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JJF 1211: Historical versions
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| JJF 1211-2008 | English | 309 |
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Calibration Specification for Static Light Scattering Particle Size Analyzers
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| JJF 1211-1990 | English | 199 |
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O.T.N.of Flatness Primary Standard
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Basic data
| Standard ID | JJF 1211-2008 (JJF1211-2008) |
| Description (Translated English) | Calibration Specification for Static Light Scattering Particle Size Analyzers |
| Sector / Industry | Metrology & Measurement Industry Standard |
| Classification of Chinese Standard | A60 |
| Classification of International Standard | 17.180 |
| Word Count Estimation | 13,156 |
| Date of Issue | 2008-09-27 |
| Date of Implementation | 2009-01-01 |
| Quoted Standard | JJF 1001-1998; GB/T 19077.1-2008; JJF 1071-2000 |
| Regulation (derived from) | AQSIQ Announcement No. 112 of 2008 |
| Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine |
| Summary | This standard is applicable for measuring dispersion of solid particles in a liquid medium particle size and distribution of the static light scattering principle of laser particle size analyzer (hereinafter referred to as the instrument) for calibration. |
JJF 1211-2008: Calibration Specification for Static Light Scattering Particle Size Analyzers
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Static Light Scattering Particle Size Analyzers
People's Republic of China National Metrology Technical Specifications
Laser particle size analyzer calibration specification
Posted 2008-09-27
2009-01-01 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
Laser particle size analyzer calibration specification
zers
This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on September 27, 2008, and from
From January 1, 2009 implementation.
Focal point. the National Technical Committee stoichiometric physical
Drafting units. China Institute of Metrology
This specification stoichiometric commissioned National Technical Committee is responsible for the physical interpretation
The main drafters of this specification.
Zhang Ge (China Institute of Metrology)
Junjie Liu (China Institute of Metrology)
Drafters participate.
Hu Rongze (Beijing Iron and Steel Research Institute)
Huang Xiaoguang (Hebei Science Institute of Measurement)
table of Contents
1 Scope (1)
2. Referenced Documents (1)
3 terminology and units of measurement (1)
4 Overview (1)
5 Metrological characteristics (1)
5.1 Repeatability measuring instrument (1)
5.2 Instrument relative error (2)
5.3 Instrument Resolution (2)
6 General Requirements (2)
6.1 appearance inspection (2)
6.2 supply voltage on the instrument indication (2)
6.3 Insulation Resistance (2)
7 calibration conditions (2)
7.1 environmental conditions (2)
7.2 standard devices and other equipment (2)
8 calibration items and calibration methods (3)
8.1 Visual inspection (3)
Instrument calibration measurement repeatability of 8.2 (3)
8.3 instruments to measure the relative error of calibration (4)
8.4 Resolution instrument calibration (4)
8.5 supply voltage variations on the instrument indication (4)
8.6 Insulation resistance (4)
9 calibration results expression (4)
Recalibration interval 10 (4)
Appendix A filtered distilled water Preparation (5)
Appendix B calibration records in the page format (6)
Appendix C calibration certificate page format (8)
Laser particle size analyzer calibration specification
1 Scope
This standard applies to static light scattering measurement principle dispersed in a liquid medium solid particle size and distribution of
Laser particle size analyzer (hereinafter referred to as equipment) calibration.
2 Citations
JJF 1001-1998 "common measurement terms and definitions"
GB/T 19077.1-2008 "laser diffraction particle size analysis - Part 1. General"
JJF 1071-2000 "National Calibration Specifications writing rules"
When using this specification it should be noted that using the currently valid version of the documents cited.
3 terminology and units of measurement
Weight (volume) distribution median diameter D50 [mediandiameterofweight (volume) distribution].
Also known as the "median diameter" or "accumulated intermediate values", refers to the weight of the particles (by volume) cumulative distribution curve representing the cumulative value just
When 50% of the corresponding particle diameter D50 commonly expressed.
4 Overview
Laser particle size analyzer consists of a laser, the sample cell, photoelectric detectors, signal amplification and A/D converting means,
Instrument control and machine size and particle size distribution calculated for the composition, the structure shown in Figure 1.
Figure 1 Schematic laser particle size analyzer
The principle is. a representative sample of particles of a certain concentration of the dispersion in a suitable liquid medium, a light beam
(Usually a laser) through the media, after experiencing light scattering particles at various angles, measured by the detector as these multivariate
Reflected light intensity, and the corresponding values recorded on the scatter plot for subsequent analysis. Use the appropriate optical model and mathematical
Model into the light scattering data to derive the particle size and distribution of the sample.
5 Metrological characteristics
5.1 Instrument measurement repeatability
When the same size of a standard material weight (volume) median diameter D50 (hereinafter referred to as D50) and repeat the measurement instrument
The relative standard deviation of the measured value is not more than 3%.
...
