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Snow Depth Sensor USH-9

Make: Sommer                                      Model: USH-9
✅ It measures the transit time of an ultrasonic signal between a variable surface and the USH-9 sensor, and translates it to a level or distance.
✅ Measurand : Snow Depth.
✅ Sensor Type : Ultrasonic.
✅ Signal Output : RS-485 ASCII / Modbus RTU, SDI-12, 2 Analog outputs.
✅ Supplied With : Sensor cable SQ/USH-9, 10 m , Factory test/ Calibration Certificates.

Introducing the USH-9 – The Precise Snow Depth Sensor

Precision is key when it comes to measuring snow depth, and that’s where the USH-9 comes in. This ultrasonic sensor is designed for precise, continuous and non-contact recording of snow depths, making it an ideal choice for extreme weather conditions and high alpine terrain.

Features and Benefits:

  • Continuous and Non-Contact Measurement: The USH-9 measures snow depth without coming into contact with the snow pack, providing accurate results.
  • Robust Design: The sealed ceramic membrane and protective shield against ice and snow make the USH-9 a reliable choice for extreme environmental conditions.
  • High Accuracy: The USH-9 features integrated temperature compensation and filtering of snow and rainfall using intelligent spectrum analysis, ensuring a high level of accuracy.
  • Energy-Efficient Operation: The USH-9 has a sleep mode, making it ideal for solar-powered measuring stations.

Fields of Application

The USH-9 is widely used by meteorologists, avalanche warning services, ski regions, research stations, and the energy sector due to its high operational safety and reliable measurement values.


Measuring snow depth is important for evaluating the snow pack, as its development is subject to strong regional and temporal fluctuations influenced by weather conditions such as snow or rainfall, air temperature, and wind. The USH-9 measures depths of up to ten meters continuously and can transmit data remotely if needed, making it a convenient choice for remote locations.

In conclusion, the USH-9 is the solution for precise and non-invasive snow depth measurement. With its robust design, energy-efficient operation, and high accuracy, it is the ideal choice for extreme weather conditions and high alpine terrain.

Application and features of Snow Depth Sensor USH-9:



✅ Extreme weather conditions
✅ Alpine and high alpine terrain
✅ Meteorologists
✅ Avalanche warning services
✅ Ski regions
✅ Research stations
✅ The energy sector
✅ Continuous and non-contact measurement
✅ Reliable sensor for extreme environmental conditions and high alpine employment
✅ Robust, sealed and therefore maintenance free ceramic membrane with protective shield against ice and snow
✅ High level of accuracy thanks to the integrated temperature compensation and filtering of snow and rainfall using intelligent spectrum analysis
✅ Energy-saving operation through sleep modus, ideal for solar-powered measuring stations




Weight (Mass)

1.2 kg


Ø180 x 320 mm


RS-485 ASCII / Modbus RTU, SDI-12,
2 Analog outputs 4…20 mA (14 bit, max. load 250 Ω)

Power Supply

9…28 VDC; Reverse voltage protection, overvoltage protection

Power Consumption

Sleep mode: <0.4 mA,
Active measurement: typically 40 mA (max. 300 mA for 0.05 s),
Shield heating (optional): 1 A

Operating Environment

Operating temperature : -40…+60 °C (-40…+140 °F),
Storage temperature : -40…+60 °C (-40…+140 °F)

Measurement Range

0.7…10 m


1 mm


Anodized aluminium

Protection Level

IP 64

Snow Depth

Near blanking distance : 0.7 m
Accuracy : max. ± 1cm; typically 0.1% FS
Non-linearity : ≤0.15%,
Measurement duration : 2…20 s Measurement interval : 20 s…3 h Measurement principle : Ultrasonic (frequency 50 kHz)
Beam aperture : 12°


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