Rating Curves for Adjustable Tricklers

by A. Alajaji, King Faisal Univ, Al-Ahsa, Saudi Arabia,
Otto Helweg, King Faisal Univ, Al-Ahsa, Saudi Arabia,
A. Al-Naim, King Faisal Univ, Al-Ahsa, Saudi Arabia,
S. Al-Barrak, King Faisal Univ, Al-Ahsa, Saudi Arabia,



Document Type: Proceeding Paper

Part of: Irrigation Systems for the 21st Century

Abstract:

This paper presents the approach and results of evaluating adjustable drip/trickle emitters to obtain rating curves. The emitter discharge depends on both system pressure and emitter opening (turns). The tests began at 0. 25 turn and proceed to 2. 5 turns. The pressure was varied from 5 to 40 psi (34 - 276 Kpa). The testing apparatus consisted of 11 tricklers. Each run consisted of three replications. The results showed considerable variance in discharge for pressure less than 10 psi (69 Kpa).



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