EKO INSTRUMENTS CO., LTD Grating Spectroradiometer MS-713 Instruction Manual Ver5
4. Introduction
The Grating Spectroradiometer MS-713 is developed for measuring solar spectrum outdoor, and it is a unique all
weather concept instrument which can be used in various fields such as meteolorogy, photovoltaic and agriculture.
Solar spectrum changes various ways depending on the season, the time of day, and the regional air mass and
atmospheric composition. In response to changes in the spectrum, the power generation performance of
multi-junction solar cells such as concentrating solar cells significantly change, and the growth conditions of crops
differ. Detailed and quantitative understanding of the sunlight spectrum using a spectroradiometer makes it
possible to analyze the relationship between device performance, crop growth, etc. and the spectrum.
MS-713 can measure the near infrared region in the wavelength range of 900 nm to 2,500 nm.
By using MS-713 in combination with MS-711, it is possible to seamlessly measure a broad wavelength range from
300nm to 2,500nm (MS-711 has a visible/ near infrared region between wavelength range of 300nm and 1,100nm,
MS-713 measures the near infrared region from wavelength 900nm to 2,500nm.)
MS-713 has succeeded to control the temperature of the spectrometer at constant to suppress the temperature
change in spectrometer, which will greatly affects the measurement uncertainty, allowing maintaining a high
performance over a wide operation temperature range. In addition, MS-713 is has better resistances to mechanical
vibration and external force compared to optical fiber type spectrometer due to optimal designs of diffuser and
optical components. Therefore, it provides improved stability for continuously measuring outdoor, and excellent
robustness in transportation for cyclic measurements.
MS-713 have a separate power supply and can be controlled through RS232 / 422 by a PC or data logger. The PC
software provide different fuctions for operating, data management and visualisation.
