Dwyer Instruments AVUL-3DM1 | Air velocity transmitter | 3% of reading accuracy | Duct mount | Modbus" communications
A high-velocity duct-mount air velocity transmitter designed for supply and exhaust duct applications, offering 3% of reading accuracy, Modbus RTU/ASCII communication, and a field-selectable velocity range of 1000–4000 FPM (5–20 m/s). Its compact, display-free design is suited to direct integration with BMS and HVAC control systems.
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Part Number-AVUL-3DM1
The Dwyer AVUL-3DM1 is designed for higher-velocity supply and exhaust duct applications where accurate air velocity measurement and digital communication are required. It measures air velocity from 1000 to 4000 FPM (5–20 m/s) with 3% of reading accuracy and communicates through Modbus RTU/ASCII for integration with compatible BMS and HVAC control systems.
The transmitter features a NEMA 4X (IP66) enclosure and is suitable for standard mechanical-room and plenum environments. It operates across 32–122°F (0–50°C) and tolerates 5–95% RH non-condensing conditions.
With a response time of approximately 4 seconds, or approximately 1 second at constant temperature, the AVUL-3DM1 is suitable for real-time AHU and fan-control applications. The transmitter operates on 24 VDC or 24 VAC with a maximum current requirement of 60 mA, making it suitable for both retrofit projects and new HVAC installations.
The AVUL-3DM1 is supplied without an onboard display. Measurements are read through the connected BMS or controller, making this model suitable for installations where local display functionality is not required.
The compact transmitter mounts into a standard duct probe assembly and carries BTL and CE approvals.
For applications requiring local readings during commissioning, the Dwyer AVUL-3DM1-LCD provides the corresponding version with a built-in 5-digit LCD.
Key Benefits
- 3% of reading accuracy for higher-velocity duct applications
- Modbus RTU/ASCII communication for direct BMS integration
- Field-selectable ranges of 1000, 2000, 3000, or 4000 FPM
- Equivalent metric ranges of 5, 10, 15, or 20 m/s
- NEMA 4X (IP66) enclosure for demanding HVAC environments
- Compact design without an onboard display
- 24 VDC or 24 VAC power supply
- Suitable for AHU, supply-air, exhaust-air, and fan-control applications
- BTL and CE approved
Who This Product Is Best For
The Dwyer AVUL-3DM1 is suitable for HVAC controls contractors, BMS integrators, building automation professionals, and facility maintenance teams working with higher-velocity duct systems.
It is particularly appropriate for applications that require accurate air velocity measurement and Modbus RTU/ASCII communication without the need for a local display.
How to Use
- Mount the AVUL-3DM1 in the duct using standard probe insertion practices.
- Connect 24 VDC or 24 VAC power according to the installation requirements.
- Connect the Modbus RTU/ASCII communication interface to the BMS or compatible controller.
- Select the required velocity range: 1000, 2000, 3000, or 4000 FPM.
- Confirm that the transmitted signal is correctly received by the connected BMS.
- Verify system operation during commissioning.
Frequently Asked Questions
What accuracy does the AVUL-3DM1 provide?
The AVUL-3DM1 provides 3% of reading accuracy across its field-selectable velocity ranges.
What velocity ranges can the AVUL-3DM1 be set to?
The transmitter can be configured for 1000, 2000, 3000, or 4000 FPM, equivalent to 5, 10, 15, or 20 m/s.
Does the AVUL-3DM1 support Modbus?
Yes. The AVUL-3DM1 communicates over Modbus RTU/ASCII for direct integration with compatible Modbus-based BMS and HVAC control systems.
What is the enclosure rating of the AVUL-3DM1?
The transmitter has a NEMA 4X (IP66) enclosure rating and is suitable for mechanical-room and plenum installation.
Does the AVUL-3DM1 have a local display?
No. This model does not have an onboard display. Measurements are read through the connected BMS or controller.
What power supply does the AVUL-3DM1 require?
The transmitter operates on 24 VDC or 24 VAC with a maximum current requirement of 60 mA.
Is there an LCD version available?
Yes. The Dwyer AVUL-3DM1-LCD provides the corresponding high-velocity transmitter with a built-in 5-digit LCD for local measurement verification.
Does GeneralTech Shop deliver the AVUL-3DM1 across the UAE?
Yes. Contact GeneralTech Shop at +971 6 5436933 to confirm pricing and delivery availability for your emirate.
Should I choose the AVUL-3DM1 or AVUL-3DM1-LCD?
The AVUL-3DM1 is suitable when readings will be monitored through a BMS or controller without a local display. The AVUL-3DM1-LCD is the alternative when local display readings are required during commissioning or maintenance.
Request a Quote
Ready to order the Dwyer AVUL-3DM1 Air Velocity Transmitter?
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Call: +971 6 5436933
