Variable Air Volume (VAV) controller

Precise airflow and mass airflow measurement for variable air volume controllers

Variable air volume controllers adjust airflow to individual building zones based on the required demand for ventilation. Sensirion’s differential pressure sensors provide precise and stable airflow feedback for reliable damper control. In demand-controlled ventilation systems, this measurement is essential to deliver the required amount of air while reducing unnecessary ventilation and supporting energy-efficient building operation.

How our VAV controller solutions improve airflow control and energy efficiency

Energy efficient airflow control

Energy-efficient sensor-driven airflow monitoring allows VAV controllers and smart actuators to deliver fresh air based on real-time occupancy and demand. By supplying only the exact volume of air required to each ventilation zone, building automation systems drastically reduce fan power and overall HVAC energy waste.

Using physics for building control

VAV controllers regulate airflow across different building zones. Sensirion’s thermal flow-through differential pressure sensors make use of the Bernouilli effect in applications such as Pitot tubes or Venturi tubes to maintain stable, highly repeatable airflow control without clogging or degradation.

Optimized fresh air supply

Featuring superior zero-point accuracy and zero drift, Sensirion’s SDP8xx series differential pressure sensors guarantee dependable damper control in VAV actuators. This calibration-free accuracy allows HVAC systems to optimize fresh air delivery in direct response to signals from field DCV sensors.

Better performance, better health

Indoor Air Quality (IAQ) directly impacts human health, cognitive function, and workplace productivity. Integrating environmental and differential pressure sensors ensures precise, demand-driven fresh air exchange in tightly sealed, high-performance green buildings.

Sensirion is first choice for leading suppliers worldwide

Sensirion’s SDP differential pressure sensors deliver exceptional low-flow accuracy, long-term stability and zero-drift performance powered by CMOSens® Technology. Engineered for seamless integration into VAV systems, ERVs, furnaces and custom ventilation units, SDP sensors drive efficiency across critical HVAC applications:

Air volume flow measurement: precise dynamic pressure sensing for optimal airflow control
Filter monitoring: accurate differential pressure tracking for predictive filter maintenance
Backdraft control: swift detection of pressure imbalances to prevent reverse airflow
Gas-air mixing: high-precision flow measurement for optimized burner combustion and reduced emissions

Highest energy efficiency

The highly accurate measurement signal resolution and sensitivity at low air flows allows the ventilation system to operate at the lowest pressures, which noticeably increases energy efficiency.

Increasing efficiency

Differential pressure sensors for VAV controllers

SDP8xx

Proven and improved

Trend topic

Indoor air quality

In recent years, a new demand for clean air has developed among many people who value healthy living. When it comes to air quality, most of them rightly are worried about atmospheric pollution, but tend to forget about indoor air pollution.