IN004B-EN-P - July 2010
Supersedes Publication 1414-IN004A-EN-P - October 2005
PN-79832
Copyright © 2010 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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