SIST EN ISO 16119-4:2015

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Land- und Forstmaschinen - Umweltanforderungen an Pflanzenschutzgeräte - Teil 4: Fest installierte und teilbewegliche Geräte (ISO/FDIS 16119-4:2014)Matériel agricole et forestier - Exigences environnementales pour les pulvérisateurs - Partie 4: Pulvérisateurs fixes et semi-mobiles (ISO/FDIS 16119-4:2014)Agricultural and forestry machinery - Environmental requirements for sprayers - Part 4: Fixed and semi-mobile sprayers (ISO/FDIS 16119-4:2014)65.060.40Oprema za nego rastlinPlant care equipmentICS:Ta slovenski standard je istoveten z:FprEN ISO 16119-4kSIST FprEN ISO 16119-4:2014en01-oktober-2014kSIST FprEN ISO 16119-4:2014SLOVENSKI
STANDARD



kSIST FprEN ISO 16119-4:2014



© ISO 2014Agricultural and forestry machinery — Environmental requirements for sprayers —Part 4: Fixed and semi-mobile sprayersMatériel agricole et forestier — Exigences environnementales pour les pulvérisateurs —Partie
zã Pulvérisateurs
Ôixes et semiæmobilesINTERNATIONAL STANDARDPlease see the administrative notes on page iiiReference numberISO/FDIS 16119-4:2014(E)ISO/FDIS16119-4ISO/TC 23/SC 6Secretariat: AFNORVoting begins on: 2014-0Voting terminates on: 2014-0RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPOR TING DOCUMENTATION.IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STAN-DARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.FINALDRAFTkSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E) ii © ISO 2014 – All rights reservedCOPYRIGHT PROTECTED DOCUMENT©
ISO 2014All rights reservedä Unless otherwise speci Ðiedá no part of this publication may be reproduced or utilized otherwise in any form or by any meansá electronic or mechanicalá including photocopyingá or posting on the internet or an intranetá without prior written permissionä Permission can be requested from either ISO at the address below or ISOïs member body in the country of the requester.ISO copyright of ÐiceTel. + 41 22 749 01 11Fax + 41 22 749 09 47Eæmail copyright 7isoäorgWeb www.iso.orgPublished in SwitzerlandkSIST FprEN ISO 16119-4:2014



ISO/CEN PARALLEL PROCESSINGunder the CEN-lead mode of collaboration as de Ðined in the Vienna Agreementä The
Ðinal draft was established on the basis of comments received during a parallel enquiry on the draftäThis
Ðinal draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel twoæmonth approval vote in ISO and two month formal vote in CEN.Positive votes shall not be accompanied by comments.Negative votes shall be accompanied by the relevant technical reasons.ISO/FDIS 16119-4:2014(E) © ISO 2014 – All rights reserved iiikSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E) iv © ISO 2014 – All rights reservedContents PageForeword .v1 Scope .12 Normative references .1uTermsanddeÐinitions .2vListofsigniÐicanthazards .35 Requirements .45.1 Pump/tank unit .45.2 Adjustment of the dose/volume application rate .85.3 Application unit .95.4 Cleaning .135.5 Cleaning device for plant protection product containers .13xVeriÐication .137 Marking .158 Instruction handbook .15Annex A (normative)BackÐlowmeasurementmethodforagitation .17Annex B (normative)VeriÐicationofpulsationsofthepump .19Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EC Directive 2009/127/EC amending 2006/42/EC .20Bibliography .21kSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E)Forewordthrough ISO technical committeesä Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizationsá governmental and nonægovernmentalá in liaison with ISOá also take part in the workä electrotechnical standardizationäThe procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1.
In particular the different approval criteria needed for the different types of ISO documents should be notedä
This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rightsä ISO shall not be held responsible for identifying any or all such patent rightsä
Details of on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO speci Ðic terms and expressions related to conformity assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
Foreword æ Supplementary informationISO
sCEN/TC 144, Tractors and machinery for agriculture and forestry, in collaboration with ISO Technical Committee TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 6, Equipment for crop protection, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).ISO 16119 consists of the following parts, under the general title Agricultural and forestry machinery — Environmental requirements for sprayers:— Part 1: General— Part
xã Horizontal boom sprayers— Part
yã Sprayers for bush and tree crops— Part
zã Fixed and semiæmobile sprayers © ISO 2014 – All rights reserved vkSIST FprEN ISO 16119-4:2014



kSIST FprEN ISO 16119-4:2014



Agricultural and forestry machinery — Environmental requirements for sprayers —Part 4: Fixed and semi-mobile sprayers1 ScopeThis part of ISO
s x s s { speci Ðies requirements and the means for their veri Ðication for the design and performance of
Ðixed and semiæmobile sprayersá as de Ðined in 3.1 and 3.2á with regard to minimizing the potential risk of environmental contamination during useá including misuse foreseeable by the manufacturer.It is intended to be used with ISO
s x s s {æ sá which gives general requirements common to all the sprayer types covered by ISO
s x s s {ä When requirements of this part of ISO
s x s s { are different from those stated in ISO 16119-1, the requirements of this part of ISO 16119 take precedence over the requirements of ISO 16119-1 for machines within the scope of this part of ISO 16119. This part of ISO 16119 does not
This part of ISO
s x s s { is not applicable to sprayers manufactured before the date of its publicationä2 Normative referencesThe following documentsá in whole or in partá are normatively referenced in this document and are indispensable for its applicationä For dated referencesá only the edition cited appliesä For undated EN 837-1, Pressure gauges
Part
wã Bourdon tube pressure gauges
Dimensionsá metrologyá requirements and testingISO 4102:1984, Equipment for crop protection — Sprayers — Connection threadingISO 4254-6:2009, Agricultural
Part
|ã Sprayers and liquid fertilizer distributorsISO 4288:1996, Geometrical Product Speci Ôications
Surface textureã Pro Ôile m Rules and procedures for the assessment of surface textureISO 5681, Equipment for crop
VocabularyISO 5682-1:1996, Equipment for crop protection — Spraying equipment — Part 1: Test methods for sprayer nozzlesISO 5682-2:1997, Equipment for crop protection — Spraying equipment — Part 2: Test methods for hydraulic sprayersISO 5682-3:1996, Equipment for crop protection — Spraying equipment — Part 3: Test method for volume/hectare adjustment systems of agricultural hydraulic pressure sprayersFINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 16119-4:2014(E)© ISO 2014 – All rights reserved 1kSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E)ISO 8169:1984, Equipment for crop protection — Sprayers — Connecting dimensions for nozzles and manometersISO 9357:1990, Equipment for crop p Agricultural s Tank nominal volume and
Ôilling hole diameterISO 9898:2000, Equipment for crop p Test methods for airæassisted sprayers for bush and tree cropsISO 13440:1996, Equipment for crop p Agricultural s Determination of the volume of total residualISO 13457:2008, Agricultural irrigation
Waterædriven chemical injector pumpsISO 16119-1:2013, Agricultural and forestry machinery — Environmental requirements for sprayers — Part 1: GeneralISO 16236, Crop protection e Test method for the determination of drainable volume and its concentrationISO 19932-1:2013, Equipment for crop protection — Knapsack sprayers — Part 1: Safety and environmental requirementsISO 21278-1:2008, Equipment for crop protection — Induction hoppers — Part 1: Test methodsISO 21278-2:2008, Equipment for crop protection — Induction hoppers — Part 2: General requirements and performance limitsISO 22368-1, Crop protection equipment — Test methods for the evaluation of cleaning systems — Part 1: Internal cleaning of complete sprayersISO 22368-3:2004, Crop protection equipment — Test methods for the evaluation of cleaning systems — Part 3: Internal cleaning of tankuTermsanddeÐinitionsFor the purposes of this documentá the terms and de Ðinitions given in ISO
w x z s and the following applyä3.1Ðixedsprayermachine primarily for spraying plant protection products in covered structuresá and where the pump/tank unit (3.3) and/or application unit (3.4) do not move3.2semi-mobile sprayermachine primarily for spraying plant protection products on crops grown in covered structuresá and where the pump/tank unit (3.3) and application unit (3.43.3pump/tank unitdevice comprising at least the pump and the spray liquid tankNote
s to entryã They can be built together as one unit or separate unitsä3.4application unitNote
s to entryã There are sprayers where the application unit moves in the crop rows or over the target moved. 2 © ISO 2014 – All rights reservedkSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E)Note
t to entryã Tapplication unit can be equipped with a fan to provide air to transport the spray droplets to the targetä The controls can be manual or automatic.vListofsigniÐicanthazardsTable 1 speci Ðies the signi Ðicant hazardsá the signi Ðicant hazardous situations and signi Ðicant hazardous
s x s s { that have been identi Ðied by risk assessment as being relevant for this type of machine with regard to environmental contaminationá and which require speci Ðic action by the designer or manufacturer to eliminate or to reduce environmental contaminationäAttention is drawn to the necessity to verify that the environmental requirements speci Ðied in both ISO
s x s s {æ s and this part of ISO
s x s s { apply to each signi Ðicant hazard presented by a given machine and to validate that the risk assessment is complete.TablesListofsigniÐicanthazards HazardHazardousSubclause of
this part of ISO 161194.1SpillagesFilling5.1.3.2; 8Induction of plant protection product5.1.3.2; 5.5 ;84.2Contamination of the water sup-plyFilling5.1.3.2; 5.54.3LeakagesTransport and application5.1.1; 5.1.3.2; 5.1.54.4Over ÐillingFilling5.1.3.2; 5.1.3.4; 84.5Dispersal of spray mix residues or plant protection productsDrainage5.1.2; 5.1.3.3; 5.1.3.4; 8Cleaning and rinsing5.1.3.1;5.1.6; 5.4; 5.5; 84.6Accidental leakagesAccidental opening of tank outlet5.1.3.34.7Over-dosingHeterogeneous mixing5.1.3.5; 5.1.4;5.2.3; 8Overlapping5.3.4.1; 5.3.5.15.1.3.4; 5.1.8; 5.2; 5.3.4.2; 5.3.3; 5.3.6; 5.3.7; 8-vice5.1.8; 7; 8Unintended deposition5.3.4.1; 5.3.4.3; 5.3.3; 5.3.6; 5.3.7.1Direct Injection system5.2.34.8Unintended spraying outside the target areaDeposition outside the target area5.3.4.1; 5.3.5.1; 5.3.8Spraying stop control5.1.8; 5.3.6; 5.3.7.14.9DriftSpraying5.3.4.1; 5.3.5.1; 5.3.84.10Dispersal of spray mixIntervention on the sprayer during application or service5.1.6; 5.1.7; 7; 84.11DrippingSpraying stop control5.3.3 © ISO 2014 – All rights reserved 3kSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E)5 Requirements5.1 Pump/tank unit5.1.1 Static leaksWassociated pipes.5.1.2 Residual volumeThe volume of total residual as de Ðined in ISO
s u v v rã s { { xá
tä s shall not exceedã— 4 % of the nominal tank volume for a tank volume of less than 400 l;— 3 % of the nominal tank volume for a tank volume of between 400 l (included) and 1 000 l (included);— 2 % for a tank volume of more than 1 000 l.The volume of total residual shall be determined in accordance with ISO 13440.5.1.3 Spray tank5.1.3.1 SurfacesThe depth of roughness, Rz
v Rz
¶
s r r
v t z zäFor semiæmobile sprayersá this requirement applies also for the outer walls of the spray tankä5.1.3.2 Filling5.1.3.2.1 Semi-mobile sprayersFilling devices shall be designed to avoid any return of liquid from the spray tank to the
Ðilling supplyäThe
Ðilling hole diameter shall comply with ISO
{ u w yä The opening lid shall seal suf Ðiciently to prevent leakage/spillage when closed, both with the strainer in position and removed. The lid shall be lockable to avoid unexpected opening. If a vent is provided in the lid, spillage shall be avoided.The total tank volume shall be at least 5 % more than the nominal volume, to avoid spillage as a result of over Ðillingä Tanks with a nominal volume greater than
t r r l shall have a nominal volume which is a multiple of 100 l.Strainers shall be installed in
Ðilling openings and shall have a mesh size less than
t mbetween the tank
Ðilling hole and the strainer shall not exceed
t Figure 1).Strainers shall have a minimum depth, dá as given in Table 2 and measured according to Figure 1.The
Ðilling capacity of the tank with strainer when
Ðilled with water shall be at least
s r r lwith a nominal volume of 100 l or more. For tanks with a nominal volume of less than 100 l, it shall be possible to
Ðill the tank within
s minäInduction hoppersá if anyá shall comply with ISO
t s t y zæ tä 4 © ISO 2014 – All rights reservedkSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E)Table 2 — Minimum depth of strainersNominal tank capacityClMinimum depth a)dmmC
¶
s w r60150 < C
¶
v r r100400 < C
¶
x r r150C > 600250a) Measured from the upper edge of the strainer down to its bottom.Dimensions in millimetresKeydMinimum depthFigure 1 — Determination of the depth of the strainer and width of gap(s)5.1.3.2.2 Fixed sprayersFilling devices shall be designed to avoid any return of liquid from the tank to the
Ðilling supplyäA tank cover shall be present to prevent objects falling inä The tank cover may be provided with a
Ðilling holeä Any
Ðilling hole shall be designed in such a way that splashing and spillage of the spray liquid during
Ðilling is avoidedä The tank cover shall be lockable to avoid unexpected openingä © ISO 2014 – All rights reserved 5kSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E)Strainers shall be installed in
Ðilling openings and shall have a mesh size less than
t mbetween the tank
Ðilling hole and the strainer shall not exceed
t Figure 1).Strainers shall have a minimum depth, dá as given in Table 2 and measured according to Figure 1.The total tank volume shall be at least 5 % more than its nominal volume, to prevent spillage as a result of over Ðillingä Tanks with a nominal volume greater than
t r r l shall have a nominal volume which is a multiple of 100 l.The
Ðilling capacity of the tank when
Ðilled with water shall be at least
s r r lvolume of
s r r l or moreä For tanks with a nominal volume of less than
s r r lá it shall be possible to
Ðill the tank within 1 min.Induction hoppersá if anyá shall comply with ISO
t s t y zæ tä5.1.3.3 Tank emptying deviceAn emptying device in accordance with ISO
v t w væ xã t r r {á
wä vä u shall allow the complete emptying of the residual in the tank when the sprayer is in a horizontal positionä Complete emptying of the residual is considered to have been achieved when there are no visible puddles at the bottom of the tank after 5 min drainage.It shall be possible to collect the liquid at the outlet without contaminating the environment or equipment partá eägä staysäThe tank outlet shall be guarded against accidental opening.5.1.3.4 Tank contents indicator(s)The indication of contents shall correspond to ISO
{ u w yä It shall be durable and easily readable from where the tank is
ÐilledäThe acceptable tolerances of the indication are:a) ± 15 % for each graduation mark/read-out for volumes up to 10 % of the nominal tank volume;b) ± 7,5 % for each graduation mark/read-out for volumes from 10 % to 20 % of the nominal tank volume; andc) ± 5 % for each graduation mark/read-out for volumes above 20 % of the nominal tank volume.Other means of visually checking the contents of the tank are allowed if they achieve equivalent accuracyäThe tolerances shall be measured with a maximum error on measurement of
s
¨á with the sprayer in a horizontal positionä5.1.3.5 MixingTanks shall be designed (e.g. including agitators) to ensure an even concentration of mixture.The maximum allowable relative deviation is ± 15 %, tested in accordance with ISO 5682-2:1997, 8.9. When pump back Ðlow is necessary to meet this requirementá the minimum value to meet this requirement shall be measured according to Annex A and speci Ðied in the instruction handbookäNOTE Other procedures for measuring the homogeneity of the spray mixture can be usedá provided that the same accuracy is achievedä 6 © ISO 2014 – All rights reservedkSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E)5.1.4 PumpThe capacity of the pump shall be suited to the needs of the sprayerä The pump shall have suf Ðicient
Ðlow rate capacity in order to be able to spray within the operating limits speci Ðied in the sprayer instruction handbook and maintaining good mixing as speci Ðied in 5.1.3.5.The pump (including air chamber if present) shall not cause pulsations that exceed 5 % of the working pressure, measured on the application unit at nominal rotation speed of the pump at the intended working pressure.Veri Ðication method is given in Annex B.5.1.5 Lines (hoses and pipes)The bending radius of hoses shall be within the limits recommended by the hose manufacturerä Pipes and hoses shall not have any deformation which could disturb the liquid
ÐlowäPressure lines shall be equipped with quick-acting shut-off devices (e.g. tip-over lever valves.The maximum working pressure of hoses and the maximum working pressure of connecting devices shall be at least equal to the maximum working pressure of the circuit. See also ISO 16119-1:2013, Clause 6 h).5.1.6 FiltersSprayers equipped with a positive displacement pump shall have a suction
ÐilteräOn the pressure sideá the liquid
Ðlowing to the nozzles shall be
Ðiltered by means of central
Ðilters or
Ðilters in the lines of boom sectionsä These pressure
Ðilters shall be mounted on the application unit unless the application unit is a spray gun or lance when this requirement does not applyä The size of all
Ðilters shall correspond to the size of nozzles
Ðitted on the sprayeräThe operator shall be able to detect blockagesá for exampleá by an appropriate positioning of the central pressure
Ðilters and pressure indicatoräFilters shall be easily accessible and
Ðilter inserts shall be removableä For quick cleaningá the
Ðilter tissue of the insert shall be easily accessibleäIt shall be possibleá with the spray tank
Ðilled to its nominal volumeá to clean central
Ðilters without any spray liquid leaking out except for that which may be present in the
Ðilter casing and connected suction or pressure lines.5.1.7 Measuring systemsSprayers shall be
Ðitted with a pressure indicator complying with ISO
v t w væ xã t r r {á
wä wä A pressure indicator shall be present on the pump/tank unit.The accuracy of the pressure indicators shall be1):— ± 0,2 bar for working pressures between 1,0 bar (included) and 8 bar (included);— ± 0,5 bar for working pressures between 8 bar and 20 bar (included); and— ± 1 bar for working pressures more than 20 bar.1)
1 bar = 0,1 MPa = 0,1 N / mm2
= 105 N / m2. © ISO 2014 – All rights reserved 7kSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E)The pressure indicator shall be clearly readableä The pressure indication shall be stableä The scale of the pressure indicator shall be marked as follows: every
rá t bar for working pressures less than
w barâ every
sá r bar for working pressures between
w
every
tá r bar for working pressures more than
t r baräUnless otherwise speci Ðied in this part of ISO
s x s s {á each measuring system of the sprayerá eägä for
Ðlow r5.1.3.4), shall be measured within a maximum error of ± 5 % of the true value.5.1.8 Provisions for connecting testing equipmentMeans shall be provided to test the pressure indicator(s): o
v s r tâ or it shall be possible to dismount the pressure indicator from the sprayerá without the need to dismount other parts of the sprayeräMeans shall also be provided to connect a
Ðlow meter between the pump and the pressure regulator without damaging any hoses or removing the couplers from the hosesäIf the sprayer is equipped with a
Ðlow meterá the sprayer shall be equipped with a connecting device allowing the
Ðitting of a test
Ðlow meter without the need to dismount the sprayer
Ðlow meterä5.2 Adjustment of the dose/volume application rate5.2.1 GeneralThe maximum error for all the measurements speci Ðied in 5.2.2, shall be ± 2,5 %.5.2.2 Pressure adjustment devicesPressure adjustment devices shall maintain a constant working pressure at constant revolutions of the the working pressure shall return to its original value within ± 7,5 %.5.2.3 Direct injection system (if provided)For direct injection systemsá the following requirements shall applyã Water driven direct injection pumps shall comply with ISO
s u v w yä F The direct injection system shall employ meansá such as a check valveá to prevent spraying water passing through the direct injection system from entering the plant protection product tank. 8 © ISO 2014 – All rights reservedkSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E) It shall be possible to disassemble and clean those parts of the direct injection system subject to clogging by the plant protection product or by debris in the spraying waterä These parts may be
Ðitted with a sustainable
Ðiltration device accessible for the purpose of cleaningä The injection rate at any inlet pressure shall not deviate by more than ±
s r
¨ from that declared by the manufacturer. The drive water
Ðlow rate shall comply with the
Ðlow declared by the manufacturer within an allowable deviation of ± 10 %. Iother type of direct injection system deviate by more than ± 10 % from the requested and set mixing ratio declared by the manufacturerä Veri Ðication shall be made with the following three mixing ratios: the minimum mixing ratio declared by the manufacturerâ the maximum mixing ratio declared by the manufacturerâ a mixing ratio midway between i and iiä The concentration of applied plant protection product measured in the
Ðlow of spray mix after the plant protection products are injected shall be stable at the set mixing ratio and shall not vary more than ±10 % of this ratio.NOTE cIf separate mixing tanks are providedá they shall comply with 5.1.3.5.5.2.4 Calibration aids l and an accuracy of
¬
tá w
¨ and with a scale marked every
t r 5.3 Application unit5.3.1 ControlsA pressure indicator complying with requirements of 5.1.7shall be present on the application unit.If the application unit is a spray gun or lanceá see 5.3.6.5.3.2 Pressure dropThe pressure drop between the measuring point for spraying pressure on the application unit and at the
¨ of the pressure on the application unit.The pressures shall be measured with a calibrated pressure indicator.Veri Ðication shall be carried out by measurements performed at the maximum
Ðlow rate as indicated by the manufacturer in the instruction handbook.wäuäuNozzlesIt shall be possible to
Ðix nozzles in predetermined positionsá to ensure that the spray is correctly directedá by appropriate means such as markingá locking systems or mouldingsäWhen the spraying stop control has been activatedá there shall be no drippingä © ISO 2014 – All rights reserved 9kSIST FprEN ISO 16119-4:2014



ISO/FDIS 16119-4:2014(E)Veri Ðication of this requirement is by the following testä When the spraying stop control has been activatedá the dripping shall not exceed
t ml per nozzle during a period of
w miná starting
z s after the spraying stop has been activatedäIt shall be possible to measure the
Ðlow rate of each individual nozzleäThe
Ðlow rate of each individual nozzleá measured according to ISO
w x z tæ sá shall not deviate by more than
w
¨ from the data of the nominal
Ðlow rate tables provided with the sprayeräNOTE The requirements are based on the test methods given in ISO
w x z tæ sá primarily developed for hydraulic further investigation and possible amendment of this standard.wäuävHorizontalsprayboom5.3.4.1 Working and spraying section widthsIt shall be possible to adapt the working width of the horizontal spray boom to the width of the intended target by means of shutting off individual nozzles or sections of the boomä5.3.4.2 Height adjustmentIt shall be possible to adjust the minimum distance between the nozzles and the target according to the nozzle characteristicsäFor outdoor useá it shall be possible to adjust the distance between the nozzles and ground down to
rá w má except when the sprayer is designed for special applicationsäThe boom height shall be adjustableá either continuously or by increments not exceeding
rá s mäliquidâ for theseá howeverá dripping shall be minimizedäSpray booms shall be constructed in such a way that will ensure that the boom can be positioned parallel to the target area.When stationary on a level surfaceá the distance between the lower edges of the nozzles and the surface shall not vary more than
z cm or
rá v
¨ of the working widthá whatever is the highestä5.3.4.3 DistributionIf nozzles are used on a boom to provide a uniform spray in the horizontal directioná the transverse volume distribution shall be measured on a
s r r m
wof variation shall not exceed
y
¨ at one boom height and one pressure speci Ðied by the manufacturer for each set of the same nozzle type mounted on the boomä For other boom heights and pressures speci Ðied by the sprayer manufacturerá the coef Ðicient of variation shall not exceed
{
¨ä This shall be measured in accordance with ISO
w x z tæ t for speci Ðied boom heights and pressures onlyä The coef Ðicient of variation shall be calculated in accordance with ISO 5682-3.NOTE Other systems for measuring the transverse volume distribution are allowed if the same accuracy is achieved.For nozzles with overlapping spray patternsá this applies only for those parts of the boom where there is a total overlap.The
Ðlow rate of each nozzle when mounted on the spray boom shall not deviate mor
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