Tunnel Visibility and Present Weather Sensor – VPF-750

The VPF-750 Visibility and Present Weather Sensor is a flagship forward-scatter sensor designed for highly accurate measurement of visibility (MOR), extinction coefficient (EXCO), present weather, precipitation type, and past weather conditions in aviation, tunnels, highways, and meteorological observation systems. It is widely used in Runway Visual Range (RVR) systems, airport weather stations, tunnel safety systems, and national meteorological networks where precise visibility monitoring is critical for operational safety. The sensor measures visibility from 10 meters to 99.99 km, meeting ICAO and WMO requirements for aviation and professional weather monitoring. Using advanced forward scatter technology with an additional exclusive backscatter receiver, the VPF-750 accurately distinguishes between liquid and frozen precipitation, including freezing rain and snow, even in challenging weather conditions. It supports up to 50 WMO Table 4680 present weather codes and 45 METAR weather codes, providing a complete weather reporting solution in a single rugged sensor. Its hard-coat anodized aluminum enclosure, automatic window contamination monitoring, and optional hood heaters ensure reliable long-term operation in harsh environments such as offshore platforms, tunnels, and major airports.