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The AVT is an electronic air velocity and temperature transmitter for air and non-combustible gases with optional relay output.

AVT series air velocity transmitters are engineered for building
automation in the HVAC/R industry. The AVT measures air velocity and
temperature, with field selectable range and output options in a
single device. Designed with a duct mount probe and adjustable
collar suitable for round or rectangular ducts.

AVT series devices include:
• 3 field selectable measurement ranges for air velocity, selectable via jumper.
• Separate readings and outputs for air velocity and temperature.
• Proportional output options include: voltage (0–10 V) and current (4–20 mA).

AVT series device options offer:
• Backlit display
• Field adjustable relay


Technical details

Accuracy: < 0.2 m/s + 5 % (Range 0...2 m/s)
< 0.5 m/s + 5 % (Range 0...10 m/s)
< 1.0 m/s + 5 % (Range 0...20 m/s)
Measuring units: m/s, °C
Supply voltage: 24 VDC ±10 % / 24 VAC ±10 %
Power consumption: 35 mA (50 mA with relay) + 40 mA with mA-outputs
Output signal 1: 0...10 V (linear to °C), L min 1 kΩ or
4...20 mA (linear to °C), L max 400 Ω
Output signal 2: 0...10 V (linear to m/s), L min 1 kΩ or
4...20 mA (linear to m/s), L max 400 Ω
Optional relay output: Potential free SPDT 250 VAC, 6 A / 30 VDC, 6 A with adjustable switching point and hysteresis
Operating temperature: 0...+50 °C
Probe: Adjustable immersion lenght 50...190 mm, mounting flange included
Protection standard: IP54