These sunshine recorders (also known as Campbell-Stokes recorders), measure the number of hours in the day during which the sunshine is above a certain level (typically 200 mW/cm 2). It looks to modern eyes like a prop from the set of the latest Harry Potter film. Devices known as “Blake-Larsen” recorders tend to be some of the most technologically advanced. Sunshine recorder (Campbell–Stokes recorder) records the sunshine at a location, it record the hours of bright sunshine which will burn a hole through the card. No drum is necessary as the recording medium itself is moving. The insolation tells solar technicians what collector area would be necessary to achieve a certain power output. Farmers need to know the weather to plan their work, such as harvesting or drying hay. What Instrument Is Used to Measure Sunshine? This uses a glass sphere to focus the sun’s rays to burn a trace on a curved piece of card behind it. In order to use your pyranometer, you need to record its output. The purpose of this paper is to compare daily sunshine duration data measured using a Campbell-Stokes sunshine recorder (CS) and a CSD3 sunshine duration sensor (AUTO) as well as to attempt to explain discrepancies between the two data sets. The Campbell-Stokes sunshine recorder is a reference in-strument to measure daily sunshine duration and is used worldwide since 1880 (Sanchez-Lorenzo et al.,2013). This allows PV systems to effectively generate electricity in partly overcast conditions. 7.1.2 Sunshine Duration Measuring Instruments Campbell-Stokes sunshine recorders and Jordan sunshine recorders have long been used as instruments to measure sunshine duration, and are advantageous in that they have no moving parts … Data collected in this way can be used to determine the solar insolation by comparing the measured number of sunshine hours to those based on calculations and including several correction factors. Dee is a freelance writer based in Colorado. In fact many are still in use to this day. Fishermen need to know if sea conditions could be dangerous so they … Photo credit: Akulovz/Wikimedia, A Campbell–Stokes sunshine recorder on mountain Lisca near Sevnica, Slovenia. It is relatively accurate and provides a total duration of sunshine to the nearest tenth of an hour every day of the year. When sunlight is detected by the sensor, it will be transformed into electricity. As the sun blazes across the sky, the hot image of the sun traces a scorching path on the paper. Sunlight shines into one side of a glass ball and leaves through the opposite side in a concentrated ray. NASA says that without sunlight, … I have heard of instruments used to measure wind speeds, but I did not know there were specialized instruments to measure solar radiation. Campbell couldn't get hold of a glass sphere, but he did found a hollow glass globe which he filled with water and turned it into a lens. The other type uses some form of clock for the time scale. In general, solar radiation can be in one of two forms: direct or diffuse. Modern sunshine recorders use electronics and computers for precise data that do not depend on a human interpreter. A pyranometer is used for measuring global radiation. A sunshine recorder is used to measure the duration of sunshine. The intensity and the position of the burn indicates the time and the strength of the sunshine. meteorological station . 1. The sunlight burns or chars a mark onto the card. Ultra-Simple Pinhole Camera Sunshine Recorder The simplest sunshine recorder is a light-tight enclosure in which blueprint paper is placed opposite a pinhole. 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