The Fan-Evaluator measuring station is described in detail in this full-color brochure. The Fan-E uses a combination of sensor locations, honeycomb airflow processing, pneumatic averaging of a large number of sensed airflow pressures, and patented symmetrical averaging to continuously measure fan discharges or ducted airflow with an accuracy of 2% or better. Also included are product specifications, construction features, and installation requirements. —Air Monitor Corporation Santa Rosa, CA