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GB/T 46398-2025Loss in weight feeder (English PDF)

失重秤

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 5, 2025

Implementation date

May 1, 2026

Scope

GB/T 46398-2025 is the English-translated version of 失重秤.

GB/T 46398-2025 is the Chinese standard "Loss in weight feeder". Its scope clause reads: This document specifies the classification and naming of loss-in-weight scales, metrological requirements, technical requirements, inspection rules, marking, packaging, transportation and storage, and descriptions.

The corresponding experimental methods were developed. This document applies to designs that utilize the principle of gravity to integrate a weighing hopper, material conveyor, motor, and load cell into a single, integrated force-bearing machine.

The structure uses a continuous weight output method, measuring the continuously decreasing weight value output in the material conveyor and comparing this value with a set value.

A loss-in-weight scale that aims to obtain accurate and continuous output (reduction) of weight and accumulate weighing results by approaching the control target value.

This document does not apply to electronic screw scales that use screw conveyors as carriers or constant-flow dynamic conveying systems that use belt conveyors as carriers. Quantitative belt scale.

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Document preview — GB/T 46398-2025

National Standard of the People's Republic of China

ICS: 17.100
Classification: N 13

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
Introduction
1.Scope
2 Normative References
3.Terms and Definitions
4.Classification and Naming
5.Measurement Requirements
5.1 Accuracy Class
5.2 Maximum permissible error
5.3 Minimum Cumulative Load (sigmamin)
5.4 Minimum flow rate (Qmin) and minimum weighing capacity
5.5 Units of Measurement
5.6 Static Performance Requirements
5.7 Requirements for Impact Factor Experiments
5.8 Material Testing Requirements
6.Technical Requirements 8.
6.1 Adaptability
6.2 Operational Safety
6.3 Cumulative display and printing device
6.4 Instructions for use beyond the scope of application
6.5 Loss-in-weight feeding control system
6.6 Auxiliary equipment
6.7 Sealing Device
6.8 Weighing Sensors
6.9 Velocity/Displacement Detection Device
6.10 Power-on self-test program
6.11 Anti-interference requirement
6.12 Warm-up time
6.13 Interface
6.14 Alternating Current (AC) Power Supply
6.15 Battery Power (DC)
6.16 Safety Performance
7.Test Methods
7.1 Preparations before the experiment
7.2 Static Performance Test
7.3 Impact Factor Experiment
7.4 Anti-interference test
7.5 On-site material testing
7.6 Safety performance test
7.7 Module
8.Inspection Rule
8.1 Type testing
8.2 Type Testing Requirements
8.3 Initial inspection and in-use inspection
8.4 Factory Inspection
9.Marking, Packaging, Transport and Storage
9.1 Mark
9.2 Packaging
9.3 Transportation
9.4 Storage
Appendix A (Normative) Impact Factor Experiment Procedure
Appendix B (Normative) Anti-interference Test Procedure

1 Scope

This document specifies the classification and naming of loss-in-weight scales, metrological requirements, technical requirements, inspection rules, marking, packaging, transportation and storage, and descriptions.

The corresponding experimental methods were developed.

This document applies to designs that utilize the principle of gravity to integrate a weighing hopper, material conveyor, motor, and load cell into a single, integrated force-bearing machine.

The structure uses a continuous weight output method, measuring the continuously decreasing weight value output in the material conveyor and comparing this value with a set value.

A loss-in-weight scale that aims to obtain accurate and continuous output (reduction) of weight and accumulate weighing results by approaching the control target value.

This document does not apply to electronic screw scales that use screw conveyors as carriers or constant-flow dynamic conveying systems that use belt conveyors as carriers.

Quantitative belt scale.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 191 Pictorial Symbols for Packaging and Storage

GB/T 755 Ratings and Performance of Rotating Electrical Machines

GB/T 2423.1 Environmental testing of electrical and electronic products - Part 2.Test methods - Test A. Low temperature

GB/T 2423.2 Environmental testing of electrical and electronic products - Part 2.Test methods - Test B. High temperature

GB/T 2423.3 Environmental testing - Part 2.Test methods - Test Cab. Constant damp heat test

GB/T 4167 Weights

GB/T 7551 Weighing Sensors

GB/T 7721 Continuous Accumulation Automatic Weighing Instruments (Belt Scales)

GB/T 7724 Electronic Weighing Instruments

GB/T 13384 General Technical Requirements for Packaging of Mechanical and Electrical Products

GB 14249.1 Safety requirements for electronic weighing instruments

GB/T 14250 Weighing Instrument Terminology

GB/T 17626.2 Electromagnetic compatibility testing and measurement techniques - Electrostatic discharge immunity test

GB/T 17626.3 Electromagnetic compatibility testing and measurement techniques - Part 3.Radio frequency electromagnetic field radiated immunity testing

GB/T 17626.4 Electromagnetic compatibility testing and measurement techniques - Electrical fast transient/burst immunity test

GB/T 17626.5 Electromagnetic compatibility testing and measurement techniques - Surge (impulse) immunity test

GB/T 17626.6 Electromagnetic compatibility testing and measurement techniques - Conducted disturbance immunity induced by radio frequency fields

GB/T 17626.11 Electromagnetic compatibility testing and measurement techniques - Part 11.Voltage of equipment with input current less than 16A per phase

Sag, short interruption and voltage change immunity tests

GB 19517 National Technical Specification for Safety of Electrical Equipment

GB/T 23111-2008 Non-automatic weighing instruments

GB/T 26389 Method for Compiling Model Numbers of Weighing Instruments

QB/T 1588.1 General Technical Requirements for Welded Components of Light Industrial Machinery

QB/T 1588.2 General Technical Conditions for Machining Parts of Light Industrial Machinery

GB/T 21296.3 | GB/T 21296.4 | GB/T 21296.5 | GB 14249 | GB/T 15561 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 26 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 46398

Edition	Title	Revision	Status
GB/T 46398-2025	Loss in weight feeder	current edition	Current

This page sells the current edition, GB/T 46398-2025. Earlier editions are listed for reference only.

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