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JJF 1827-2020: Calibration Specification for Cement Fineness Negative Pressure Screen Analyzers
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Calibration Specification for Cement Fineness Negative Pressure Screen Analyzers
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JJF 1827-2020
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Basic data | Standard ID | JJF 1827-2020 (JJF1827-2020) | | Description (Translated English) | Calibration Specification for Cement Fineness Negative Pressure Screen Analyzers | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A53 | | Classification of International Standard | 17.100 | | Word Count Estimation | 16,165 | | Date of Issue | 2020 | | Date of Implementation | 2020-04-17 | | Issuing agency(ies) | State Administration for Market Regulation | JJF 1827-2020: Calibration Specification for Cement Fineness Negative Pressure Screen 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 Cement Fineness Negative Pressure Sieve Analyzer)
National Metrology Technical Specifications of the People's Republic of China
Calibration specification for cement fineness negative pressure sieve analyzer
ScreenAnalyzers
2020-01-17 released
2020-04-17 implementation
Issued by the State Administration for Market Regulation
Cement fineness negative pressure sieve analyzer
Calibration specification
Focal point. National Pressure Measurement Technical Committee
Main drafting unit. Hubei Institute of Metrology and Testing Technology
Guizhou Metrology and Testing Institute
Fujian Institute of Metrology
Participated in the drafting. Xinjiang Uygur Autonomous Region Metrology and Testing Research Institute
Jilin Institute of Metrology
This specification entrusts the National Pressure Measurement Technical Committee to be responsible for interpretation
The main drafters of this specification.
He Yunbu (Hubei Institute of Metrology and Testing Technology)
Li Qian (Guizhou Metrology and Testing Institute)
Lin Jingxing (Fujian Institute of Metrology)
Participating drafters.
Chen Wuqing (Xinjiang Uygur Autonomous Region Metrology and Testing Research Institute)
Junfeng Sun (Jilin Institute of Metrology)
Tu Xiaobin (Hubei Institute of Metrology and Testing Technology)
Zhu Shuang (Hubei Institute of Metrology and Testing Technology)
table of Contents
Introduction (Ⅱ)
1 scope (1)
2 Reference documents (1)
3 Terms and measurement units (1)
3.1 Term (1)
3.2 Unit of measurement(1)
4 Overview (1)
5 Measurement characteristics (2)
5.1 Measuring range (2)
5.2 Indication error (2)
5.3 Return error (2)
5.4 Insulation resistance (2)
5.5 Noise (2)
5.6 Speed (2)
6 Calibration conditions (2)
6.1 Environmental conditions (2)
6.2 Measurement standards and other equipment (2)
7 Calibration items and calibration methods (2)
7.1 Appearance and functional inspection (2)
7.2 Indication error (3)
7.3 Return error (3)
7.4 Insulation resistance (3)
7.5 Noise(3)
7.6 Speed(4)
8 Calibration result expression (4)
8.1 Calibration data processing (4)
8.2 Calibration certificate (4)
8.3 Evaluation of calibration uncertainty (4)
9 Re-calibration interval (4)
Appendix A Original record of calibration of cement fineness negative pressure sieve analyzer (recommended style) (5)
Appendix B Inside page of calibration certificate (recommended style) (6)
Appendix C Example of Uncertainty Evaluation of Pressure Indication Calibration of Cement Fineness Negative Pressure Sieve Analyzer (8)
Introduction
JJF 1001-2011 "General Metrology Terms and Definitions", JJF 1059.1-2012 "Measuring Uncertainty Evaluation and
Representation", JJF 1071-2010 "Rules for the Compilation of National Metrology and Calibration Specifications" constitute support for the formulation of this calibration specification
Basic documents.
Also refer to JJG52-2013 "Elastic element type general pressure gauge, pressure vacuum gauge and vacuum gauge",
GB/T 1345-2005 "Cement Fineness Inspection Method Sieve Analysis Method", GB/T 5329-2003 "Test Sieve and Sieve Test
Terminology" technical document.
This specification is released for the first time.
Calibration specification for cement fineness negative pressure sieve analyzer
1 Scope
This specification applies to the calibration of the non-test sieve part of the cement fineness negative pressure sieve analyzer (hereinafter referred to as the sieve analyzer).
2 Reference documents
This specification refers to the following documents.
JJG52-2013 elastic element type general pressure gauge, pressure vacuum gauge and vacuum gauge
GB/T 1345-2005 Cement fineness inspection method sieve analysis method
GB/T 5329-2003 Test sieve and sieving test terminology
For dated reference documents, only the dated version applies to this specification; for undated references
The latest version (including all amendments) is applicable to this specification.
3 Terms and units of measurement
3.1 Term
The following terms and definitions defined in GB/T 1345-2005 and GB/T 5329-2003 apply to this code.
3.1.1 Sieving
The process of separating different particles according to size with one or more sieves.
[GB/T 5329-2003, Terms and Definitions 2.3.1]
3.1.2 Test sieve testsieve
A sieve that meets the technical requirements of the test sieve standard and is used for particle size analysis by sieving method.
[GB/T 5329-2003, Terms and Definitions 2.2.2]
3.1.3 Vacuumsieving
Using a negative pressure sieve analyzer, the constant air flow generated by the negative pressure source will make the cement in the test sieve within the specified sieve analysis time
Reach the screening.
[GB/T 1345-2005, Terms and Definitions 4.1]
3.2 Unit of measurement
The legal measurement unit used for the pressure parameter of the sieve analyzer is Pa (Pascal), or its decimal multiple unit.
4 overview
The sieve analyzer is an industry-specific instrument with metrological performance for sieve analysis of cement fineness.
The sieve analyzer is composed of a sieve seat, a test sieve, a negative pressure source and a dust suction unit. The sieve seat is composed of an air nozzle, a negative pressure gauge, and a time
It is composed of a controller, a motor and a housing.
The sieve analyzer adopts the negative pressure sieve analysis method. Its working principle is to use airflow as the motive medium for sieving.
The industrial vacuum cleaner keeps the entire system in the specified negative pressure state, and the powder material to be tested in the screen is in the rotating air nozzle
The ejected air flow becomes a fluid under the action of the air flow, and moves with the air flow. The material with a particle diameter smaller than the screen aperture is caused by the air flow.
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