Stevenson screens face north, which combined with their colour and slats, give us the best measure of the current temperature, without getting too hot in direct sunlight or being too cool in the shade. 0 0 1. Instruments Temperature. Some weather instruments can be quite expensive and need to be kept secure. The screen consists of a box, with sides ventilated by louvres, a ventilated floor and upper part, and an air space between an inner and outer roof. 2. 2020-04-16 12:34:38 2020-04-16 12:34:38. thermometer. Maximum and minimum temperature thermometers are placed inside a Stevenson Screen. A purpose made wooden Stevenson Screen with its metal stand is very expensive but very effective. A platinum resistance thermometer (PRT) is used for the measurement of air temperature at all synoptic stations and all supplementary stations that employ an automatic system.The thermometer is exposed in a Stevenson screen (see image above) at a height of 1.25 m above the ground and aspirated only by natural ventilation through the side louvers. The unit is either supported by four metal or wooden legs or a wooden post. Hope it will u..! Instruments used to measure temperature are usually placed in a Stevenson screen. A psychrometer (wet and dry bulb thermometer) 3.A Thermograph (a chart recorder that measures and records temperature. The Stevenson Screen normally carries maximum and minimum thermometers, dry and wet bulb thermo­meters. The Stevenson Screen was designed by Thomas Stevenson (1818 - 1887), a British civil engineer and father of the author Robert Louis Stevenson. New Description of Box for Holding Thermometers, Thomas C.E. It is made out of wood and painted white. A Stevenson screen or instrument shelter is a shelter or an enclosure to meteorological instruments against precipitation and direct heat radiation from outside sources, while still allowing air to circulate freely around them. However, if you look closely at a “real” Stevenson screen, you will notice that the side panels have louvres sloping downwards on both the outside AND the inside. Offering relatively low cost and low maintenance, and ending the hassle of continual painting and repair. 백엽상(百葉箱, 영어: white-painted instrument shelter or Stevenson screen, 독일어: Thermometerhütte, 네덜란드어: Weerhut)은 기상학에서 각종 측정 도구를 눈비 및 지열을 비롯한 외부 열복사에 노출되지 않게 하기 위해 만드는 함이다. The Stevenson screen holds instruments that may include thermometers (ordinary, maximum/minimum), a hygrometer, a psychrometer, a dewcell, a barometer and a thermograph. picture A stevenson screen is a shelter or enclosure for weather and meteorological instruments. Stevenson Screen - wooden. The louvred sides are double so that no rain or wind can get in. You may want to put a padlock on the Stevenson screen door to stop anybody resetting the instruments or tampering with them. The Stevenson Screen is a double-louvered wooden box, painted white and specially designed to shield the thermometers from the direct rays of the sun, from precipitation, and from heat radiation from the ground. What is a stevenson screen? Stevenson Screen is available with multiple payment options and easy delivery. 상술한 장애물들을 피하면서, 공기는 통할 수 있게 만든다. The interior size of the screen will depend on the number of instruments that are to be used. The floor of the screen is also louvered. Simple white wooden cupboard with louvered front lockable door for housing weather One side of the screen is hinged to serve as a door which can be opened and closed to give access to the instruments kept inside. 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