►
Intensity since last retrieval (SDI-12)
The di
ff
erence in the amount of precipitation since the last retrieval is divided by the time since the last
retrieval. If the time is smaller than 30 s, the
RAINE-HYDRO
will use the “intensity within the last minute”
value.
►
Amount since last retrieval (SDI-12)
The
difference
in the amount of precipitation between the current and the last retrieval.
►
Minimum intensity within the last x minutes (SDI-12)
Every minute the value of the intensity within the last minute is compared to the current minimum value. If
the new value is smaller, it replaces the former minimum value.
►
Maximum intensity within the last x minutes (SDI-12)
Every minute the value of the intensity within the last minute is compared to the current maximum value. If
the new value is bigger, it replaces the former maximum value.
►
Average intensity within the last x minutes (SDI-12)
Counts the amount of precipitation in steps of 0.01 mm for x minutes and divides the result by x minutes.
►
Variance (SDI-12)
Variance of measured values over 4 s
The two pulse outputs can be configured to return the amount of precipitation with resolutions between
0.01 and 1 mm and closing times between 10 and 500 ms.
6
Installation
6.1 Site
Selection
To minimise the entry of splash water it is recommended that sites with hard ground like concrete are avoided.
Place the precipitation sensor on grass or other soft ground instead. In general the sensor should not be placed
on slopes or roofs. We recommend installation of the precipitation sensor at a distance of at least 2 m from any
o
bstacle or the obstacle height (above the gauge's ori
fi
ce),
and preferably at a distance of four times the
obstacle height.
Vegetation around the site ha
s
to be clipped regularly to the height of the sensor to prevent
it
from disturbing the measurement and at the same time reduce wind
influence
.
6
SDI-RAINE-HYDRO
USER MANUAL
700-SDI-RAINE-HYDRO Rev1 03 Mar 2021
Part# 21184
