The LPSI/LPS2 Series ultra low-pressure sensors measure +/- 0.1 in. H2O. Based on a MEMS thermo-anemometer, the LPSI/LPS2 Series infers differential pressure from a nano-liters per second gas flow through an integrated airflow channel.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.