ČSN EN 12942 - Ochranné prostředky dýchacích orgánů - Filtrační prostředky s pomocnou ventilací připojené k obličejovým maskám, polomaskám nebo čtvrtmaskám - Požadavky, zkoušení, značení

3.1.7 manufacturer's minimum design condition

lowest level of operating conditions of the device as stated by the manufacturer at which the complete RPD will still meet the requirements for the designated class

[SOURCE: EN ISO 16972:2020, definition 3.137]

Description

Each device typically consists of:

— a tight-fitting respiratory interface, e.g. a full face mask, a half mask or a quarter mask which can be combined with other types of PPE;

— a blower unit with an energy supply intended to be carried/worn by the wearer which supplies filtered ambient air to the respiratory interface. The energy supply for the blower unit can or cannot be carried on the person;

— a filter or filters through which all air supplied passes;

— one or more exhalation valves or other outlets through which exhaled air and air in excess of the wearer's demand is discharged.