Photobiological measurements
complete according to IEC 62471
The JETI spectroradiometer specbos 1211UV-2 can be equipped with accessories for measurements of all photobiological measurements in the wavelength range from 230 to 1000 nm, defined by EN 62471. These accessories have been completely developed according to IEC 62471. All 8 categories of hazardous effects defined in EN 62 471 and ANSI/ IESNA RP-27 can be measured with the system, the only restriction is the measuring range of 230 to 1000 nm.
Such measurements are more and more important especially regarding the modern bright LED illumination and the related hazard to people, to the eyes and the skin. Typical measuring objects are spotlights in studios and during events, machines with UV illumination and LED modules.
Highlights
- Measurement of all 8 hazard categories
- Configuration for Radiance as well as Irradiance based quantities
- Special calculation window in software JETI LiVal for values, risk group classification and maximum exposure time
- NIST traceable calibration
- Included neutral density filters for extreme intensities
More basic facts of photobiological measurements and the specifics with specbos 1211UV-2 are described in the technical note 26.
There are several special accessories are available for this task
- Optics for 11 mrad and 100 mrad Radiance measurement with UVOD2 filter (ACC 024)
- Mechanical elements for turning/ tilting (ACC 025)
- Diffusor for Irradiance measurement (Actinic UV and UVA hazard) (ACC 026)
- 80° aperture for diffusor (ACC 027)
- UV filter UG 5 (ACC 021 UG5)
Accessories for the different hazard categories
| Measuring mode | Hazard category | Accessory name | Order number |
| Radiance | Blue Light Hazard | Beam shaping optics for 100 mrad and for 11 mrad with internal attenuation and additional external OD1 and OD2 filters | ACC 024 |
| Radiance | Blue Light Hazard | Aperture tube for 1.7 mrad, measurements only in combination with ACC 026 and in a fixed distance of 200 mm |
ACC 054 |
| Radiance | Retina thermal | Beam shaping optics for 11 mrad with internal OD2 filter and additional external OD1 and OD2 filters | Included in ACC 024 or separately as ACC 024/11 |
| Radiance | Blue Light Hazard, Retina thermal |
Mechanical elements for turning/ tilting the device to find the maximum emission of the source | ACC 025 |
| Irradiance | Eye UVA, Actinic UV, Eye IR, Skin thermal, Blue light small source | Diffusor for Irradiance measurement, spot size Ø8 mm |
ACC 026 |
| Irradiance | Eye UVA, Actinic UV, Eye IR, Skin thermal | 80° aperture for Diffusor ACC 026 | ACC 027 |
Please note:
It is recommended in the standard EN 62471 to proceed photobiological measurements with a double monochromator based system. A spectroradiometer with an array spectrometer as specbos 1211UV-2 can be used only if its applicability is proved! Due to the specifics of photobiological measurements it is recommended to discuss the application with JETI to find the best solution.
