Lufft WS401 Multi-Parameter Weather Sensor
Features
- Integrated tipping bucket allows a 0.2mm or a 0.5mm resolution of rainfall
- 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
| Image | Part# | Product Description | Price | Stock | Order | |
|---|---|---|---|---|---|---|
 | 8377.U01 | WS401 multi-parameter weather sensor, air temperature, humidity, pressure & precipitation, 10m cable | $1,558.15 | Check Availability | ||
| Image | Part# | Product Description | Price | Stock | Order | |
|---|---|---|---|---|---|---|
 | 8160.WT1 | WT1 surface temperature sensor, 10m cable | $366.13 | Check Availability | ||
 | 8370.UKAB20 | Sensor interface cable, 20m | $213.58 | 2 Available | ||
 | 8370.UKAB100 | Sensor interface cable, 100m | $553.56 | 2 Available | ||
 | 8379.USP | Surge protector | $359.66 | Check Availability | ||
 | 8366.USV2 | Power supply, 24V/10A | $505.73 | Check Availability | ||
 | 8160.UISO | ISOCON interface converter | $612.40 | Check Availability | ||
 | 8160.UANA | ANACON analog/digital converter | $621.93 | Check Availability | ||
 | 8367.TRAV1 | Sensor traverse mounting for 40-80mm diameter pipes, all WS-Series models | $239.73 | 3 Available | ||
Overview
The Lufft WS401 Multi-Parameter Weather Sensor offers 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.
Precipitation
Precipitation is measured using an integrated tipping bucket rain gauge. The flexible tipping bucket can be configured for 0.2mm or 0.5mm rainfall resolution.
- 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
- Precipitation
- Principle: Tipping Bucket
- Liquid Precipitation Resolution: 0.2mm/0.5mm
- Precipitation Types: Rain, Snow
- Accuracy: +/-2%
- Technical Data
- Interface: SDI-12, Modbus
- Operating Temperature: -50 to +60 C
- Operating Humidity: 0 to 100% RH
- Included Cable Length: 10m
- (1) WS401 Multi-Parameter Weather Sensor
- (1) 10m sensor cable
- (1) Operations manual
The resolution is configurable to tip on either 0.2mm or 0.5mm. The sensor is supplied with a reduction ring that mounts on the funnel to reduce the area.
In The News
Lufft WS-Series Weather Stations: A history of weather monitoring translates to high quality weather sensing options
Gotthilf Lufft started building mechanical weather sensors in 1881. “They really began by measuring temperature and humidity in the most basic sense,” said Ann Pattison, Lufft USA product manager. More than 130 years later, the company is still building weather monitoring technology. For their most recent rendition of weather stations, Lufft engineers traded mechanical dials and horse hair for ultrasonic transducers and pyrometers to create a line of electronic all-in-one weather stations called the WS-Series. The systems have a modular formula that can be tailored to customer’s applications. In fact, many of the ready-made combinations Lufft offers, like a weather station with built-in tipping bucket rain gauge, were inspired by customers.
Read More
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.
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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.
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