The physical constraints and requirements of many optical radiation measurement tasks prevent the use of handheld instruments such as our MSC15 and BTS256-EF. Despite their extremely compact design, the powerful BTS2048-Series spectroradiometers may be over specified. For such applications, Gigahertz-Optik GmbH offers an interesting alternative with the new intelligent spectral detector CSS-45.
A compact metal housing with various mounting options enables universal integration of the CSS-45 in measurement setups. The robust housing and its connectors are splash proof, and therefore suitable for use in industrial applications. A variant with protective glass dome in front of the diffuser is available. A special feature of the detector is its remote-controlled shutter, which allows a dark level measurement to be made at any time.
The CSS-45 detector incorporates a powerful microprocessor which performs not only data acquisition but also all necessary lighting calculations. Both USB and RS485 interfaces are standard enabling the flexible configuration of single and multi-detector based systems. An optional software development kit supports integration into third party application software.
With its wide spectral range from 360 nm to 830 nm the CSS-45 is ideal, for example, as a high accuracy photometric and colorimetric detector (according to CIE S023). The precision diffuser provides excellent cosine correction (f2 ≤ 1.5 %). The optical bandwidth correction feature (CIE 214) further improves the quality of the spectral measurement data. Manual and auto gain settings enable a wide measurement from 1 lx to 350,000 lx for illuminance and color measurements.
Additional functions of the CSS-45
The embedded intelligence of the CSS-45 enables the direct output of a comprehensive range of radiometric, photometric and colorimetric parameters based on the measured spectral data. Additionally, specialist functions are incorporated for particular applications fields including:
- Horticultural lighting – PAR measurement Photosynthetic Photon Flux Density (PPFD) in μmol/m²s.
- Human Centric Lighting – melanopic irradiance and illuminance, melanopic daylight equivalent illuminance.
- Phototherapy – total irradiance for bilirubin, Ebi, in mW/cm2 (IEC 60601-2-50) as well as average spectral irradiance in μW/cm2/nm (American Academy of Pediatrics).
Calibration of the CSS-45
One essential quality feature of spectroradiometric devices is their precise and traceable calibration. The CSS-45 is calibrated by Gigahertz-Optik’s calibration laboratory which is accredited by DAkkS (D-K-15047-01-00) for the spectral responsivity and spectral irradiance according to ISO/IEC 17025. Every device is supplied with its unique calibration certificate.
Options for the CSS-45
- Software development kit for integration of the device in the user’s own software
CSS-45 detector head
Remote spectroradiometric detector for universal use in radiometric and photometric measurement setups.
Remote operation via USB 2.0 or RS 485. Compact, robust, splashproof housing with universal mounting options. Direct output of radiometric, photometric, colorimetric and specialist functions. Precision cosine diffuser. Remote controlled dark level shutter. Application software.
|Range of measurement||
1 lx to 350,000 lx (for white LED), 360 nm to 830 nm.
Photometric and radiometric setups requiring remote positioning of single or multiple detectors. Use with positioning equipment e.g.for mapping. Industrial monitoring, grow lights, blue light phototherapy, human centric lighting.
Factory calibration. Traceable to international calibration standards.
Diffuser window with 10 mm diameter, cosine corrected field of view, f2 ≤ 1.5 %
Detector head for illuminance and light color.
(Class B according DIN 5032-7 or AA according to JIS C 1609-1:2006)
(360 - 830) nm
optical bandwidth correction applied according to CIE 214
|Measurement range typ. white LED||
(1 - 350,000) lx
|Δx, Δy reproducibility||
|Δx, Δy uncertainty||
± 0.002 (Standard illuminant A)
|CCT Measurement range||
(1700 - 17000) K
± 50 K (standard illuminant type A)
± 4 % (depending on the LED spectrum)
Illuminance (standard illuminant A) ± 3 %
Illuminance (typ. LED) ± 4 %
(Traceable to national standard. Uncertainty of the standard is included)
USB 2.0, RS 485
Operation: 10°C to +30°C
Storage: -10°C to +50°C
5 VDC by USB
(3.5 - 25) VDC by custom plug
max. current 500 mA
130 g, only sensor without cables
45 mm diameter
53 mm height*
* height without WT protection dome
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