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MS-712 Spectroradiometer

Make: Eko                                      Model: MS-712
✅ Temperature-controlled & optimised to provide the most accurate irradiance measurement data within the spectral range from 900nm and 1700nm (Visible-NIR).
✅ Measurand : Solar Irradiance.
✅ Sensor Type : Photodiode Array.
✅  Signal Output : Communication RS-422 / 232C.
✅ Supplied With : 10 m cable ( Optional- 20 / 30 m ), Factory test/ Calibration Certificates.

MS-712 Spectroradiometer:

The MS-712 can be used stand-alone but is commonly used in combination with the MS-711 to cover the spectral range . MS-712 covers the near-infrared (NIR) range between 900nm and 1700nm. Both spectroradiometers are accurately calibrated with traceability to the International Standards and issued with a calibration uncertainty budget.

The MS-711 and MS-712 spectroradiometer are unique all-weather concept spectroradiometers with no moving parts and temperature controlled spectrometers.

Temperature changes of the detector inside the spectrometer have a strong effect on the measurement uncertainty. Therefore the sensor unit inside the MS-711 and MS-712 main body is accurately controlled at a stable temperature in order to provide the best performance in a wide operating temperature range. The rugged optical design of the diffusor and input optics make the MS spectroradiometer series concept superior to any fiber optic spectroradiometer which will be susceptible to mechanical vibration and handling. The MS spectroradiometer series are designed for permanent installation but are perfectly suited as a traveling reference.

Both spectroradiometers have a separate power supply and can be controlled through RS232 / 422 by a PC or data logger. The PC software provides different functions for operating, data management and visualization. Software can also be customized to the individual users purpose by making use of the existing system control functions through the open command protocol.

For solar spectral research, we believe only one measurement concept can be the best. The combination of MS-711 and MS-712, called WISER is the reference in the market and designed to provide the most accurate solar spectral data outdoors.

A unique all-weather sensor, the MS-712 features a temperature-controlled detector, ensuring optimum performance in hot and cold conditions ranging from -10 to 40 °C. Measuring the near-infrared (NIR) range from 900 nm to 1700 nm, the MS-712 comes with NIST traceable calibration, a calibration uncertainty budget, and is compatible with EKO STR-Series sun trackers.

The MS-712 is commonly paired with the MS-711 as part of the WISER I system to cover the spectral range from 300 nm to 1700 nm (UV-VIS-NIR). The new generation grating and rugged optical design of the diffusor and input optics in the MS-712 make it superior to any fiber-optic-based spectroradiometer by eliminating common issues with mechanical vibration and handling; it is ideal for permanent installation or as a traveling reference.

The MS-712 has a separate power supply and can be controlled through RS232 or 422 on a PC or data logger. EKO also provides software options for device and data management and visualization. EKO Spectroradiometers deliver top-tier spectral measurements and detail about energy distribution (W/m2/nm), essential for effective PV or CPV cell research and performance analysis.

Application and features of MS-712 Spectroradiometer:



✅ PV or CPV cell research
✅ Performance analysis
✅ Solar spectral data outdoors
✅ Continuous outdoor measurements
✅ Instant measurement of spectrum 900 nm – 1700 nm
✅ Excellent Long term stability of detector array
✅ Low temperature dependency of detector
✅ Fully controllable by PC and datalogger




General Specification


Wavelength Range

900 – 1700 nm (50% points)

Optical Resolution FWHM

< 7 nm

Wavelength Accuracy

+/- 0.2 nm

Operating Condition

Operating temperature range : -10 to +40 °C
Power supply operating conditions : -10 to +40°C / 0 to 90 %RH

Field of View (FOV)

180 °


RS-422 / 232C


7.5 kg, Power supply weight : 1 kg

Power Supply

12VDC, 50VA, Power supply (Power Adapter) : 100-240VAC, 50/60Hz

Power Consumption

65 W

Dimension (mm)

300 (D) x 200 (H), Power suply dimensions (mm) : 320 (W) x 240 (D) x 180 (H)


Analysis software WSDAc


Microsoft Windows 7/8/9/10


Display and analyze data

Temperature Response

< 5 %

Temperature Control

-5 °C

Exposure Time

10 – 5000 msec

Dome Material


Protection Level


Cable Length

10 m

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