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Automated Facility for Sprinkler Performance Testing

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Applied Engineering in Agriculture. 6(4): 437-440. (doi: 10.13031/2013.26410) @1990
Authors:   K. J. Hodges, R. G. Evans, L. G. James, M. W. Kroeger, T. W. Ley
Keywords:   Irrigation, Sprinkle irrigation, Sprinkler testing, Sprinkler distribution patterns

An automated facility for measuring the performance of individual irrigation sprinklers is described. This outdoor facility had over 90 commercially available tipping bucket type rain gages to sample application rates and depths throughout the area wet by the test sprinkler. A programmable data logger polled each rain gage every two seconds using a wiring system similar to that of computer keyboards to minimize hardware and electronics. Readings of sprinkler discharge, operating pressure, and water temperature as well as wind speed and direction, air temperature, and dew point temperatures up- and down-wind of the test site were recorded with the data logger. The system was programmed to operate unattended at night and during weekends whenever the wind speed exceeded 2.2 m/s (5 mph). In 358 tests, the system was reliable and easy to operate.

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