1 What is the USH-9?
Continuous snow depth and water-level measurements are very important in avalanche risk forecast
and water resource management .
The USH-9 is a continuous measurement device for the contact-free determination of snow depth
and water level. It measures the transit time of an ultrasonic signal between a variable surface and
the USH-9 sensor, and translates it to a snow or water level. An integrated processor compensates
the detected signal for temperature and filters interfering reflections of precipitation within the meas-
urement path.
The USH-9 sensor contains an additional feature to sense precipitation and to discriminate snow
from rain. This offers the option to detect the settling of snow, used for example in road weather
monitoring systems.
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Manual
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