ISO 15727:2020
(Main)UV-C devices — Measurement of the output of a UV-C lamp
UV-C devices — Measurement of the output of a UV-C lamp
This document specifies the measurement of the output of a UV-C lamp, types of UV-C lamp, lamp ballast, and safety issues. It is applicable to the output measurement of linear UV-C disinfection lamps. This document specifies a measurement method for evaluating output power of UV-C lamps installed in heating, ventilation and air conditioning (HVAC) systems. The method includes the simulation measurement of UV-C output power of UV-C lamps under various temperatures and various air velocities, and under conditions that the axial direction of the lamp is parallel or perpendicular to the air flow direction. It can reliably evaluate and compare the UV-C output power of UV-C lamps in the ultraviolet germicidal irradiation (UVGI) device based on the testing results. If the microbial inactivation rate of a particular UVGI device equipped with the same type of UV-C lamp is known, the microbial inactivation rate of the UVGI device at various temperatures and at various air velocities can be evaluated.
Dispositifs UV-C — Mesurage de la sortie d'une lampe UV-C
General Information
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 15727
First edition
2020-01
UV-C devices — Measurement of the
output of a UV-C lamp
Dispositifs UV-C — Mesurage de la sortie d'une lampe UV-C
Reference number
©
ISO 2020
© ISO 2020
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ii © ISO 2020 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Types of UV-C lamps and ballasts . 2
4.1 General . 2
4.2 Types of UV-C lamps . 2
4.2.1 General. 2
4.2.2 Linear UV-C lamps . 3
4.3 Type of ballasts . 3
4.3.1 General. 3
4.3.2 Magnetic ballasts . 3
4.3.3 Electronic ballasts . 4
5 Measurement of the output of a UV-C lamp . 4
5.1 Measurement method classification . 4
5.2 Measurement of the output of a UV-C lamp in a darkroom . 4
5.2.1 Instrument . 4
5.2.2 Calibration . 5
5.2.3 UV-C radiation power calculation . 5
5.2.4 Necessary conditions . 6
5.2.5 Measurements . 6
5.3 Measurement of the output of a UV-C lamp in a test chamber .10
6 Safety issues .10
6.1 General .10
6.2 Protective clothing and eyewear .10
6.3 UV-C photodegradation of organics .10
6.4 Ozone production .10
6.5 UV-C internal and external leakage .10
6.6 Mercury content of the UV-C lamp .11
6.7 Personal protective equipment.11
Annex A (informative) Suggested methods to minimize the effects of reflected UV-C .12
Annex B (normative) Measurement of the output of a UV-C lamp in a test chamber.13
Bibliography .20
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
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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).
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This document was prepared by Technical Committee ISO/TC 142, Cleaning equipment for air and
other gases.
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iv © ISO 2020 – All rights reserved
Introduction
The First World Health Organization (WHO) Global Conference on Air Pollution and Health took place
at WHO headquarters in Geneva, Switzerland from 30 October to 1 November 2018. The conference
participants considered the scientific evidence on air pollution and health and emphasized: Air
pollution — both ambient and household — is estimated to cause 7 million deaths per year; 5,6 million
deaths are from noncommunicable diseases and 1,5 million from pneumonia. There is an urgent need
to scale up the global response to prevent diseases and deaths (available at http:// www .who .int/ phe/
news/ clean -air -for -health/ en/ ).
Research shows that indoor air pollution can be 2 to 5 times greater than outdoor pollution and under
particular circumstances; it can be up to 100 times. Since people generally spend more than 80 % to
90 % of our time indoors, the quality of indoor air pollution is a key element to good health of people.
At the same time, indoor air pollution is one of 5 environmental risk factors to the public health. Under
most indoor environments, microbial suspension in the air is the chief culprit to transmitted diseases
and it is a factor that many people ignore because these organisms, whose body size is ranging from
several micrometres to more than 10 micrometres, are invisible to the naked eye.
In recent years, these germs bring much more intense effect, including frequent occurrences of sick
building syndrome, elevated nosocomial infection rate, rapid increase of air-conditioning energy
consumption (a microbe film a few millimetres thick accumulates on the air conditioner coil, reducing
the heat transfer efficiency of the air treatment unit), smelly air-conditioned rooms and resurgence
of tuberculosis. Many people have a drop in their own productivity and spend more on medical care
because headache, chest congestion, disturbance in respiration, neurasthenia, nausea and state of mind
are fidgety are the most common symptoms for people staying in the air-conditioned rooms. In addition,
people in air-conditioned rooms are more susceptible to the infection of ophthalmic and nasitis.
Meanwhile, clinical medical evidence suggests that various diseases, such as heart disease,
neurasthenia, memory decline and influenza, correlate with polluted indoor air. The improvement of
indoor air quality is desperately needed.
Ultraviolet air disinfection devices are invented in such circumstances. Most ultraviolet air disinfection
devices circulate the air indoors. With media filtration and a high-efficiency UV-C lamp, disinfection
devices have good effects of filtration of dust in air, meanwhile, it can kill germs and viruses directly
and cut the spread of disease. Disinfection devices application can reduce indoor air pollution, improve
indoor air quality and provide protection against pneumonia, influenza and other respiratory diseases.
INTERNATIONAL STANDARD ISO 15727:2020(E)
UV-C devices — Measurement of the output of a UV-C lamp
1 Scope
This document specifies the measurement of the output of a UV-C lamp, types of UV-C lamp, lamp
ballast, and safety issues.
It is applicable to the output measurement of linear UV-C disinfection lamps.
This document specifies a measurement method for evaluating output power of UV-C lamps installed
in heating, ventilation and air conditioning (HVAC) systems. The method includes the simulation
measurement of UV-C output power of UV-C lamps under various temperatures and various air
velocities, and under conditions that the axial direction of the lamp is parallel or perpendicular to
the air flow direction. It can reliably evaluate and compare the UV-C output power of UV-C lamps in
the ultraviolet germicidal irradiation (UVGI) device based on the testing results. If the microbial
inactivation rate of a particular UVGI device equipped with the same type of UV-C lamp is known, the
microbial inactivation rate of the UVGI device at various temperatures and at various air velocities can
be evaluated.
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 15858, UV-C Devices — Safety information — Permissible human exposure
ISO 29464:2017, Cleaning of air and other gases — Terminology
ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories
CIE S 017, International Lighting Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 29464, CIE S 017 and the
following 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 htt
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