This document specifies methods for determining the velocity and cross-sectional area of water flowing in open channels and for calculating the discharge employing point velocity measurement devices. It is applicable to methods using rotating-element current meters, acoustic doppler velocimeters (ADVs), acoustic doppler current profiler (ADCP) stationary method, surface velocity measurement including floats and other surface velocity systems. Although some general procedures are discussed, this document does not describe in detail how to use or deploy these systems. NOTEÂ Â Â Â Â Â Â Â For detailed procedures, refer to guidelines from instrument manufacturers and the appropriate public agencies.

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IEC 60704-1:2021 is available as IEC 60704-1:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60704-1:2021 applies to electric appliances (including their accessories or components) for household and similar use, supplied from mains or from batteries. By "similar use" is understood the use in conditions similar to those found in households, for example in inns, coffee houses, tea rooms, hotels, barber or hairdresser shops, launderettes, etc., if not otherwise specified in the IEC 60704-2 series. This document does not apply to: – appliances, equipment, or machines designed exclusively for industrial or professional purposes; – appliances that are integrated parts of a building or its installations, such as equipment for air conditioning, heating and ventilating (except household fans, cooker hoods, free-standing heating appliances, dehumidifiers, air cleaners, and stand-alone water heaters), oil burners for central heating, pumps for water supply and for sewage systems; – separate motors or generators and – appliances exclusively for outdoor use. For determining and verifying noise emission values declared in product specifications, see IEC 60704-3:2019. This fourth edition cancels and replaces the third edition published in 2010. This edition constitutes a technical revision. It includes the following significant changes with respect to the previous edition: a) update of references (especially to ISO standards); b) revision of requirements on climatic conditions; c) revision of requirements on background noise level.

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This document specifies test methods for the determination of the slip resistance of surfaces in the most commonly encountered situations in which pedestrians walk.
NOTE   It is also possible to use this document for measurements where persons might walk on trafficked areas.

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IEC 61557-17:2021 defines minimum performance requirements for non-contact AC voltage indicators to reduce the risk of electric shock for the testing person and bystanders caused by the wrong interpretation of the indication.
Products designed and manufactured in accordance with this document are for use by (electrically) skilled persons only. Non-contact AC voltage indicators are not designed for testing the absence of the operating voltage.
This International Standard is to be used in conjunction with IEC 61557-1:2019.

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This part of EN 13523 specifies the procedure for determining the resistance to cracking of an organic coating on a metallic substrate when bent through 135° to 180°. The degree of adhesion may also be evaluated.
Both folding and mandrel methods are considered. The folding method is more often used for practical purposes but where more precise determinations are required, the mandrel method is recommended.
The cylindrical bend method may also be used for a pass/fail decision by using an agreed mandrel.
The choice of the appropriate test method is limited by the thickness and/or the hardness of the substrate.
The feasibility of the test depends on the type and thickness of the substrate. During the procedure, the mandrel should not deform.

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This document specifies the overall scope of all parts of EN 13523, gives definitions common to all parts and describes how sampling and preparation of test panels for most of the individual test methods are to be carried out.

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This part of EN 13523 specifies procedures for determining the instrumental colour difference (CIELAB) of an organic coating on a metallic substrate.
Establishing a standard as well as the magnitude of an acceptable colour difference are not covered by this method.
Two appropriate methods are given in this part of EN 13523:
a)   instrumental colour difference measurement using a tristimulus colorimeter;
b)   instrumental colour difference measurement using a spectrophotometer or equivalent.
Care shall be taken when measuring e.g.
-   textured surfaces;
-   fluorescent coatings;
-   metameric coatings;
-   multi-coloured, pearlescent, metallic or special colour effect coatings.
In order to determine whether metamerism is present, the metamerism index is determined (see EN 13523-15) and/or a visual examination (see EN 13523-22) is performed with different artificial light sources.

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This document specifies the procedure for determining the gloss of an organic coating on a metallic substrate. Gloss is a characteristic of fundamental importance to the appearance of the coil coated product.
The apparatus requires a flat specimen of size greater than the aperture, thus, uneven surfaces cannot be measured.
This method is applicable to all pigmented and unpigmented coatings including metallic/pearlescent coatings. However, for textured coatings it is only indicative.

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This document specifies the neutron reference radiation fields, in the energy range from thermal up to 20 MeV, for calibrating neutron-measuring devices used for radiation protection purposes and for determining their response as a function of neutron energy. This document is concerned only with the methods of producing and characterizing the neutron reference radiation fields. The procedures for applying these radiation fields for calibrations are described in References [1] and [2]. The neutron reference radiation fields specified are the following: —   neutron fields from radionuclide sources, including neutron fields from sources in a moderator; —   neutron fields produced by nuclear reactions with charged particles from accelerators; —   neutron fields from reactors. In view of the methods of production and use of them, these neutron reference radiation fields are divided, for the purposes of this document, into the following three separate clauses: —   In Clause 4, radionuclide neutron sources with wide spectra are specified for the calibration of neutron-measuring devices. These sources should be used by laboratories engaged in the routine calibration of neutron-measuring devices, the particular design of which has already been type tested. —   In Clause 5, accelerator-produced monoenergetic neutrons and reactor-produced neutrons with wide or quasi monoenergetic spectra are specified for determining the response of neutron‑measuring devices as a function of neutron energy. Since these neutron reference radiation fields are produced at specialized and well-equipped laboratories, only the minimum of experimental detail is given. —   In Clause 6, thermal neutron fields are specified. These fields can be produced by moderated radionuclide sources, accelerators, or reactors.

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IEC 60404-17:2021 is applicable to grain-oriented electrical steel strip and sheet specified in IEC 60404-8-7 for the measurement of magnetostriction characteristics under an applied AC magnetic field at 50 Hz or 60 Hz.
This document defines the general principles and technical details of the measurement of magnetostriction characteristics of grain-oriented electrical steel strip and sheet by means of a single sheet tester and an optical sensor.
This document is applicable to the measurement of:
the butterfly loop;
the peak-to-peak value λp-p;
the zero-to-peak value λ0-p.  The magnetostriction characteristics are determined for a sinusoidal induced secondary voltage, for a specified peak value of the magnetic polarization and at a specified magnetizing frequency.

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This part of IEC 61788 addresses a test method for the determination of the residual resistance ratio (RRR), rRRR, of cavity-grade niobium. This method is intended for high-purity niobium grades with 150 < rRRR < 600. The test method is valid for specimens with rectangular or round cross-section, cross-sectional area greater than 1 mm2 but less than 20 mm2, and a length not less than 10 nor more than 25 times the width or diameter.

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This document specifies the functional requirements and characteristics of the different types of suspended-sediment samplers used for collecting water-sediment mixtures from streams, rivers, lakes and reservoirs. This document does not include equipment for collecting samples in closed conduits and wastewater discharges. NOTEÂ Â Â Â Â Â Â Â Â Â Â The units of measurement used in this document are SI units.

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This part of IEC 62056 describes two sets of profiles: the first set of profiles allows a
bidirectional communication between a client and a server. This set of profiles is made of three
profiles allowing local bus data exchange with stations either energized or not. For nonenergized
stations, the bus supplies energy for data exchange. Three different profiles are
supported:
• base profile: this three-layer profile provides remote communication services;
NOTE 1 This first profile was published in IEC 61142:1993 and became known as the Euridis standard.
• profile with DLMS: this profile allows using DLMS services as specified in IEC 61334-4-41;
NOTE 2 This second profile was published in IEC 62056-31:1999.
• profile with DLMS/COSEM: this profile allows using the DLMS/COSEM Application layer and
the COSEM object model as specified in IEC 62056-5-3 and in IEC 62056-6-2 respectively.
The three profiles use the same physical layer and they are fully compatible, meaning that
devices implementing any of these profiles can be operated on the same bus. The transmission
medium is twisted pair using carrier signalling and it is known as the Euridis Bus.
The second set of profiles allows unidirectional communication between a given Energy
Metering device and a Customer Energy Management System. This second set is made up of
three profiles.
Subclause 4.2.1 to Clause 8 included specify the bidirectional communication using twisted pair
signalling and Clause 9 to 9.5 the unidirectional communication using twisted pair signalling.

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This document specifies testing procedures for the instrumental determination of brightness and
colour of tissue paper and tissue products viewed under outdoor daylight conditions. It also gives
specific instructions for the preparation of test pieces (single-ply, multi-ply products) and for the optical
measurements of products, where special precautions can be necessary.
NOTE The properties called ISO brightness and colour with C/2° (indoor daylight) are measured with an
instrument adjusted to a much lower UV content than that specified in this document. The measurements of ISO
brightness and colour with C/2° (indoor daylight) are described in ISO 12625-15.

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This part of ISO 10360 specifies the acceptance tests for verifying the performance of an optical CMS
(coordinate measuring system) when measuring lengths as stated by the manufacturer. It also
specifies the reverification tests that enable the user to periodically reverify the performance of the
optical 3D CMS. An optical 3D CMS that this standard intends to specify is a contactless area
measuring sensor delivering 3D surface data in several individual single views by an optical measuring
principle and transforming it into a common coordinate system. Typical optical measuring principles are
pattern projection, fringe projection, and project-and-sweep a scanned line, or similar, delivering single
views without assistance of external information related to position and orientation between CMS and
objects to be scanned. Typical registration principle is based on a best fitting of commonly captured
position information across at least two different single views either or both by using reference targets
or surface features of objects to be scanned.

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This part of IEC 62053 applies only to static var-hour meters of accuracy classes 0,5S, 1S, 1, 2 and 3 for the measurement of alternating current electrical reactive energy in 50 Hz or 60 Hz networks and it applies to their type tests only.

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This document specifies the measurement method and conditions to obtain reproducible noise levels
on-board all kinds of vehicles operating on rails or other types of fixed track, hereinafter conventionally
called “unit”, except for track maintenance vehicles in working modes.
This document is applicable to type testing. It does not include all the instructions to carry out
monitoring testing or evaluation of noise exposure of passengers or drivers over a whole journey.
This document is not applicable to guided buses.
It provides measurement procedures for vehicle interior noise (in general, a vehicle type test is carried
out using only a selected subset of these tests):
— when the vehicle is moving at constant speed;
— when the vehicle is stationary;
— when the vehicle is accelerating or decelerating;
— in the driver's cab when an external warning horn is sounding (specifically required for European
Union regulation application)
It does not provide measurement procedures for:
— audibility or intelligibility of any audible signals;
— assessment of warning devices other than warning horns.
The assessment of noise exposure of train crew due to operational conditions is not in the scope of this
document.
The results can be used, for example:
— to characterise the noise inside these units;
— to compare the internal noise of various units on a particular track section;
— to collect basic source data for units.
The test procedures specified in this document are of engineering grade (grade 2), the preferred grade
for noise declaration purposes as defined in ISO 12001. If test conditions are relaxed, for example as
they are for monitoring of in-service trains, then the results are no longer of engineering grade.
The procedures specified for accelerating and decelerating tests are of survey grade (grade 3).

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This part of IEC 62053 applies only to transformer operated static watt-hour meters of accuracy classes 0,1S, 0,2S and 0,5S for the measurement of alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests only.

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This part of IEC 62053 applies only to static watt-hour meters of accuracy classes 0,5, 1 and 2 for the measurement of alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests only.

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This part of IEC 62053 applies only to static var-hour meters of accuracy classes 2 and 3 for the measurement of alternating current electrical reactive energy in 50 Hz or 60 Hz networks and it applies to their type tests only.

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This part of IEC 61757 specifies the terminology, characteristic performance parameters and
related test methods of optical temperature sensors based on fibre Bragg gratings (FBG) that
carry out temperature measurements in the temperature range between –260 °C and 600 °C.
Generic specifications for fibre optic sensors are defined in IEC 61757.

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This document specifies the acceptance tests for verifying the performance of a laser tracker by
measuring calibrated test lengths, according to the specifications of the manufacturer. It also specifies
the reverification tests that enable the user to periodically reverify the performance of the laser tracker.
The acceptance and reverification tests given in this document are applicable to laser trackers utilizing
a retroreflector, or a retroreflector in combination with a stylus or optical distance sensor, as a probing
system. Laser trackers that use interferometric measurement (IFM), absolute distance measurement
(ADM) or both can be verified using this document. This document can also be used to specify and
verify the relevant performance tests of other spherical coordinate measurement systems that use
cooperative targets, such as “laser radar” systems.
NOTE Systems which do not track the target, such as laser radar systems, will not be tested for probing
performance.
This document does not explicitly apply to measuring systems that do not use a spherical coordinate
system. However, interested parties can apply this document to such systems by mutual agreement.
This document specifies:
— performance requirements that can be assigned by the manufacturer or the user of the laser tracker;
— the manner of execution of the acceptance and reverification tests to demonstrate the stated
requirements;
— rules for proving comformity;
— applications for which the acceptance and reverification tests can be used.

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This document specifies the typical requirements of instrumentation for measuring liquid precipitation, primarily for the purpose of hydrological and meteorological observation. This document is applicable to both non-recording and recording catching-type precipitation gauges for the measurement of liquid precipitation. This document covers design criteria for the gauges and elements to be considered in their construction. This document does not include specification, design and installation conditions. NOTE      Since the measurement of solid precipitation is outside the scope, the disadvantages of solid precipitation apply to all gauges listed in Annex A. The measurement of solid precipitation and associated disadvantages are well documented in Reference [1].

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IEC 60688:2021 is available as IEC 60688:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60688:2021 applies to transducers with electrical inputs and outputs for making measurements of AC or DC electrical quantities. The output signal can be in the form of an analogue direct current, an analog direct voltage or in digital form.
This document applies to measuring transducers used for converting electrical quantities such as
– current,
– voltage,
– active power,
– reactive power,
– power factor,
– phase angle,
– frequency,
– harmonics or total harmonic distortion, and
– apparent power
to an output signal.
This document is not applicable for
– instrument transformers that complies with IEC 61869 (all parts),
– transmitters for use in industrial process application that complies with IEC 60770 (all parts), and
– performance measuring and monitoring devices (PMD) that comply with IEC 61557 12:2018.
Within the measuring range, the output signal is a function of the measurand. An auxiliary supply can be needed.
This document applies
a) if the nominal frequency of the input(s) lies between 0 Hz and 1 500 Hz,
b) to the electrical measuring transducer if it is part of a system for the measurement of a non-electrical quantity, and if it otherwise falls within the scope of this document, and
c) to transducers for use in a variety of applications such as telemetry and process control and in one of a number of defined environments.
This document is intended:
– to specify the terminology and definitions relating to transducers whose main application is in industry,
– to unify the test methods used in evaluating transducer performance, and
– to specify accuracy limits and output values for transducers.
IEC 60688:2021 cancels and replaces the third edition published in 2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) updating normative references;
b) additional requirements for specific transducers used for LV monitoring applications;
c) creation of interface coding to ease selection by the end-user.

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This document specifies the requirements for qualification and assessment of personnel who perform machinery condition monitoring and diagnostics using acoustic emission. A certificate or declaration of conformity to this document will provide recognition of the qualifications and competence of individuals to perform acoustic emission measurements and analysis for machinery condition monitoring using acoustic emission equipment. This procedure may not apply to specialized equipment or other specific situations. This document specifies a three-category classification programme that is based on the technical areas delineated herein.

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This document specifies procedures for the following:
a) primary particle-sizing calibration for particle sizes 1 µm(c) and larger, sensor resolution and counting performance of liquid automatic particle counters that are capable of analysing bottle samples;
b) secondary particle-sizing calibration using suspensions verified with a primary calibrated APC;
c) establishing acceptable operation and performance limits;
d) verifying particle sensor performance using a test dust;
e) determining coincidence and flow rate limits.
This document is applicable for use with hydraulic fluids, aviation and diesel fuels, engine oil and other petroleum-based fluids. This document is not applicable to particle-sizing calibration using NIST SRM 2806b primary calibration suspensions.

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This document provides guidance and requirements for test providers and interested parties to implement vibration testing. This document specifies methods, including the force limiting approach, to mitigate unnecessary over-testing of spacecraft, subsystems and units for space application. The technical requirements in this document can be tailored to meet the actual test objectives.

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This document specifies the acceptance tests for verifying the performance of an optical 3D coordinate measuring system (CMS) when measuring lengths as stated by the manufacturer. It also specifies the reverification tests that enable the user to periodically reverify the performance of the optical 3D CMS. This document is applicable to verification of the measuring performance of CMSs if the surface characteristics (e.g. glossiness, colour) of the object to be scanned are restricted and within a cooperative range. This document does not apply to other types of CMSs, including those covered by the other parts of the ISO 10360 series.

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This part of IEC 60404 is applicable to electrical steel strip and sheet insulated by coating on one or both surfaces.
The object of this document is to define the general principles and technical details of the measurement of the surface insulation resistance of electrical steel strip and sheet.
NOTE This test is suitable for manufacturing and quality control in the application of insulation coatings.

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This document specifies the measurement method and conditions to obtain reproducible noise levels on-board all kinds of vehicles operating on rails or other types of fixed track, hereinafter conventionally called “unit”, except for track maintenance vehicles in working modes. This document is applicable to type testing. It does not include all the instructions to carry out monitoring testing or evaluation of noise exposure of passengers or drivers over a whole journey. This document is not applicable to guided buses. It provides measurement procedures for vehicle interior noise (in general, a vehicle type test is carried out using only a selected subset of these tests): —   when the vehicle is moving at constant speed; —   when the vehicle is stationary; —   when the vehicle is accelerating or decelerating; —   in the driver's cab when an external warning horn is sounding (specifically required for European Union regulation application) It does not provide measurement procedures for: —   audibility or intelligibility of any audible signals; —   assessment of warning devices other than warning horns. The assessment of noise exposure of train crew due to operational conditions is not in the scope of this document. The results can be used, for example: —   to characterise the noise inside these units; —   to compare the internal noise of various units on a particular track section; —   to collect basic source data for units. The test procedures specified in this document are of engineering grade (grade 2), the preferred grade for noise declaration purposes as defined in ISO 12001. If test conditions are relaxed, for example as they are for monitoring of in-service trains, then the results are no longer of engineering grade. The procedures specified for accelerating and decelerating tests are of survey grade (grade 3).

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This document specifies conditions for the determination of 90Sr and 89Sr activity concentration in
samples of environmental water using liquid scintillation counting (LSC) or proportional counting (PC).
The method is applicable to test samples of drinking water, rainwater, surface and ground water,
marine water, as well as cooling water, industrial water, domestic, and industrial wastewater after
proper sampling and handling, and test sample preparation. Filtration of the test sample and a chemical
separation are required to separate and purify strontium from a test portion of the sample.
The detection limit depends on the sample volume, the instrument used, the sample count time, the
background count rate, the detection efficiency and the chemical yield. The method described in this
document, using currently available LSC counters, has a detection limit of approximately 10 mBq l−1
and 2 mBq l−1 for 89Sr and 90Sr, respectively, which is lower than the WHO criteria for safe consumption
of drinking water (100 Bq·l−1 for 89Sr and 10 Bq·l−1 for 90Sr)[3]. These values can be achieved with a
counting time of 1 000 min for a sample volume of 2 l.
The methods described in this document are applicable in the event of an emergency situation.
When fallout occurs following a nuclear accident, the contribution of 89Sr to the total amount of
radioactive strontium is not negligible. This document provides test methods to determine the activity
concentration of 90Sr in presence of 89Sr.
The analysis of 90Sr and 89Sr adsorbed to suspended matter is not covered by this method.
It is the user’s responsibility to ensure the validity of this test method selected for the water samples
tested.

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This document specifies a calibration method for mechanical type, electromagnetic type and acoustic type hydrometric current-meters used for point velocity measurement of flowing water. The method requires towing the instrument through still water in a straight open tank. It includes measuring apparatus, the calibration procedure, the method of presenting the results and the uncertainties associated with the method.

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This part of IEC 60051 applies to direct acting indicating wattmeters and varmeters having an
analogue display.
NOTE For multi-function instruments, see IEC 60051-7.
It also applies to:
• non-interchangeable accessories (as defined in 3.1.23 of IEC 60051-1:2016) used with
wattmeters and varmeters;
• a combination of the instruments and the accessories provided that the adjustments have
been made for the combination;
• direct acting indicating electrical measuring instruments whose scale marks do not
correspond directly to their electrical input quantity, provided that the relationship between
them is known;
• instruments and accessories having electronic devices in their measuring and/or auxiliary
circuits.
This document does not apply to:
– special purpose instruments which are covered by their own IEC standards;
– special purpose devices which are covered by their own IEC standards when they are
used as accessories.

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IEC TS 61340-5-4:2021(E) describes compliance verification testing for technical items that are included in ESD control programs, such as those specified in IEC 61340-5-1.
Test methods are based on those specified in IEC 61340-5-1 and other parts of the IEC 61340 series, and are simplified where necessary for the purposes of compliance verification, to be performed by competent personnel.
Users can, by reference to this document in their compliance verification plan, adopt the necessary test methods described herein without change or addition. Alternatively, test methods described in this document can be adapted to match the requirements of their own ESD control program, provided deviations in equipment or procedure are documented in their compliance verification plan.
Compliance verification test frequency is not specified in this document. Guidance on how users can consider compliance verification test frequency is given in informative Annex A.
Product qualification is excluded from the scope of this document.
This first edition cancels and replaces IEC TR 61340-5-4 published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC TR 61340­5-4:  
test methods in the main body of the document have been made normative, and consequently normative references have been added;
the term "ESD ground" has been added and defined;
description of equipment for measuring low resistance has been added;
user specified electrodes, including surface resistance bar electrodes, are permitted to be used for resistance measurements;
an informative annex on verification of compliance verification test equipment has been added;
compliance verification of person-footwear-flooring systems by measuring body voltage has been moved to an informative annex.

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This document specifies the acceptance tests for verifying the performance of a laser tracker by measuring calibrated test lengths, according to the specifications of the manufacturer. It also specifies the reverification tests that enable the user to periodically reverify the performance of the laser tracker. The acceptance and reverification tests given in this document are applicable to laser trackers utilizing a retroreflector, or a retroreflector in combination with a stylus or optical distance sensor, as a probing system. Laser trackers that use interferometric measurement (IFM), absolute distance measurement (ADM) or both can be verified using this document. This document can also be used to specify and verify the relevant performance tests of other spherical coordinate measurement systems that use cooperative targets, such as “laser radar” systems. NOTE      Systems which do not track the target, such as laser radar systems, will not be tested for probing performance. This document does not explicitly apply to measuring systems that do not use a spherical coordinate system. However, interested parties can apply this document to such systems by mutual agreement. This document specifies: —   performance requirements that can be assigned by the manufacturer or the user of the laser tracker; —   the manner of execution of the acceptance and reverification tests to demonstrate the stated requirements; —   rules for proving comformity; —   applications for which the acceptance and reverification tests can be used.

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Clause 1 of IEC 61869-1:2007 is replaced by the following:
This part of IEC 61869 is a product standard and covers only additional requirements for standalone
merging units (SAMUs) used for AC applications having rated frequencies from 15 Hz to
100 Hz. The digital output format specification is not covered by this document; it is
standardized in IEC 61869-9 as an application of IEC 61850, which specifies the power utility
communication architecture.
This document covers SAMUs having standardized analogue inputs (for example: 1 A, 5 A,
3,25 V / √3 or 100 V / √3) provided by instrument transformers compliant with relevant product
standards (e.g. IEC 61869-2 to IEC 61869-5, IEC 61869-7, IEC 61869-8, IEC 61869-10,
IEC 61869-11, IEC 60044-1 to IEC 60044-6, IEC 60185, IEC 60186, IEEE C57.13), and aims
to convert them to the digital output compliant with IEC 61869-9. Other input and output types
are outside the scope of this document. Appropriate SAMU functionality can be combined with
switchgear controller functionality defined in IEC 62271-3 or other IED functionality defined in
IEC 60255 (all parts).
Cyber security requirements are outside the scope of this document and are covered by the
IEC 62351 series.

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IEC 61788-23:2021 is available as IEC 61788-23:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61788-23:2021 addresses a test method for the determination of the residual resistance ratio (RRR), rRRR, of cavity-grade niobium. This method is intended for high-purity niobium grades with 150 < rRRR < 600. The test method is valid for specimens with rectangular or round cross-section, cross-sectional area greater than 1 mm2 but less than 20 mm2, and a length not less than 10 nor more than 25 times the width or diameter.

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This document specifies the general requirements to carry out radionuclides tests, including sampling of soil including rock from bedrock and ore as well as of construction materials and products, pottery, etc. using NORM or those from technological processes involving Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM) e.g. the mining and processing of mineral sands or phosphate fertilizer production and use.
For simplification, the term “soil” used in this document covers the set of elements mentioned above.
This document is addressed to people responsible for determining the radioactivity present in soils for the purpose of radiation protection. This concerns soils from gardens and farmland, urban or industrial sites, as well as soil not affected by human activities.
This document is applicable to all laboratories regardless of the number of personnel or the extent of the scope of testing activities. When a laboratory does not undertake one or more of the activities covered by this document, such as planning, sampling or testing, the requirements of those clauses do not apply.
This document is to be used in conjunction with other parts of ISO 18589 that outline the setting up of programmes and sampling techniques, methods of general processing of samples in the laboratory and also methods for measuring the radioactivity in soil. Its purpose is the following:
—   define the main terms relating to soils, sampling, radioactivity and its measurement;
—   describe the origins of the radioactivity in soils;
—   define the main objectives of the study of radioactivity in soil samples;
—   present the principles of studies of soil radioactivity;
—   identify the analytical and procedural requirements when measuring radioactivity in soil.
This document is applicable if radionuclide measurements for the purpose of radiation protection are to be made in the following cases:
—   initial characterization of radioactivity in the environment;
—   routine surveillance of the impact of nuclear installations or of the evolution of the general territory;
—   investigations of accident and incident situations;
—   planning and surveillance of remedial action;
—   decommissioning of installations or clearance of materials.

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This document describes the principles for the measurement of the activity of 90Sr in equilibrium with 90Y and 89Sr, pure beta emitting radionuclides, in soil samples. Different chemical separation methods are presented to produce strontium and yttrium sources, the activity of which is determined using proportional counters (PC) or liquid scintillation counters (LSC). 90Sr can be obtained from the test samples when the equilibrium between 90Sr and 90Y is reached or through direct 90Y measurement. The selection of the measuring method depends on the origin of the contamination, the characteristics of the soil to be analysed, the required accuracy of measurement and the resources of the available laboratories.
These methods are used for soil monitoring following discharges, whether past or present, accidental or routine, liquid or gaseous. It also covers the monitoring of contamination caused by global nuclear fallout.
In case of recent fallout immediately following a nuclear accident, the contribution of 89Sr to the total amount of strontium activity will not be negligible. This standard provides the measurement method to determine the activity of 90Sr in presence of 89Sr.
The test methods described in this document can also be used to measure the radionuclides in sludge, sediment, construction material and products by following proper sampling procedure.
Using samples sizes of 20 g and counting times of 1 000 min, detection limits of (0,1 to 0,5) Bq·kg-1 can be achievable for 90Sr using conventional and commercially available proportional counter or liquid scintillation counter when the presence of 89Sr can be neglected. If 89Sr is present in the test sample, detection limits of (1 to 2) Bq·kg-1 can be obtained for both 90Sr and 89Sr using the same sample size, counting time and proportional counter or liquid scintillation counter as in the previous situation.

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This document applies to hearing aid fitting management (HAFM) services offered by hearing aid professionals (HAP) when providing benefit for their clients. The provision of hearing aids relies on the knowledge and practices of a hearing aid professional, to ensure the proper fitting and adequate service in the interest of the client with hearing loss.
This document specifies general processes of HAFM from the client profile to the follow-up through administering, organising and controlling hearing aid fitting through all stages. It also specifies important preconditions such as education, facilities and systems that are required to ensure proper services.
The focus of this document is the services offered to the majority of adult clients with hearing impairment. It is recognized that certain populations with hearing loss such as children, persons with other disabilities or persons with implantable devices can require services outside the scope of this document. This document generally applies to air conduction hearing aids and for the most part also to bone conduction devices.
Hearing loss can be a consequence of serious medical conditions. Hearing aid professionals are not in a position to diagnose or treat such conditions. When assisting clients seeking hearing rehabilitation without prior medical examination, hearing aid professionals are expected to be observant of symptoms of such conditions and refer to proper medical care.
Further to the main body of the document, which specifies the HAFM requirements and processes, several informative annexes are provided. Appropriate education of hearing aid professionals is vital for exercising HAFM. Annex A defines the competencies required for the HAFM processes. Annex B offers a recommended curriculum for the education of hearing aid professionals. Annex C is an example of an appropriate fitting room. Annex D gives guidance on the referral of clients for medical or other specialist examination and treatment. Annex E is a recommendation for important information to be exchanged with the client during the process of HAFM. Annex F is a comprehensive terminology list offering definitions of the most current terms related to HAFM.
It is the intention that these annexes be helpful to those who wish to deliver HAFM of the highest quality.

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This document describes a method for measuring 238Pu and 239 + 240 isotopes in soil by alpha spectrometry samples using chemical separation techniques.
The method can be used for any type of environmental study or monitoring. These techniques can also be used for measurements of very low levels of activity, one or two orders of magnitude less than the level of natural alpha-emitting radionuclides.
The test methods described in this document can also be used to measure the radionuclides in sludge, sediment, construction material and products following proper sampling procedure[2][3][4][5][7][8].
The mass of the test portion required depends on the assumed activity of the sample and the desired detection limit. In practice, it can range from 0,1 g to 100 g of the test sample.

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This document provides a method that allows an estimation of gross radioactivity of alpha- and beta-emitters present in soil samples. It applies, essentially, to systematic inspections based on comparative measurements or to preliminary site studies to guide the testing staff both in the choice of soil samples for measurement as a priority and in the specific analysis methods for implementation.
The gross α or β radioactivity is generally different from the sum of the effective radioactivities of the radionuclides present since, by convention, the same alpha counting efficiency is assigned for all the alpha emissions and the same beta counting efficiency is assigned for all the beta emissions.
Soil includes rock from bedrock and ore as well as construction materials and products, potery, etc. using naturally occurring radioactive materials (NORM) or those from technological processes involving Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM), e.g. the mining and processing of mineral sands or phosphate fertilizer production and use.
The test methods described in this document can also be used to assess gross radioactivity of alpha- and beta-emitters in sludge, sediment, construction material and products following proper sampling procedure[2][3][4][5][7][8].
For simplification, the term “soil” used in this document covers the set of elements mentioned above.

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This document specifies field survey methods for measuring
a) airborne sound insulation between rooms,
b) impact sound insulation of floors,
c) airborne sound insulation of façades, and
d) sound pressure levels in rooms caused by service equipment.
The methods described in this document are applicable for measurements in rooms of dwellings or in
rooms of comparable size with a maximum of 150 m3.
For airborne sound insulation, impact sound insulation and façade sound insulation the method gives
values which are (octave band) frequency dependent. They can be converted into a single number
characterising the acoustical performances by application of ISO 717-1 and ISO 717-2. For heavy/soft
impact sound insulation, the results also are given as A-weighted maximum impact sound pressure
level. For service equipment sound the results are given directly in A - or C -weighted sound pressure
levels.

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This document specifies a method for the physical pre-treatment and conditioning of water samples
and the determination of the activity concentration of various radionuclides emitting gamma-rays with
energies between 40 keV and 2 MeV, by gamma‑ray spectrometry according to the generic test method
described in ISO 20042.
The method is applicable to test samples of drinking water, rainwater, surface and ground water as well
as cooling water, industrial water, domestic and industrial wastewater after proper sampling, sample
handling, and test sample preparation (filtration when necessary and taking into account the amount
of dissolved material in the water). This method is only applicable to homogeneous samples or samples
which are homogeneous via timely filtration.
The lowest limit that can be measured without concentration of the sample or by using only passive
shield of the detection system is about 5·10-2 Bq/l for e.g. 137Cs1). The upper limit of the activity
corresponds to a dead time of 10 %. Higher dead times may be used but evidence of the accuracy of the
dead-time correction is required.
Depending on different factors, such as the energy of the gamma-rays, the emission probability per
nuclear disintegration, the size and geometry of the sample and the detector, the shielding, the counting
time and other experimental parameters, the sample may require to be concentrated by evaporation
if activities below 5·10-2 Bq/l need to be measured. However, volatile radionuclides (e.g. radon and
radioiodine) can be lost during the source preparation.
This method is suitable for application in emergency situations.

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This document specifies a formalism for the calculation of the illuminant metamerism of solid surface colours. It cannot be applied to colours of effect coatings without metrical adaptation.
This document only covers the phenomenon of metamerism for change of illuminant, which has the greatest meaning in practical application. In the case of chromaticity coordinates of a pair of samples under reference conditions that do not exactly match, recommendations are given on which correction measures are to be taken. Regarding the reproduction of colours, the metamerism index is used as a measure of quality in order to specify tolerances for colour differences between a colour sample and a colour match under different illumination conditions.
The quantification of the illuminant metamerism of pairs of samples is formally performed by a colour difference assessment, for which tolerances that are common for the evaluation of residual colour differences can be used.

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This part of IEC 60051 applies to direct acting indicating analogue frequency meters of the
following types:
• pointer-type frequency meters (as defined in 3.2.11 of IEC 60051-1:2016);
• vibrating-reed frequency meters (as defined in 3.2.12 of IEC 60051-1:2016).
This document also applies to non-interchangeable accessories (as defined in 3.1.23 of
IEC 60051-1:2016) used with frequency meters.

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