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: Allocation of the devices according to deployment site and cause of the hazard. NOTE: The Group II operating media are further subdivided into explosion groups and temperature classes; Name: Explosion protection device group of the pump