This European Standard specifies assumed working life requirements and is also intended to assist suppliers in its prediction.
It is to be used only for devices manufactured from materials covered by standards which allow prediction of working life (see annex B). Materials excepted are those which do not affect the non acoustic performance of the device required by EN 1794 parts 1 and 2.
Standards of construction and any material tests conducted should provide evidence of resistance to specified conditions selected from the following:
I. Chemical Agents Location
dependent
II. De-icing salt Location/climate
Dependent
III. Dirty water/dust Location/
Climate
dependent
IV. Dew Climate
dependent
V. Freeze/thaw Climate
dependent
VI. Cold Climate
dependent
VII. Heat Climate
dependent
VIII. UV Radiation Climate
dependent
IX. Traffic Vibration Location
dependent
X. Biological Process Climate
dependent
XI. Ozone Location
dependent
XII. Water Climate
dependent
XIII. Water spray Location
Wet/dry dependent