GB/T 28474.1-2012 Pressure/Differential-pressure transmitter for use in industrial-process measure and control systems—Part 1:General specification

GB/T 28474.2-2012 Pressure/Differential-pressure transmitter for use in industrial-process measure and control systems—Part 2:Methods of evaluating the performance

GB/T 9969.1-2008 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 1048-1990 Nominal pressure for pipe components GB/T 1048-2005 Pipework components—Definition and selection of PN GB/T 1048-2019 Pipework components—Definition and selection of nominal pressure GB/T 3369.1-2008 Analogue signals for process control systems—Part 1:Direct current signals GB/T 3369.2-2008 Analogue signals for process control systems—Part 2:Direct voltage signals GB 3836.1-2000 Electrical apparatus for explosive gas atmospheres—Part 1:General requirements GB 3836.1-2010 Explosive atmospheres—Part 1:Equipment—General requirements GB/T 3836.1-2021 Explosive atmospheres—Part 1:Equipment—General requirements GB 3836.2-2000 Electrical apparatus for explosive gas atmospheres—Part 2:Flameproof enclosure “d” GB 3836.2-2010 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures "d" GB/T 3836.2-2021 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d” GB 3836.4-2000 Electrical apparatus for explosive gas atmospheres—Part 4:Intrinsic safety“i” GB 3836.4-2010 Explosive atmospheres—Part 4:Equipment protection by intrinsic safety "i" GB/T 3836.4-2021 Explosive atmospheres—art 4:Equipment protection by intrinsic safety “i” 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 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/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 17212-1998 Industrial-process measurement and control—Terms and definitions GB/T 17614.1-1998 Transmitters for use in industrial-process control systems Part 1:Methods of evaluating the performance GB/T 17614.1-2008 Transmitters for use in industrial-process control systems—Part 1:Methods of evaluating the performance GB/T 17614.1-2015 Transmitters for use in industrial-process control systems—Part 1:Methods for performance evaluation GB/T 18271.1-2000 Process measurement and control devices—General methods and procedures for evaluating performance—Part 1:General considerations GB/T 18271.1-2017 Process measurement and control devices—General methods and procedures for evaluating performance—Part 1:General considerations GB/T 18271.3-2000 Process measurement and control devices—General methods and procedures for evaluating performance—Part 3:Tests for the effects of influence quantities GB/T 18271.3-2017 Process measurement and control devices—General methods and procedures for evaluating performance—Part 3:Tests for the effects of influence quantities GB/T 18271.4-2000 Process measurement and control devices—General methods and procedures for evaluating performance—Part 4:Evaluation report content GB/T 18271.4-2017 Process measurement and control devices—General methods and procedures for evaluating performance—Part 4:Evaluation report content