Air Velocity Sensor
This 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.
It records the air velocity as a measured value and converts it to an active
DC 0...10 V or 4…20 mA output signal. Three measuring ranges are available 0...5 m/s, 0...10 m/s, and 0...15 m/s.
The sensor measures a point, i.e., it measures the values at a specific location in the flow profile. For recording the mean air velocity in the duct, the sensor's immersion depth is the key measure. The immersion depth depends on the flow profile.