Snowfall Sensors

No field calibration is required. OSI's all-digital DSP-based design with patented environmentally adaptive algorithms automatically compensates for dust, ice, and water on lenses. With no moving parts and self-regulating dual lens heaters, the sensors operate maintenance-free with MTBF exceeding 80,000 hours and no scheduled cleaning needed.

Yes. The LP-WIVIS (OWI-650) is specifically designed for battery or solar-powered installations in remote locations. Its low-power, intermittent-mode operation makes it ideal for unattended weather stations, data buoys, military field deployments, and off-grid highway monitoring sites where AC power is unavailable.

OSI's APG and DSP-WIVIS sensors measure snow rates from 0.03 mm/hr up to 500 mm/hr with 5% accumulation accuracy and 0.001 mm resolution. The optical scintillation design eliminates evaporation errors common to mechanical gauges, ensuring reliable data across light flurries to heavy blizzard conditions.

Yes. OSI's OWI-430-RH and DSP-WIVIS sensors are FAA AWOS present weather requirement compliant and NWS/WMO weather code standard compliant. The MAWOS station is also available in an FAA-certified AWOS-AV configuration, making OSI sensors a trusted choice for airports, helipads, and aviation weather monitoring worldwide.

OSI snowfall sensors support RS-232 (standard), RS-485, Ethernet, MODBUS RTU, and optional cellular modem interfaces. Data is updated once per minute with instantaneous intensity readings every 10 seconds. This flexibility ensures seamless integration with AWOS systems, RWIS networks, SCADA platforms, and third-party data acquisition systems.

OSI sensors operate from -50°C to +60°C (-58°F to +140°F), covering every climate from Antarctica to tropical rainforests. Self-regulating dual lens heaters prevent ice and snow accumulation on optics, ensuring reliable year-round operation in the harshest cold-weather environments without human intervention.