Description: Lowest relative humidity to which a device can be exposed without permanently restricting its operating behavior; Name: relative humidity (minimum)
Description: lowest relative humidity to which a device may be subject without permanent impairment of operating characteristics; Name: min. 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