00fa32c9-6916-4479-a16c-c1998cc4415b eng fa538866-39e0-47b5-b048-980e1821bd68 Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy metadata@evk2cnr.org http://www.evk2cnr.org 2025-01-21T08:51:59 ISO 19115:2003/19139 1.0 1 WGS 84 (EPSG:4326) EPSG 7.4 Pheriche Wind Speed 2011-05-20T03:00:00 A combined wind Speed-Direction sensor take hourly measurements of wind speed and direction. TThe CombiSD DNA022 sensor includes, in a single apparatus, the both transducers for measuring wind speed and wind direction. Its use simplifies the installation and the plant design in respect of the sensors with separate measurements plus giving some other advantages being smaller, lighter and cheaper. Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy evk2cnr@evk2cnr.org http://www.evk2cnr.org/ https://geoportal.mountaingenius.org/geonetwork/srv/api/records/00fa32c9-6916-4479-a16c-c1998cc4415b/attachments/evk2cnr__.png https://geoportal.mountaingenius.org/geonetwork/srv/eng/resources.get?uuid=00fa32c9-6916-4479-a16c-c1998cc4415b&fname=logoSHAREnuovo_s.png thumbnail png thermal power plant GEMET SHARE Network Station High Altitude CEOP Nepal Pheriche Khumbu Valley Sagarmatha National Park wind speed wind direction No conditions apply climatologyMeteorologyAtmosphere environment geoscientificInformation 80.0522 88.1946 26.3684 30.4247 http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/ceop_ap/Himalayas/Pheriche/ Himalayas Reference Site Pheriche Station https://geoportal.mountaingenius.org/geonetwork/srv/api/records/00fa32c9-6916-4479-a16c-c1998cc4415b/attachments/Data%20Usage%20Policy.pdf WWW:DOWNLOAD-1.0-http--download Wind velocity is a three-dimensional vector quantity with small-scale random fluctuations in space and time superimposed upon a larger-scale organized flow. It is considered in this form in relation to, for example, airborne pollution and the landing of aircraft. The WMO Guide will be considered surface wind as a twodimensional vector quantity specified by two numbers representing direction and speed. The extent to which wind is characterized by rapid fluctuations is referred to as gustiness, and single fluctuations are called gusts. The station was installed on October 2001. The instrument is mounted on a 5m mast. The CombiSD sensor includes, in a single apparatus, the both transducers for measuring wind speed and wind direction. Its use simplifies the installation and the plant design in respect of the sensors with separate measurements plus giving some other advantages being smaller, lighter and cheaper. The CombiSD sensor is available in different versions: -DNA021-022: sensors with direct signal output. Frequency (Hz) for wind speed and resistance (Ohm) for wind direction. These sensors are suitable for acqusition systems, as LSI-LASTEM ones, able to recognise and manage this kind of electrical output. DNA022 model has low power consumption, it can be used in systems with small energy availability. Principle of operation:3 cups and vane anemometer Speed sensor: Optoelectronic disk Direction sensor:2000 Ohm wire potentiometer The technical characteristics are: - Principle of operation: 3 cups and vane anemometer - Speed sensor: Optoelectronic disk - Direction sensor: 2000 Ohm wire potentiometer / Positioning Hall effect sensor - Housing: Heavy gauge anodised aluminium - Shaft carriers: Low-torque stainless steel bearings - Protection (vertical position): IP65 - Mechanical mounting: On 48 50 mm diameter mast - Electrical outlet terminators: IP65 watertight connector - Weight (instrument with rotors): 950 gr. The Physical and operational specification are: - damage threshold > 75 m/s - operating temperature: -30°+70°C The speed measures are specified by: - Measurement range: 0-60 m/s (using transfer function) - Threshold: 0,21 m/s - Response time (63% at 5 m/s): 0.8 s - Distance constant (delay distance) at 5 m/s: 4 m - Resolution (integration time=1s): 0.05 m/s - Accuracy & Linearity: 0,1 m/s+1%VL (readout), if connected to LASTEM data loggers. The direction measures are specified by: - Measurement range: 0 ÷ 360 - Threshold: 0,15 m/s - Response time (at 5 m/s): 0,26 s - Delay distance (at 5 m/s): 1,32 m - Damping coefficient (VDI3786): 0,21 - Transfer function: Dir(°)= 355 x R(Ohm)/2000 - Resolution: 0,1 - Accuracy: 1% FS (Full scale) - Integral linearity: 0,5% No conditions apply