At the AWS Namche station the DQA035 Lsi-Lastem rain gauge is mounted on a 1,5 m mast. This model of Rain gauge has a 1.000 cmq collector area. The measurement device is composed of a collector cone and a double chamber bascule connected to a magnete that operates one (optional two) reed switch, which generates impulses that can be counted by external meters: each impulse is equal to 0.2 mm of rain (optional from 0.1 to 0.5 mm). The mechanical and electrical specifications are: - Collector surface area: 1000 cmq - Collector area diameter: 420 mm - Measurements range: 180 mm/hr - Resolution: o,2 mm/imp. (opt. 0,1; 0,3; 0,4; 0,5; mm/imp.) - Accuracy: 0-1 mm/min: 1% 1-3 mm/min: 2% 3-5 mm/min: 4% 5-10 mm/min: 8% - Contact: 1 reed (opt. N.2 reed) 0,5 A/24V non inductive - Pulse duration: 100 msec.± 5 - Collector cone material: Brass - External housing material: Inox AISI30 - Tipping bucket material: Alluminium - Cable: 10 m - Weight: 6,3 kg - Power supply: /thermocover 100 W, 24 Vca/Va
At the AWS Lukla station the DQA035 Lsi-Lastem rain gauge is mounted on a 1,5 m pole. This model of Rain gauge has a 1.000 cmq collector area. The measurement device is composed of a collector cone and a double chamber bascule connected to a magnete that operates one (optional two) reed switch, which generates impulses that can be counted by external meters: each impulse is equal to 0.2 mm of rain (optional from 0.1 to 0.5 mm).
At the Pyramid station the the CM6B pyranometer, manufactured by Kipp & Zonen is installed. This sensor is a first class pyranometer as defined by the World Meteorological Organization. It is suitable for the measurement of solar irradiance on a plane surface (W/m2). It incorporates a 64-thermocouple sensor, which is rotationally symmetrical, housed under K5 domes. A white screen prevents the body of the pyranometer from heating up. The pyranometer is supplied with a spirit level and screws for accurate levelling. CM6B technical data - Spectral range 305 to 2800 nm (50%points) - Sensitivity 9 to 15 ?V/Wm-2 - Impedance 70 to 100 Ohm - Response time 1/e 5 s, 99 % 55 s - Non-linearity <1.5 % (<1000 W/m 2 ) - Tilt error <1.5 % at 1000 W/m 2 - Operating temperature -40 to +90 °C - Temperature dependence of sensitivity _2 % (-10 to +40 °C) - Maximum irradiance 2000 W/m2 - Directional error < _20 W/m2 at 1000 W/m2 - Weight 0.85 kg - Cable length 10 m
In the framework of Ev-K2-CNR / SHARE (Stations at High Altitude for Research on the Environment) project the first permanent Automatic Weather Station (AWS) has been installed in Uganda, on July 18, 2006 in the western part of the Stanley Plateau, the biggest Rwenzori glacial mass. The Project was carried out during the celebration of Mt. Ruwenzori first ascent by Duke of Abruzzi in 1906 . This station has the same technical characteristics of the Ev-K2- CNR networks located in the high altitude regions of Himalaya and Karakorum. The station records continuously measurements of the seven meteorological standard parameters: air temperature, relative humidity, wind speed and direction, atmospheric pressure, global solar radiation and total precipitation. The Rwenzori observations will permit to study physical and dynamical processes at Africa high elevations in the framework of SHARE and GEWEX-CEOP HE programs to improve our understanding of variability and change in hydrological and energy cycles and their role in the climate system.
At the AWS Pyramid Laboratory Observatory station the CombiSD DNA022 Lsi-Lastem combined wind speed-direction sensor is mounted on a 5m pole. The CombiSD sensor includes, in a single apparatus, the both transducers for measuring wind speed and wind direction.
The Pyramid station is equipped with sensor (CM6B Kipp&Zonen) for measuring Flux Parameter. It is suitable for the measurement of solar irradiance on a plane surface (W/m2).
The Pyramid station is equipped with sensor (CM6B Kipp&Zonen) for measuring Flux Parameter. In particolar the sensor measures the solar irradiance on a plane surface (W/m2).
A thermohygrometer DMA570 was installed at Urdukas Station. This sensor is manufactured by LSI-Lastem (Italy).The DMA 570 thermohygrometer is an instrument for measuring temperature and relative humidity and suitable for a continuous measurement in severe environments; in presence of deep thermal and hygrometric ranges with high sun radiant heat.
At the AWS Kala Patthar station the DQA030 rain gauge is manufactured by LSI-Lastem equipped with a siphon placed on the cone's nozzle; it has two functions: during light rain the drizzle falls on the bascule without moving it and therefore evaporates without being measured; during heavy rain, it regulates the flow into the bascule permitting all the water to fall inside. LSI-LASTEM rain gauges have stainless steel housing whereas the cone has been designed to avoid the drops splash phenomena and to allow water droplets to dribble down inside even in case of very light rain. The rain gauge can be placed either directly on the ground by means of the DYA042 base plate or mounted on the top or the side of 50 mm diameter. For sites with sub-zero temperatures, the thermostatic heated models ensure the complete melting of snow, even at extreme temperature, whereas minimizing losse of evaporation; these models are insulated to reduce heat dispersion.
At the Kala Patthar station the the CM6B pyranometer, manufactured by Kipp & Zonen is installed. This sensor is a first class pyranometer as defined by the World Meteorological Organization. It is suitable for the measurement of solar irradiance on a plane surface (W/m2). It incorporates a 64-thermocouple sensor, which is rotationally symmetrical, housed under K5 domes. A white screen prevents the body of the pyranometer from heating up. The pyranometer is supplied with a spirit level and screws for accurate levelling.