Exploring new sensing horizons with the SDP8xx
Three innovative concept applications show how the SDP8xx unlocks compact, robust, and energy-efficient solutions for future air and flow sensing challenges.
Cost-Effective Airflow Monitoring with SDP8xx and Bernoulli Ring
In ventilation systems and appliances like industrial dryers or HVAC units, maintaining a steady airflow is essential for performance and energy efficiency. However, traditional flow sensors can be expensive and complex to integrate. As a conceptual application, we're exploring the use of our SDP8xx differential pressure sensor combined with a simple Bernoulli ring to create a robust and cost-effective airflow measurement solution. Mounted at the blower inlet, the ring generates a pressure difference proportional to the air volume flow, which the SDP8xx accurately detects. This setup could offer a reliable alternative to classical flow sensors—simpler to implement, more affordable, and with the potential to support predictive maintenance and consistent performance, even in challenging conditions.
Differential Pressure-Based Windspeed Metering with Venturi Disk
In smart homes and commercial buildings, windspeed sensors are used to protect outdoor equipment like sunshades. Today’s standard solutions—mechanical anemometers or ultrasonic sensors—each come with trade-offs: anemometers are low-cost but wear out over time, while ultrasonic sensors are durable yet expensive. This concept explores a novel, cost-effective approach using Sensirion’s SDP8xx differential pressure sensor combined with a specially designed 2D Venturi disk. The design leverages the Venturi effect—typically seen in pipes—but applies it in two dimensions. As air flows through the constriction in the disk, the pressure drop is measured by the SDP8xx sensor and converted into windspeed, with no moving parts required. This setup offers a unique combination of reliability, compact size, and low power consumption—making it especially suitable for discreet installation on building facades. Its simple mechanical design is inherently resistant to dirt and can be enhanced with a low-cost filter ring for even greater robustness. While still in the concept phase, this approach could offer a scalable and more sustainable alternative to conventional windspeed metering in future smart infrastructure applications.
Reimagining Filter Monitoring with Pitot Tube Innovation
In HVAC and air purification systems, filter health is essential to ensure clean air delivery. Traditionally, filter clogging is monitored by measuring the pressure drop across the filter – a method that serves a single purpose. This concept proposes a more versatile and insightful approach: using an averaging Pitot tube and a Sensirion SDP8xx differential pressure sensor to measure air speed downstream of the filter. This setup not only detects clogging (as reduced flow) but also provides real-time airflow data, enabling smarter system control and improved energy efficiency. Compared to classic point sensors, an averaging Pitot tube offers greater robustness against turbulent flows, requires no individual calibration, and—combined with the SDP8xx—delivers high sensitivity even at very low airspeeds (down to 0.2 m/s). The setup is compact, low-power, and ideal for modern air handling units. This is a cost-effective, scalable idea made openly available under Sensirion’s Open Hardware license for commercial adaptation.