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JJF 1211-2008 English PDF

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JJF 1211-2008: Calibration Specification for Static Light Scattering Particle Size Analyzers
Status: Valid

JJF 1211: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1211-2008	English	309	Add to Cart	3 days [Need to translate]	Calibration Specification for Static Light Scattering Particle Size Analyzers	Valid	JJF 1211-2008
JJF 1211-1990	English	199	Add to Cart	2 days [Need to translate]	O.T.N.of Flatness Primary Standard	Obsolete	JJF 1211-1990

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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	13,116
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)

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%.

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