GB 14249.1-1993 Safety requirements for electronic weighing instruments

GB/T 14249.2-1993 General specification for electronic weighing instruments

GB 3836.11-1991 Electrical apparatus for explosive atmospheres-Method of test for ascertainment of maximum experimental safe gap GB/T 3836.11-2008 Explosive atmospheres—Part 11:Equipment protection by flameproof enclosures “d”—Method of test for ascertainment of maximum experimental safe gap GB/T 3836.11-2017 Explosive atmospheres—Part 11:Material characteristics for gas and vapour classification—Test methods and data GB/T 3836.11-2022 Explosive atmospheres—Part 11:Material characteristics for gas and vapour classification—Test methods and data GB 3836.12-1991 Electrical apparatus for explosive atmospheres—Classification of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents GB/T 3836.12-2008 Explosive atmospheres—Part 12:Classification of mixtures of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting current GB/T 3836.12-2019 Explosive atmospheres—Part 12:Material characteristics for combustible dusts—Test methods GB 3836.13-1997 Electrical apparatus for explosive gas atmospheres—Part 13:Repair and overhaul for apparatus used in explosive gas atmospheres GB 3836.13-2013 Explosive atmospheres—Part 13:Equipment repair,overhaul and reclamation GB/T 3836.13-2021 Explosive atmospheres—Part 13:Equipment repair,overhaul,reclamation and modification GB 3836.14-2000 Electrical apparatus for explosive gas atmospheres—Part 14:Classification of hazardous areas GB 3836.14-2014 Explosive atmospheres—Part 14:Classification of areas—Explosive gas atmosphere GB 3836.15-2000 Electrical apparatus for explosive gas atmospheres—Part 15:Electrical installations in hazardous areas (other than mines) GB/T 3836.15-2017 Explosive atmospheres—Part 15:Electrical installations design,selection and erection GB 3836.15-2024 Explosive atmospheres—Part 15:Specification of electrical installations design,selection and erection GB 3836.16-2006 Electrical apparatus for explosive gas atmospheres—Part 16:Inspection and maintenance of electrical installation(other than mines) GB/T 3836.16-2017 Explosive atmospheres—Part 16:Electrical installations inspection and maintenance GB/T 3836.16-2022 Explosive atmospheres—Part 16:Electrical installations inspection and maintenance GB 3836.16-2024 Explosive atmospheres—Part 16:Specification of electrical installations inspection and maintenance GB 3836.17-2007 Electrical apparatus for explosive gas atmosphere—Part 17:Construction and use of rooms or buildings protected by pressurization GB/T 3836.17-2019 Explosive atmospheres—Part 17:Equipment protection by pressurized room “p” and artifically ventilated room “v” GB 3836.18-2010 Explosive atmospheres—Part 18:Intrinsically safe system GB/T 3836.18-2017 Explosive atmospheres—Part 18:Intrinsically safe electrical systems GB/T 3836.18-2024 Explosive atmospheres—Part 18:Intrinsically safe electrical systems GB 3836.19-2010 Explosive atmospheres—Part 19:Fieldbus intrinsically safe concept(FISCO) GB 3836.20-2010 Explosive atmospheres—Part 20:Equipment with equipment protection level (EPL) Ga GB/T 3836.21-2017 Explosive atmospheres—Part 21:Application of quality systems for equipment manufacture GB/T 3836.21-2022 Explosive atmospheres—Part 21:Application of quality management systemsfor Ex Product manufacture GB/T 3836.22-2017 Explosive atmospheres—Part 22:Protection of equipment and transmission system using optical radiation GB/T 3836.22-2023 Explosive atmospheres—Part 22:Protection of equipment and transmission system using optical radiation GB/T 3836.23-2017 Explosive atmospheres—Part 23:Group Ⅰ,category EPL Maequipment intended to remain functionalin atmospheres endangered by firedamp and/or coal dust GB/T 3836.24-2017 Explosive atmospheres—Part 24:Equipment protection by special protection“s” GB/T 3836.25-2019 Explosive atmospheres—Part 25:Requirements for process sealing between flammable process fluids and electrical systems GB/T 3836.26-2019 Explosive atmospheres—Part 26:Electrostatic hazards—Guidance GB/T 3836.27-2019 Explosive atmospheres—Part 27:Electrostatic hazards—Test GB/T 3836.28-2021 Explosive atmospheres—Part 28:Non-electrical equipment for explosive atmospheres—Basic method and requirements GB/T 3836.29-2021 Explosive atmospheres—Part 29:Non-electrical equipment for explosive atmospheres—Constructional safety “c”,control of ignition source “b”, liquid immersion “k” GB/T 3836.30-2021 Explosive atmospheres—Part 30:Equipment and components in explosive atmospheres in underground mines GB/T 3836.31-2021 Explosive atmospheres—Part 31:Equipment dust ignition protection by enclosure “t” GB/T 3836.32-2021 Explosive atmospheres—Part 32:Intrinsically safe systems with electronically controlled spark duration limitation GB/T 3836.33-2021 Explosive atmospheres—Part 33:Equipment in adverse service conditions GB/T 3836.34-2021 Explosive atmospheres—Part 34:Equipment assemblies GB/T 3836.35-2021 Explosive atmospheres—Part 35:Classification of areas for explosive dust atmospheres GB/T 3836.36-2022 Explosive atmospheres—Part 36:Electrical safety devices for the control of potential ignition sources from Ex Equipment GB/Z 3836.37-2025 Explosive atmospheres—Part 37:Equipment protection by 2-wire intrinsically safe ethernet concept (2-WISE) GB 4793-2024 Safety technical specification for electrical equipment for measurement,control and laboratory use GB 4793.1-1995 Safety requirements for electrical equipment for measurement, control, and laboratory use Part 1:General requirements GB 4793.1-2007 Safety requirements for electrical equipment for measurement, control, and laboratory use—Part 1:General requirements GB 4793.2-2001 Safety requirements for electrical equipment for measurement, control and laboratory use—Particular requirements for hand-held current clamp for electrical measurement and test GB 4793.2-2008 Safety requirements for electrical equipment for measurement,control,and laboratory use—Part 2:Particular requirements for hand-held and hand-manipulated current sensors for electrical test and measurement GB 4793.3-2001 Safety requirements for electrical equipment for measurement, control and laboratory use—Particular requirements for laboratory equipment for mixing and stirring GB 4793.3-2008 Safety requirements for electrical equipment for measurement,control,and laboratory use—Part 3:Particular requirements for laboratory equipment for mixing and stirring GB 4793.4-2001 Safety requirements for electrical equipment for measurement, control and laboratory use—Particular requirements for autoclaves using steam for the treatment of medical materials and for laboratory process GB 4793.4-2019 Safety requirements for electrical equipment for measurement,control and laboratory use—Part 4:Particular requirements for sterilizers and washer-disinfectors used to treat medical materials GB 4793.5-2001 Safety requirements for electrical equipment for measurement, control and laboratory use—Particular requirements for hand-held probe assemblies for electrical measurement and test GB 4793.5-2008 Safety requirements for electrical equipment for measurement,control,and laboratory use—Part 5:Safety requirements for hand-held probe assemblies for electrical measurement and test GB 4793.6-2001 Safety requirements for electrical equipment for measurement, control and laboratory use—Particular requirements for laboratory equipment for the heating of materials GB 4793.6-2008 Safety requirements for electrical equipment for measurement,control,and laboratory use—Part 6:Particular requirements for laboratory equipment for the heating of materials GB 4793.7-2001 Safety requirements for electrical equipment for measurement, control and laboratory use—Particular requirements for laboratory centrifuges GB 4793.7-2008 Safety requirements for electrical equipment for measurement,control,and laboratory use—Part 7:Particular requirements for laboratory centrifuges GB 4793.8-2008 Safety requirements for electrical equipment for measurement, control, and laboratory use—Part 2-042:Particular requirements for autoclaves and sterilizers using toxic gas for the treatment of medical materials, and for laboratory processes GB 4793.9-2013 Safety requirements for electrical equipment for measurement,control and laboratory use—Part 9:Particular requirements for automatic and semi-automatic laboratory equipment for analysis and other purposes GB/T 5465.2-1996 Graphical symbols for use on electrical equipment GB/T 5465.2-2008 Graphical symbols for use on electrical equipment—Part 2:Graphical symbols GB/T 5465.2-2023 Graphical symbols for use on electrical equipment—Part 2:Graphical symbols GB/T 6587.4-1986 Vibration tests for electronic measuring instruments GB/T 6587.5-1986 Shock tests for electronic measuring instruments GB/T 6587.7-1986 Basic safety tests for electronic measuring instruments 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 8898-2001 Audio, video and similar electronic apparatus—Safety requirements GB 8898-2011 Audio,video and similar electronic apparatus—Safety requirements GB J65 GB/T 14250-1993 Terminology of weighing instrument GB/T 14250-2008 Terminology of weighing instruments