HVAC equipment designers face mounting challenges to create more accurate systems that consume far less energy. These pressures are most acute in the commercial market where air handling systems play a major role in HVAC design. Sensors make HVAC air handling systems more efficient by measuring air flow and pressure for effective air distribution. Their critical role means selecting the correct sensor is essential to ensure maximum HVAC system performance and occupant comfort.

This paper focuses on the two technologies that have proven their worth for differential pressure measurement in HVAC applications: piezoresistive (diaphragm-based) sensors and thermal (flow-based) sensors. The paper reviews the strengths and weaknesses of both technologies to help design engineers make the best sensor selections. Download now.