CEN/TC 334/WG 2 - Centre pivot and moving laterals

ISO 11545:2009 specifies an in-field method for determining the uniformity of water distribution in the field from centre-pivot and moving lateral irrigation machines equipped with sprayer or sprinkler nozzles. The calculation of the coefficient of uniformity is also specified.
It is applicable to agricultural irrigation machines for which the water application device is more than 1,5 m above the soil surface and for which the water distribution from successive devices overlaps. It is not applicable to the evaluation of centre-pivot irrigation machines equipped with various corner arm application devices.

This European Standard defines and specifies the minimum performances of the machines. It gives a minimum quality level to which the manufacturers shall refer to. It takes in account the mechanical, electrical, hydraulic and agronomic aspects. This standard is to be applied to fixed and movable center pivots as well as to the different categories of moving laterals. This standard doesn't deal with safety problems; those aspects are treated in EN 909. This standard doesn't deal with specific problems for impact on environment.

This Europeans Standard defines and specifies the different outstanding terms and classifications in the field of center pivots and moving laterals systems, necessary for the understanding of EN 12325-1 and prEN 12325-2. This standard is applicable to fixed and movable pivots, as well as to the different categories of moving laterals.

This part of prEN 12325 gives the technical characteristics of the different components elements of fixed or movable pivot and moving lateral systems to be specified by the supplier : general characteristics (structures, advancing, electrical equipment), hydraulic characteristics and sprinkler characteristics.  This standard can be used as a presentation guideline for machine characteristics when replying to a call for tenders or when making delivery to the customer.

This European standard specifies the test methods in the field.