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JJG 648-2017 English PDF

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JJG 648-2017: Discontinuous Totalizing Automatic Weighing Instruments(Totalizing Hopper Weighers)
Status: Valid

JJG 648: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 648-2017English509 Add to Cart 4 days [Need to translate] Discontinuous Totalizing Automatic Weighing Instruments(Totalizing Hopper Weighers) Valid JJG 648-2017
JJG 648-1996EnglishRFQ ASK 6 days [Need to translate] Discontinuous totalizing automatic weighing instruments (totalizing hopper weighers) Obsolete JJG 648-1996
JJG 648-1990EnglishRFQ ASK 3 days [Need to translate] (Chinese Industry Standard) Obsolete JJG 648-1990

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Basic data

Standard ID JJG 648-2017 (JJG648-2017)
Description (Translated English) Discontinuous Totalizing Automatic Weighing Instruments(Totalizing Hopper Weighers)
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Classification of International Standard 17.100
Word Count Estimation 22,211
Date of Issue 2017-09-26
Date of Implementation 2018-03-26
Older Standard (superseded by this standard) JJG 648-1996
Quoted Standard JJG 99; JJF 1181-2007; OIML R107-1-2007(E)
Regulation (derived from) General Administration of State Quality Inspection Announcement 2017 No. 78
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard is applicable to the first verification, subsequent verification and in-service inspection of discontinuous cumulative automatic weighing instruments (hereinafter referred to as ��accumulated hopper scales��). This standard does not apply to the following types of cumulative hopper scales: 1) "dynamic weighing" of the cumulative hopper scales; 2) The accumulated hopper scales are obtained by multiplying the weight of the preset constant load by a plurality of weighing cycles.

JJG 648-2017: Discontinuous Totalizing Automatic Weighing Instruments(Totalizing Hopper Weighers)


---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.
(Non - continuous cumulative automatic weighing (cumulative hopper scale) verification procedures) People's Republic of China National Metrological Verification Procedures Non-continuous cumulative automatic weighing (Cumulative hopper scale) 2017-09-26 Posted 2018-03-26 implementation General Administration of Quality Supervision, Inspection and Quarantine released Non-continuous cumulative automatic weighing (Cumulative hopper scale) test procedures Replacing JJG 648-1996 Verification section The focal point. National Weighing Metering Technology Committee The main drafting unit. Qingdao Institute of Measurement Technology China Institute of Metrology Beijing Institute of Metrology and Measurement Shandong Bo Seok Electronics Co., Ltd. Participate in the drafting unit. Jinan Admiralty Electronic Weighing Co., Ltd. Qingdao Best Electric Co., Ltd. This procedure entrusts the National Weighing Technical Committee responsible for the interpretation The main drafters of this procedure. Wang Jun (Qingdao Institute of Metrology Technology) Yu Xuguang (Qingdao Institute of Metrology Technology) Zhong Ruilin (China Institute of Metrology) Liu Wei (Beijing Institute of Metrology and Measurement) Huang Xiang Ting (Shandong Bo Shuo Electronics Co., Ltd.) Participate in the drafters. Fan Shao Chen (Jinan Admiralty weighing Electronics Co., Ltd.) Lin Dong (Qingdao Best Electric Co., Ltd.)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Terms and measurement units (1) 4 Overview (2) 5 measurement performance requirements (2) 5.1 Accuracy level (2) 5.2 The maximum allowable error (3) 5.3 The form of division value (3) 5.4 Cumulative division value (3) 5.5 Minimum cumulative load value (3) 5.6 Consistency of multiple pointing devices (4) 6 General technical requirements (4) 6.1 Test Applicability (4) 6.2 Operational safety (4) 6.3 zero accuracy (4) 6.4 Description of signs (4) 6.5 test mark (5) 7 measuring equipment control (6) 7.1 test conditions (6) 7.2 test items (10) 7.3 Test Method (10) 7.4 test results of the treatment (12) 7.5 Verification Period (12) Appendix A separation test method of verification record format (recommended) (13) Appendix B verification method of integration test record format (recommended) (14) Appendix C Verification Certificate Internal Page Format (Recommended) (16) Appendix D Certificate Result Internal Page Format (Recommended) (17)

Introduction

This code refers to the international recommendations OIMLR107-12007 (E) "non-continuous cumulative automatic weighing (cumulative hopper Scale) Part 1. Measurement and technical requirements of the test, "JJG 648-1996" non-continuous cumulative automatic weighing device " Verification procedures for revision, combined with China's non-continuous cumulative automatic weighing (cumulative hopper scale) test the actual situation, Retained JJG 648-1996 Bank of effective content. In the preparation of the implementation of the format JJF1002-2010 "country Metrology test procedures for the preparation of rules. " Compared with JJG 648-1996, in addition to editorial changes, the main technical changes of this procedure are as follows. --- Procedures for the name changed to "non-continuous cumulative automatic weighing instrument (cumulative hopper scale)", the name and OIML R107 same --- Clarified that this procedure only applies to the non-continuous cumulative automatic weighing (cumulative hopper scale) for the first test, follow-up Test and use of inspection, not applicable to non-continuous cumulative automatic weighing (cumulative hopper scale) type evaluation; --- Removed the requirements of type evaluation and type evaluation form, these contents included in the JJF1639-2017 "non Continuous cumulative automatic weighing (cumulative hopper scale) type evaluation outline "; --- Only select some of the terms applicable to the test; --- The static weighing in this procedure refers to the requirements when used as a control weighing instrument; --- Refine the first test, follow-up test and use of the contents of the inspection, an increase of test items list; --- Increased requirements for electronic seal device; --- Added Appendix A, B test record format, Appendix C test certificate page format and Appendix D test results Fruit notice page format. This version of the previous version of the release. --- JJG 648-1996; --- JJG 648-1990. Non-continuous cumulative automatic weighing (Cumulative hopper scale) test procedures

1 Scope

This code applies to the non-continuous cumulative automatic weighing instrument (hereinafter referred to as "cumulative hopper scale") for the first test, follow-up Check and use the check. This procedure does not apply to the following types of cumulative hopper scales. --- "Dynamic weighing" of the cumulative hopper scale; --- Accumulative hopper scale with cumulative bulk load multiplied by the mass of the preset constant load over several weighing cycles.

2 reference documents

The procedures cited in the following documents. JJG 99 weight Weighing terms and definitions for weighing instruments OIMLR107-12007 (E) Non-Continuous Cumulative Automatic Weighing Scale (Hopper Scale) Part 1. Metering And technical requirements of the test (Discontinuoustotalizingautoweighweighinginstruments (Totalizing Hopperweighers) -Part 1.Metrologicalandtechnicalrequirements-tests) For dated references, only the dated version applies to this edition; any undated reference The latest version (including all amendments) applies to this procedure.

3 Terms and measurement units

3.1 Terms The terms used in this protocol are consistent with JJF1181-2007 "Terms and definitions of Weighing Terminology" Some terms are quoted in terms of convenience and ease of understanding, and add specific terms that apply only to this procedure. 3.1.1 non-continuous cumulative automatic weighing (cumulative hopper scale) discontinuoustotalizingautomaticweig- hinginstruments (totalizinghopperweighers) By dividing a group of bulk materials into a number of separate loads, the mass of each separation load is determined in turn, cumulatively The result is an automatic weighing instrument that discharges the separation load to obtain the bulk of the batch. 3.1.2 totalization device totalizationdevice Cumulative hopper scale to calculate the continuous weighing and unloading the total load device. 3.1.3 cumulative sub-degree (dt) totalizationscaleinterval (dt) Cumulative hopper scale total indicator device indexing. 3.1.4 control index (d) controlscaleinterval (d) Cumulative hopper scale control indicating device indexing value. 3.1.5 weighing cycle weighingcycle The cumulative hopper scale weighing operation includes the following procedure.

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