Spectrometer and spectroradiometer SR900

The SR900 is a compact spectroradiometer for spectrally resolved measurements in the UV, the visible range and the IR – on UV lamps, LEDs, irradiation systems and luminaires. Unlike a broadband radiometer it disperses the radiation and therefore makes lamp types with different spectra comparable, without a spectral mismatch error distorting the result. An array spectrometer without moving parts and a silicon detector with 2048 pixels deliver 2.3 nm resolution (FWHM) at 0.44 nm pixel spacing; the low stray-light design preserves sensitivity in the UV.

Reference spectra of common UV sources are collected in the UV spectra database.

The SR900 is combined with an SMA-905 quartz light guide and our radiometric sensor heads for measuring the irradiance and illuminance.

Traceable to the PTB, the SR900 is factory-calibrated. A DAkkS test in our accredited laboratory is optionally available. The SR900 thus enables exact spectroradiometric measurements for the assessment of irradiances and illuminances, biological effectiveness and color measurements. Due to the nearly scatter-free construction, a high sensitivity in the UV range is reached. Control and data evaluation is carried out by the spectral software SRpro. 

For the SR900 we additionally offer a wide range of accessories, which are combinable with customized extensions.

For luminous flux measurements and LED measurements, the SR900 can be combined with our integrating sphere.