SIST EN ISO 11254-3:2006
Lasers and laser-related equipment - Determination of laser-induced damage threshold of optical surfaces - Part 3: Assurance of laser power (energy) handling capabilities (ISO 11254-3:2006)
Lasers and laser-related equipment - Determination of laser-induced damage threshold of optical surfaces - Part 3: Assurance of laser power (energy) handling capabilities (ISO 11254-3:2006)
This part of ISO 11254 describes a test procedure for assurance of power density (energy density) handling capability of optical surfaces, both coated and uncoated. This part of ISO 11254 specifies this procedure by providing two test methods for assurance of the power density (energy density) handling capability of optical surfaces. The first method provides a rigorous test that fulfils requirements at a specified confidence level in the knowledge of potential defects. The second method provides a simple test for an empirically derived test level, allowing an inexpensive test.
Laser und Laseranlagen - Bestimmung der laserinduzierten Zerstörschwelle optischer Oberflächen - Teil 3: Zertifizierung der Belastbarkeit hinsichtlich Laserleistung(-energie) (ISO 11254-3:2006)
Dieser Teil von ISO 11254 beschreibt ein Prüfverfahren für die Zertifizierung der Belastbarkeit hinsichtlich Leistungs¬dichte (Energiedichte) von sowohl beschichteten als auch unbeschichteten optischen Oberflächen.
Dieser Teil von ISO 11254 legt dieses Verfahren fest, indem zwei Prüfverfahren zur Zertifizierung der Leistungsdichte (Energiedichte) angeboten werden.
Das erste Verfahren liefert eine strenge Prüfung, die die Anforderungen bei einem festgelegten Vertrauens¬intervall und bekannten potenziellen Fehlstellen erfüllt.
Das zweite Verfahren bietet eine einfache Prüfung für ein empirisch abgeleitetes Prüfniveau und erlaubt eine kostengünstige Prüfung.
Lasers et équipements associés aux lasers - Détermination du seuil d'endommagement provoqué par laser sur les surfaces optiques - Partie 3: Vérification de la capacité a supporter la puissance (l'énergie) laser (ISO 11254-3:2006)
L'ISO 11254-3:2006 décrit un mode opératoire d'essai permettant de vérifier la capacité des surfaces optiques, triatées ou non traitées, à supporter la densité de puissance (la densité d'énergie).
L'ISO 11254-3:2006 spécifie un mode opératoire en présentant deux méthodes d'essai permettant de vérifier la capacité des surfaces optiques à supporter la densité de puissance (la densité d'énergie).
La première méthode présente un essai rigoureux satisfaisant aux exigences à un niveau de confiance spécifié en matière de connaissance des défauts potentiels.
La seconde méthode est un essai simplifié de niveau d'essai dérivé de façon empirique, donc peu coûteux.
Laserji in laserska oprema - Določanje praga poškodbe na optični površini, povzročene z laserjem - 3. del: Zagotavljanje zmožnosti ravnanja z lasersko energijo (ISO 11254-3:2006)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 11254-3:2006
01-december-2006
/DVHUMLLQODVHUVNDRSUHPD'RORþDQMHSUDJDSRãNRGEHQDRSWLþQLSRYUãLQL
SRY]URþHQH]ODVHUMHPGHO =DJRWDYOMDQMH]PRåQRVWLUDYQDQMD]ODVHUVNR
HQHUJLMR ,62
Lasers and laser-related equipment - Determination of laser-induced damage threshold
of optical surfaces - Part 3: Assurance of laser power (energy) handling capabilities (ISO
11254-3:2006)
Laser und Laseranlagen - Bestimmung der laserinduzierten Zerstörschwelle optischer
Oberflächen - Teil 3: Zertifizierung der Belastbarkeit hinsichtlich Laserleistung(-energie)
(ISO 11254-3:2006)
Lasers et équipements associés aux lasers - Détermination du seuil d'endommagement
provoqué par laser sur les surfaces optiques - Partie 3: Vérification de la capacité a
supporter la puissance (l'énergie) laser (ISO 11254-3:2006)
Ta slovenski standard je istoveten z: EN ISO 11254-3:2006
ICS:
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
SIST EN ISO 11254-3:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN ISO 11254-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2006
ICS 31.260
English Version
Lasers and laser-related equipment - Determination of laser-
induced damage threshold of optical surfaces - Part 3:
Assurance of laser power (energy) handling capabilities (ISO
11254-3:2006)
Lasers et équipements associés aux lasers - Détermination Laser und Laseranlagen - Bestimmung der laserinduzierten
du seuil d'endommagement provoqué par laser sur les Zerstörschwelle optischer Oberflächen - Teil 3:
surfaces optiques - Partie 3: Vérification de la capacité à Zertifizierung der Belastbarkeit hinsichtlich Laserleistung(-
supporter la puissance (l'énergie) laser (ISO 11254-3:2006) energie) (ISO 11254-3:2006)
This European Standard was approved by CEN on 19 August 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11254-3:2006: E
worldwide for CEN national Members.
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EN ISO 11254-3:2006 (E)
Foreword
This document (EN ISO 11254-3:2006) has been prepared by Technical Committee ISO/TC 172
"Optics and optical instruments" in collaboration with Technical Committee CEN/TC 123 "Lasers
and photonics", the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by March 2007, and conflicting national
standards shall be withdrawn at the latest by March 2007.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 11254-3:2006 has been approved by CEN as EN ISO 11254-3:2006 without any
modifications.
2
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INTERNATIONAL ISO
STANDARD 11254-3
First edition
2006-09-01
Lasers and laser-related equipment —
Determination of laser-induced damage
threshold of optical surfaces —
Part 3:
Assurance of laser power (energy)
handling capabilities
Lasers et équipements associés aux lasers — Détermination du seuil
d'endommagement provoqué par laser sur les surfaces optiques —
Partie 3: Vérification de la capacité à supporter la puissance (l'énergie)
laser
Reference number
ISO 11254-3:2006(E)
©
ISO 2006
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ISO 11254-3:2006(E)
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ii © ISO 2006 – All rights reserved
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ISO 11254-3:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Symbols and units of measurement. 3
5 Sampling. 3
6 Test method. 4
6.1 Principle. 4
6.2 Apparatus . 4
6.3 Preparation of test specimens . 6
6.4 Test procedures . 6
7 Accuracy. 9
8 Test report . 9
Annex A (informative) Test report example. 12
Annex B (informative) Usage notes. 16
Annex C (informative) Details of the derivation of the operating characteristic curve. 19
Bibliography . 22
© ISO 2006 – All rights reserved iii
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ISO 11254-3:2006(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
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.
ISO 11254-3 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 9,
Electro-optical systems.
ISO 11254 consists of the following parts, under the general title Lasers and laser-related equipment —
Determination of laser-induced damage threshold of optical surfaces:
⎯ Part 1: 1-on-1 test
⎯ Part 2: S-on-1 test
⎯ Part 3: Assurance of laser power (energy) handling capabilities
iv © ISO 2006 – All rights reserved
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ISO 11254-3:2006(E)
Introduction
Optical components can be damaged by laser irradiation of sufficiently high energy or power density. At any
specified laser irradiation level the probability of laser damage is usually higher for the surface of a component
than for its bulk. Thus the limiting value of an optical component is usually given by the damage threshold of
its surface.
This document provides a test procedure for obtaining consistent measurement results, which may be used
for acceptance tests or may be compared between different testing laboratories.
This testing procedure is applicable to all combinations of different laser wavelength and pulse length
durations. Comparison of laser damage threshold data may be misleading unless the measurements have
been taken at identical wavelengths and pulse lengths.
© ISO 2006 – All rights reserved v
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INTERNATIONAL STANDARD ISO 11254-3:2006(E)
Lasers and laser-related equipment — Determination of
laser-induced damage threshold of optical surfaces —
Part 3:
Assurance of laser power (energy) handling capabilities
SAFETY PRECAUTIONS — Some laser and optical components are made of materials which are toxic
if vaporized (e.g. ZnSe, GaAs, CdTe, ThF , chalcogenides, Be, Cr, Ni). Due care shall be taken not to
4
damage these materials without taking suitable safety precautions.
1 Scope
This part of ISO 11254 describes a test procedure for assurance of power density (energy density) handling
capability of optical surfaces, both coated and uncoated.
This part of ISO 11254 specifies this procedure by providing two test methods for assurance of the power
density (energy density) handling capability of optical surfaces.
The first method provides a rigorous test that fulfils requirements at a specified confidence level in the
knowledge of potential defects.
The second method provides a simple test for an empirically derived test level, allowing an inexpensive test.
2 Normative references
The following referenced documents are indispensable for the application 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 10110-7:1996, Optics and optical instruments — Preparation of drawings for optical elements and
systems — Part 7: Surface imperfection tolerances
ISO 11145, Optics and photonics — Lasers and laser-related equipment — Vocabulary and symbols
© ISO 2006 – All rights reserved 1
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ISO 11254-3:2006(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11145 and the following apply.
3.1
surface damage
any permanent laser radiation-induced change of the surface characteristics of the specimen, which can be
observed by an inspection technique described in this part of ISO 11254
3.2
1-on-1 test
test programme that uses one shot of laser radiation on each unexposed site on the specimen surface
3.3
S-on-1 test
test programme that uses S shots on each unexposed site on the specimen surface
3.4
target plane
plane tangential to the surface of the specimen at the point of intersection of the test laser beam propagation
axis with the surface of the specimen
3.5
effective pulse duration
τ
eff
ratio of total pulse energy to peak pulse power
3.6
assurance level
φ
energy density/power density/linear power density of the laser radiation incident on the optical surface at
which the component is tested
3.7
assurance area
A
φ
area over which the value of the energy density H(x,y,z) is equal to or greater than the assurance level, φ
3.8
confidence level
γ
complement of the probability of successful completion of the assurance test
3.9
effective beam diameter
twice the square root of the assurance spot area divided by pi (π)
See Table 1 for symbols and units.
P
d = 2 (1)
φ,eff
πE
max
3.10
flat-top beam
beam that has a broad area of nearly constant peak intensity (or fluence)
2 © ISO 2006 – All rights reserved
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ISO 11254-3:2006(E)
4 Symbols and units of measurement
Table 1 — Symbols and units of measurement
Symbol Unit Term
λ nm wavelength
α rad angle of incidence
p 1 degree of polarization
τ ns, µs, ms, s pulse duration
H
τ ns, µs, s effective pulse duration
eff
Q J pulse energy
P W peak pulse power
pk
P W power
2
H J/cm maximum energy density
max
2
E W/cm maximum power density
max
F W/cm maximum linear power density
max
d mm separation of test sites
sep
γ 1 confidence level
R 1 risk of false assurance
f 1 fraction of test area to be exposed
test
N 1 number of damage initiation sites
d
2 2
φ J/cm , W/cm , W/cm assurance level
2
A cm assurance area
φ
2
A cm area to be tested
test
N 1 number of sites in tested area to be interrogated
TS
Ω 1 horizontal overlap
x
Ω 1 vertical overlap
y
5 Sampling
This part of ISO 11254 provides a procedure that will give a high level of confidence to the power density
(energy density) handling capability of the component tested.
It may be used in a wide variety of applications, including: non-destructive inspection, witness sampling, lot
sampling and sub-aperture inspection. The level of confidence that the component does not contain a defect
with a lower damage threshold than the acceptable irradiation strength, increases with the percentage fraction
of the area tested. These confidence levels are discussed in Annexes B and C.
Discussion between the testing house and the user/component manufacturer shall be held to define the
confidence level required and number of shots per site (1-on-1 or S-on-1 testing) and the pulse repetition
frequency at which the tests are taken.
This will define such parameters as the acceptable irradiation spot area, A , the spot site separation, d , and
φ sep
the total number of sites, N , to be irradiated.
TS
© ISO 2006 – All rights reserved 3
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ISO 11254-3:2006(E)
6 Test method
6.1 Principle
This test irradiates sampled test sites on the specimen surface at an agreed or specified irradiation strength,
irradiating in sequence, a fraction of the specimen area and verifying that no damage is observable. Enough
samples (test sites) of the optical surface under test shall be irradiated so that a given confidence level can be
established. See Figure 1.
Since the observation of any damage during a test constitutes failure, this test can be non-destructive for
acceptable parts.
Microscopic examination of the testing site before and after irradiation is used to detect damage.
This procedure is applicable to testing with all laser systems. The polarization state is set with an appropriate
waveplate.
The fluence handling ability of an optical surface under irradiation by short pulsed lasers is usually expressed
in units of energy density (joules per square centimetre).
The power handling ability of an optical surface under irradiation by quasi-continuous wave (cw) or cw-lasers
is usually expressed in units of linear power density (watts per centimetre). Power density refers to the
average power per unit area during the irradiation time. The proper units and physical parameter for scaling
results for quasi-cw and cw-lasers is the linear power density expressed in watts per centimetre.
Key
1 sample in compartment 5 waveplate
2 online damage detector 6 variable attenuator
3 beam diagnostic 7 laser system
4 focusing system
Figure 1 — Basic approach to laser damage testing
6.2 Apparatus
6.2.1 Laser system
A laser system delivering laser radiation with a reproducible near flat-top spatial profile is required. The
temporal profile of the pulses is monitored during the measurement. For the different laser groups, the
maximum permissible variations of the pulse parameters are compiled in Table 2. Stability criteria for the
beam parameters, and therefore the incident energy density of the laser, shall be determined and documented
in an error budget and included with the test report as shown in Annex A.
References for the production of a flat-top beam and laser damage scaling are contained in the Bibliography.
4 © ISO 2006 – All rights reserved
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ISO 11254-3:2006(E)
Table 2 — Maximum variation of laser system parameters and corresponding percentage variation
of the assurance pulse power density
Laser type Pulse energy Average power Pulse duration Assurance area Power density
Q P τ A E
av H φ max
pulsed ± 5 – ± 10 ± 10 ± 15
cw — ± 5 — ± 6 ± 20
NOTE Variations are tabulated in percent.
6.2.2 Variable attenuator and beam delivery system
The laser output shall be attenuated to the required level with an external variable attenuator free of drifts in
transmissivity and imaging properties.
The beam delivery system and the attenuator shall not affect the properties of the laser beam in a manner
inconsistent with the tolerances given in 6.2.1. The polarization state of the laser beam shall not be altered by
the beam delivery system.
6.2.3 Focusing system
The focusing system shall deliver a flat top energy distribution along a section of the beam. The beam shall
have a central peak region where the local fluence or power density for pulsed lasers or linear power density
for cw lasers varies less than the values given in Table 3.
Table 3 — Maximum variations in central peak regions
Maximum variation (peak to valley) over the central peak region expressed
Laser type
as a percentage of the maximum value
pulsed
± 11 %
cw ± 14 %
Coherence effects in specimens with parallel surfaces may affect the measurement. These effects shall be
eliminated by appropriate techniques such as wedging or tilting of the specimen. The application of a highly
converging beam is a method for removing coherence effects in the specimen.
6.2.4 Specimen holder
The test station shall be equipped with a manipulator for a precise placement of the test sites on the specimen
with precision sufficient for the specimen size.
6.2.5 Damage detection
A microscope technique shall be used to inspect the surface before and after the test. The inspection shall be
made with an incident light microscope having Nomarski-type differential interference contrast. A
magnification in the range from 100 × to 150 × shall be used. For routine inspection and objective
measurement of laser damage, an image analyser may be attached to the microscope.
An appropriate online damage detection system may be installed to evaluate the state of the surface under
test. For online detection, any appropriate technique may be used. Techniques suited to this purpose are
online microscopic techniques in conjunction with image analysers, photoacoustic and photothermal detection,
and scatter measurements using a separate laser or radiation from the damaging laser. A typical set-up for an
online scatter measurement system is described in ISO 11254-2.
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ISO 11254-3:2006(E)
6.2.6 Beam diagnostics
6.2.6.1 Total pulse energy and power
The diagnostic package shall be equipped with a calibrated detector to measure the pulse energy or beam
power delivered to the target plane. This instrument shall be traceable to a national standard with an absolute
uncertainty of ± 5 % or better.
6.2.6.2 Temporal profile
The diagnostic package shall include suitable instrumentation for analysing the temporal profile of the laser to
determine the pulse duration.
6.2.6.3 Spatial profile
The spatial profile shall be analysed in the target plane or an equivalent plane. The diagnostic package shall
be equipped with instrumentation to measure the two dimensional spatial profile with a spatial resolution to the
requirements stated in Table 2.
6.3 Preparation of test specimens
Wavelength, angle of incidence and degree of polarization of the laser radiation used in the test shall be in
accordance with the specifications by the manufacturer for normal use. If ranges are given for the values of
these parameters, an arbitrary combination of wavelength, angle of incidence and polarization within these
ranges may be used.
Storage, cleaning and preparation of the specimens shall be according to the specifications provided by the
manufacturer for normal use.
In the absence of manufacturer specified instructions, the following procedure shall be used.
The specimen shall be stored at less than 50 % RH for 24 h prior to testing. The specimen shall be handled by
the non-optical surfaces only. Before testing, a microscopic evaluation of surface quality and cleanliness in
accordance with ISO 10110-7 shall be made using a Nomarski/darkfield microscope at 150 × magnification or
higher.
If contaminants are seen on the specimen, the surface shall be cleaned. The cleaning procedure shall be
documented. If the contaminants are not removable they shall be documented by photographic and/or
electronic means before testing. The test site shall be inspected for dust particles during irradiation. The test
environment shall be clean filtered air of less than 50 % RH and shall be documented.
The testing-sites shall be arranged in a well defined and reproducible arrangement. The test grid shall be
referred to fixed reference points on the specimen.
6.4 Test procedures
6.4.1 General
In tests that sample the ability of an optic to withstand laser irradiation, it is possible to define two types of test.
The first, a Type 1 test, allows the determination of a confidence level that permits no more than a certain
number of defects to exist within a tested area. The Type 1 test is discussed in 6.4.2.
The second, a Type 2 test, is designed, usually empirically, to be used on a specific optic for a specific use.
Such tests are used to provide a cost effective screen in a high rate industrial environment. It should be noted
that such empirically derived tests were the first widely used laser damage tests applied to production systems.
The criteria that shall be specified to define a Type 2 test are given in 6.4.3.
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ISO 11254-3:2006(E)
6.4.2 Type 1 procedure
a) According to the application select the assurance level, φ, the confidence level, γ, and the number of
defects N per sample (usually the responsibility of the user).
d
b) Use Figure 2 to determine the fraction of the area to be tested, A , that shall be exposed, f .
test test
c) Determine (via measurement) A from irradiating beam power density or energy density profile in the
φ
target plane.
d) Determine the number of interrogations, N that shall be made to expose f of the surface under test.
TS test
N = (A × f )/A .
TS test test φ
e) Determine the spacing d between the test sites for hexagonal close packed arrays and for square
sep
arrays
2A
test
d = for hexagonal close packed arrays
sep
N 3
TS
A
test
for square arrays (2)
N
TS
f) Calculate the overlap, Ω
x
H(x,y)⋅−H(x d ,y) dxdy
sep
∫∫
Ω = (3)
x
2
Hd(x,y)xdy
∫∫
In all cases it may not be possible to perform an unconditioned assurance test, i.e. Ω or Ω 1. Also note, if
x y
H(x,y) is significantly non-symmetric it is necessary to calculate Ω .
y
H(x,y)⋅−H(x, y d ) dxdy
sep
∫∫
Ω = (4)
y
2
Hd(x,y)xdy
∫∫
g) Irradiate the optical surface under test step by step for N test sites. Each test site shall be separated in
TS
a hexagonal closed packed array of lattice constant d . For S-on-1 tests, each test site shall be
sep
irradiated to the required number of pulses according to its application. If there is damage at any site the
part is a failure and disposed of as such. If the part under test survives (no damage at any site), then it is
passed for the test parameters as listed.
© ISO 2006 – All rights reserved 7
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ISO 11254-3:2006(E)
NOTE The derivation of the curve above, called the operating characteristic (OC) curve, is based on a defect
dominated damage mechanism. The details of the derivation of the OC curve are given in Annex C.
Key
X percentage of area tested
1 1 defect 5 10 defects
2 2 defects 6 30 defects
3 5 defects 7 50 defects
4 7 defects 8 100 defects
Figure 2 — Operating characteristic curve
6.4.3 Type 2 procedure
In order to specify a Type 2 test the following parameters shall be specified and controlled:
a) assurance level, φ;
b) area of assurance level, A ;
φ
c) number of spots tested;
d) shots exposed per spot;
e) pulse repetition frequency if an S-on-1 test;
f) separation of test sites, d .
sep
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ISO 11254-3:2006(E)
If the specifying contractor does not specify these parameters, then the testing laboratory shall use the
maximum spot area at which they can produce enough irradiation strength for an assurance. The testing
laboratory shall also propose an irradiation pattern without spot overlap and the test rationale (e.g. ten rows of
ten discrete spots over the centre of the area to be tested).
An example of a defined Type 2 test is given in the latter portion of Annex B.
NOTE A Type 2 test has been shown to have a high degree of utility in industrial (large scale) applications.
7 Accuracy
The calibration error budget shall be prepared in order to determine the overall measurement accuracy.
Variations in the total energy or beam power, spatial profile, and temporal profile shall be included in the error
budget. An example is given in Table 4.
Table 4 — Typical error budget for a pulsed laser system
Random variations
± 3 %
Pulse-to-pulse energy stability
Pulse-to-pulse spatial profile stability
± 5 %
Pulse-to-pulse temporal profile stability
± 5 %
Systematic variations
± 3 %
Calorimeter calibration
Calorimeter-energy monitor correlation ± 2 %
Overall energy density measurement reproducibility ± 5,8 %
Overall energy density measurement uncertainty
± 6,8 %
Overall power density measurement reproducibility
± 7,7 %
Overall power density measurement uncertainty
± 8,5 %
8 Test report
The following information shall be included in the test report.
a) General information
1) that the test has been performed according to ISO 11254-3:2006;
2) date of test;
3) name and address of test organizatio
...
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