Weather Monitoring Sunshine Pyranometer for PV Applications
Photovoltaic developers and triallists find the SPN1 Sunshine Pyranometer from Delta-T Devices (UK), a valuable tool for research and for performance validation. When making PV investments, it is essential to identify the best sites. An SPN1 can be used to quantify the available global and diffuse radiation at potential sites.
The key advantage of the Sunshine Pyranometer type SPN1 is that it measures global (total) and diffuse radiation, and sunshine state – all in one instrument; it is easy to use and needs no routine adjustment or polar alignment. The SPN1 is a meteorological class instrument designed for long- term outdoor exposure, and is an affordable alternative to traditional shade-ring pyranometers and other sunshine recorders. It also provides some of the functionality of expensive pyrheliometers; working at any latitude with no moving parts, no shade rings, no motorised tracking needed
The unique design of the Sunshine Pyranometer uses a patented array of thermopile sensors and a computer-generated shading pattern to measure the direct and diffuse components of incident solar radiation, being protected by patents EP 1012633 & US 6417500.
The Sunshine Pyranometer provides 2 voltage outputs for global and diffuse energy, and a digital output of sunshine state for data logging. The internal heater keeps the Sunshine Pyranometer clear of dew, ice and snow down to –20°C, ensuring reliable readings in difficult climatic
conditions. In summary, the Sunshine Pyranometer is a high performance instrument offering a unique combination of solar radiation measurements in a single, low maintenance device, making it ideal for PV applications.
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info@aet-pub.com 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.
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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.
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Weather Data Now On-line, 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. Once installed you will wonder how you ever managed without it!
ATMOS (France) has developed a range of instruments for cloud cover monitoring based on a passive infrared technology. This range called (Cloud Infrared Radiometer) includes CIR4 (time series device) and CIR 13 (scanning device). These instruments have been deployed in various locations around the world for various purposes, from regular weather forecast, up to Atmospheric stability class in Air Quality applications. A scanning unit called CIR-M for cloud monitoring has been released and will be available to provide water contents of the atmosphere.
Cloud Cover Monitoring
Wind, Temperature, Humidity, Precipitation, Solar Radiation, Atmospheric Pressure, Win emperature, Humidity, Precipitation, Solar Radiation, Atmospheric Pressure, Wind, Tem ture, Humidity, Precipitation, Solar Radiation, Atmospheric Pressure, Wind, Temperatur umidity, Precipitation, Solar Radiation, Atmospheric Pressure, Wind, Temperature, Hum y, Precipitation, Solar Radiation, Atmospheric Pressure, Wind, Temperature, Humidity, recipitation, Solar Radiation, Atmospheric Pressure, Wind, Temperature, Humidity, Prec
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Meteorological Instruments
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AET October / November 2011
www.envirotech-online.com
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