The HF3A Duct Mounted Transmitter is designed for direct immersion into ventilation shafts, primary HVAC air ducts, and environmental control plenums. Featuring a long, rigid rear-mounted probe (265.5 mm overall envelope), this variant provides precise, continuous monitoring of high-volume indoor airflows while keeping the main electronics housing safely outside the duct wall.
Equipped with the upgraded Rotronic HygroMer® HT-1 sensor, it offers exceptional resistance to chemical pollutants and long-term stability in high-velocity airflows.
To streamline purchasing and deployment, the HF3A duct mount is offered in 6 standard, highly versatile configurations. These combinations pair two display styles with three distinct wiring and output options that suit most applications:
Customisation Notice: Any alternative physical or electrical configurations outside of these 6 standard models (such as custom probe lengths, alternative voltage scaling, or specialised coatings) are subject to a Minimum Order Quantity (MOQ) of 20 units and are available exclusively upon request. Contact our technical sales team for custom project quotes.
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Frequently Asked Questions
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