The Lufft WS100 is our rain sensor with radar technology and adjustable heating. Using a 24-GHz Doppler radar, it measures the speed of all forms of condensed water. These include rain, freezing rain, hail, snow and sleet.
The low-energy sensor detects precipitation from the first drop. Its possible uses are nearly unlimited. Whether in hydrology and water management, agricultural and environmental science, building automation, meteorology or airport and traffic control: the rain gauge measures rain almost anywhere in the world.
- Rain/precipitation quantity, rain/precipitation type (Rain, snow, sleet, freezing rain, hail)
- 24GHz Doppler radar
- Very fast response time, maintenance-free measurement, present weather detection
- RS-485 semi-duplex two-wire, SDI-12, pulse interface / UMB protocol, Modbus
Absolutely maintenance-free and low-energy 24-hour operation
General Dimensions Ø150 mm (5.9 in), height: 190 mm (7.48 in) Weight ~0.6 kg Electrical parameters Power supply 10…28 VDC Power consumption without heating 1 VA / 0.4 VA (low power mode) Heating power 9 VA Operating parameters Operat. temp. range -40…60°C Operat. humidity range 0…100 % Protection class IP66 Survival wind speed 75 m/s Data transfer Interfaces/ protocols RS-485 semi-duplex two-wire, SDI-12, pulse interface / UMB protocol, Modbus (Pluggable) cable length 10 m Transmission frequency 24 GHz Precipitation Measurement surface 9 cm² Precipitation types Rain, snow, sleet, freezing rain, hail; No precipitation (SYNOP 4677) Principle Doppler radar Accuracy ±10 %* *) Under laboratory conditions by means of Lufft test system: Reference drop simulator with 2.8 mm drop diameter and adjustable intensity between 10 and 200 mm/h. Resolution liquid precipitation 0.01 / 0 .1 / 0.2 / 0.5 / 1.0 mm (pulse interface) Measurement ranges Droplet size 0.3…5.0 mm DSD 11 drop size classes with bandwidth of 0.5 mm Precipitation intensity 0.01…200 mm/h / 0…7.874 inch/h Particle velocity 0.9…15.5 m/s Solid precipitation 5.1…~30 mm