Spectroradiometers for Radiometry

Comprehensive range of spectroradiometers for measuring radiometric parameters in the spectral range 200 nm to 2150 nm.

More info

Over the years, we have developed a variety of spectroradiometer device variants to cover a wide range of spectral ranges from UV, VIS to NIR (200 nm to 2150 nm) and applications. Devices can be equipped with various entrance optics directly mounted or configured for use with optical fibers. Laboratory, industrial or weather proof devices, as well as mobile handheld or orientation-independent devices for goniometers are available.

We would like to mention that not all versions are presented on the webpage. Please contact us if you look for something very specific. We are experts in customized spectroradiometric solutions, especially due to our ISO 17025 calibration laboratory which is able to calibrated all kind of quantites in customized setups. In general for all versatile high-end BTS2048 spectroradiometer series versions fiber coupled versions with own optical fiber connectors or FC fiber are possible. Beside spectral irradiance optics as well integrating spheres for spectral radiant power and lenses for spectral radiance are available.

See here an overview of the different possible spectral ranges:

A family of compact, high-performance spectroradiometers with fixed entrance optics or for use with fibre bundles

Model	Entrance Optic	Spectral range / nm	Optical Bandwidth	Measurement range - broadband detector	Measurement range - Spectral sensor	Remark
BTS2048-UV	10 mm Ø Cosine diffuser f2 ≤ 3%	(190 - 430) nm	0.8 nm	(5E-3 - 2E5) W/m² (1)	(3E-5 - 3E4) W/(m²nm) @325nm	Very good stray light reduction. Versatile for all kind of UV measurements.
BTS2048-UV-S	10 mm Ø Cosine diffuser f2 ≤ 3%	(190 - 430) nm	0.8 nm	(5E-3 - 2E5) W/m² (1)	(3E-5 - 3E4) W/(m²nm) @325nm	Excellent stray light rejection, special mode for solar similar measurements.
BTS2048-UV-2	10 mm Ø Cosine diffuser f2 ≤ 3%	(200 - 550) nm	1.0 nm	(5E-3 - 2E5) W/m²	(2E-5 - 1.5E4) W/(m²nm) @325nm	Very good stray light reduction. Versatile for all kind of UV measurements with extended wavelength range compared to BTS2048-UV with slightly increased optical bandwidth.
BTS2048-BS	10 mm Ø Cosine diffuser f2 ≤ 3%	(400 - 530) nm	0.3 nm		(1E-3 - 1E7) W/(m²nm)	High resolution spectroradiometer for e.g. blue lasers
BTS2048-VL-TEC	10 mm Ø Cosine diffuser f2 ≤ 3%	(280 -1050) nm	2 nm	0.1 lx - 3E8 lx	(1E-6 - 1E5) W/(m²nm)	Versatile high-end spectroradiometer with very wide spectral range.
BTS2048-VL-TEC-X	10 mm Ø Cosine diffuser f2 ≤ 3%	(280 -1050) nm	1 nm	0.1 lx - 3E8 lx	(1E-5 - 1E6) W/(m²nm)	For use as Transfer Standard Spectroradiometer - spectral irradiance
BTS2048-VL	10 mm Ø Cosine diffuser f2 ≤ 3%	(280 -1050) nm, see limitation for calibration	2 nm	0.1 lx - 3E8 lx	(1E-5 - 1E5) W/(m²nm)	Reduced version of the BTS2048-VL-TEC. Due to the omission of cooling, it is attractively priced if short measuring times are expected.
BTS2048-UVVISNIR	10 mm Ø Cosine diffuser f2 ≤ 3%	(200 - 900) nm	2 nm	(5E-3 - 2E5) W/m²	(1E-6 - 1E5) W/(m²nm) @550nm	Versatile high-end spectroradiometer with wide spectral range vom UV, VIS to NIR.
BTS2048-NIR	10 mm Ø Cosine diffuser	(950 - 1700) nm	5.5 nm	(15 to 6E7) W/m² + filter option	(1E-4 - 2E4 W/(m²nm) @1350 nm	NIR spectroradiometer with a wide dynamic range
BTS2048-IR	10 mm Ø Cosine diffuser	(950 -2150) nm	9 nm	(15 - 6E7) W/m²	(2E-4 - 1E4) W/(m²nm) @1600 nm	Versatile high-end spectroradiometer for the IR range.
BTS256-UV	Diffuser 10 mm Ø	(200 - 525) nm	2.8 nm		(0.01-1000) W/(m²nm), depending on spectral distribution, higher values possible	Handheld spectroradiometer, ideal for UV curing
BTS256-EF	Diffuser window with 20mm diameter, cosine corrected field of view, f2 Error ≤ 3%	(360 - 830) nm	10 nm, mathematical optical bandwidth correction according to CIE 214 can be automatically applied	(0.01 - 199999) lx	(1E-4 - 3E2) W/(m²nm) @ 500 nm	Versatile handheld spectroradiometer with fast photodiode which allows Flicker measurements, color measurements, etc., WiFi option
CSS-45-UV	10 mm Ø Cosine diffuser f2 ≤ 1.5%	(200 - 440) nm	5.5 nm optical bandwidth correction applied according to CIE 214	n/a	typ. (10E-4 - 10E2) W/(m²nm)	Compact UV spectroradiometer in 37 mm detector housing. Can be combined with CSS-D display unit or direct PC remote control (USB).
CSS-45	10 mm Ø Cosine diffuser f2 ≤ 1.5%	(360 - 830) nm	10 nm optical bandwidth correction applied according to CIE 214	n/a	1 lx - 350,000 lx (white LED)	Minispectroradiometer in 37 mm detector design. Can be combined with CSS-D display unit or directly PC remote control (USB).
CSS-45 with CSS-D	10 mm Ø Cosine diffuser f2 ≤ 1.5%			n/a	1 lx - 350,000 lx (white LED)	CSS-45 combined with CSS-D display unit
BTS256-LED	Integrating sphere 15mm Ø entrance port	(360 - 830) nm	5 nm	70000 lm	10 mlm - 1100 lm	Spectroradiometer with BiTec sensor for single LED test. Can also be combined with integrating spheres.
BTS2048-UV-S-WP	10 mm Ø Cosine diffuser f2 ≤ 3%	(190 - 430) nm	0.8 nm	(5E-3 - 2E5) W/m² (1)	(3E-5 - 3E4) W/(m²nm) @325nm	Weatherproofed for outdoor use (UV)
BTS2048-VL-TEC-WP	10 mm Ø Cosine diffuser f2 ≤ 3%	(280 -1050) nm	2 nm	0.1 lx - 3E8 lx	(1E-6 - 1E5) W/(m²nm)	Weatherproofed for outdoor use (extended Visible-NIR range)
BTS2048-IR-WP	10 mm Ø Cosine diffuser	(950 -2150) nm	9 nm	(15 - 6E7) W/m²	(2E-4 - 1E4) W/(m²nm) @1600 nm	Weatherproofed for outdoor use
BTS2048-VL-F	Light guide adapter F16-F	(280 -1050) nm, if a calibration down to 280 nm is needed we recommend the BTS2048-VL-TEC-F version	2 nm	* (2)	* (2)	Fiber-coupled version of the BTS2048-VL
BTS2048-UV-F	Light guide adapter F16-F	(190 - 430) nm	0.8 nm	* (2)	* (2)	Fiber-coupled version of the BTS2048-UV
BTS2048-VL-TEC-F	Light guide adapter F16-F	(280 -1050) nm	2 nm	* (2)	* (2)	Fiber-coupled version of the BTS2048-VL-TEC