SIEMENS QVM62.1 – air velocity sensor is used to control the air velocity to a constant value, or to balance out pressure fluctuations (supply or extract air control), or to monitor the flow in air ducts. It primarily is used for modulating fan control in primary plants to set the basic volume flow.

SIEMENS Duct sensor for air velocity QVM62.1 

For measuring air velocities or volumetric flow in air ducts. Suited for primary plant (presetting thevolumetric flow).
Sensor detached, ready wired, including pipe extension for different immersion lengths and mountingflange.

Operating voltage: AC / DC 24 V
Power consumption: 5 VA
Measuring range 0...10 m/s;0...15 m/s;0...5 m/s
Measurement accuracy At 20 °C, 45 % r.h., 1013 hPa: ±0.65 m/s
Connection, electrical :Screw terminals
Cable length: 1 m
Immersion length: 30...300 mm
Analog output, signal: DC 0...10 V  DC 4...20 mA
Degree of protection: IP42
Dimensions (W x H x D): 86 x 43 x 117 mm