EKO Instruments

MS-711N Spectroradiometer

ClimateMeteorological Station & Sensors

The MS-711N is a unique all-weather sensor with a temperature-controlled detector core, providing accurate irradiance measurement data within the 300nm to 1100nm (UV-Visible-NIR) spectral range.

Quantity

Overview

A unique all-weather sensor, the MS-711N features a temperature-controlled detector, ensuring optimum performance in hot and cold conditions ranging from -10 to 50°C.

Measuring the spectral range from 300nm to 1100nm (UV-Visible-NIR), the MS-711N comes with NIST traceable calibration, a calibration uncertainty budget, and is compatible with EKO STR-Series sun trackers.

The MS-711N can be set up in an albedometer configuration for measuring spectral albedo in bifacial PV installations and is part of both the WISER I system, covering the spectral range from 300nm to 1700nm (UV-VIS-NIR), and the WISER II system covering 98% of the integrated solar-terrestrial spectrum, from 300nm to 2500nm.

The new generation grating and rugged optical design of the diffusor and input optics in the MS-711N make it superior to any fiber-optic based spectroradiometer by eliminating common issues with mechanical vibration and handling; ideal for permanent installation or as a travelling reference.

The MS-711N has a separate power supply and can be controlled through RS232 / 422 via a PC or data logger. EKO also provides software options for device and data management and visualisation.

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.

Key Features

Robust design, made for outdoor solar research
Temperature controlled detector core
High optical resolution <7nm
Operating temperature range -10 to 50°C
Suitable for spectral albedo measurements
NIST Traceable calibration

Comparison

Comparison of EKO Instruments Spectroradiometers

	MS-711N DNI	MS-711N	MS-712	MS-713
Wavelength Range	300 to 1100 nm	300 to 1100 nm	900 to 1700 nm	900 to 2500 nm
Wavelength Accuracy	± 0.2 nm	± 0.2 nm	± 0.2 nm	± 2 nm
Optical Resolution FWHM	< 7 nm	< 7 nm	< 7 nm	< 20 nm
Temperature Response	< 2 % (-10°C to 50°C)	< 2 % (-10°C to 50°C)	< 5 % (-10°C to 50°C)	< 5 % (-10°C to 50°C)
Temperature Control	25 °C	25 °C	-5 °C	-20 °C
Directional Response at 1000W/m²	-	< 5 %	-	< 5 %
Communication	RS-422 / 232C	RS-422 / 232C	RS-422 / 232C	RS-422 / 232C
Power Consumption	50 W	50 W	65 W	120 W
Ingress Protection	IP65
Field of View (FOV)	5 ° (Collimating tube)	180 °	180 °	-