This European Standard specifies the scale numbers and transmittance requirements for filters for protection
against infrared radiation.
The other applicable requirements for these types of filters and the frames/mountings to which they are intended to
be fitted are given in EN 166.
Guidance on the selection and use of these filters is given in annex B.
NOTE The protective filters specified in this standard are not suitable for the direct or indirect observation of an electric arc.
For this purpose a welding filter appropriate to the source being observed should by used.
Festgelegt sind Schutzstufen und Transmissionsanforderungen für Infrarotschutzfilter. Weitere geltende Anforderungen für die Filterarten werden in EN 166:1995 angegeben. In einem Anhang ist ein Leitfaden für die Auswahl und Anwendung dieser Filter enthalten.