Metrologi och mätning. Fysikaliska fenomen

Kommittébeteckning: SIS/TK 110 (Akustik och buller)
Källa: ISO
Svarsdatum: den 14 mar 2020
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This document specifies methods for recording the time history of the sound pressure produced by shooting with calibres of less than 20 mm or by detonation of explosive charges of less than 50 g TNT equivalent in locations within the shooting range. The location of the measurement can be the position of the shooter or any person in the shooting range. The time history of the sound pressure can be the basis for further analyses of exposure of persons to these kinds of sounds.

Kommittébeteckning: SIS/TK 507 (Tekniska produktspecifikationer (TPS))
Källa: CEN
Svarsdatum: den 17 mar 2020
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This document specifies the recommended proportions for the symbols used on technical product documentation. It gives recommended dimensions based on the grid related to the line width to be used.

This standard does not apply to symbols used in process plant documentation which is covered in ISO 81714-1.

The proportions of the symbols are based on the standard heights of lettering given in IS0 3098-l.

Kommittébeteckning: SIS/TK 329 (Anestesi- och respiratorutrustning)
Källa: CEN
Svarsdatum: den 18 mar 2020
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This document specifies general requirements for medical suction equipment that are common to all parts of the 10079 series.

The ISO 10079 series does not apply to the following:

a) end-pieces such as suction catheters, drains, curettes, Yankauer suckers and suction tips;

b) syringes;

c) dental suction equipment;

d) anaesthetic gas scavenging systems;

e) laboratory suction;

f) autotransfusion systems;

g) mucus extractors including neonatal mucus extractors;

h) suction equipment where the collection container is downstream of the vacuum pump;

i) ventouse (obstetric) equipment;

j) suction equipment marked for endoscopic use only

k) plume evacuation systems.

Ämnesområden: Strålningsmätning
Kommittébeteckning: SIS/TK 405 (Kärnenergi)
Källa: ISO
Svarsdatum: den 20 mar 2020
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This document specifies the reference neutron 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 reference neutron radiation fields. The procedures for applying these radiation fields for calibrations are described in ISO 8529-2 and ISO 8529-3.

The reference neutron 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 reference neutron radiation fields are divided, for the purposes of this document, into the following three separate sections.

— 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 reference neutron 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.

For the conversion of neutron fluence into the quantities recommended for radiation protection purposes, conversion coefficients have been calculated based on the spectra presented in normative Annex A and using the fluence-to-dose-equivalent conversion coefficients as a function of neutron energy as given in ICRP Publication 74 and ICRU Report 57.

Kommittébeteckning: SIS/TK 424 (Kemiska vattenundersökningar)
Källa: CEN
Svarsdatum: den 11 apr 2020
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This document specifies a method for the measurement of 14C activity concentration in all types of water samples by liquid scintillation counting either directly on the test sample or following a chemical separation.

The method is applicable to test samples of supply/drinking water, rainwater, surface and ground water, marine water, as well as cooling water, industrial water, domestic, and industrial wastewater.

The detection limit depends on the sample volume, the instrument used, the sample counting time, the background count rate, the detection efficiency and the chemical recovery. The method described in this document, using currently available liquid scintillation counters and suitable technical conditions has a detection limit as low as 1 Bq l−1, which is lower than the WHO criteria for safe consumption of drinking water (100 Bq·l-1). 14C activity concentrations can be measured up to 106 Bq l-1 without any sample dilution.

It is the user’s responsibility to ensure the validity of this test method for the water samples tested.

Ämnesområden: Mätinstrument
Kommittébeteckning: SIS/TK 507 (Tekniska produktspecifikationer (TPS))
Källa: CEN
Svarsdatum: den 13 apr 2020
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This document applies to the calibration of the metrological characteristics of contact (stylus) instruments for the measurement of surface texture by the profile method as defined in

ISO 3274. The calibration is to be carried out with the aid of measurement standards.

Annex B applies to the calibration of metrological characteristics of simplified operator contact (stylus) instruments which do not conform with ISO 3274.

Ämnesområden: Flöde i öppen kanaler
Kommittébeteckning: SIS/TK 432 (Hydrometri)
Källa: ISO
Svarsdatum: den 20 apr 2020
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This International Standard specifies a calibration method for mechanical type, electromagnetic current-meters 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 deals in particular with the measuring apparatus, the calibration procedure, the method of presenting the results and the uncertainties associated with the method.

Ämnesområden: Toleranser och passningar
Kommittébeteckning: SIS/TK 507 (Tekniska produktspecifikationer (TPS))
Källa: ISO
Svarsdatum: den 30 apr 2020
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This document gives the rules for geometrical dimensioning and tolerancing of final moulded parts andparts machined out of moulded parts. It also gives rules and conventions for the indications of theserequirements in technical product documentation and specifies the proportions and dimensions of thegraphical symbols to be used.

This document provides symbols which may be used to identify the relative completeness of the moulded features and parts. These graphical symbols should not be confused with the graphical symbols for surface texture according to ISO 1302, which are notably larger.

This document specifies general geometrical tolerances using surface profile tolerances related to a general datum system that remains on the final part. It specifies also machining allowances and draft angles (tapers) for castings in all cast metals and their alloys produced by various casting manufacturing processes.

This document establishes the general principles for presentation of general geometrical tolerances that apply to 2D technical drawings in all disciplines and trades but which can also be applied to 3D applications.

NOTE All figures are shown in 2D views only.

When cast datum surfaces are machined, this part of ISO 8062 is not applicable

Kommittébeteckning: SIS/TK 507 (Tekniska produktspecifikationer (TPS))
Källa: ISO
Svarsdatum: den 30 apr 2020
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This part of ISO 21920 specifies the rules for indication of profile surface texture in technical product documentation by means of graphical symbols. The indications of profile surface texture define requirements to the surface of a workpiece as well as the measurands for verification.

This part of ISO 21920 is only valid for profile surface texure requirements based on a single workpiece.