Precise rate control for wide booms
H-SELECT co-ordinates up to four different nozzles at each nozzle body to continually maintain the required target rate across the boom and speed range. This rapid, blended switching between nozzle combinations means H-Select can achieve a target rate accuracy of 90 per cent or better over the entire paddock - virtually eliminating patches of over- or under-dosage.
However the tip-to-tip speed difference across a wide, turning boom is also driving the need for a fast, precise nozzle. The outer tip of a 48.5 m boom travels considerably faster than the inner tip in every turn – leading to significant under- and over-dosing around headlands or any obstacle in the paddock.
HARDI solves the problem by combining multi-tiered spraying with the H-SELECT system. It provides accurate target rate control over the widest possible speed range.
This software automatically calculates the optimum nozzle selection for a desired droplet size, target rate and speed range. Alternatively, operators can specify nozzles or specify fewer than four (keeping one position free for a fertilizer nozzle, for example).
Nozzle Watch then displays nozzle combinations and speed bands, plus overall rate accuracy for the job. Use all four recommended nozzles and that will usually be 90% or above.