The Affordable WS100 is a Radar Precipitation Sensor / Smart Disdrometer Rain Gauge, 0.2mm unheated with bounce-free reed contact.

Model: 8367-U04

Absolutely maintenance-free and extremely fast measurement of precipitation type (Rain, snow, sleet, freezing rain, hail) and intensity, thanks to radar measurement technology. The smart radar rain sensor & present weather detector!

• Parameters measured: Rain/precipitation quantity, rain/precipitation type (Rain, snow, sleet, freezing rain, hail).
• Measurement technology: 24GHz Doppler radar.
  Product highlights: Very fast response time, maintenance-free measurement, present weather detection.
• Interfaces: RS-485 semi-duplex two-wire, SDI-12, pulse interface / UMB protocol, Modbus.

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.

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Technical Data

Additional Equipment

• 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, drizzle; No precipitation (SYNOP 4677)
  Principle	Doppler radar
  Accuracy	±0.16mm or ±10% of the measured value for liquid precipitation*
  	* 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 preciptiation	0.01 / 0 .1 / 0.2 / 0.5 / 1.0 mm (pulse interface)
  Measurement ranges
  Droplet size	0.3...5.0 mm
  Drop Size Distribution	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

• Accessories
  Surge protection	8379-USP
  Power supply 24V/2.5A	8366-USV4
  Power supply 24V/4A	8366-USV1
  Traverse Mounting Bracket	8367-TRAV1
  Digital-analog-converter	8160-UDAC
  Temperature Sensor WT1	8160-WT1
  Rain sensor WTB100	8353-10
  WS Cables	8370-UKAB (several lengths available)
  Tripod, Portable Tripod Mast 6 to 10 ft	ME905
  Converter Cable RS485 to USB	8160-RS485USB
  GPRS/GSM modem with Camera Port	8160-MODVIOLA
  RS232 Connection Cable	8160-KAB
  Netronix node with Thiamis ICU	RN500ICU820
  Surge Protector for night vision cameras	8379USPRJ45