| Overview

The Duct Sensor V2.0, an Intelligent-Duct temperature and humidity Sensor (DTH), comprises high-precision sensors pre-calibrated from the factory.

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Apart from a sleek and easy-to-install design and daisy-chaining capabilities, it also provides modular, extendable probe lengths to reach all depths of ducts.   


| Precautions

  • Failing to wire devices with correct polarity when using a shared transformer may damage any devices powered.
  • Mount the sensor in such a way that the tube is in direct line with the breeze or draft.
  • Turn off the power before wiring.
  • Do not allow live wires to touch the circuit boards.
  • Install using all state and local electrical codes.

| Mounting

Mount the Duct sensor into the Airflow duct as shown below.

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The following steps need to be used to achieve an effective installation.

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  • Drill a hole of diameter greater than 18mm for the pipe to enter the Duct.
  • Mount the Duct Sensor using two #8-1.5” self-tapping screws as shown in the figure above.
  • Install the transmitter vertically with the air inlet pipe pointing perpendicular to the duct.

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  • Choose the length of the pipe as per the duct dimension. (The lengths available are 100 and 150mm long)
  • Use the end cap provided to direct the air pitot towards the sensor.
  • Align the arrow on the pipe to the lock symbol and rotate clockwise to secure the position.

  • Rotate the pipes anti-clockwise to separate them. 

| Wiring

The Duct Sensor uses a proprietary sensor bus to communicate with a master device such as a SmartNode, HelioNode, and CM board. In principle, the Duct sensor can be daisy-chained with other sensors on the sensor bus to provide an extensible sensor network. 


  • Connect the power and communication wire, from the master device's sensor bus port to the daisy chain inlet port, as shown above. 
  • Wire more sensors from the outlet port of the Duct sensor, as shown above, using the below wiring harness.


Set the daisy chain setting option to yes or no, if the duct sensor is a terminal device in the bus or not, using the switch shown in the image.

Set the device ID for the sensors, for multiple duct sensors in a bus, using the switch shown in the image.

For more information on daisy chaining capabilities refer to Daisy Chaining Capabilities of Sensors








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