Dwyer Series AVUL Air Velocity Transmitter

Part Number: AVUL Categories: ,

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The Series AVUL Air Velocity Transmitter quickly and accurately measures air velocity or volumetric flow in imperial or metric units. Simultaneous current and voltage outputs on all models provide universal inputs to monitoring equipment while the output range, units, and 0 to 5/10 VDC output can be configured via local DIP switches. The optional integral display, or the portable remote display tool, provide a convenient way to locally monitor process values and configure the unit.

Models are available in 3% and 5% accuracy models to suit a variety of needs, and the optional BACnet MS/TP or Modbus® RTU/ASCII communication protocol allows units to be daisy-chained while providing access to all of the velocity and flow data, as well as additional information such as air temperature.

Dwyer Instruments, Inc. was recognized for excellence in product design in the 14th annual Dealer Design Awards Program sponsored by The Air Conditioning Heating & Refrigeration News magazine (The ACHR News). An independent panel of contractors acted as judges in the contest that had 81 entries. The company’s Series AVUL Air Velocity Transmitter was the Gold Award Winner in the Testing and Monitoring product category. The ACHR News is the leading trade magazine in the heating, ventilating, air conditioning, and refrigeration industries.

Product Applications

  • VAV systems
  • Building ducts

Service : Clean air and non-combustible, compatible gases.

Wetted Materials : Consult factory.

Range : 1000, 2000, 3000, 4000 FPM (5, 10, 15, 20 m/s); field selectable.

Accuracy : ±(5% of reading + 0.2 m/s) or ±(3% of reading + 0.2 m/s) @ standard conditions, depending on sku.

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 to 20 mA, 0 to 5 VDC, 0 to 10 VDC.

Response Time (90%) : 10 s, typical.

Zero & 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 baud rates: 9600, 19200, 38400, 57600, 76800, 115200. (optional)Device Load:1/8th 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).

Agency Approval:BTL, CE.

  • Sensing elements have been coated with an engineered conformal coating to ensure durability and longevity
  • Field selectable ranges can be quickly configured without power to the unit

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