EN ISO 4892-3:1999
(Main)Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps (ISO 4892-3:1994)
Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps (ISO 4892-3:1994)
Migrated from Progress Sheet (TC Comment) (2000-07-10): UAP was launched on ISO 4892-3:1994 (TA/9806)
Kunststoffe - Künstliches Bestrahlen oder Bewittern in Geräten - Teil 3: UV-Leuchtstofflampenstrahlung (ISO 4892-3:1994)
Dieser Teil von ISO 4892 legt Verfahren fest, bei denen Probeko(rper durch floreßierende UV-Lampen unterschiedlicher Ausfu(hrungen bestrahlt werden. Allgemeine Richtlinien werden in ISO 4892-1 angegeben.
Plastiques - Méthodes d'exposition à des sources lumineuses de laboratoire - Partie 3: Lampes fluorescentes UV (ISO 4892-3:1994)
Polimerni materiali - Metode izpostavitve laboratorijskim virom svetlobe - 3. del: Fluorescentne UV svetilke (ISO 4892-3:1994)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 4892-3:2000
01-maj-2000
Polimerni materiali - Metode izpostavitve laboratorijskim virom svetlobe - 3. del:
Fluorescentne UV svetilke (ISO 4892-3:1994)
Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps
(ISO 4892-3:1994)
Kunststoffe - Künstliches Bestrahlen oder Bewittern in Geräten - Teil 3: UV-
Leuchtstofflampenstrahlung (ISO 4892-3:1994)
Plastiques - Méthodes d'exposition a des sources lumineuses de laboratoire - Partie 3:
Lampes fluorescentes UV (ISO 4892-3:1994)
Ta slovenski standard je istoveten z: EN ISO 4892-3:1999
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 4892-3:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 4892-3:2000
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SIST EN ISO 4892-3:2000
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SIST EN ISO 4892-3:2000
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SIST EN ISO 4892-3:2000
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SIST EN ISO 4892-3:2000
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SIST EN ISO 4892-3:2000
INTERNATIONAL IS0
STANDARD 4892-3
First edition
1994-l o-01
Plastics - Methods of exposure to
laboratory light sources -
Part 3:
Fluorescent UV lamps
P/as tiques - MBthodes d’exposition 9 des sources lumineuses de
labora toire -
Partie 3: Lampes fluorescentes UV
Reference number
IS0 4892-3: 1994(E)
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SIST EN ISO 4892-3:2000
IS0 4892-3: 1994(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
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. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 4892-3 was prepared by Technical Committee
lSO/TC 61, Plastics, Subcommittee SC 6, Ageing, chemical and environ-
mental resistance.
Together with the other parts of IS0 4892, it cancels and replaces
IS0 4892:1981, which has been technically revised.
IS0 4892 consists of the following parts, under the general title
- Methods of exposure to laboratory light sources:
P/as tics
- Part 1: General guidance
- Part 2: Xenon-arc sources
- Part 3: Fluorescent UV lamps
- Part 4: Open-flame carbon-arc lamps
Annex A of this part of IS0 4892 is for information only.
0 IS0 1994
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
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SIST EN ISO 4892-3:2000
IS0 4892-3: 1994(E)
INTERNATIONAL STANDARD 0 IS0
Plastics - Methods of exposure to laboratory light
sources -
Part 3:
Fluorescent UV lamps
1 Scope 3 Definitions
For the purposes of this part of IS0 4892, the follow-
This part of IS0 4892 specifies methods for exposing
ing definitions apply.
specimens to different types of fluorescent UV lamp.
General guidance is given in IS0 4892-l.
3.1 fluorescent UV lamp: A fluorescent lamp in
which radiant emission in the ultraviolet region of the
spectrum, i.e. below 400 nm, makes up at least
80 % of the total light output.
2 Normative references
3.2 type I fluorescent UV lamp: A fluorescent UV
lamp in which radiant emission below 300 nm is less
The following standards contain provisions which,
than 2 % of the total light output. These lamps are
through reference in this text, constitute provisions
commonly called UV-A lamps.
of this part of IS0 4892. At the time of publication, the
editions indicated were valid. All standards are subject 3.3 type II fluorescent UV lamp: A fluorescent UV
to revision, and parties to agreements based on this lamp in which radiant emission below 300 nm is more
part of IS0 4892 are encouraged to investigate the than 10 % of the total light output. These lamps are
possibility of applying the most recent editions of the commonly called UV-B lamps.
standards indicated below. Members of IEC and IS0
maintain registers of currently valid International
4 General requirements
Standards.
4.1 Specimens are exposed to fluorescent UV
IS0 4582: 1980, Plastics - Determination of changes
lamps under controlled environmental conditions.
in colour and variations in properties after exposure to
There are several different types of fluorescent UV
daylight under glass, natural weathering or artificial
.
lamp (see 3.1 and 3.2). UV-A lamps or combinations
lrgh t .
of UV-A lamps are recommended. When combi-
nations of lamps with different spectral emissions are
IS0 4892-l : 1994, Plastics - Methods of exposure to
used, provision shall be made to ensure uniformity of
laboratory light sources - Part 1: General guidance.
the spectral irradiance at the surface of the speci-
mens, e.g. by continuous repositioning of the speci-
IS0 4892-2: 1994, Plastics - Methods of exposure to
mens around the lamp array.
laboratory light sources - Part 2: Xenon-arc
sources.
4.2 Fluorescent UV lamps use the emission from a
CIE 85: 1989, Technical Report - Solar spectral
low-pressure mercury arc to excite a phosphor that
irradiance.
produces a continuous spectrum in a relatively narrow
1
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SIST EN ISO 4892-3:2000
IS0 4892=3:1994(E)
wavelength interval, which is generally distributed
5.2 Exposure chamber
about a peak wavelength. The spectral distribution of
the radiation from a fluorescent lamp is determined
5.2.1 The design of the exposure chamber may vary,
by the emission spectrum of the phosphor and the
but it shall be constructed from inert material and
UV transmission properties of the glass tube. Fluor-
provide uniform irradiance in conformance with 5.1.3,
escent UV lamps are generally used to expose mate-
with means for controlling the temperature. When
rial to UV radiation in a limited spectral range.
required, provision shall be made for the formation of
condensate or spraying water on to the exposed face
4.3 The procedure may include measurement of the
of the specimen, or controlling the humidity in the
irradiance and radiant exposure at the surface of the
exposure chamber.
specrmen.
5.2.2 Specimens shall be mounted so that the ex-
4.4 It is recommended that a similar material of
posed face is located in the plane of uniform
known behaviour be exposed simultaneously with the
irradiance and is not within 160 mm of the ends of the
experimental material as a reference.
lamps or within 50 mm of the edge of a flat lamp ar-
ray. Lamp replacement, lamp rotation and specimen
rearrangement may be required to obtain uniform ex-
4.5 Comparison of results obtained from specimens
posure of all specimens to UV radiation and tempera-
exposed in different types of apparatus should not be
ture. Follow the manufacturer’s recommendations for
made unless reproducibility has been established
lamp replacement and rotation.
among the various types of apparatus for the material
to be tested.
5.3 Radiometer
5 Apparatus
The use of a radiometer to monitor irradiance and ra-
diant exposure is optional. If a radiometer is used, it
5.1 Laboratory light source
shall conform to subclause 5.2 of IS0 4892-l :1994.
5.1.1 Type I lamps are available with a choice of
5.4 Black-standard/black-panel thermometer
spectral distribution of radiation and vary significantly.
The more common may be identified as UV-A 340,
Black-standard thermometers or black-panel ther-
UV-A 351, UV-A 355 and UV-A 365, these desig-
mometers shall conform to subclause 5.1.5 of
nations representing the characteristic wavelength (in
IS0 4892-l : 1994.
nanometres) of the peak emission. Of these, the
UV-A 340 simulates daylight from 300 nm to 340 nm
better than any other fluorescent UV lamp. When
5.5 Exposure to moisture
combinations of lamps with different spectral emis-
sions are used, provision shall be made for the uni-
formity of the spectral irradiance at the surface of the 5.5.1 In apparatus designed to wet the exposed
specimens, e.g. by continuous repositioni
...
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