Metrologi och mätning. Fysikaliska fenomen

Kommittébeteckning: SIS/TK 110 (Akustik och buller)
Källa: CEN
Svarsdatum: den 4 aug 2019
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ISO 11202:2010 specifies a method for determining the emission sound pressure levels of machinery or equipment, at a work station and at other specified positions nearby, in situ. A work station is occupied by an operator and may be located in open space, in the room where the source under test operates, in a cab fixed to the source under test, or in an enclosure remote from the source under test. One or more specified positions may be located in the vicinity of a work station, or in the vicinity of an attended or unattended machine. Such positions are sometimes referred to as bystander positions. Emission sound pressure levels are determined as A-weighted levels. Additionally, levels in frequency bands and C-weighted peak emission sound pressure levels can be determined in accordance with ISO 11202:2010, if required. Methods are given for determining a local environmental correction (subject to a specified limiting maximum value) to be applied to the measured sound pressure levels in order to eliminate the influence of reflecting surfaces other than the plane on which the source under test is placed. This correction is based on the equivalent sound absorption area of the test room and on radiation characteristics (source location or directivity at the work station). With the method specified in ISO 11202:2010, results of accuracy grade 2 (engineering grade) or accuracy grade 3 (survey grade) are obtained. Corrections are applied for background noise and, as described above, for the acoustic environment. Instructions are given for the mounting and operation of the source under test and for the choice of microphone positions for the work station and for other specified positions. One purpose of the measurements is to permit comparison of the performance of different units of a given family of machines, under defined environmental conditions and standardized mounting and operating conditions. The method specified in ISO 11202:2010 is suitable for all types of noise (steady, non-steady, fluctuating, isolated bursts of sound energy, etc.) defined in ISO 12001. The method specified in ISO 11202:2010 is applicable to all types and sizes of noise sources. The type of test environment influences the accuracy of the determination of emission sound pressure levels. For ISO 11202:2010, any room meeting prescribed requirements is applicable. These requirements on the room are less strict compared to those of ISO 11201[15], in particular regarding the acoustical quality of the environment. ISO 11202:2010 is applicable to work stations and other specified positions where emission sound pressure levels are to be measured. Appropriate positions where measurements may be made include the following: a) work station located in the vicinity of the source under test; this is the case for many industrial machines and domestic appliances; b) work station within a cab which is an integral part of the source under test; this is the case for many industrial trucks and earth-moving machines; c) work station within a partial or total enclosure (or behind a screen) supplied by the manufacturer as an integral part of the source under test; d) work station partially or totally enclosed by the source under test; this situation may be encountered with some large industrial machines; e) bystander positions occupied by individuals not responsible for the operation of the source under test, but who may be in its immediate vicinity, either occasionally or continuou

Kommittébeteckning: SIS/TK 110 (Akustik och buller)
Källa: CEN
Svarsdatum: den 6 aug 2019
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This document establishes general rules for the acoustic testing of air-terminal units, dampers and valves used in air diffusion and air distribution systems in order to determine sound power levels as defined in ISO 3741.

Kommittébeteckning: SIS/TK 507 (Tekniska produktspecifikationer (TPS))
Källa: CEN
Svarsdatum: den 9 aug 2019
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This document gives the rules of definition and interpretation of general specifications defined according to ISO 8015 (general tolerancing) applicable on the whole workpiece.

The general specifications can be applied to integral surfaces only, i.e. integral lines are excluded.

The general geometrical and dimensional specifications defined in this document applies to the following:

— for dimensional specifications:

  — for features of size:

    — linear size (±) (according to ISO 14405-1);

    — angular size (±)(according to ISO 14405-3);

— for geometrical specifications:

  — for integral features:

    — geometrical specifications with the characteristic surface profile (⌓).

Ämnesområden: Mätinstrument
Kommittébeteckning: SIS/TK 507 (Tekniska produktspecifikationer (TPS))
Källa: CEN
Svarsdatum: den 9 aug 2019
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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 only to laser trackers utilizing a retro-reflector as a probing system. Laser trackers that use interferometry (IFM), absolute distance meter (ADM) measurement, or both can be verified using this document. This standard 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, such as laser radar systems, which do not track the target, will not be tested for probing performance.

This document does not explicitly apply to measuring systems that do not use a spherical coordinate system (i.e. two orthogonal rotary axes having a common intersection point with a third linear axis in the radial direction) however, the parties may apply this part of 10360 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 conformance, and

— applications for which the acceptance and reverification tests can be used.

Ämnesområden: Mätinstrument
Kommittébeteckning: SIS/TK 507 (Tekniska produktspecifikationer (TPS))
Källa: CEN
Svarsdatum: den 9 aug 2019
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This document provides the most important design and metrological characteristics of calliper depth gauges

— with analogue indication: vernier scale or circular scale (dial), and

— with digital indication: digital display.

Kommittébeteckning: SIS/TK 507 (Tekniska produktspecifikationer (TPS))
Källa: CEN
Svarsdatum: den 9 aug 2019
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This document defines the maximum material requirement, the least material requirement and the reciprocity requirement. These requirements can only be applied to linear features of size of cylindrical type or opposed planar type.

These requirements are often used to control specific functions of workpieces where size and geometry are interdependent, e.g. to fulfil the functions "assembly of parts" (for maximum material requirement) or "minimum wall thickness" (for least material requirement). However, the maximum material requirement and least material requirement can also be used to fulfil other functional design requirements.

Kommittébeteckning: SIS/TK 405 (Kärnenergi)
Källa: ISO
Svarsdatum: den 12 aug 2019
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This document specifies a procedure, in the field of ionizing radiation metrology, for the calculation of

the “decision threshold”, the “detection limit” and the “limits of the coverage interval” for a nonnegative

ionizing radiation measurand when counting measurements with preselection of time or

counts are carried out. The measurand results from a gross count rate and a background count rate as

well as from further quantities on the basis of a model of the evaluation. In particular, the measurand

can be the net count rate as the difference of the gross count rate and the background count rate, or the

net activity of a sample. It can also be influenced by calibration of the measuring system, by sample

treatment and by other factors.

ISO 11929 has been divided into four parts covering elementary applications in Part 1, advanced

applications on the basis of the ISO/IEC Guide 98-3-1 in Part 2, applications to unfolding methods in

Part 3, and guidance to the application in Part 4.

ISO 11929-1 covers basic applications of counting measurements frequently used in the field of ionizing

radiation metrology. It is restricted to applications for which the uncertainties can be evaluated on the

basis of the ISO/IEC Guide 98-3 (JCGM 2008). In Annex B of ISO 11929-1, the special case of repeated

counting measurements with random influences and in Annex C of ISO 11929-1, measurements with

linear analogous ratemeters are covered.

ISO 11929-2 extends ISO 11929-1 to the evaluation of measurement uncertainties according to the

ISO/IEC Guide 98-3-1. ISO 11929-2 also presents some explanatory notes regarding general aspects of

counting measurements and Bayesian statistics in measurements.

ISO 11929-3 deals with the evaluation of measurements using unfolding methods and counting

spectrometric multi-channel measurements if evaluated by unfolding methods, in particular, alpha- and

gamma-spectrometric measurements. Further, it provides some advice how to deal with correlations

and covariances.

ISO 11929-4 gives guidance to the application of ISO 11929, summarizing shortly the general procedure

and then presenting a wide range of numerical examples. The examples cover elementary applications

according to ISO 11929-1 and ISO 11929-2.

ISO 11929 also applies analogously to other measurements of any kind if a similar model of the

evaluation is involved. Further practical examples can be found in other International Standards, for

example [1-21].

Kommittébeteckning: SIS/TK 111 (Vibration och stöt)
Källa: ISO
Svarsdatum: den 22 aug 2019
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This document describes important technical properties of the different methods for mounting of vibration transducers and describes recommended practices. Furthermore it shows examples concerning influences of the mounting of the accelerometer on the frequency response and other influences that could affect the fidelity of the representation of the actual motion of the structure being observed.

This document applies to the contacting type of accelerometers which are currently in wide use. It is applicable to both uniaxial and multi-axial transducers. This document also applies to velocity transducers.

With this document the user is enabled to estimate the limits of a mounting and consequently potential measurement deviations.

It should be noted that transducer mounting issues are not the only problem that can affect the validity of acceleration measurement. This includes, among others: transverse movements, alignment of the transducer, base bending, cable movement, temperature changes, electric and magnetic fields, cable whip, mounting torque, etc. However, issues other than mounting, and their possible effects are not dealt with in detail in this document.

Kommittébeteckning: SIS/TK 424 (Kemiska vattenundersökningar)
Källa: CEN
Svarsdatum: den 25 aug 2019
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This part of ISO 13164 describes a test method for the determination of radon-222 (222Rn) activity

concentration in non-saline waters by extraction and liquid scintillation counting.

The radon-222 activity concentrations, which can be measured by this test method utilizing currently

available instruments, are at least above 0,5 Bq l−1 for a 10 ml test sample and a measuring time of 1 h.

This test method can be used successfully with drinking water samples and it is the responsibility of the

laboratory to ensure the validity of this test method for water samples of untested matrices.

Annex A gives indication on the necessary counting conditions to meet the required detection limits for

drinking water monitoring.

Kommittébeteckning: SIS/TK 424 (Kemiska vattenundersökningar)
Källa: CEN
Svarsdatum: den 25 aug 2019
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This part of ISO 13165 specifies the determination of radium-226 (226Ra) activity concentration in nonsaline

water samples by extraction of its daughter radon-222 (222Rn) and its measurement using liquid

scintillation counting.

Radium-226 activity concentrations which can be measured by this test method utilizing currently

available liquid scintillation counters goes down to 50 mBq l−1. This method is not applicable to the

measurement of other radium isotopes.

Kommittébeteckning: SIS/TK 424 (Kemiska vattenundersökningar)
Källa: CEN
Svarsdatum: den 25 aug 2019
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This part of ISO 13165 specifies the determination of radium-226 (226Ra) activity concentration in all

types of water by emanometry.

The method specified is suitable for the determination of the soluble, suspended, and total 226Ra activity

concentration in all types of water with soluble 226Ra activity concentrations greater than 0,02 Bq l−1.

In water containing high activity concentrations of 228Th, interference from 220Rn decay products can

lead to overestimation of measured levels (see Figure A.2).

Kommittébeteckning: SIS/TK 424 (Kemiska vattenundersökningar)
Källa: CEN
Svarsdatum: den 25 aug 2019
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This part of ISO 13165 specifies the determination of radium-226 (226Ra) activity concentration in all types of water by coprecipitation followed by gamma-spectrometry (see ISO 18589‑3).

The method described is suitable for determination of soluble 226Ra activity concentrations greater than 0,02 Bq l−1 using a sample volume of 1 l to 100 l of any water type.

For water samples smaller than a volume of 1 l, direct gamma-spectrometry can be performed following ISO 10703 with a higher detection limit.

NOTE This test method also allows other isotopes of radium, 223Ra, 224Ra, and 228Ra, to be determined.

Ämnesområden: Toleranser och passningar
Kommittébeteckning: SIS/TK 507 (Tekniska produktspecifikationer (TPS))
Källa: ISO
Svarsdatum: den 30 aug 2019
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This part of ISO 8062 specifies general dimensional and geometrical tolerances as well as machining allowance grades for castings as delivered to the purchaser in accordance with ISO 8062-2. It is applicable for tolerancing of dimensions and geometry of castings in all cast metals and their alloys produced by various casting manufacturing processes.

This part of ISO 8062 applies to both general dimensional and general geometrical tolerances (referred to in or near the title block of the drawing), unless otherwise specified and where specifically referred to on the drawing by one of the references in clause 9.

The dimensional tolerances covered by this part of ISO 8062 are tolerances for linear dimensions.

The geometrical tolerances covered by this part of ISO 8062 are: Tolerances for straightness, flatness, roundness, parallelism, perpendicularity, symmetry and coaxiality.

This part of ISO 8062 can be used for the selection of tolerance values for individual indications.

NOTE This part of ISO 8062 does not apply to 3D CAD models used without indicated dimensions.

Kommittébeteckning: SIS/TK 269 (Information för byggande och förvaltning)
Källa: ISO
Svarsdatum: den 5 sep 2019
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This international standard defines terms that are commonly used in procedures for setting out, measurement and surveying in buildings and civil engineering works.

Kommittébeteckning: SIS/TK 424 (Kemiska vattenundersökningar)
Källa: CEN
Svarsdatum: den 20 sep 2019
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This document provides guidelines to enable testing laboratory using rapid test methods on all types of water samples that may be contaminated following a nuclear or radiological emergency situation:

— taking into account the specific context for the tests to be performed, e.g. an unknown and potentially unusual high level of contamination;

— using or adjusting, when possible, radioactivity test method implemented during routine situation to obtain a result rapidly or applying specific rapid test methods previously validated by the laboratory, e.g. for 89Sr determination;

— preparing the test laboratory to measure a large number of potentially contaminated samples.

The aim of this document is to ensure decision makers have reliable results needed to take actions on time and minimize the dose to the public.

Measurements are performed in order to minimize the risk for the public in checking the water quality of water supplies. For emergency situations, test results are compared to operational intervention levels.

Note Operational intervention levels (OILs) are derived from IAEA Safety Standards[13] or national authorities[5].

A key can be to use the usual and routine methods in a faster manner. The goal of these rapid measurements is often to check an unusual radioactivity level in the test sample, to identify the radionuclides and their activity concentration levels and to establish compliance of the sampled water with intervention levels[21]. It should be noted that in such circumstances validation parameters are not always valid (impossible use of standard measuring geometries for gamma spectrometry…) and thus uncertainties associated with the test results may increase.

The first steps of the analytical approach is usually based on gross alpha and gross beta test methods considered as screening methods (adaptation of ISO 10704 and ISO 11704) and gamma spectrometry (adaptation of ISO 20042, ISO 10703 and ISO 19581). Then, when necessary[3], test method standards for specific radionuclides are adapted and applied (for example, 90Sr measurement following ISO 13160) as proposed in Annex A.

This document refers to a set of already published ISO standards. When appropriate, this document also refers to national standards or other publically available documents.

Screening techniques that can be carried out directly in the field are not part of this document.