This standard specifies the measurement principles, technical requirements, applicable conditions, instrument inspection, marking, packaging, transportation and storage of aluminum and aluminum alloy liquid hydrogen detectors. This standard applies to aluminum and aluminum alloy liquid hydrogen detectors.
YS/T 685-2009 Referenced Document
JJG 617-1996 Verification Regulation of Digital Temperature Indicators and Controllers
YS/T 600-2009 Analysis method of hydrogen in liquid aluminium and aluminium alloys the method of the closed gas loop circulation
YS/T 685-2009 history
2009YS/T 685-2009 Analyser of hydrogen in liquid aluminium and aluminium alloys