The Wilcoxon Research Model 731A, ultra-high sensitivity industrial seismic accelerometer is designed for measuring both seismic and ultra-low level, low frequency vibration on structures and objects. Offered with a noise performance rating of 0.5 µg rms and with a sensitivity of 10 V/g, the unit incorporates use of ultra low-noise electronics for clear signals at sub micro-g levels. The sensor is designed to reliably operate over a temperature range of +14°F to +149°. — Meggitt Sensing Systems
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.