DIN EN 61143-1/A1:1998 Electrical measuring instruments - X-t recorders - Part 1: Definitions and requirements; Amendment A1 (IEC 61143-1:1992/A1:1997); German version EN 61143-1:1994/A1:1997
1998DIN EN 61143-1/A1:1998-12 Electrical measuring instruments - X-t recorders - Part 1: Definitions and requirements; Amendment A1 (IEC 61143-1:1992/A1:1997); German version EN 61143-1:1994/A1:1997
1998DIN EN 61143-1/A1:1998 Electrical measuring instruments - X-t recorders - Part 1: Definitions and requirements; Amendment A1 (IEC 61143-1:1992/A1:1997); German version EN 61143-1:1994/A1:1997
1995DIN EN 61143-1:1995-01 Electrical measuring instruments - X-t recorders - Part 1: Definitions and requirements (IEC 61143-1:1992); German version EN 61143-1:1994