This specification is applicable to the calibration of metal wire mesh and metal perforated plate test sieves with a size of (0.020~125)mm. JJF 1175-2007 Calibration specification for test sieves JJF1175-2007 Standard download decompression password: www.bzxz.net
This specification is applicable to the calibration of metal wire mesh and metal perforated plate test sieves with a size of (0.020~125)mm.

National Metrology Technical Specification of the People's Republic of China JJF1175--2007
Calibration Specification for Test SievesIssued on 2007-02-28
Implementation on 2007-05-28
Issued by the General Administration of Quality Supervision, Inspection and Quarantine JJF1175-2007
Calibration Specification for Test Sieves
Calibration Specification for Test Sieves JJF1175-2007
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine on February 28, 2007, and came into effect on May 28, 2007.
Responsible unit: National Technical Committee on Geometric Engineering Parameters Major drafting unit: Heilongjiang Metrology Verification and Testing Institute Shaanxi Metrology Science Institute
Participating drafting units: Hebei Metrology Science Institute Henan Metrology Testing Institute
Fujian Metrology Science and Technology Institute
This specification shall be interpreted by the responsible unit
Main drafters of this specification:
JJF1175—2007
Cai Lianjiachu Long Chuangfa
Zhang Liping (Heilongjiang Metrology Verification and Testing Institute) Zhang Lei (Shaanxi Metrology Science Institute) Liang Yuhong (Heilongjiang Metrology Verification and Testing Institute) Participating drafters:
Wang Shaoping (Hebei Metrology Science Institute) Jia Xiaojie (Henan Metrology Testing Institute)geaniid ita
Liao Yishui (Fujian Institute of Metrology Science and Technology) Wang Xiaoliang (Heilongjiang Institute of Metrology Verification and Testing) Office of the State Council
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1 Scope·bZxz.net
2 References…·
3 Terms and Definitions
3.1 Sieving…
3.2 Sieving Particle Size Analysis
4 Overview·
5 Metrological Characteristics
5.1 Metal Woven Wire Mesh Test Sieve
5.2 Metal Perforated Plate Test Sieve
6 Calibration Conditions·
6.1 Environmental Conditions
6.2 Conditions to be met by the calibrated test sieve
6.3 Calibration Equipment
7 Calibration Items and Calibration Methods Method
JJF1175—2007
Calibration of mesh size of wire woven test sieves 7.1
7.2 Calibration of mesh size of metal perforated plate test sieves 8 Expression of calibration results
9 Time interval for recalibration Appendix A Uncertainty analysis of mesh size measurement results of wire woven test sieves Appendix B Uncertainty analysis of mesh size measurement results of metal perforated plate test sieves Appendix C Contents of calibration certificate
1 Scope
JJF1175-—2007
Test sieve calibration specification
This specification applies to the calibration of wire woven test sieves with a size of (0.020~125) mm and metal perforated plate test sieves with a size of (1~125) mm
References
This specification refers to the following documents:
JJF1001—1998 General metrological terms and definitions JJF1059—1999 Evaluation and expression of measurement uncertainty JJF1094—2002 Technical specification for evaluation of measuring instrument characteristics JJF1130—2005 Guide for evaluation of uncertainty in calibration of geometric measuring equipment GB/T5329—2003 Test sieves and screening test terminology GB/T6003.1—1997 Woven wire mesh test sieve GB/T6003.2—1997 Perforated metal plate test sieve GB/T6005—1997 Basic dimensions of sieve holes of woven wire mesh, perforated plate and electroformed thin plate for test sieves ISO2395—1990 Test sieves and screening test terminology When using this specification, attention should be paid to using the currently valid versions of the above-mentioned references. 3 Terms and Definitions
3.1 Sieving
The process of separating discrete granular materials of different particle sizes by size using one or more sieves. 3.2 Size Analysis by Sieving The sample is separated into different particle sizes by sieving and the results are reported. 4 Overview
The test sieve is a sieve used for sieving and particle size analysis of granular materials. It is widely used in geological exploration, metallurgy and chemical industry, medicine, building materials, abrasives and other industries as well as scientific research institutes for particle size analysis and sieving tests. A set of test sieves consists of several sieves with different mesh sizes, a cover and a receiving tray, as shown in Figure 1. The arrangement of the mesh or mesh holes of the wire mesh test sieve and the metal perforated plate test sieve is shown in Figures 2, 3 and 4. 5 Measuring characteristics
5.1 Wire woven test sieve
5.1.1 Maximum size of mesh (@+X)
See Table 1 for the maximum size deviation of the mesh.
JJE1175-2007
Figure 1 Composition of sieve set
1-cover: 2-test sieve; 3-receiving tray
Figure 2 Measurement of mesh weaving form and mesh size of mesh sieve: 1-mesh size: d-wire diameter
Figure 3 Arrangement of circular holes of plate sieve and measurement of sieve hole size: 1-pitch: w-aperture
JJF1175-2007
Figure 5.1.2 Average size of mesh
See Table 1 for the average size deviation of mesh.
5.1.3 Average wire
HSTOXSM
Average wire diameter
One pitch; one square hole size
Table 1 Mesh size and deviation and wire diameter Basic mesh size
Mesh size deviation
Maximum size deviation of any mesh
Size deviation
Medium deviation
METROZOGY
Wire diameter
Basic mesh size
JJF1175—2007
Table 1 (continued)
Mesh size deviation
Maximum size deviation of any mesh
Average size deviation
Intermediate deviation
Wire diameter
Basic mesh size
JJF1175-—2007
Table 1 (continued)
Mesh size deviation
Maximum size deviation of any mesh
Average size deviation
Intermediate deviation
Wire diameter
di uin
Basic mesh size
JJF1175—2007
Table 1 (continued)
Mesh size deviation
Maximum size deviation of any mesh
Average size deviation
Medium deviation
Wire diameter
SSOOOMI
Note: z-X+1Yl
OOSHINA
080066
MEOROLOGY
0.0360.041
0.0320.037
0.0300.035
JJE1175-2007
5.1.4 The number of mesh sizes between the maximum size (+X) and the middle size (+Z) shall not exceed 6% of the total number of meshes. If the total number of meshes is less than 50, it shall not exceed 3. 5.2 Metal perforated plate test sieve
5.2.1 Mesh size
See Table 2 for the deviation of mesh size.
Table 2 Sieve hole size, deviation
Basic size of sieve hole ()
LNSAODDLE
Sieve hole size deviation (±)
SIOEPAY
METROLOGY
Basic size of sieve hole ()
JJF1175—2007
Table 2 (continued)
Sieve hole size deviation ()
Note: As a calibration, it does not judge whether it is qualified or not. The above-mentioned metrological characteristics are for reference only. mm
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