Dwyer - Air Velocity Transmitter - AVLV Series

Series AVLV | Low Air Velocity Transmitter

Benefits/Features:

• Minimal Maintenance: Equipped with an engineered protective coating on the sensing element, reducing the need for frequent maintenance.
• Easy Setup: Onboard dip switches facilitate simple field setup for range and units, enhancing user convenience.

Applications:

• VAV Systems: Suitable for Variable Air Volume systems to monitor and regulate air flow.
• Building Ducts: Ideal for monitoring air velocity within building ducts for HVAC systems.
• Clean Room Systems: Capable of accurately measuring air velocity in clean room environments to maintain strict quality standards.

Description: The Series AVLV Low Air Velocity Transmitter provides rapid and precise measurements of air velocity or volumetric flow in both imperial and metric units. Featuring simultaneous current and voltage outputs on all models, this transmitter offers universal inputs to monitoring equipment. Configuration of output range, units, and voltage/current output can be conveniently adjusted via local DIP switches. With optional integral display or portable remote tool, local monitoring and unit configuration become effortless. Available in 1% and 2% accuracy models with various low velocity ranges, these transmitters cater to a wide range of needs. Optional communication protocols such as BACnet MS/TP or Modbus® RTU/ASCII enable daisy-chaining of units, providing access to comprehensive velocity and flow data, including air temperature, ideal for quality-intensive environments like the pharmaceutical industry.

Specifications:

• Service: Clean air and non-combustible, compatible gases.
• Wetted Materials: Consult factory.
• Range: 100, 200, 300, 400 FPM (0.5, 1, 1.5, 2 m/s); field selectable.
• Accuracy: See chart.
• Temperature Limits: 32 to 122°F (0 to 50°C).
• Power Requirements: 24 VDC ±20% or 24 VAC ±20%.
• Humidity Limits: 5 to 95% RH, non-condensing.
• Output Signals: 4-20 mA, 0-5 VDC, 0-10 VDC.
• Response Time (90%): 4 s, typical; 1 s at constant temperature.
• Zero and Span Adjustments: Digital push buttons.
• Output Load Resistance: Current output: 0 to 1100 Ω max.; Voltage output: Minimum load resistance 1 kΩ.
• Current Consumption: 60 mA max.
• Display: 5 digit LCD (optional).
• Electrical Connections: Analog: Power and output: four-wire removable European style terminal block for 16 to 26 AWG; Communication: Connections: BACnet MS/TP or Modbus® RTU/ASCII: three-wire removable European style terminal block for 16 to 26 AWG.
• Supported Communication Baud Rates: 9600, 19200, 38400, 57600, 76800, 115200 (optional).
• Device Load: 1/8 unit load.
• Electrical Entry: 1/2˝ NPS thread. Accessory: Cable gland for 5 to 10 mm diameter cable, A-151.
• Enclosure Rating: NEMA 4X (IP66).
• Mounting Orientation: Flow direction must be parallel to the sensor tip.
• Weight: 6.0 oz (160 g).
• Compliance: BTL, CE.

With its advanced features and high accuracy, the Series AVLV Low Air Velocity Transmitter offers precise monitoring capabilities for a wide range of applications, ensuring optimal performance in critical environments.