Dwyer Instruments AVLV-2DA1 | Air velocity transmitter | 2% accuracy | Duct mount | Universal current/voltage outputs
The Dwyer AVLV-2DA1 is a duct-mount air velocity transmitter designed for HVAC applications requiring standard analog signals. It provides ±2% accuracy with selectable 4-20 mA, 0-5 VDC or 0-10 VDC outputs, allowing direct connection to compatible DDC controllers and BMS inputs without a communication gateway.
Part Number: AVLV-2DA1
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Product Overview
The Dwyer AVLV-2DA1 air velocity transmitter is designed for VAV, AHU and other HVAC airflow-control applications where the connected controller handles measurement display and control. Instead of using a dedicated communication protocol, the transmitter provides standard analog outputs that can be connected directly to compatible controller inputs.
The transmitter provides ±2% accuracy across four field-selectable velocity ranges: 100, 200, 300 or 400 FPM, equivalent to 0.5, 1, 1.5 or 2 m/s. Its typical response time is approximately 4 seconds, reducing to approximately 1 second at constant temperature, making it suitable for standard VAV and AHU control loops.
The AVLV-2DA1 provides universal analog output selection between 4-20 mA, 0-5 VDC and 0-10 VDC. The current output supports loads up to 1100 Ω, while the voltage output requires a minimum load of 1 kΩ. This makes the transmitter suitable for controller and BMS input stages that accept standard current or voltage signals.
This version has no onboard display, so measurements are viewed at the connected controller or BMS. The sensing element also features a conformal coating for long service life.
A NEMA 4X (IP66) enclosure protects the electronics in typical HVAC installation environments. The transmitter operates from 24 VAC ±20% or 24 VDC ±20%, with maximum current consumption of 60 mA. Operating temperature is 32 to 122°F (0 to 50°C) with 5 to 95% RH, non-condensing. The unit weighs approximately 6.0 oz (160 g) and carries BTL and CE approvals.
For applications requiring local readings at the transmitter, the AVLV-2DA1-LCD adds a built-in 5-digit LCD. For applications requiring tighter accuracy, the AVLV-1DA1 provides 1% accuracy with the same analog-output concept.
Key Benefits
- ±2% accuracy for duct-mounted air velocity measurement
- Selectable 4-20 mA, 0-5 VDC and 0-10 VDC analog outputs
- Direct connection to compatible analog-input controllers and BMS systems
- Four field-selectable velocity ranges from 100 to 400 FPM
- NEMA 4X (IP66) enclosure
- No onboard display for centrally monitored installations
- 24 VAC or 24 VDC power supply
- Compact 6.0 oz (160 g) construction
- BTL and CE approvals
- Genuine Dwyer stock with free Saudi Arabia shipping
Who This Product Is Best For
The Dwyer AVLV-2DA1 is suited for controls contractors, BMS integrators, HVAC professionals and commissioning teams working with analog-input DDC controllers.
It is particularly useful for VAV box and AHU airflow control, retrofit projects where the controller does not provide BACnet or Modbus connectivity, and installations where airflow readings are monitored directly at the controller rather than at the transmitter.
How to Specify & Commission It
- Confirm that the ±2% accuracy and selected velocity range meet the airflow-monitoring requirements.
- Mount the AVLV-2DA1 in the duct using the appropriate probe arrangement, with airflow parallel to the sensor tip.
- Connect a 24 VAC or 24 VDC power supply within the specified tolerance.
- Wire the selected analog output to the compatible controller or BMS input.
- Select the required velocity range: 100, 200, 300 or 400 FPM.
- Select the required output type: 4-20 mA, 0-5 VDC or 0-10 VDC.
- Verify the signal and measured airflow at the controller during commissioning.
Frequently Asked Questions
What accuracy does the Dwyer AVLV-2DA1 provide?
The AVLV-2DA1 provides ±2% accuracy across its field-selectable velocity ranges.
What velocity ranges can the AVLV-2DA1 measure?
The transmitter can be configured for 100, 200, 300 or 400 FPM, equivalent to 0.5, 1, 1.5 or 2 m/s.
What outputs does the AVLV-2DA1 provide?
It provides selectable 4-20 mA, 0-5 VDC and 0-10 VDC analog outputs.
Does the AVLV-2DA1 have a local display?
No. The AVLV-2DA1 has no onboard display. Measurements are transmitted through the selected analog output and viewed at the connected controller or BMS.
What is the enclosure rating?
The transmitter has a NEMA 4X (IP66) enclosure rating.
What power supply does the AVLV-2DA1 require?
It operates from 24 VAC ±20% or 24 VDC ±20%, with maximum current consumption of 60 mA.
What is the difference between the AVLV-2DA1 and AVLV-2DA1-LCD?
The AVLV-2DA1 provides the analog outputs without a display, while the AVLV-2DA1-LCD adds a built-in 5-digit LCD for local readings and commissioning.
What is the difference between the AVLV-2DA1 and AVLV-1DA1?
Both use the same analog-output approach, while the AVLV-1DA1 provides 1% accuracy compared with 2% accuracy on the AVLV-2DA1.
How can I get pricing and delivery information?
Pricing is quote-based. For current availability and delivery information, contact General Tech Services at +966 569 289 544. Free Saudi Arabia shipping is available.
Request a Quote Today
For pricing, availability or technical assistance with the Dwyer AVLV-2DA1 air velocity transmitter, contact General Tech Services.
Call: +966 569 289 544
Website: generaltechshop.sa
