EXTREMELY ROBUST AND RELIABLE ACOUSTIC RAIN SENSOR

The RHD is a low-cost, high precision and ultra-robust rain sensor. It features very low-power consumption, is maintenance-free and has a completely sealed acoustic detector with no moving parts. The sensing device is a polished stainless steel hemisphere supported by a strong stainless steel arm. It detects changes of the acoustic pressure that are induced by the impact of raindrops or hailstones. The RHD also includes a distrometer that returns the drop size distribution.

FIELDS OF APPLICATION 

With its disdrometer and hail detection functions the RHD is a valuable instrument for soil erosion forcast and precipitation monitoring in agriculture. As this sensor is maintenance free, it is also suitable for remote weather stations (on- and offshore) and scientific research.

TECHNICAL DETAILS

• Measurement principle acoustic detector
  
• Measurement area hemisphere with Ø160 mm (402 cm²)
• Accuracy of rain intensity ± 5% at 100% duty-cycle
• Disdrometer 27 size classes from ≤ 0.75 mm to ≥ 7.0 mm
• Hail detection hail stone size ≥ 0.5 cm; up to 5 hits/second
• Output RS-232, SDI-12, impuls- und voltage output, Modbus RTU (requires adapter)
• Protection IP 67
• Temperature range -30°C bis +60°C
• Dimensions 260 mm x 430 mm x 160 mm (including mounting arm)
• Mounting mast or crossbar