GB/T 20920-2007 Electronic level meter

GB/T 2423.3-1993 Basic environmental testing procedures for electric and electronic products—Test Ca:Damp heat, steady state GB/T 2423.22-2002 Environmental testing for electric and electronic products—Part 2:Test methods Test N:Change of temperature GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 17626.2-1998 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test GB/T 17626.3-1998 Electromagnetic compatibility—Testing and measurement techniques-Radiated, radio-frequency, electromagnetic field immunity test GB/T 17163-1997 Glossary of terms used in dimensional measuring instruments—General terms GB/T 17163-2008 Glossary of terms used in dimensional measuring instruments—General terms GB/T 17163-2022 Glossary of terms for dimensional measuring instruments—General terms GB/T 17164-1997 Glossary of terms used in dimensional measuring instruments—Product terms GB/T 17164-2008 Glossary of terms used in dimensional measuring instruments—Product terms GB/T 17164-2022 Glossary of terms for dimensional measuring instruments—Product terms