1、 1 ISO 7749-1:1995Agricultural irrigation equipment Rotating sprinklers Part 1: Design and operational requirements(IDT) , ()INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION(ISC) 7749-1200442004/42, - 1.092 . - 1.297 . , . , , -, 1 - - ()2 , 3 , (- 25 26 2004 .) : ( 3166) 00497 (
2、3166) 00497 AZAMBYGEKZKGMDRUTJTMUZ - 4 7749-1:1995 . . 1. (ISO 7749-1:1995 Agricultural irrigation equipment Rotating sprinklers Part 1: Design and operational requirements). - , - B5 28 2006 . 45- 7749-12004 1 2008 .6 ( ) - . () , . - , 2006 -, II 7749-12004 1 Agricultural irrigation equipment. Rot
3、ating sprinklers. Part 1. Design and operational requirements1 - , . -, , , - .2 , . - . , , - , . . . 7-1:1994 . 1. , 2859-1:1989 . 1. (AQL) - 3951:1989 - 7749-2:1990 . -. 2. 3 :3.1 (rotating sprinkler): , .3.2 (nozzle): , .1 7749-12004 20080101 1 - . , .3.3 (equivalent nozzle diameter): - , . 2 .3
4、.4 (minimum effective pressure) pmin: , , , - 0,2 , , , (. 1).3.5 (maximum effective pressure) pmx: , , -, 0,2 , , , (. 1).3.6 (range of effective pressure): (pmin)(pmax) , (. 2).3.7 (test pressure): - (3.6), .3.8 (nominal flowrate): , , .3.9 (radius of throw): , , 0,25 / 75 / 0,13 /2 7749-120041 ;
5、2; 3 1 2 , 75 /; , . 3 - .3.10 (effective diameter of coverage): (3.9).3.11 (trajectory height): - .3.12 (trajectoryangle):, - .3.13 (normal trajectory angle): 20 .3.14 (low trajectory angle): 20.3.15 (sprinkler spacings): .3.16 (coefficient of distribution uniformity; CDU): - , , - . 4 CDU 7749-2.3
6、.17 (wind speed): . 5 7749-2.3.18 (irrigation lateral): ( , , ), - , .3.19 (water distribution curve): , - , , - .3.20 (part-circle sprinkler): - , - ( ), .3.21 (pop-up sprinkler): , - , . 6 , , , . , , .3.22 (collector): , .3.23 (ambient temperature): 15 C 30 C.4 4.1 . , ,. , - , . - , (UV), . - , .3 7749-120044.2 4.2.1 ( ) . , - , , .4.2.2 - , . , (. 4.3) , . -(,.),- .4.2.3 , , .4.3 7-1. , 7-1.4.4 , , -.4.4.1 - : pmin pmax .4.4.2 7.6 10.5 5.1 5.1.1 20 . , , 1. 1 ,44.14.24.34.466.16.26.36.46.5 - - 33333333333000000000004 7749-12004 1,7 3 07.1 7.2 39517.3 2 07.4 2 07.5 ( )207.6 2 08 2 0
