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USH-8 Ultrasonic snow depth sensor

The robust design of the USH-8 makes it ideal for the reliable measurement of snow-depth in extreme conditions. It is used by the central weather services all over Europe as well as by the avalanche warning services in high mountain regions. The ultrasonic membrane incorporated into the USH-8 stands out due to its long service life.

The additional air-temperature detection feature permits precise measurement of snow-depth over a wide temperature range.

The powerful ultrasonic impulses emitted by this snowdepth sensor deliver reliable readings even when there is a difficult reflection ratio, as is the case with powdery or fresh snow.

The sensor is characterized by its high level of operating reliability, low energy consumption and ease of use in the field. The operating parameters and adjustment settings of the USH-8 are controlled simply and easily via a standard terminal program installed on a PC or laptop computer.

 

Technische Daten

Measurement range – Snow depthMeasurement range: 0 to 8 m; resolution: 1 mm; accuracy: 0.1 % (FS)
Measurement principle / sensor: ultrasonic (frequency 50 kHz; beamwidth 12°)

Measurement range – TemperatureMeasurement range: -35 °C to +60 °C; resolution: 0.1 °C; non-linearity: ≤0.15 %
Measurement principle / sensor: semiconductor (external sensor in air-cooled radiation shield)
Interface – AnalogDistance / snow level
Signal: 0/4 to 20 mA (configurable); resolution: 12 bit; max. load 100 Ω
Interface – DigitalDistance / snow level and air temperature
Interface: RS 232; data transmission rate: 1.2 to 19.2 kBd
Protocol: various ASCII protocols
Power supplyVersorgungsspannung: 10,5..15 VDC
Stromaufnahme:
max. 200 mA (Messphase, ca. 3 Sekunden)
5 mA (Stand by)
Energieverbrauch:
0,5 Ah / Tag (bei Messintervall 1 min)
Range of applicationOperating temperature: -35 °C to +60 °C
Protection ratingIP66
InstallationMast-mounting device for 61 mm (2 “) pipe

further informations

Features and characteristics

  • Hard-wearing, highly robust measuring head
  • Precise measurement thanks to integrated temperature compensation
  • No icing of ultrsonic sensor
  • Analog and digital interface ensures universal application
  • Intelligent processing of measurement readings for compensation and filtering of effects of the weather
  • Watertight design for outdoor use in the open air

Snow pillow

Measurement of Snow Water Equivalent (SWE) in combination with USH-8 to determine the snow density. Messung des Schneewasseräquivalent (SWE) und in Kombination mit dem USH-8 auch die Schneedichte ermittelbar.


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