oSIST prEN ISO 16122-3:2023

SLOVENSKI STANDARD
oSIST prEN ISO 16122-3:2023
01-marec-2023
Kmetijski in gozdarski stroji - Kontrola škropilnikov v uporabi - 3. del: Navpični
jamborni škropilniki in podobne naprave (ISO/DIS 16122-3:2022)
Agricultural and forestry machinery - Inspection of sprayers in use - Part 3: Sprayers for
bush and tree crops (ISO/DIS 16122-3:2022)
Land- und Forstmaschinen - Kontrolle von in Gebrauch befindlichen
Pflanzenschutzgeräten - Teil 3: Geräte für Raumkulturen (ISO/DIS 16122-3:2022)
Matériel agricole et forestier - Contrôle des pulvérisateurs en service - Partie 3:
Pulvérisateurs pour cultures arbustives et arboricoles (ISO/DIS 16122-3:2022)
Ta slovenski standard je istoveten z: prEN ISO 16122-3
ICS:
65.060.40 Oprema za nego rastlin Plant care equipment
oSIST prEN ISO 16122-3:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 16122-3:2023

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oSIST prEN ISO 16122-3:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 16122-3
ISO/TC 23/SC 6 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2022-12-26 2023-03-20
Agricultural and forestry machinery — Inspection of
sprayers in use —
Part 3:
Sprayers for bush and tree crops
Matériel agricole et forestier — Contrôle des pulvérisateurs en service —
Partie 3: Pulvérisateurs pour cultures arbustives et arboricoles
ICS: 65.060.40
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 16122-3:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022

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oSIST prEN ISO 16122-3:2023
ISO/DIS 16122-3:2022(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 16122-3
ISO/TC 23/SC 6 Secretariat: AFNOR
Voting begins on: Voting terminates on:

Agricultural and forestry machinery — Inspection of
sprayers in use —
Part 3:
Sprayers for bush and tree crops
Matériel agricole et forestier — Contrôle des pulvérisateurs en service —
Partie 3: Pulvérisateurs pour cultures arbustives et arboricoles
ICS: 65.060.40
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2022
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on STANDARD UNTIL PUBLISHED AS SUCH.
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
IN ADDITION TO THEIR EVALUATION AS
or ISO’s member body in the country of the requester. BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
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STANDARDS MAY ON OCCASION HAVE TO
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POTENTIAL TO BECOME STANDARDS TO
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WHICH REFERENCE MAY BE MADE IN
Reference number
Email: copyright@iso.org
NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 16122-3:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
  © ISO 2022 – All rights reserved
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022

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oSIST prEN ISO 16122-3:2023
ISO/DIS 16122-3:2022(E)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements and method of verification . 1
4.1 General . 1
4.2 Leaks and dripping . 2
4.2.1 Static leaks . 2
4.2.2 Dynamic leaks. 2
4.2.3 Spraying and dripping on parts . 2
4.3 Pump(s) . 2
4.3.1 Capacity . 2
4.3.2 Pulsations . 3
4.3.3 Air chamber . 3
4.4 Spray mix agitation . . 3
4.4.1 Hydraulic . 3
4.4.2 Mechanical . 3
4.5 Spray tank(s) . 3
4.5.1 Lid . 3
4.5.2 Tank filling strainer . 4
4.5.3 Pressure compensation . 4
4.5.4 Tank content indicator(s) . 4
4.5.5 Tank emptying . . 4
4.5.6 Tank filling . 4
4.5.7 Induction hopper . 4
4.5.8 Cleaning device for plant protection product containers . 4
4.5.9 Cleaning equipment . 5
4.6 Measuring systems, controls and regulation systems . 5
4.6.1 General . 5
4.6.2 Pressure indicator for spray liquid . 5
4.6.3 Other measuring devices . 6
4.6.4 Pressure adjusting devices . 6
4.7 Lines (pipes and hoses) . 6
4.8 Filters . 6
4.8.1 Filter presence . 6
4.8.2 Isolating device . 6
4.8.3 Filter insert changeability . 6
4.9 Nozzles . 7
4.9.1 Nozzle arrangement . 7
4.9.2 Dripping . 7
4.9.3 Switching off . 7
4.9.4 Adjustment . 7
4.9.5 Pressure drop. 7
4.10 Distribution of pressure and spray liquid flow . 7
4.10.1 Spray boom section pressure equalizer . 7
4.10.2 Distribution of spray liquid . 8
4.11 Blower. 9
4.11.1 Condition . 9
4.11.2 Adjustability . 9
4.12 Spray guns and lances (if present) . 9
4.12.1 Trigger . 9
4.12.2 Adjustment of flow rate and angle . 9
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oSIST prEN ISO 16122-3:2023
ISO/DIS 16122-3:2022(E)
5 Test methods . 9
5.1 Test facilities . 9
5.2 Pumps . 10
5.2.1 Pump capacity test . 10
5.2.2 Pump pulsations . 10
5.3 Sprayer´s pressure indicators. 10
5.3.1 Specification of pressure indicators used for verification . 10
5.3.2 Verification method of the sprayer pressure indicator . 11
5.4 Flow meters for controlling the volume/area rate . 11
5.4.1 General . 11
5.4.2 Operating procedure No. 1: Verification by nozzle flow rate measurement . 11
5.4.3 Operating Procedure No. 2: Verification by installing a calibrated flow
meter in the circuit of the sprayer .12
5.5 System for controlling forward speed .12
5.6 Flow rate of the spray nozzles .13
5.6.1 General .13
5.6.2 Measurement with nozzles fitted on the sprayer .13
5.6.3 Measurement with nozzles removed from the sprayer .13
5.6.4 Measurement on spray gun / lance . 13
5.7 Pressure drop . 13
5.8 Pressure variation when the spray is switched off . 14
5.9 Pressure distribution . 14
Annex ZA (informative) Relationship between this European Standard and the essential
health and safety and environmental requirements of Directive 2009/128/EC .15
Bibliography .17
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oSIST prEN ISO 16122-3:2023
ISO/DIS 16122-3:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. 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
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The 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 noted. 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 rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee [or Project Committee] ISO/TC 23, Tractors and
machinery for agriculture and forestry, Subcommittee SC 6, Equipment for crop protection.
This second edition cancels and replaces the first edition ISO 16122-3:2015, which has been technically
revised.
The main purpose of this second edition was to remove errors and resolve contradictions to the
ISO 16119 series which specifies environmental requirements for new sprayers.
The main changes compared to the previous edition are as follows:
— Normative references (updated)
— Terms and definitions (modified)
— Testing the capacity of the spraying pump (modified)
— Tank filling strainer/Filling hole (modified)
— Tank emptying (modified)
— Controls (modified)
— Diameter analogue pressure indicators (modified)
— Maximum error flow-meters for controlling the volume/hectare rate (modified)
— Dripping (modified)
— Spray guns and lances (modified)
— Pump capacity test (modified)
A list of all parts in the ISO 16122 series can be found on the ISO website.
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oSIST prEN ISO 16122-3:2023
ISO/DIS 16122-3:2022(E)
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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oSIST prEN ISO 16122-3:2023
ISO/DIS 16122-3:2022(E)
Introduction
There are two main reasons for the inspection:
— less potential risk of environmental contamination by plant protection products;
— good control of the pest with the minimum possible input of plant protection product.
In order to use plant protection products in agricultural production safely, it is necessary to define the
requirements and test methods for sprayers in use. This is a relevant step after having standardized
minimum requirements for new sprayers, in respect of safety hazards (see ISO 4254-6) and potential
risks of environmental contamination (see ISO 16119 series).
Standardising the requirements and methods for inspection of sprayers in use takes into consideration
not only the original performance of the sprayer but also its use, care and maintenance. This is a logical
link to ensure the continued benefit arising from the supply of new sprayers of good quality.
The inspection of sprayers in use can be a mandatory requirement or adopted on a voluntary basis. In
both cases further requirements, outside the scope of this standard, are necessary for the management
of inspections. These include, for example, requirements for the competence of persons carrying out
inspections and the frequency of inspections.
NOTE National or local regulations may also apply concerning the qualifications and competence of
inspectors.
vii
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oSIST prEN ISO 16122-3:2023

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oSIST prEN ISO 16122-3:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 16122-3:2022(E)
Agricultural and forestry machinery — Inspection of
sprayers in use —
Part 3:
Sprayers for bush and tree crops
1 Scope
This part of ISO 16122, when used together with ISO 16122-1:2015, specifies the requirements and test
methods for the inspection of sprayers for bush and tree crops, when in use.
The requirements relate mainly to the condition of the sprayer with respect to its potential risk for the
environment and its performance to achieve good application.
NOTE Requirements for the protection of inspectors during an inspection are given in ISO 16122-1:2015.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 5681:2020, Equipment for crop protection — Vocabulary
ISO 5682-2:2017, Equipment for crop protection — Spraying equipment — Part 2: Test methods to assess
the horizontal transverse distribution for hydraulic sprayers
ISO 12809:2020, Crop protection equipment — Reciprocating positive displacement pumps and centrifugal
pumps — Test method
1)
ISO 16122-1:2015 , Agricultural and forestry machinery — Inspection of sprayers in use — Part 1: General
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5681:2020 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Requirements and method of verification
4.1 General
Before starting the inspection, the Pre-inspection requirements of ISO 16122-1:2015, 5, shall be met.
nd
1) A new edition of ISO 16122-1 will be published simultaneously with this 2 edition of ISO 16122-3.
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oSIST prEN ISO 16122-3:2023
ISO/DIS 16122-3:2022(E)
4.2 Leaks and dripping
4.2.1 Static leaks
The sprayer shall be filled with water to its nominal capacity.
With the pump not running and the sprayer parked on a level horizontal surface, a visual inspection for
any leakage from the tank, pump and associated pipes shall be carried out and there shall be no visible
leakage from any part of the sprayer.
For tanks with a volume > 2 000 l, water filling may be reduced to half the nominal volume or to 2 000 l,
whichever is the greater. For these cases, an additional visual inspection of the tank shall be carried out
in order to identify any cracks, holes or other damage that can cause leakage.
Compliance shall be checked by inspection.
4.2.2 Dynamic leaks
4.2.2.1 Leak test when not spraying
With the sprayer running at a pressure which is equal to the maximum working pressure specified by
the sprayer manufacturer, or if this is not known, max. 10 bar, with the section valves closed, there shall
be no visible leakage from any part of the sprayer.
Compliance shall be checked by inspection.
4.2.2.2 Leak test while spraying
While spraying at a pressure that is equal to the maximum working pressure recommended by the
sprayer manufacturer, or the nozzle manufacturer for the nozzles mounted on the sprayer if lower,
there shall be no visible leakage from any part of the sprayer or spray boom.
Compliance shall be checked by inspection.
4.2.3 Spraying and dripping on parts
Regardless of the distance between the spray nozzles to the target to be sprayed, in the range between
the nozzles and the target surface, no liquid shall be sprayed directly on to the sprayer itself (e.g. parts of
the sprayer, hoses). This does not apply if needed by function (e.g. sensors) and if dripping is minimised.
Compliance shall be checked by inspection and function test.
4.3 Pump(s)
4.3.1 Capacity
The pump capacity shall be suited to the needs of the sprayer.
a) The pump capacity shall be at least 90 % of its original nominal flow given by the sprayer
manufacturer or another minimum pump capacity given by the sprayer manufacturer measured
at free outlet of the pump (with the lowest possible pressure) and with a pressure of the pump of
8-10 bar.
Compliance shall be checked by measurement according to 5.2.1.1.3.
b) Or, alternatively, in case method a) is not possible on sprayers not fitted with a test adapter, when
the pump capacity is not given by the sprayer manufacturer for the pump mounted on the sprayer
or for pumps for which the maximum working pressure is not known e.g. for sprayer build before
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oSIST prEN ISO 16122-3:2023
ISO/DIS 16122-3:2022(E)
EN-ISO 16119-1, published in 2013, the pump(s) shall have sufficient flow rate capacity in order to
be able to spray while maintaining a visible agitation as specified in 4.4.1 or 4.4.2.
Compliance shall be checked following 5.2.1.1.2.
4.3.2 Pulsations
The pulsations shall not exceed ±10 % of the working pressure (excluding peristaltic metering pumps).
Compliance shall be checked by measurement and function test according to 5.2.2.
4.3.3 Air chamber
If an air chamber is present the membrane shall not be damaged, there shall be no appearance of liquid
when operated at the maximum pressure recommended by the sprayer manufacturer. The air pressure
shall be the pressure recommended by the sprayer manufacturer or between 30 % and 70 % of the
working pressure for the nozzles in use.
Compliance shall be checked by function test and measurement.
4.4 Spray mix agitation
4.4.1 Hydraulic
A clearly visible agitation shall be maintained:
— when spraying at the maximum working pressure as recommended by the sprayer or nozzle
manufacturer (whichever is the lower);
— with the largest nozzles mounted on the sprayer;
— with pump rotation speed as recommended by the sprayer manufacturer;
...