特性

• FD71 for visibility
• FD71P for visibility, present weather, and precipitation

"FD70 Series is the seventh generation of Vaisala visibility and present weather sensors. It is designed based on more than 30 years of forward scatter technology development experience. This technology innovation sets a new standard in precipitation identification, quantification, and visibility determination accuracy.FD70 Series product models:","Features  • Reports visibility up to 100 km (62 mi)  • Reports precipitation type, intensity, and accumulation  • Exceptional precipitation detection sensitivity  • Precise type identification even for low-intensity precipitation  • Superior liquid\/frozen differentiation  • Optimal forward scatter angle 42°  • Look-down geometry to minimize measurement disturbances","Key Benefits","  • Best-in-class 3-in-1 performance: visibility, present weather, and precipitation quantification   • Accurate visibility measurement with proven calibration traceability and a range of up to 100 km   • Significant enhancement of drizzle, freezing rain, hail, and ice pellet identification"