This standard specifies the basic parameters, requirements, test methods, inspection rules, marking, packaging, transportation and storage of the HM4 electric ventilation psychrometer. This standard applies to the design, production, inspection and acceptance of the HM4 electric ventilation psychrometer (hereinafter referred to as the psychrometer).
QX/T 11-2002 history
2003QX/T 11-2002 HM4 Electric aspirated psychrometer