CJ/T 434-2013 Ultrasonic water meter

GB/T 778.1-2007 Measurement of water flow in fully charged closed conduits—Meters for cold potable water and hot water—Part 1:Specifications GB/T 778.3-2007 Measurement of water flow in fully charged closed conduits—Meters for cold potable water and hot water—Part 3:Test methods and equipment GB/T 5080.7-1986 Equipment reliability testing Compliance test plans for failure rate and mean time between failures assuming constant failure rate GB/T 15479-1995 Technical requirements and test methods of insulation resistance and insulating strength for use in industrial process measurement and control instruments 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 2423.8-1995 Environmental testing for electric and electronic products—Parts 2:Test methods—Test Ed:Free fall GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB 4706.1-1998 Safety of household and similar electrical appliances Part 1:General requirements GB 4706.1-2005 Household and similar electrical appliances—Safety—Part 1:General requirements 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 26831.1-2011 Society energy metering for reading system specification—Part 1:Data exchange GB/T 26831.2-2012 Society energy metering for reading system specification—Part 2:Physical and link layer GB/T 26831.3-2012 Society energy metering for reading system specification—Part 3:Dedicated application layer GB/T 26831.4-2017 Specification for reading system of energy metering in community—Part 4:Wireless meter readout GB/T 26831.5-2017 Specification for reading system of energy metering in community—Part 5:Wireless relaying GB/T 26831.6-2015 Society energy metering for reading system specification—Part 6:Local bus GB/T 4706.1-2024 Safety of household and similar electrical appliances—Part 1:General requirements JB/T 9329-1999 Instrument transportation, basic environmental conditions for storage and transportation, and test methods GB/T 191-2025 Graphical symbols marking for handling and storage of packages