AVT (QC2345 or earlier)

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

Can be replaced with AVT.


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:
• 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 or 4...20 mA (linear to °C)
Output signal 2: 0...10 V or 4...20 mA (linear to m/s)
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 length 50...180 mm, mounting flange included
Protection standard: IP54

AVT (QC2345 or earlier)



Product series

Air velocity transmitter, measuring ranges 0...2 / 0...10 / 0...20 m/s


with display
without display


With relay
Without relay