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USH-8 Ultrasonic Snow Depth Sensor

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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 as well as by the avalanche warning services. The ultrasonic membrane incorporated into the USH-8 stands out due to its long service life.

The snow depth sensor is supplied together with a mounting and a cable connector

• Hard-wearing, highly robust measuring head
• Precise measurement thanks to integrated temperature compensation
• No icing of ultrasonic sensor
• Analogue 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

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

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

The sensor is characterised 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.

SPECIFICATIONS

Snow Depth
Measurement range: 0 to 8 m; resolution: 1 mm; accuracy: 0.1 % (FS) Measurement principle / sensor: ultrasonic (Frequency 50 kHz; beam width 12°)

Temperature
Measurement 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)

Functions
Distance or depth measurement (configurable)
Interface – analogue
Distance / snow level Signal: 4 to 20 mA (configurable); resolution: 12 bit; max. load 100 Ω
Interface – digital
Distance / snow level and air temperature Interface: RS 232; data transfer rate: 1.2 to 19.2 kBd Protocol: various ASCII protocols

Supply
Supply voltage: 11 to 15 V DC Current consumption: 200 mA max. (measurement phase, approx. 3 s); 5 mA (standby) Power consumption: 0.5 Ah / day (with 1-minute measuring interval)
Lightning protection
Discharge capacity: built-in lightning protection with 0.6 kA discharge capacity
Range of application
Operating temperature: -35 °C to +60 °C

Housing
Basic dimensions: diameter: 80 mm; length: 230 mm Thermal shield dimensions: diameter: 110 mm; length: 120 mm Material: anodised aluminium, natural finish Total weight: 2 kg
Protection rating
IP 66

Installation
Mast-mounting device for 61 mm (2") pipe

ORDERING INFORMATION
206101 - USH-8 Ultrasonic Snow Depth Sensor

Accessories
8365.AUS Indeclinable arm for USH-8