MS-701 Spectroradiometer 300 to 400 nm


Eko Instruments


  • Continuous outdoor measurements
  • Instant measurement of the UV spectrum
  • Excellent Long term stability of detector array
  • Low temperature dependency of detector
  • Fully controllable by PC and datalogger
  • High quality calibration and NIST traceable

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Like the MS-700, the MS-701 Spectroradiometer is unique in many ways. It is used as a reference instruments for spectral UV irradiance measurements. Its advanced built-in spectrometer covers a spectral measurement range from 300nm to 400nm and guarantees a stable output over time. The detector unit is temperature controlled at a fixed temperature to maximize the performance in a wide operating temperature range. Therefore, it is a valuable component for solar spectral research, optimization of solar cells and quality assurance on site. It can be fully controlled by a PC or Data Logger through the serial command interface.

MS-701 is the all weather grating spectroradiometer for the continuous outdoor use. The spectral range of MS-701 is 300-400nm, which cover the UV(Ultraviolet) range, and the attached software automatically calculate UV-A and UV-B. MS-701 is appropriate for the exposure test of building materials/paints, and the research of harmful influence of UV against human body. Contrary to the filter UV radiometers the spectroradiometer will be much more precise as it precisely measures the defined UV A and B spectrum.

Specifications (Typical) MS-701
Wavelength range 300 to 400 nm
Wavelength interval 0.8 nm
Optical resolution FWHM 3 nm
Wavelength accuracy <0.3 nm
Temp. dependency (-20ºC to 50°C) < ± 1 %
Temp. control 25ºC ± 5ºC
Cosine response (Zenith angle: 0 to 80º) < 7 %
Stray light 0.22 %
Exposure time 10msec - 5sec Automatic adjustment
Dome material Quartz Glass
Communication RS-422 (Between sensor and power supply)
Power requirement 12VDC, 50VA (from the power supply)
Operating temperature range (°C) - 10 to +40

Diameter 200 x Height 175mm

(With sun screen:  240 (φ) x 175 (H) mm)

Weight 4kg
Power Supply   
Input AC100-240V, 50/60Hz, 50VA
Output DC12V
Communication RS-232C (Between power supply and PC)
Operating Environment

Temperature: 0 to 40°C, Hunidity: 0 to 90 %RH

*No condensation

Dimension 200 (W) x 140 (D) x 80 (H)
Weight 1kg