Manual
LCom
Page 109 of 158
Snow/Rain is differentiated depending on the precipitation sensor encoding:
Opus200:
0…9 no precipitation
10..19 rain
20..60 snow
UMB:
0.. 60 no precipitation
60..66 rain
67..90 snow
TLS:
0 : no precipitation
1..39 unknown
40..69 rain
70..79 snow
If precipitation intensity is available as input sensor as well, and the precipitation type
reported is “no precipitation” or “unknown”; the intensity value is used to “detect rain”,
i.e. if the precipitation intensity is greater than 0, rainfall is assumed.
5.13.3.2
Rules for calculating the Boschung Alarm Code (Model Version 2):
Alarm 1:
Is set if
(AIR-TEMPERATURE or ROAD-TEMPERATURE below 0 ) AND (WATERFILM
greater than <waterfilm wet limit parameter = 0>)
i.e. if air or road temperature are below 0 °C and there is a waterfilm on the road
