22 Weather Monitoring Wind Sensors for all Application at all Climatic Conditions
In 1859 Wilhelm Lambrecht started the production of meteorological instruments which are now supplied to 20.000 customers in more than 150 countries all over the world. The product range was extended by sensors and system solutions for medium budget. The company’s ambition was to reduce the price but to hold the high quality. The result is a sensor portfolio of very best price- performance ratio.
One of the most reliable and cost- efficient wind measuring techniques is still the mechanical wind sensor with moving parts. All kind of wind events and intensities can easily be measured. These sensors are well- approved for decades; long term measuring lines and statistics are based on rotating wind sensors. Lambrecht (Germany) provides wind sensors for all applications and all climatic conditions. For cold areas, rain, ice, hail and snow condition, Lambrecht wind sensors with internal heating device are perfectly dedicated. Lambrecht product line covers the full range of established measuring principles: Sensors with moving parts and without moving parts, hot-wire sensors and ultrasonic sensors, unheated, partly heated and fully heated “ice-free” sensors.
Wind must be measured at different levels and with different methods. The combination of satellite pictures, Sodar systems and the ground- based wind measurement with wind sensors allow us to qualify the wind and to forecast his progression. A trans- national wind warning network is the best real possibility to forecast, warn the population and protect goods in time.
All data from the wind-measuring network are to be collected at the central office of the Meteorological Service or disaster management authority. Lambrecht Meteoware software enables the observer to get a warning in case of high wind or special out- of- range wind events. The data read out of all wind stations and the evaluation of the wind development tendency can easily be carried out on the basis of this and other related meteorological measurements.
Lambrecht Industry and Professional wind sensors dispose of an electronically controlled heating within the sensor head. The heating is supplied together with the sensor electronics and prevents icing at the sensor neck around the moving sensor element. With this heating system the blocking of the moving parts can be prevented under most climatologic conditions. For cold climate and high icing risk specially heated wind sensors PROF-IX2, Eolos and Bluesonc are the first choice. These sensors are fully heated with 70 / 240 Watt.
The sensor series Industry is made of very robust aluminium housing. The moving parts are of special glass- fibre armed polycarbonate / PBT. This material is in use for more than 25 years and is approved as highly reliable and resistant against climatic influences. For the most efficient heating, the sensor housing is thermally separated. The sensors series Industry is the right choice for most industrial standard wind applications.
For cases with high wind speed, cold climate, sand storms, extreme radiation, snow and hail as well as for coastal and off-shore installation, sensor series Professional should be preferred. All parts of this sensors are made of best quality aluminium with a special coated sea water resistant surface protection. The sensor housing is thermally separated. The length of the sensor neck is extended for better resistance against impact of humidity. Professional wind sensors are most robust mechanical sensors. These sensors are in use at all kinds of On- shore and Off- shore wind application, wind power plants, sea platforms, buoys, crane application and many professional meteorological applications all over the world.
For installation sites with high risk of icing, specially heated sensors are necessary. Lambrecht PROF-IX mechanical Ice-Free wind sensor has an internal heating of 125 Watt, which protects the sensor from icing under most cold climate conditions. The sensor is able to melt down snow and ice and to remain ice- free. Since more applications are to be found at cold climate conditions, there is a high demand for fully heated sensors.
In addition to the mechanical Ice Free sensor PROF-IX2, Lambrecht provides for specially heated static wind sensors Eolos and Bluesonc. These sensors are fully heated with 70 / 240 Watt. The measuring element of the Eolos sensor is hot, the hat and the housing are also heated. Due to this special heating technology these sensors are well- protected from icing.
Reader Reply Card No. 65
Weather Data Now On-line you can Now Share your Data
Skye Instruments (UK) are offering WEBVis, a software and service for their MiniMet Automatic Weather Stations. A software which automatically downloads the weather data and uploads it to a dedicated website. In most instances weather data needs to be shared, either locally, nationally or internationally and the internet provides an ideal medium to share
data.No more copying of data onto CDs and handing it round, or emailing files, or forgetting to email files! Your MiniMet Weather Station will be part of the website and you can choose whether your data is available to all internet users, or accessed only with a user name and password. Weather data is displayed graphically and as well as in a tabular format daily, monthly and annually.
Reader Reply Card No. 66 Reader Reply Card No. 67
Lightweight Combined Weather Station
Gill Instruments (UK) presents the MetPak II combined weather station as well as the popular WindSonic wind sensor, Extreme Weather WindObserver and WindMaster Pro ultrasonic anemometers.
The new Gill MetPak II combined weather station is a compact and lightweight multi-sensor instrument that measures a wide range of weather parameters. Gill ultrasonic technology, as used in the proven WindSonic instrument, measures wind speed and direction. Temperature and humidity are measured using industry standard probes housed in a naturally aspirated radiation shield. Barometric pressure is measured within a vented enclosure. A serial data output is provided to interface to industry standard data loggers. Gill Instruments technical sales engineers will be on-hand at the Windpower International show to discuss the new developments in more detail.
The Gill WindSonic anemometer has become the benchmark for low-cost ultrasonic wind measurement technology, offering all of the benefits of this advanced measurement technique at an affordable price. The new variant of the WindSonic is due to incorporate further enhancements to allow use in a broader range of applications and environments.
Reader Reply Card No. 69 Reader Reply Card No. 68
Improved Snow Water Equivalency Sensor
Campbell Scientific (USA) annouces the new GMON3 Snow Water Equivalency (SWE) sensor, produced by Campbell Scientific Canada and developed in collaboration with Hydro Québec. The innovative design of the GMON3 makes it an excellent sensor for non-contact SWE measurement applications.
The GMON3 obtains a measurement by monitoring gamma rays that are naturally emitted from the ground. As snow accumulates on top of the ground, the GMON3 measures an attenuation of the normal background radiation levels. The higher the water content, the higher the attenuation of the gamma radiation. The new sensor measures with an accuracy of ±15 mm from 0-300 mm and ±15% from 300-600 mm, operating
within temperatures from -40°C to +40°C. The GMON3 can output an RS-232 (1200 to 115200 BAUD) signal interface to Campbell Scientific dataloggers or other recording devices. It is effective with any type of snow or ice. Data can be transmitted in near real-time with the addition of a wireless communication option.
Reader Reply Card No. 70
IET May / June 2011
www.envirotech-online.com
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