EKO Instruments

MS-711N DNI Spectroradiometer

ClimateMeteorological Station & Sensors

Unique & all-weather, the MS-711N DNI is a new generation grating spectroradiometer designed to provide the most accurate direct solar spectral data outdoors.

Quantity

Overview

A unique all-weather sensor, the MS-711N DNI Spectroradiometer is designed to provide the most accurate direct solar spectral data outdoors and 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 DNI comes with NIST traceable calibration and a calibration uncertainty budget.

The MS-711N DNI has a compact, fixed, collimating tube with a Quartz window and window heater and can be attached to the STR-21G or STR-22G sun trackers using a robust aluminium mounting plate for automatic tracking.

The new generation grating and rugged optical design of the diffusor and input optics in the MS-711N DNI 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 DNI 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
High optical resolution <7nm
Operating temperature range -10 to 50°C
Temperature controlled detector core
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 °	-