NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN EN 50054 ; VDE 0400-1:1993-07 [Withdrawn] references following documents:
Document number | Edition | Title |
---|---|---|
EN 50056 | 1991-06 | Electrical apparatus for the detection and measurement of combustible gases; performance requirements for group I apparatus indicating up to 100 % (v/v) methane More |
EN 50057 | 1991-06 | Electrical apparatus for the detection and measurement of combustible gases; performance requirements for group II apparatus indicating up to 100 % lower explosive limit More |
EN 50058 | 1991-06 | Electrical apparatus for the detection and measurement of combustible gases; performance requirements for group II apparatus indicating up to 100 % (v/v) gas More |
ISO 4003 | 1977-02 | Permeable sintered metal materials; Determination of bubble test pore size More |