GB/T 7721-2007 Replaced National standards

GB/T 7721-2007 Continuous totalizing automatic weighing instruments(electronic belt weighers)

GB/T 7721-2007 Continuous totalizing automatic weighing instruments(electronic belt weighers)

Publish Date: 2007-12-05 Implement Date: 2008-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 7721-2007

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: Mechanical measuring instruments, automatic weighing devices, and other testing instruments

ICS Name: The measurement of force, gravity, and pressure.

Publish Date: 2007-12-05

Implement Date: 2008-09-01

Pages: 96 pages

Scope

This standard specifies the terms and definitions, product models, metrological performance requirements, general technical requirements, requirements for electronic belt scales, test methods, inspection rules, and marking, packaging, transportation, and storage of continuous cumulative automatic weighing devices for belt conveyors (hereinafter referred to as "electronic belt scales"). It also stipulates the test procedures for type evaluation of electronic belt scales (see Appendix A) and the format of the type evaluation report (see Appendix B). This standard applies to electronic belt scales that use the principle of gravity to determine and accumulate the mass of bulk materials in a continuous weighing manner, and also applies to electronic belt scales used with single-speed belt conveyors or variable-speed belt conveyors.

Development Information

Word Count: 172 Thousand words Pages: 96 pages

Replace the following standards

GB/T 7721-1995 Electronic belt weighers

Superseded by the following standards

GB/T 7721-2017 Continuous totalizing automatic weighing instruments(belt weighers)

Referenced Standards

GB 14249.1-1993 Safety requirements for electronic weighing instruments GB/T 14250-1993 Terminology of weighing instrument GB/T 17626.3-2006 Electromagnetic compatibility—Testing and measurement techniques—Radiated, radio-frequency, electromagnetic field immunity test GB/T 17626.4-1998 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burst immunity test GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 2423.1-2001 Environmental testing for electric and electronic products—Part 2:—Test methods Tests A:Cold GB/T 2423.1-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Tests A:Cold GB/T 2423.2-2001 Environmental testing for electric and electronic products—Part 2:Test methods-Tests B:Dry heat GB/T 2423.2-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Tests B:Dry heat GB/T 2423.3-1993 Basic environmental testing procedures for electric and electronic products—Test Ca:Damp heat, steady state GB/T 2423.3-2006 Environmental testing for electric and electronic products—Part 2:Testing method—Test Cab:Damp heat, steady state GB/T 2423.3-2016 Environmental testing—Part 2:Testing method—Test Cab:Damp heat,steady state GB/T 2424.1-2005 Environmental testing for electric and electronic products—Guidance for high temperature and low temperature tests GB/T 2424.1-2015 Environmental testing—Part 3:Supporting documentation and guidance—Cold and dry heat tests GB/T 2424.2-1993 Basic environmental testing procedures for electric and electronic products Guidance for damp heat tests GB/T 2424.2-2005 Environment tests for electric and electronic products—Guidance for damp heat tests GB/T 7551-1997 Load cells GB/T 7551-2008 Load cells GB/T 7724-1999 Weighting indication controller GB/T 7724-2008 Electronic Weighing Meter GB/T 7724-2023 Electronic weighing indicator GB/T 13384-1992 General specifications for packagings of mechanical and electrical products GB/T 13384-2008 General specifications for packing of mechanical and electrical product GB/T 17626.2-1998 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test GB/T 17626.2-2006 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test GB/T 17626.2-2018 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test GB/T 17626.11-1999 Electromagnetic compatibility—Testing and measurement techniques—Voltage dips, short interruptions and voltage variations immunity tests GB/T 17626.11-2008 Electromagnetic compatibility—Testing and measurement techniques—Voltage dips,short interruptions and voltage variations immunity tests GB/T 17626.11-2023 Electromagnetic compatibility—Testing and measurement techniques—Part 11:Voltage dips, short interruptions and voltage variations immunity tests for equipment with input current up to 16 A per phase QB 1563-1992 QB 1563-1992 Standard for Product Model Numbering of Weighing Instruments QB/T 1563-2003 GB/T 191-2025 Graphical symbols marking for handling and storage of packages

Adopt standards

OIML R50:1997

Related Standards

GB/T 3751.1-1983 Replaced

GB/T 3751.1-1983 Connector for pressure gauge—Assembly

Publish Date: 1983-06-17

GB/T 3751.2-1983 Replaced

GB/T 3751.2-1983 Connector for pressure gauge—Boby

Publish Date: 1983-06-17

GB/T 4755-1984 Replaced

GB/T 4755-1984 Microkator

Publish Date: 1984-10-30

GB/T 777-1985 Replaced

GB/T 777-1985 Analogue pneumatic signal for industrial process measurement and control instruments

Publish Date: 1985-04-03

GB/T 5603-1985 Abolished

GB/T 5603-1985 Load cell terminology and definitions

Publish Date: 1985-11-25

GB/T 5604-1985 Abolished

GB/T 5604-1985 Load cell test procedure

Publish Date: 1985-11-25