Snow drift sensor SND

EXTREMELY ROBUST SENSOR TO DETERMINE SNOW DRIFT INTENSITY

The sensing part of the instrument is a cylindrical, anti-abrasion, anti-adhesion and anti-rime coated tube supported by two strong stainless steel arms. The impact of drifting snow and the friction of laminar wind induce a change in internal acoustic pressure. The excitation by snow and wind is discriminated by a specific acoustic, mechanical and electronic design.

It features continuous or pulse analog voltage outputs and supports SDI-12 communication, serial RS-232, and Modbus RTU RS485 (using an optional adapter). The amout of snow drift is returned in g/m²/s, a simple unit to interpret how much snow has been transported onto a road or an exposed slope.

FEATURES AND ADVANTAGES

• Maintenance-free & special design to resist the highest winds, extreme temperatures, rime, sunlight, abrasion, ashes and even temporary submersion.
• Lightweight, corrosion free, UV/Ozone stable, non-obstructable. Resistant to shock, vibration, lightning, corrosion, humidity, animals, insects and splashes. Operating temperature from −40 °C to 80 °C (−50 °C to 100 °C extended).
• Very low power consumption: 2.1 mA continuous for nominal operation (10% duty-cycle) or 21 mA for continuous operation.
• Adaptable to any structure thanks to a range of high standard stainless steel clamping accessories.
• Directly connect the sensor to your central unit or configure any analog or digital communication through the included USB dongle.
• Compatible with almost any external analog or digital central unit, with a very long extension cable (typ. up to 200 m), with IoT (LPWAN) transceivers and industrial control systems (BMS, SCADA, etc.).

FIELDS OF APPLICATION

• Monitoring of snowdrift
• particles mass flux and wind-speed measurements
• Meteorological and scientific applications
• Road security and avalanche danger
• Industrial surveillance applications

TECHNICAL DETAILS

• Range particle flux 0 to 250 g/m²/s (0 to 2.5 V, or 0 to 5 V)
• Range wind speed 0 to 250 km/h (0 to 2.5 V, or 0 to 5 V)
• Measurement principle Acoustic pressure
• Temperature range -40°C to +80°C (-40°F to +176°F)
• Analog interface  0 to 2.5 V, or 0 to 5 V
• Digital SDI-12, RS-232 TTL
• Power supply 6 to 30 VDC
• Power consumption <1 mA in stand-by and 20 mA in acquisition mode
• Proteciton IP67