BS ISO 9276-2:2014
Current
The latest, up-to-date edition.
Representation of results of particle size analysis Calculation of average particle sizes/diameters and moments from particle size distributions
Hardcopy , PDF
English
31-05-2014
Important note : Users cannot be edited or removed once added to your Multi user PDF.
Foreword
Introduction
1 Scope
2 Normative references
3 Definitions, symbols and abbreviated terms
4 The moment-notation
5 The moment-ratio-notation
6 Relationship between moment-notation and
moment-ratio-notation
7 Accuracy of calculated particle size distribution
parameters
Annex A (informative) - Numerical example for calculation
of mean particle sizes and standard deviation
from a histogram of a volume based size
distribution
Annex B (informative) - Numerical example for calculation
of mean particle sizes and standard deviation from
a histogram of a volume based size distribution
Annex C (informative) - Accuracy of calculated particle size
distribution parameters
Bibliography
Specifies relevant equations and coherent nomenclatures for the calculation of moments, mean particle sizes and standard deviations from a given particle size distribution.
| Committee |
LBI/37
|
| DevelopmentNote |
Supersedes 97/123764 DC. (03/2005) Supersedes 12/30269757 DC. (05/2014)
|
| DocumentType |
Standard
|
| Pages |
38
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO9276 provides relevant equations and coherent nomenclatures for the calculation of moments, mean particle sizes and standard deviations from a given particle size distribution. Two notation systems in common use are described. One is the method of moments while the second describes the moment-ratio method. The size distribution may be available as a histogram or as an analytical function.
The equivalent diameter of a particle of any shape is taken as the size of that particle. Particle shape factors are not taken into account. It is essential that the measurement technique is stated in the report in view of the dependency of sizing results of measurement principle. Samples of particles measured are intended to be representative of the population of particles.
For both notation systems, numerical examples of the calculation of mean particle sizes and standard deviation from histogram data are presented in an annex.
The accuracy of the mean particle size may be reduced if an incomplete distribution is evaluated. The accuracy may also be reduced when very limited numbers of size classes are employed.
| Standards | Relationship |
| ISO 9276-2:2014 | Identical |
| BS 8471:2007 | Guide to particle sizing methods |
| ISO 9276-1:1998 | Representation of results of particle size analysis — Part 1: Graphical representation |
| ISO 9276-3:2008 | Representation of results of particle size analysis — Part 3: Adjustment of an experimental curve to a reference model |
| ISO 565:1990 | Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings |
| ISO 9276-5:2005 | Representation of results of particle size analysis Part 5: Methods of calculation relating to particle size analyses using logarithmic normal probability distribution |
| ISO 3534-1:2006 | Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.