ISO 3182:2022
(Main)Light measuring system for smoke emission testing
Light measuring system for smoke emission testing
This document specifies a measuring system that enables the determination of the transmittance and the optical density of smoke emission tests under laboratory conditions. This document also provides the calibration method for the system. This document is an English-language version of DIN 50055, with minor editorial modifications.
Système de mesure de la lumière pour les essais d’émission de fumée
General Information
- Status
- Published
- Publication Date
- 31-May-2022
- Technical Committee
- ISO/TC 92/SC 1 - Fire initiation and growth
- Current Stage
- 6060 - International Standard published
- Start Date
- 01-Jun-2022
- Due Date
- 19-Dec-2022
- Completion Date
- 31-May-2022
Overview
ISO 3182:2022 specifies a light measuring system designed for accurate smoke emission testing in laboratory conditions. The standard defines a methodology to determine the transmittance and optical density of smoke generated during thermal decomposition. By establishing consistent calibration methods for the system, ISO 3182:2022 ensures reliable, repeatable measurement results vital for fire safety research and material testing.
This standard is an English-language adaptation of the earlier German standard DIN 50055, incorporating minor editorial updates. It is developed by ISO Technical Committee ISO/TC 92, Subcommittee SC 1, focused on fire initiation and growth.
Key Topics
Smoke Emission Tests
Designed to assess smoke levels generated when materials thermally decompose, these tests require an integrated light measuring system, a controlled decomposition environment, and a measurement chamber or duct.Light Measuring System Components
The light measuring system includes:- A light source producing a nearly parallel light beam using a gas-filled tungsten incandescent lamp (approximately 2900 K).
- A light receiver with an achromatic lens and silicon photodiode equipped with spectral filters to simulate human photopic eye sensitivity.
- A power supply providing stabilized direct current for lamp operation within ±0.5% stability.
- A voltage or current measuring device with gain adjustment to convert light attenuation into transmittance and optical density values.
Measurement Parameters
- Transmittance (τ): The ratio of transmitted radiant flux to incident radiant flux, indicating how much light passes through smoke.
- Light Attenuation (S): Percentage loss in light intensity due to absorption and scattering by smoke particles.
- Optical Density (D): The logarithmic measure of smoke concentration defined by the inverse of transmittance.
Calibration Procedures
Calibration involves setting the illumination level, centering the light beam, and verifying system accuracy using neutral density glass filters with known optical densities. The calibration ensures measurement deviation remains within ±5% or ±0.01 optical density units, maintaining high accuracy.System Design Guidance
Details concerning sizing the light beam diameter for various distances and requirements for temperature compensation of the photo detector improve measurement precision. Filters and apertures adjust the illumination to accommodate different test setups.
Applications
ISO 3182:2022 is essential in industries and laboratories focused on fire safety testing, materials engineering, and environmental health monitoring:
Fire Safety Testing
Used to evaluate smoke production characteristics of construction materials, textiles, plastics, and composites under controlled burn scenarios, supporting compliance with fire safety regulations.Material Development
Assists manufacturers in screening materials for low-smoke generation properties to improve fire performance.Environmental Monitoring
Provides data on particulate emissions generated by combustion processes in various sectors, aiding pollution control and health risk assessment.Research Laboratories
Enables scientific investigations into combustion chemistry and fire behavior by providing standardized optical density data.
Related Standards
- ISO 13943 – Fire safety vocabulary, including terms for smoke and optical measurements.
- DIN 50055 – Original German specification for light measuring systems in smoke testing.
- DIN 5036-1 – Radiometric and photometric properties of materials, definitions, and characteristics.
- ISO 11664-2 – Colorimetry standard for illuminants, relevant for calibrating spectral responses.
- ISO/CIE 19476 – Performance characterization of illuminance and luminance meters.
- DIN 5031-3 – Optical radiation physics and units used in photometric measurements.
By adhering to ISO 3182:2022, laboratories and manufacturers can achieve precise, harmonized smoke emission measurements contributing to improved fire safety standards and material evaluations globally.
Frequently Asked Questions
ISO 3182:2022 is a standard published by the International Organization for Standardization (ISO). Its full title is "Light measuring system for smoke emission testing". This standard covers: This document specifies a measuring system that enables the determination of the transmittance and the optical density of smoke emission tests under laboratory conditions. This document also provides the calibration method for the system. This document is an English-language version of DIN 50055, with minor editorial modifications.
This document specifies a measuring system that enables the determination of the transmittance and the optical density of smoke emission tests under laboratory conditions. This document also provides the calibration method for the system. This document is an English-language version of DIN 50055, with minor editorial modifications.
ISO 3182:2022 is classified under the following ICS (International Classification for Standards) categories: 13.220.40 - Ignitability and burning behaviour of materials and products. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase ISO 3182:2022 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 3182
First edition
2022-05
Light measuring system for smoke
emission testing
Système de mesure de la lumière pour les essais d’émission de fumée
Reference number
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Devices . 2
4.1 Design and main connection settings . 2
4.2 Light source . 2
4.3 Light receiver . 2
4.4 Power supply . 3
4.5 Voltage or current-measuring device . 3
5 Calibration .4
5.1 Setting the illumination level . 4
5.2 Checking the light measuring system . 4
Bibliography . 6
iii
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 ISO/TC 92, Fire safety, Subcommittee SC 1, Fire
initiation and growth.
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.
iv
INTERNATIONAL STANDARD ISO 3182:2022(E)
Light measuring system for smoke emission testing
1 Scope
This document specifies a measuring system that enables the determination of the transmittance and
the optical density of smoke emission tests under laboratory conditions. This document also provides
the calibration method for the system.
This document is an English-language version of DIN 50055, with minor editorial modifications.
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 13943, Fire safety — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 13943 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...