ISO 21501-4:2018
2018-05
No disponible en español
Resumen
This document describes a calibration and verification method for a light scattering airborne particle counter (LSAPC), which is used to measure the size distribution and particle number concentration of particles suspended in air. The light scattering method described in this document is based on single particle measurements. The typical size range of particles measured by this method is between 0,1 μm and 10 μm in particle size.
Instruments that conform to this document are used for the classification of air cleanliness in cleanrooms and associated controlled environments in accordance with ISO 14644‑1 and ISO 14644‑2, as well as the measurement of number and size distribution of particles in various environments.
The following parameters are within the scope of this document:
— size setting error;
— counting efficiency;
— size resolution;
— false count;
— maximum particle number concentration;
— sampling flow rate error;
— sampling time error;
— response rate;
— calibration interval;
— reporting results from test and calibration.
Informaciones generales
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Estado: PublicadoFecha de publicación: 2018-05Etapa: Norma Internacional confirmada [90.93]
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Edición: 2Número de páginas: 25
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Comité Técnico :ISO/TC 24/SC 4ICS :19.120
- RSS actualizaciones
Modificaciones
Las enmiendas se emiten cuando se decide que puede ser necesario agregar nuevo material a un documento de normalización existente. También pueden incluir correcciones editoriales o técnicas que deban aplicarse al documento existente.
Amendment 1
Edición 2023
Ciclo de vida
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Anteriormente
RetiradaISO 21501-4:2007
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Ahora
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00
Preliminar
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10
Propuesta
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20
Preparación
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30
Comité
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40
Consulta
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50
Aprobación
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60
Publicación
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90
Revisión
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95
Retirada
Modificaciones
Aportan contenido adicional; Disponible para su compra; No incluidas en el texto de la norma existentePublicadoISO 21501-4:2018/Amd 1:2023
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00
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