An optical bandwidth correction function based on CIE 214 further improves the quality of the measured values. Manual and auto gain settings enable a measurement range from 1 lx to 350,000 lx for illuminance and color measurements. Automatic dark-current suppression is accomplished by means of a built-in electronic shutter. Accurate illuminance measurements require a precise, cosine-corrected entrance optic. The CSS-45 has a cosine response of f2 ≤ 1 %.

The spectral detector head attaches to a PC via a one-meter-long USB cable. The USB interface handles the power requirements. Supplied software controls all measurement, data readout, and collection. An SDK is available for self-programmers.

A unique feature is the CSS-45 RS485 interface to permit fast communications with the device at longer distances for remote applications, the company said.

Every CSS-45 comes calibrated and certified by Gigahertz-Optik’s calibration laboratory that is accredited by DAkkS (D-K-15047-01-00) for spectral responsivity and spectral irradiance calibrations according to ISO/IEC 17025.

Special applications include horticultural lighting, human-centric lighting, and phototherapy.

https://www.gigahertz-optik.de/en-us/product/css-45