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Series AVU

Air Velocity Transmitter
Ideal for Building Automation Systems, ±5% FS Accuracy

The Dwyer Series AVU Air Velocity Transmitter
is ideal for a wide range of HVAC measurement and control applications, particularly in complete building control and energy management systems. The Series AVU offers 5% accuracy at a surprisingly low cost, with six units covering ranges from 0-785 fpm to 0-3150 fpm, with either 4-20 mA or 0-10 VDC output.

The Series AVU Transmitter operates by measuring the heat loss from one of the two sensing elements in the air-stream, then calculating the air velocity. Units are virtually immune to drift due to the design of the sensing element, which makes the transmitter accurate over the whole air velocity range.

FEATURES
• 4-20 mA or 0-10 V output versions
• NEMA 6 (IP67) enclosure rating
• AC or DC powered (loop version DC only)
• 5% accuracy
APPLICATIONS
• Supply and exhaust fan tracking
• Clean room systems
• Air pollution studies and manufacturing
• Process control systems

Specifications:
Service: Clean air and compatible, non-combustible gases.
Accuracy: ±5% of full scale.
Response Time (90%): 5 sec (typical).
Temperature Limits: 32 to 122°F (0 to 50°C).
Humidity Limit: 0-90% RH, non-condensing.
Power Requirements:
-A models 24VDC +10% -15%;
-V models 24 VDC or 24 VAC +10% - 15%.
Output Signal: -A models 4-20 mA current loop; -V models 0-10 VDC.
Loop Resistance: (-A models) 700ohms.
Current Consumption: 60 mA +output current.

Max. Start Up Current: 85 mA; 10 V.
Output Current Limit: (-V models) >10 mA.
Electrical Connections: Screw terminal. Cable gland for 4-8 mm wire (16 gauge wire).
Enclosure Rating: NEMA 6 (IP67) except sensing point.
Probe Dimensions: 9.45 x .75˝ (240 x19 mm).
Mounting Orientation: Unit not position sensitive. Probe must be aligned with airflow.
Weight: 8.8 oz (250 g).
Agency Approvals: CE

Download:

Catalog: alt
Installation, Operation Manual:
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