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JJG 195-2019: Continuous Totalizing Automatic Weighing Instruments(Belt Weighers)
Status: Valid JJG 195: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 195-2019 | English | 489 |
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Continuous Totalizing Automatic Weighing Instruments(Belt Weighers)
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JJG 195-2019
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| JJG 195-2007 | English | RFQ |
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Loading Instrument of Wheel Loader for Railway
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JJG 195-2007
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| JJG 195-2002 | English | RFQ |
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Verification regulation of Continuous Totalizing Automatic Weighing Instruments (Belt Weigher)
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JJG 195-2002
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| JJG 195-1979 | English | 199 |
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(Roller belt scale trial test procedures)
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JJG 195-1979
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PDF similar to JJG 195-2019
Basic data | Standard ID | JJG 195-2019 (JJG195-2019) | | Description (Translated English) | Continuous Totalizing Automatic Weighing Instruments(Belt Weighers) | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A53 | | Classification of International Standard | 17.100 | | Word Count Estimation | 22,220 | | Date of Issue | 2019 | | Date of Implementation | 2020-03-31 | | Issuing agency(ies) | State Administration for Market Regulation | JJG 195-2019: Continuous Totalizing Automatic Weighing Instruments(Belt 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.
(Verification Regulation of Continuous Accumulation Automatic Weighing Apparatus (Belt Scale))
National Metrological Verification Regulations of the People's Republic of China
Continuous cumulative automatic weighing instrument (belt scale)
2019-12-31 released
2020-03-31 Implementation
Issued by the State Administration for Market Regulation
Continuous cumulative automatic weighing instrument
(Belt Scale) Verification Regulations
Replace JJG 195-2002
Verification part
Focal point. National Weighing Instrument Metrology Technical Committee Automatic Weighing Instrument Sub-Technical Committee
Main drafting unit. Jiangsu Institute of Metrology
Qingdao Institute of Metrology Technology
Participated in the drafting. Nanjing Sanai Industrial Control Co., Ltd.
Saimo Electric Co., Ltd.
This regulation entrusts the National Weighing Instrument Metrology Technical Committee Automatic Weighing Instrument Sub-Technical Committee to be responsible for the interpretation
The main drafters of this regulation.
Li Bingying (Jiangsu Institute of Metrology)
Hu Qiang (Jiangsu Institute of Metrology)
Wang Junguo (Qingdao Institute of Metrology)
Participating drafters.
Lu Qinsheng (Nanjing Sanai Industrial Control Co., Ltd.)
He Fusheng (Saimo Electric Co., Ltd.)
Jian Zhang (Jiangsu Institute of Metrology)
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 (2)
4 Overview (2)
5 Measurement performance requirements (2)
5.1 Accuracy level (2)
5.2 Maximum allowable error (2)
5.3 The form of graduation value (3)
5.4 Minimum cumulative load (3)
5.5 Minimum flow (3)
5.6 Consistency among multiple indicating devices (3)
5.7 Repeatability (4)
5.8 Maximum allowable error of zero accumulation (4)
5.9 Discrimination of cumulative zero points (4)
5.10 Maximum deviation test with zero load (4)
6 General technical requirements (4)
6.1 Applicability of verification (4)
6.2 Operational safety (4)
6.3 Descriptive mark (5)
6.4 Verification mark (6)
7 Measuring instrument control (6)
7.1 Verification conditions (6)
7.2 Verification items (7)
7.3 Verification method (7)
7.4 Processing of verification results (11)
7.5 Verification cycle (11)
Appendix A Verification Record Format of Belt Scale (Recommendation) (12)
Appendix B Format of the inner page of the verification certificate (15)
Appendix C Inner Page Format of the Verification Results Notice (16)
Introduction
In principle, this Regulation is revised to adopt the International Recommendation OIMLR50-12014 (E) of the International Organization for Legal Metrology.
Continued cumulative automatic weighing instrument (belt scale) Part 1.Measurement and technical requirements "[ContinuousTotalizingAu-
tomaticWeighingInstruments(BeltWeighers)-Part 1.MetrologicalandTechnical
Requirements], revise JJG 195-2002 "Continuous Accumulative Automatic Weighing Instrument (Belt Scale)", and combine
The actual situation of continuous accumulative automatic weighing instrument (belt scale) verification in my country has retained JJG 195-2002
The content still applicable in "Automatic Weighing Instrument (Belt Scale)". According to JJF1002-2010 "National Metrological Verification Regulations"
Write the rules of "Rules" to write.
Compared with JJG 195-2002, in addition to editorial changes, the main technical changes of this regulation are as follows.
--- Level 0.2 and related requirements have been added to the accuracy level of the belt scale (see 5.1);
---Clarified that this regulation is only applicable to the first verification and subsequent verification of continuous accumulative automatic weighing instrument (belt scale)
And in-use inspection, the type evaluation of continuous cumulative automatic weighing instrument (belt scale) is no longer applicable (see 1);
---The requirements for type evaluation have been deleted;
--- Only some of the terms applicable to verification are selected (see 3.1);
---The content of follow-up verification and in-use inspection was modified in a targeted manner, and the difficult-to-implement "accumulated zero" was deleted.
Point discrimination" verification item; replace the maximum flow, minimum flow and intermediate flow with common feed flow for material inspection
Fixed (see 7.2);
---Added requirements for electronic seal devices (see 6.3.2);
---Added Appendix A. Verification Record Format (Recommendation), Appendix B. Verification Certificate Inner Page Format and Appendix
C. The format of the inner page of the verification result notice (see Appendix A, Appendix B and Appendix C).
The release status of previous versions of this regulation.
---JJG 195-2002;
---JJG 195-1979.
Verification Regulations of Continuous Accumulation Automatic Weighing Instrument (Belt Scale)
1 Scope
This regulation is applicable to the first verification, subsequent verification and in-use inspection of continuous cumulative automatic weighing instrument (belt scale).
2 Reference documents
This regulation refers to the following documents.
JJF1181 Weighing instrument measurement terms and definitions
For dated reference documents, only the dated version is applicable to this regulation; for all undated references
The latest version (including all amendments) is applicable to this regulation.
3 Terms and units of measurement
3.1 Term
The terms used in this regulation are consistent with JJF1181 "Weighing Apparatus Measurement Terms and Definitions", which is convenient for use.
And easy to understand lists some terms, and added special terms that only apply to this regulation.
3.1.1 Continuous totalizing automatic weighing instrument (belt scale) continuoustotalizingautomatic weighing instrument
ments(beltweighers)
It is an automatic weighing instrument that continuously weighs the bulk materials on the conveyor belt without interrupting the movement of the conveyor belt.
3.1.2 Totalization device
The device uses the information provided by the scale body and the displacement sensor to complete the accumulation of partial loads or realize the load per unit length
Integral of the product of (load/unit length) and belt speed.
3.1.3 Weighingunit
A device that provides information on the quality of the measured load on a belt scale.
3.1.4 Totalization scale interval (dt) totalizationscaleinterval
In the normal weighing mode of the belt scale, the total cumulative display or part of the cumulative display is expressed in mass units.
The difference between two adjacent display values.
3.1.5 Weighlength (WL)
At the end of the belt scale carrier, weigh the two false ones at the 1/2 distance between the roller shaft and the closest conveying roller shaft.
Think about the distance between the lines.
When there is only one weighing roller, it is equal to 1/2 of the distance between the closest conveying roller shafts on both sides of the weighing roller.
Note. The weighing length is not suitable for conveyor belt scales.
3.1.6 Complete belt loop (belt circumference) completebeltrevolution(beltlength)
The total length of the conveyor belt for one cycle.
3.1.7 (Max) maximumcapacity
On the part of the conveyor belt that represents the weighing length, the maximum net load that the weighing unit can weigh (from the bulk material
The load generated does not include the load generated by the belt itself).
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