Rockwell Automation 1414-ITXxxxxx_CTXxxxxx Duct Average Temperature Transmitter - Manual (Page 3)

Duct Average-temperature Transmitter 3
Publication 1414-IN004B-EN-P - July 2010
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).
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.
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.
IMPORTANT Do not route signal wires in the same conduit with power cables as signal
degradation may occur.
Note: 6" Bend
Radius
Placement of a 12 ft Duct Average
Sensor in a 48 in. Square Duct
Use Hangers to Secure
Duct Average
Sensors