SIST EN 13966-1:2003

Determination of the transfer efficiency of atomising and spraying equipment for liquid coating materials - Part 1: Flat panels

This EN specifies a laboratory procedure for determining the transfer efficiency of atomising and spraying equipment for the application of liquid coating materials onto flat panels. This standard applies to determination of the transfer efficiency of atomising and spraying equipment, such as: - air atomising spray guns (conventional high air pressure); - high volume low pressure spray guns (HVLP); - low volume low pressure spray guns (LVLP); - airless spray guns (hydraulic pressure); - air assisted airless spray guns; - vibratory or rotary atomising atomising equipment (bells or discs); etc.

Bestimmung des Auftragswirkungsgrades von Spritz- und Sprühgeräten für Beschichtungsstoffe - Teil 1: Flächenbeschichtung

Diese Norm legt ein Laborverfahren zur Bestimmung des Auftragswirkungsgrades von Spritz- und Sprühgeräten zum Aufbringen von flüssigen Beschichtungsstoffen auf Flächen fest. Ein zweiter Teil (noch zu erstellen) wird das Aufbringen von Beschichtungsstoffen auf Teile mit anderen geometrischen Formen abdecken und ein Verfahren zur Ermittlung des Auftragswirkungsgrades von Spritz- und Sprühgeräten mit elektrostatischer Unterstützung liefern.
Diese Norm gilt für die Bestimmung des Auftragswirkungsgrades von Spritz- und Sprühgeräten wie z. B.:
   Konventionelle Druckluft-Zerstäuber (hoher Luftdruck);
   HVLP-Zerstäuber (high volume low pressure);
   LVLP-Zerstäuber (low volume low pressure);
   Airless-Zerstäuber (Hydraulikdruck);
   Luftunterstützte Airless-Zerstäuber;
   Schwingungs- oder Rotations-Sprühgeräte (Glocken);
   Elektrostatisch unterstützte Zerstäuber.
Die Norm enthält zwei Prüfverfahren.
Der Auftragswirkungsgrad, der sich aus der Anwendung dieses Standard-Verfahrens ergibt, drückt die potentielle Leistung von Spritz- und Sprühgeräten zum Vergleich von verschiedenen Typen oder Modellen aus. Der Wert kann in der Praxis erreicht werden oder auch nicht, da die Bedingungen und die Ausführung durch die Bedienungsperson wahrscheinlich anders sind als bei dem Standard-Prüfverfahren.
Der ermittelte Auftragswirkungsgrad ist nur gültig im Zusammenhang mit den Parametern des Prüfdokumentes für die Flächenbeschichtung, siehe Anhang C.

Détermination de l'efficacité de transfert des équipements d'atomisation/pulvérisation pour produits de revetement liquides - Partie 1: Panneaux plans

Ugotavljanje učinkovitosti nanašanja tekočih premaznih snovi razpršilnih in brizgalnih naprav - 1. del: Prekrivanje ploskev

General Information

• Status: Published
• Publication Date: 30-Jun-2003
• ICS: 87.100 - Paint coating equipment
• Technical Committee: VSN - Safety of machinery
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jul-2003
• Due Date: 01-Jul-2003
• Completion Date: 01-Jul-2003
• Ref Project: EN 13966-1:2003 - Determination of the transfer efficiency of atomising and spraying equipment for liquid coating materials - Part 1: Flat panels

Overview

EN 13966-1:2003 is a CEN laboratory standard that defines a reproducible procedure for measuring the transfer efficiency of atomising and spraying equipment when applying liquid coating materials to flat panels. Transfer efficiency is expressed as the percentage of coating solids deposited on the panel relative to the solids delivered by the spray device. The standard covers a wide range of spray technologies - from conventional air atomising and HVLP / LVLP spray guns to airless, air-assisted airless, and rotary (bell/disc) atomisers - and is intended to support reliable comparison, product specification and regulatory compliance.

Key topics and requirements

• Scope and purpose: Laboratory determination of transfer efficiency for flat-panel tests (Part 1); Part 2 will address other geometries and electrostatic support.
• Test methods: Two methods are specified:
  • Method 1 (indirect) - determines delivered mass from fluid flow rate (flow meter or gravimetric calculation).
  • Method 2 (direct) - measures delivered mass gravimetrically by weighing the atomiser before and after application within the test area.
• Repetition & reporting: At least three independent consecutive tests; report the mean value. If any result deviates by more than ±1% from the mean, investigate and repeat.
• Sample preparation & coating properties: Follow EN ISO 1513 and EN 21512 for sampling and preparation. Measure and report solids content (EN ISO 3251), viscosity, density and other relevant properties; mixed multi‑component materials must meet pot‑life and ageing limits specified in the standard.
• Environmental & rig conditions: Record temperature, relative humidity, barometric pressure and air velocity/direction in the spray zone. Use a test rig with a background panel and aluminium foil test sheet; control atomiser-to-panel distance, stroke speed and spray pattern.
• Measurements & calculations: Film drying/curing, weighing of coated sheets, pattern uniformity, and calculation formulas (examples in Annex B). Measurement tolerances are given in Annex A and a test summary form in Annex C.

Practical applications / Who uses it

• Spray equipment manufacturers and R&D teams validating spray gun efficiency and product performance.
• Independent test laboratories performing standardized transfer efficiency testing.
• Coating formulators and applicators (industrial painters, automotive, aerospace) comparing application methods (HVLP vs airless).
• Specifiers, procurement and regulatory bodies assessing environmental and occupational safety claims related to coating material usage and overspray reduction.

Related standards

• EN 971-1 (terms and definitions for coating materials)
• EN 1953 (safety of atomising and spraying equipment)
• EN ISO 3251 (solid content determination)
• EN ISO 1513 / EN 21512 (sampling and sample preparation)
• Other referenced ISO standards for density, viscosity and flow time

EN 13966-1:2003 provides a clear, repeatable laboratory framework for comparing spray systems and optimizing economic and environmental performance through validated transfer efficiency data.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bestimmung des Auftragswirkungsgrades von Spritz- und Sprühgeräten für Beschichtungsstoffe - Teil 1: FlächenbeschichtungDétermination de l'efficacité de transfert des équipements d'atomisation/pulvérisation pour produits de revetement liquides - Partie 1: Panneaux plansDetermination of the transfer efficiency of atomising and spraying equipment for liquid coating materials - Part 1: Flat panels87.100Oprema za nanašanje premazovPaint coating equipmentICS:Ta slovenski standard je istoveten z:EN 13966-1:2003SIST EN 13966-1:2003en01-julij-2003SIST EN 13966-1:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13966-1April 2003ICS 87.100English versionDetermination of the transfer efficiency of atomising andspraying equipment for liquid coating materials - Part 1: FlatpanelsDétermination de l'efficacité de transfert des équipementsd'atomisation/pulvérisation pour produits de revêtementliquides - Partie 1: Panneaux plansBestimmung des Auftragswirkungsgrades von Spritz- undSprühgeräten für Beschichtungsstoffe - Teil 1:FlächenbeschichtungThis European Standard was approved by CEN on 28 November 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13966-1:2003 ESIST EN 13966-1:2003

Measurement tolerances.16Annex B (informative)
Example calculations.17Annex C (content and structure normative; lay-out informative) Test summary form for flat panelcoating.18Bibliography.20SIST EN 13966-1:2003

values stipulated in health,safety and environmental legislation.1 ScopeThis European Standard specifies a laboratory procedure for determining the transfer efficiency of atomising andspraying equipment for the application of liquid coating materials onto flat panels. A second part (to be prepared)will cover coating material application to other substrate geometries and provide a method for the determination oftransfer efficiency for atomising and spraying equipment with electrostatic support.This standard applies to the determination of the transfer efficiency of atomising and spraying equipment, such as,but not limited to:¾ conventional air atomiser (high air pressure);¾ HVLP-atomiser (high volume low pressure);¾ LVLP-atomiser (low volume low pressure);¾ airless atomiser (hydraulic pressure);¾ air assisted airless atomiser;¾ vibratory or rotary atomiser (bells);¾ electrostatic supported atomiser.Two methods of determination are included in the standard.The transfer efficiency value resulting from the application of this standard procedure expresses the potentialperformance of atomising and spraying equipment for comparison of different types or models. The value may ormay not be attained in use, where the working conditions and operator practice are likely to differ from those of thestandard test method.The determined transfer efficiency is valid only in conjunction with the parameters shown in the test summary form,see annex C.SIST EN 13966-1:2003

Part 1: General terms EN 1953, Atomising and Spraying Equipment for Coating Materials - Safety requirements prEN 12215, Coating plants - Spray booths for application of organic liquid coating materials - Safety requirements prEN 13355, Coating plants - Combined booth – Safety requirements EN 21512, Paints and Varnishes: Sampling of products in liquid or paste form EN ISO 1513, Paints and Varnishes - Examination and preparation of samples for testing.(ISO 1513:1992) EN ISO 2431, Paints and varnishes - Determination of flow time by use of flow cups (ISO 2431:1993, includingTechnical Corrigendum 1:1994). EN ISO 3219, Plastics - Polymers/resins in the liquid state or as emulsions or dispersions - Determination ofviscosity using a rotational viscometer with defined shear rate (ISO 3219:1993) EN ISO 3251, Paints and varnishes - Determination of non-volatile matter of paints, varnishes and binders forpaints and varnishes (ISO 3251:1993) ISO 2811-1, Paints and varnishes - Determination of density - Part 1: Pyknometer method ISO 2811-2, Paints and varnishes - Determination of density - Part 2: Immersed body (plummet) method ISO 2811-3, Paints and varnishes - Determination of density - Part 3: Oscillation method ISO 2811-4, Paints and varnishes - Determination of density - Part 4: Pressure cup method ISO 2884, Paints and varnishes - Determination of viscosity using rotary viscometer ISO 9944, Plastics; phenolic resins; determination of electrical conductivity of resins extracts3 Terms and definitionsFor the purposes of this standard, the terms and definitions given in EN 971-1 apply. For the purposes of thisstandard, the following terms and definitions also apply:3.1application timetime during which coating material is applied to the test sheet during the transfer efficiency test3.2atomising and spraying equipmentany type of device which can be used to atomise coating materials. Atomising may be achieved by air,hydromechanically (airless) with or without air assistance, or by centrifugal forces such as rotating bells or discs, asdefined in EN 19533.3background panelrigid plate placed behind the test sheet to support it and enable a flat surface to be obtainedSIST EN 13966-1:2003

the mean value by more than +/- 1% the cause of the variation should beinvestigated and the determination repeated. Step Action Reference 1 Record details of atomising and spraying equipment tobe tested. Use the form structure inannex C for recording data. 2 Record details of coating material to be used fortransfer efficiency test. see 6.2.1 3 Sample coating material for the test, thin and/or mixaccording to coating material manufacturerspecification. Record preparation details. see 6.2.2 4 Determine and record coating material solids content,viscosity and density. see 6.2.2 5 Set up the test rig to configure the atomiser, panel andsheet. see 6.4 6 Set atomising and spraying equipment to requiredsettings. see 6.5.2 7 Determine and record atomising and sprayingequipment dynamic parameters and coating materialcharacteristics. Measure the coating material flow rateand spray characteristics. Record coating material andair flow rate, atomiser stroke or test sheet traversespeed, to obtain required film thickness and theminimum/maximum dimensions of the spray pattern. see 6.5, 6.6 and 6.7. 8 Clean, dry and weigh the test sheets. Indelibly label testsheets and record identification numbers and weights. see 6.3 9 Measure and record test environmental conditions. see 6.1 10 Re-determine coating properties (as necessary).
11 Clean atomising and spraying equipment. Charge withcoating material and measure coating materialtemperature. Set equipment parameters and mount inthe test rig.
11a Method 1: Determine fluid flow rate see 6.5.3 11b Method 2: Measure and record initial weight of atomiserand coating material. see 6.10 12 Mount test sheet on background panel and assemble inthe test rig. see 6.3 and 6.4 13 Apply coating material to the test sheet. Record coatingmaterial temperature, application period for each testsheet and the distance between fluid outlet and testsheet. see 6.6 14 Remove the test sheet from the background paneltaking care to avoid loss of coating material.
15 Dry/stove the applied coating film. Record drying/curingtemperature and time. see 6.8 16
Allow the test sheet to cool to ambient temperatureunder clean dry conditions. Weigh the dry coated testsheet and record weight. The mass of deposited solidsis the difference in the weights of the coated anduncoated test sheet.
17a Method 1: Check coating material flow rate see 6.5.3 17b Method 2: Weigh atomising and spraying equipment. see 6.10SIST EN 13966-1:2003
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