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8380.U01

Lufft WS700 Multi-Parameter Weather Sensor

Lufft WS700 Multi-Parameter Weather Sensor

Description

The Lufft WS700 Multi-Parameter Weather Sensor simultaneously measures air temperature, humidity, pressure, precipitation, solar radiation & wind with an integrated electronic compass.

Features

  • Integrates both Doppler precipitation and silicon pyranometer on top of sensor
  • Easily mounts to 2" diameter pipe with integrated bracket mount & U-bolts
  • SDI-12 output for integration with NexSens and other data loggers
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Details

Overview
The Lufft family of multi-parameter weather sensors offer a cost-effective, compact alternative for the acquisition of a variety of measurement parameters on land- and buoy-based weather stations. Depending on the model, each sensor will measure a different combination of weather parameters to meet a wide variety of applications.

Air Temperature & Humidity
Temperature is measured using a highly accurate NTC-resistor, while humidity is measured using a capacitive humidity sensor. Both sensors are located in a ventilated radiation shield to reduce the effects of solar radiation.

Pressure
Absolute air pressure is measured using a built-in MEMS sensor. The relative air pressure referenced to sea level is calculated using the barometric formula with the aid of the local altitude, which is user-configurable on the equipment.

Wind Speed & Direction
The wind sensor uses four ultrasound sensors which take cyclical measurements in all directions. The resulting wind speed and direction are calculated from the measured run-time sound differential.

Compass
The integrated electronic compass can be used to check the north-south adjustment of the sensor housing for wind direction measurement. It is also used to calculate the compass-corrected wind direction.

Precipitation
Tried and tested radar technology is used to measure precipitation. The precipitation sensor works with a 24GHz Doppler radar, which measures the drop speed and calculates precipitation quantity and type by correlating drop size and speed.

Solar Radiation

The pyranometer is intended for shortwave global solar radiation measurements in the spectral range from 300 to 1100nm. The thermopile sensor construction measures the solar energy that is received from the total solar spectrum and the whole hemisphere. The output is expressed in Watts per square meter.

Notable Specifications:
  • Air Temperature
  • Principle: NTC
  • Measuring Range: -50 to +60 C
  • Resolution: 0.1 C (-20 to +50 C); otherwise 0.2 C
  • Accuracy: +/-0.2 C (-20 to +50 C); otherwise +/-0.5 C
  • Units: C; F
  • Humidity
  • Principle: Capacitive
  • Measuring Range: 0 to 100% RH
  • Resolution: 0.1% RH
  • Accuracy: +/-2% RH
  • Units: % RH; g/m3; g/kg
  • Pressure
  • Principle: Capacitive
  • Measuring Range: 300 to 1200hPa
  • Resolution: 0.1hPa
  • Accuracy: +/-1.5hPa
  • Unit: hPa
  • Radiation
  • Response Time (95%): <1s
  • Spectral Range: 300 to 1100 nm
  • Measuring Range: 1400 W/m2
  • Wind Speed
  • Principle: Ultrasonic
  • Measuring Range: 0 to 60m/s
  • Resolution: 0.1m/s
  • Accuracy: +/-0.3m/s or 3% (0 to 35m/s); +/-5% (>35m/s)
  • Response Threshold: 0.3m/s
  • Units: m/s; km/h; mph; kts
  • Wind Direction
  • Principle: Ultrasonic
  • Measuring Range: 0 to 359.9 degrees
  • Resolution: 0.1 degrees
  • Accuracy: +/-3 degrees
  • Response Threshold: 0.3m/s
  • Compass
  • Principle: Integrated Electronic Compass
  • Measuring Range: 0 to 359.9 degrees
  • Resolution: 1.0 degree
  • Precipitation
  • Principle: Radar
  • Measuring Range: 0.3mm to 5.0mm
  • Liquid Precipitation Resolution: 0.01mm
  • Precipitation Types: Rain, Snow
  • Repeatability: Typically> 90%
  • Response Threshold: 0.01mm
  • Technical Data
  • Interface: SDI-12, Modbus
  • Operating Temperature: -50 to +60 C
  • Operating Humidity: 0 to 100% RH
  • Included Cable Length: 10m
What's Included:
  • (1) WS700 Multi-Parameter Weather Sensor
  • (1) 10m sensor cable
  • (1) Operations manual
Image Part # Product Description Price Stock Order
Lufft WS700 Multi-Parameter Weather Sensor 8380.U01 WS700 multi-parameter weather sensor, air temperature, humidity, pressure, precipitation, solar radiation & wind, 10m cable Usually ships in 1-2 weeks
Image Part # Product Description Price Stock Order
Lufft WT1 Surface Temperature Sensor 8160.WT1 WT1 surface temperature sensor, 10m cable Usually ships in 1-2 weeks
Lufft WS-Series Sensor Interface Cables 8370.UKAB20 Sensor interface cable, 20m Usually ships in 1-2 weeks
Lufft WS-Series Sensor Interface Cables 8370.UKAB35 Sensor interface cable, 35m Usually ships in 1-2 weeks
Lufft WS-Series Sensor Interface Cables 8370.UKAB50 Sensor interface cable, 50m Usually ships in 1-2 weeks
Lufft WS-Series Sensor Interface Cables 8370.UKAB100 Sensor interface cable, 100m Usually ships in 1-2 weeks
Lufft 24V/2.5A Power Supply 8366.USV4 Power supply, 24V/2.5A Usually ships in 1-2 weeks
Lufft Surge Protector 8379.USP Surge protector Usually ships in 1-2 weeks
Lufft RS-485 to USB Converter 8160.RS485USB 1-port RS-485 to USB converter Usually ships in 1-2 weeks
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Questions & Answers

| Ask a Question
What type of precipitation can my weather sensor measure?
The Lufft WS700 can detect rain or snow.
How accurate is the temperature sensor in my weather sensor?
The temperature accuracy is +/- 0.2 °C.

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