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| Overview

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

Placed holder for unboxing and installation Video.

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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.   

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| 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 1-wire protocol 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 1-wire bus to provide an extensible sensor network. 

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  • Connect the power and communication wire, from the master device's 3-wire sensor 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.

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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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