Omega AVUL User guide

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SERIES AVUL

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AIR QUALITY

AIR VELOCITY TRANSMITTERS

3% and 5% of Reading Accuracy, Optional BACnet or Modbus® Communication Protocols

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1/2 NPS

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YEAR LIMITED

WARRANTY

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The Series AVUL Air Velocity Transmitters quickly and accurately measures

air velocity or volumetric ow 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, 4-20 mA output can be congured via local DIP switches. The optional integral display, or the portable remote display tool, provide a convenient way to locally monitor process values and congure the unit. Models are available in 3% and 5% of reading 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 ow data, as well as additional information such as air temperature.

BENEFITS/FEATURES

• Minimal preventative maintenance as sensing element is covered with an engineered protective coating

• Easy eld setup via the on board dip switches for range and units

APPLICATIONS

• VAV systems

• Building ducts

• HVAC systems

MODEL CHART Example AVUL -3 D A1 -LCD AVUL-3DA1-LCD Model AVUL Air velocity transmitter Accuracy 5

±(0.2 m/s + 5% of reading) @ standard

conditions

±(0.2 m/s + 3% of reading) @ standard

conditions

Mounting D Duct mount Output A1

Analog universal (0-5 VDC, 0-10 VDC, 4-20

mA) B1 M1

Options FC

Analog + BACnet MS/TP

Analog + Modbus

Factory calibration certicate

GLD

Electrical cable gland

LCD

LCD display

NIST

NIST certicate

Silicone free

RTU/ASCII

SPECIFICATIONS 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 model.

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%): 10 s, typical. Zero and Span Adjustments: Digital push-buttons. Output Load Resistance: Current output: 0 to 1100 Ω max.; Voltage output:

Minimum load resistance 1 k Ω.

Current Consumption: 60 mA max. Display (optional): 5 digit LCD. Electrical Connections (Analog): Power and output: 4-wire removable European

style terminal block for 16 to 26 AWG. Communication (optional): Connections: BACnet MS/TP or Modbus

RTU/ASCII: 3-wire removable European style terminal block for 16 to 26 AWG; Supported baud rates: 9600, 19200, 38400, 57600, 76800, 115200.

Device Load: 1/8th unit load. Electrical Entry: 1/2˝ NPS thread. Accessory (A-151): Cable gland for 5 to 10 mm

diameter cable.

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.

ACCESSORIES Model Description A-151 A-435-A A-AVUL-LCD A-AVUL-MTG SCD-PS

Cable gland for 5 to 10 mm diameter cable Remote display tool Field upgradeable display Replacement mounting ange 100-240 VAC/VDC to 24 VDC power supply

Air Velocity Transmitters

Modbus® is a registered trademark of Schneider Electric USA, Inc.

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