Design and the Development of an Anemometer Positioning System

Abstract

Measurement of air flow through a fan is required during routine testing of several student projects using an existing two-metre-long wind tunnel at the University. Measurements of air velocity uses a handheld weather kit anemometer which is connected to a data logger. Inaccuracies in holding the equipment resulted in the basis of a project. This paper investigates and reviews the findings of the project, based on designing, prototyping, and evaluating a suitable system to hold the anemometer and allow positioning of it at any desired position within the cross-section of the wind tunnel. A rail system allows the anemometer to be positioned in the Z-axis for shorter wind tunnels, or in close proximity to fans without the tunnel or ducting. The paper shows the methodology of the design process, the development of a working prototype and the implementation of the initial readings.