To provide information required by designers of irrigation systems, evaluation of the DAN-JET 7200 flow-compensated micro sprinkler was carried out. The sprinklers were submitted to indoor tests at the Hydraulic Lab of the Engineering Department at the Federal University of Lavras, Brazil. During the tests the sprinkler was characterized and the working pressure range proposed by the manufacturer evaluated. This was achieved by determining the following parameters: sprinkler characteristic curve, coefficient of variation, discharge uniformity, distribution uniformity, radial profile of precipitation, and wetted radius. Results from these tests showed that the pressure regulator membrane presents a better performance when working in the range of pressures recommended by the manufacturer. The sprinkler achieved a good classification, in regard the coefficient of variation, with good discharge uniformity in all situations, poor precipitation distribution uniformity, and jet concentration in the range 1.20-2.10 m.
Irrigation; emitter and hydraulics characteristics
