Differential pressure is a simple signal with outsized value: it reveals clogging filters, airflow imbalance, duct leakage, fan performance drift, and containment failures before they become costly downtime. In this article, I break down the top 20 industrial monitoring applications for the Ellenex PDT2—spanning HVAC and IAQ, data centers, cleanrooms, process vessels, pipelines, and facility operations. If you’re building a predictive maintenance program or modernizing instru