Norm

NEN-EN-ISO 4080:2010 en

Rubber- en kunststofslangen en slangassemblages - Bepaling van de gasdiffusie

52,53

Over deze norm

Status Definitief
Aantal pagina's 3
Commissie Slangen en compensatoren
Gepubliceerd op 01-01-2010
Taal Engels
This part of ISO 8253 specifies relevant test signal characteristics, requirements for free, diffuse, and quasi-free sound fields, and procedures for sound field audiometry using pure tones, frequency-modulated tones or other narrow-band test signals presented by means of one or more loudspeakers. The primary purpose is the determination of hearing threshold levels in the frequency range 125 Hz to 8 000 Hz, but this range can be extended to 20 Hz to 16 000 Hz. This part of ISO 8253 does not include specifications for the use of hand-held loudspeakers. Speech as a test signal is not covered. The purpose of this part of ISO 8253 is to ensure that tests of hearing, using sound field audiometry, give as high a degree of accuracy and reproducibility as possible. Examples of graphical representations of the results are given in Annex A.

Details

ICS-code 23.040.70
Nederlandse titel Rubber- en kunststofslangen en slangassemblages - Bepaling van de gasdiffusie
Engelse titel Rubber and plastics hoses and hose assemblies - Determination of permeability to gas
Vervangt

Winkelwagen

Subtotaal:

Ga naar winkelwagen