Lufft WS502 Multi-Parameter Weather Sensor
Features
- Integrated pyranometer for solar radiation measurements
- Easily mounts to 2" diameter pipe with integrated bracket mount & U-bolts
- SDI-12 output for integration with NexSens and other data loggers
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
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. The Lufft WS502 Multi-Parameter Weather Sensor simultaneously measures air temperature, humidity, pressure, solar radiation & wind with an integrated electronic compass for corrected wind direction on moving platforms.
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.
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.
- 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
- Technical Data
- Interface: SDI-12, Modbus
- Operating Temperature: -50 to +60 C
- Operating Humidity: 0 to 100% RH
- Included Cable Length: 10m
- (1) WS502 Multi-Parameter Weather Sensor
- (1) 10m sensor cable
- (1) Operations manual
Select Options
In The News
Delaware Environmental Observing System detects rare tornado in state
A University of Delaware monitoring network picked up a tornado that touched down in Newark on June 10, according to a release. Tornadoes are rare in the state, but sensors were there to capture it. The Delaware Environmental Observing System, which supplies data to the National Weather Service, charted the tornado with winds of 65 to 85 mph. The observing system also measured the heavy rain that accompanied the tornado. Experts say a low-pressure system and cold front in the Ohio Valley met with warm air in Delaware, which set off the churning clouds that ultimately generated the tornado. The tornado was picked up by a weather station nearly a half mile away, which measured wind speeds at 20 mph.
Read More
USGS weather station network monitors Arctic Alaska's climate
When the U.S. Geological Survey began building their climate and permafrost monitoring network in Arctic Alaska in 1998, there wasn't much precedent for how to build the infrastructure for the instruments in the region's unforgiving environment. That meant the scientists had to learn the particulars on the fly. For example: On the great expanse of flat, barren tundra, a weather station sticks out like a sore thumb to a curious grizzly bear. "The initial stations were pretty fragile," said Frank Urban, a geologist with the USGS Geosciences and Environmental Change Science Center. "So the bear and those stations--the bear won every single time without any problem.
Read More
Applied Research and Innovative Solutions: Creating CHNGES at Western Kentucky University
Long-standing environmental monitoring programs have the power to support a large number of research initiatives and policy changes—however, actually starting these networks can prove challenging. Not only is starting the program difficult, but keeping things operational for decades to come has also been challenging for environmental professionals hoping to make an impact with applied research. Jason Polk, Professor of Environmental Geoscience and Director of the Center for Human GeoEnvironmental Studies (CHNGES) at Western Kentucky University, is all too familiar with this process.
Read More
