Dwyer Instruments AVLV-1DM1-LCD | Air velocity transmitter | 1% accuracy | Duct mount | Modbus" communication with LCD display
The Dwyer AVLV-1DM1-LCD is a duct-mount air velocity transmitter combining ±1% accuracy, Modbus RTU/ASCII communication, and a built-in 5-digit LCD for local readings. With four field-selectable velocity ranges, NEMA 4X (IP66) protection, and BTL and CE approvals, it is designed for HVAC and building automation applications where both network integration and on-site visibility are important.
Part Number: AVLV-1DM1-LCD
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Product Overview
The Dwyer AVLV-1DM1-LCD combines high-accuracy air velocity measurement with Modbus communication and a local digital display. The built-in 5-digit LCD allows technicians to check the airflow reading directly at the duct while the transmitter communicates the same measurement to a compatible building management system.
With ±1% accuracy, the AVLV-1DM1-LCD is designed for applications where accurate airflow measurement is important. Four field-selectable velocity ranges are available: 100, 200, 300, and 400 FPM, equivalent to 0.5, 1, 1.5, and 2 m/s.
For building automation integration, the transmitter communicates using Modbus RTU/ASCII. The device presents a 1/8 unit load, allowing multiple devices to share a Modbus network segment. Communication wiring uses a three-wire removable European-style terminal block, while power connections use a separate four-wire removable European-style terminal block. Both support 16–26 AWG wiring.
The local LCD is particularly useful during installation and commissioning. Technicians can check the measured velocity directly at the transmitter without relying exclusively on a connected laptop or BMS interface.
The transmitter is housed in a NEMA 4X (IP66) enclosure and operates from 24 VAC ±20% or 24 VDC ±20%, with maximum current consumption of 60 mA. Operating temperature is 0 to 50°C (32 to 122°F) with 5–95% RH non-condensing humidity.
Typical response time is approximately 4 seconds, reducing to approximately 1 second at constant temperature. The transmitter weighs approximately 6.0 oz (160 g).
The AVLV-1DM1-LCD is suitable for VAV and AHU airflow control, building automation systems, commissioning, and service applications where technicians need both Modbus communication and local display visibility.
Key Benefits
- ±1% accuracy for precise air velocity measurement
- Modbus RTU/ASCII communication for BMS integration
- Built-in 5-digit LCD for local readings and commissioning
- Four field-selectable ranges from 100 to 400 FPM
- NEMA 4X (IP66) enclosure protection
- 24 VAC or 24 VDC power supply
- 1/8 unit load for Modbus network integration
- BTL and CE approvals
- Compact 6.0 oz (160 g) construction
- Genuine Dwyer stock with free Saudi Arabia shipping
Call +966 569 289 544 for pricing and availability.
Who This Product Is Best For
The Dwyer AVLV-1DM1-LCD is suited for:
- Controls contractors working on Modbus-based building automation systems
- HVAC commissioning teams requiring local airflow verification
- VAV box and AHU airflow control applications
- Hospitals, laboratories, and data centres
- Service technicians troubleshooting airflow directly at the duct
- BMS integrators requiring Modbus RTU/ASCII communication
- HVAC projects where accurate airflow measurement and local display are both required
How to Specify & Commission It
- Install the AVLV-1DM1-LCD in the duct using the appropriate probe insertion practice, with the airflow direction parallel to the sensor tip.
- Connect a 24 VAC or 24 VDC power supply.
- Wire the Modbus RTU/ASCII communication connection to the compatible BMS or controller.
- Select the required velocity range: 100, 200, 300, or 400 FPM.
- Check the measured air velocity on the built-in 5-digit LCD.
- Confirm that the BMS receives the corresponding measurement during commissioning.
Frequently Asked Questions
What accuracy does the Dwyer AVLV-1DM1-LCD provide?
The transmitter provides ±1% accuracy across its field-selectable velocity ranges.
What velocity ranges can the AVLV-1DM1-LCD measure?
The available ranges are 100, 200, 300, and 400 FPM, equivalent to 0.5, 1, 1.5, and 2 m/s.
Does the AVLV-1DM1-LCD support Modbus?
Yes. It supports Modbus RTU/ASCII communication for integration with compatible building management systems and controllers.
Does it have a local display?
Yes. The AVLV-1DM1-LCD includes a built-in 5-digit LCD for viewing the air velocity directly at the transmitter.
What is the enclosure rating?
The transmitter has a NEMA 4X (IP66) enclosure rating.
What power supply does it require?
It operates from 24 VDC ±20% or 24 VAC ±20%, with maximum current consumption of 60 mA.
What is the difference between the AVLV-1DM1-LCD and AVLV-1DM1?
The AVLV-1DM1-LCD includes a 5-digit LCD for local readings, while the AVLV-1DM1 does not have a display.
Is there a BACnet version with an LCD?
Yes. The AVLV-1DB1-LCD provides the LCD and ±1% accuracy with BACnet MS/TP communication.
What is the response time?
Typical response time is approximately 4 seconds, or approximately 1 second at constant temperature.
What approvals does the transmitter have?
The AVLV-1DM1-LCD has BTL and CE approvals.
How can I get pricing and delivery information in Saudi Arabia?
Pricing is quote-based. General Tech Services can confirm current availability and delivery details. Call +966 569 289 544.
Request a Quote Today
For pricing, availability, and delivery of the Dwyer AVLV-1DM1-LCD Air Velocity Transmitter, contact General Tech Services.
Call: +966 569 289 544
Shipping: Free Saudi Arabia shipping
