As EKO received many questions from the CPV market to measure the spectral distribution of direct solar radiation. Being aware of the requirements in concentrated photovoltaics, EKO Instruments developed a unique system for the measurement of the direct spectral solar irradiance: the MS-700 DNI.

The GPS Sun tracker based system with the MS-700 spectroradiometer features a precision collimator tube designed according to the DNI-related WMO and ISO norms. While the GPS Sun tracker operates autonomously, the MS-700 DNI can either be controlled by the PC software or a programmable data logger. The new compact collimating tube is available for the MS-700 spectroradiometer. In combination with the MS-700 mounting kit the MS-700 with collimating can be fitted to any STR-Sun tracker.

Go to MS-700 DNI product page

EKO Instruments is proud to announce the new DNI pyrheliometer “MS-56” with innovative compact design features and an unprecedented performance. The MS-56 DNI sensor fulfills the present most stringent requirements of the (C)PV and meteorological market, notably a very fast detector response for instantaneous and accurate DNI measurements.

The ISO First Class pyrheliometer “MS-56” is a high quality DNI (Direct Normal Incidence) solar radiation sensor which is well suited to be used as a reference instrument for precise and accurate direct solar irradiance measurements and routine operation on a solar tracker.

EKO’s R&D team adopted most recent technological innovations such as an ultra fast new thermopile detector with 95% response time <1s and excellent thermal stability. Even though the MS-56 is a relatively light-weight construction, due to its well balanced design zero-offset effects were eliminated to guarantee the best measurement stability during variable environmental and solar irradiance conditions. Each MS-56 sensor includes a passive temperature compensation module to minimize the common detector temperature dependency to less than 0,5% over a wide temperature range (-20oC to 50oC). The detector temperature can be accurately monitored with the built-in PT-100 RTD or YSI 44031 10kΩ NTC. The possibility of dew-deposition or condensation on the outside of the entrance optics is significantly reduced with the built-in low-power heater at the inside of the sensor.

Getting curious to test its performance? The MS-56 will be available from June 2011.