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Profiled road markings are not homogenous considering their retroreflection
(normally the front side has a higher retroreflection value than the upper side).
Cause of that measuring of a profiled road marking means that an average value
from several measurements has to be calculated which respects all areas on and
between the profiles evenly.
The result corresponds then to the overall impression out of a driving car.
Locate the marker labelled with
„illumination field“ on the upper side of the
positioning support. The illumination field is at this place, when the instrument is
measuring from a height of 0 mm. It will shift 46 mm by increasing the measuring
height by each 1 mm.
There are markers on the side of the positioning support in a distance of 10cm
(length of the illumination field) which help to shift the instrument in steady steps
over a profiled marking. The first two markers show also the illumination area at
height of 0 mm („level 0“).
Содержание Zehntner ZRM 6010
Страница 1: ...Zehntner ZRM 6010 Retroreflectometer RL Firmware as from 2 1 0 Instruction Manual ...
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Страница 45: ...Page 45 13 Menu 13 1 Menu structure ...
Страница 66: ...Page 66 W Wet measurements 25 Wet timer 25 47 ...
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