Description: Highest relative humidity to which a device can be exposed without permanent restriction of the operating behavior; Name: relative humidity (maximum)
Description: highest relative humidity to which a device may be subject without permanent impairment of operating characteristics; Name: max. air humidity
Description: amount of the absolute value of the total head above the head, equivalent to the vapour pressure of the liquid at the particular temperature, with reference to the NPSH datum plane; Name: net positive suction head