7 Installation
7.1
Site selection
The selection of a suitable site is crucial to gain accurate level and snow depth data that are rep-
resentative of the monitored area. Several aspects have to be considered when choosing a site, espe-
cially for snow depth measurements:
1. The measurement spot should be representative of the monitored area. This applies to the
weather conditions as well as to the ground surface. Different surfaces, e.g. grass and gravel,
have different thermal properties and consequently influence snow accumulation and snow
melt.
2. The terrain should be flat or only be slightly sloping. There should be no troughs or hills.
3. There should be no boulders, trees, fences or other objects on and around the measurement
spot. Any obstacle can cause snow drift and thus affect the snow depth measurement.
4. The site should be exposed to wind as little as possible.
5. The site must be safe from avalanches.
6. If the measurement spot is on or near a slope any snow gliding has to be ruled out.
7.2
Things to consider for installation
The USH-9 can be mounted to a horizontal tube with the included bracket (max. tube diameter
60 mm) as shown in
Figure 3
USH-9 with mounting bracket
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