Background & ContextThe Automated Weather Observing System (AWOS) at OR Tambo was first installed in 2006. O.R. Tambo International Airport has an existing installed Vaisala AviMet® Automated Weather Observing System to collects, processes, monitors, distributes and archives meteorological data measured by a dedicated set of meteorological sensors located along the runway(s).The Employer's objective and purpose is to Upgrade the field sensors to cater for the latest ICAO ANNEX 3 amendments, WMO-No.8, Volume 1 – Measurements of Meteorological Variables and to replace some of the field sensors t…
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