---

JETI UV spectroradiometer specbos can be equipped with accessories for measurements of all photobiological measurements in the wavelength range from 200 to 1100 nm (specbos 2511-UV, specbos 2501-UV) or 230 to 1000 nm (specbos 1211-UV-2), 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 200 to 1100 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 2501-UV are described in the technical note 26.

Several special accessories are available for this task

• Optics for 11 mrad and 100 mrad Radiance measurement with UVOD2 filter
• Mechanical elements for turning/ tilting
• Diffusor for Irradiance measurement (Actinic UV and UVA hazard)
• 80° aperture for diffusor
• UV filter UG 5

Measurement of a spot light in a studio with specbos 1211-UV-2

Accessories for photobiological measurements

Accessories for the different hazard categories

Measuring mode	Hazard category	Accessory name	Part number
Radiance	Blue Light Hazard	Beam shaping optics for 100 mrad and for 11 mrad with internal attenuation and additional external UVOD1.0 and UVOD2.0 filters	ACC 024 (specbos 1211-UV-2) ACC 080 (specbos 2511-UV / 2501-UV)
Radiance	Blue Light Hazard	Beam shaping optics for 100 mrad with internal attenuation and additional external UVOD1.0 and UVOD2.0 filters	ACC 024/100 (specbos 1211-UV-2) ACC 080/100 (specbos 2511-UV / specbos 2501-UV)
Radiance	Blue Light Hazard	Aperture tube for 1.7 mrad, measurements only in combination with ACC 026 or ACC 081 and in a fixed distance of 200 mm	ACC 054 (specbos 1211-UV-2 & specbos 2511-UV / specbos 2501-UV)
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 (specbos 1211-UV-2) Included ACC 080 or separately as ACC 080/11 (specbos 2511-UV / specbos 2501-UV)
Radiance	Blue Light Hazard, Retina thermal	Mechanical elements for turning/ tilting the device to find the maximum emission of the source	ACC 025 (specbos 1211-UV-2 & specbos 2511-UV / specbos 2501-UV)
Irradiance	Eye UVA, Actinic UV, Eye IR, Skin thermal, Blue light small source	Diffusor for Irradiance measurement, spot size Ø8 mm	ACC 026 (specbos 1211-UV-2) ACC 081 (specbos 2511-UV / specbos 2501-UV)
Irradiance	Eye UVA, Actinic UV, Eye IR, Skin thermal	80° aperture for Diffusor ACC 026 or ACC 081	ACC 027 (specbos 1211-UV-2 & specbos 2511-UV / specbos 2501-UV)

Measuring mode: Radiance	Hazard category:  Blue Light Hazard	Accessory name: Beam shaping optics for 100 mrad and for 11 mrad with internal attenuation and additional external UVOD1.0 and UVOD2.0 filters	Part number: ACC 024 (specbos 1211-UV-2) ACC 080 (specbos 2511-UV / 2501-UV)
Measuring mode: Radiance	Hazard category:  Blue Light Hazard	Accessory name: Beam shaping optics for 100 mrad with internal attenuation and additional external UVOD1.0 and UVOD2.0 filters	Part number: ACC 024/100 (specbos 1211-UV-2) ACC 080/100 (specbos 2511-UV / 2501-UV)
Measuring mode: Radiance	Hazard category:  Blue Light Hazard	Accessory name: Aperture tube for 1.7 mrad, measurements only in combination with ACC 026 or ACC 081 and in a fixed distance of 200 mm	Part number: ACC 054 (specbos 1211-UV-2 & specbos 2511-UV / 2501-UV)
Measuring mode: Radiance	Hazard category:  Retina thermal	Accessory name: Beam shaping optics for 11 mrad with internal OD2 filter and additional external OD1 and OD2 filters	Part number: Included in ACC 024 or separately as ACC 024/11 (specbos 1211-UV-2) Included ACC 080 or separately as ACC 080/11 (specbos 2511-UV / 2501-UV)
Measuring mode: Radiance	Hazard category:  Blue Light Hazard, Retina thermal	Accessory name: Mechanical elements for turning/ tilting the device to find the maximum emission of the source	Part number: ACC 025 (specbos 1211-UV-2 & specbos 2511-UV / 2501-UV)
Measuring mode: Irradiance	Hazard category:  Eye UVA, Actinic UV, Eye IR, Skin thermal, Blue light small source	Accessory name: Diffusor for Irradiance measurement, spot size Ø8 mm	Part number: ACC 026 (specbos 1211-UV-2) ACC 081 (specbos 2511-UV / 2501-UV)
Measuring mode: Irradiance	Hazard category:  Eye UVA, Actinic UV, Eye IR, Skin thermal	Accessory name: 80° aperture for Diffusor ACC 026 or ACC 081	Part number: ACC 027 (specbos 1211-UV-2 specbos 2511-UV / 2501-UV)

 

JETI also offers

Accessory name	Part number
Additional filter cap for ACC 024, OD or bandpasstype	ACC 029UVODX.X (specbos 1211-UV-2 & 2511-UV / specbos 2501-UV)
Adapter UG11	ACC 021 UG11 (specbos 1211-UV-2)  ACC 082 UG11 (specbos 2511-UV / 2501-UV)

Accessory name: Additional filter cap for ACC 024, OD or bandpasstype	Part number:  ACC 029UVODX.X (specbos 1211-UV-2 & 2511-UV / specbos 2501-UV)
Accessory name:  Adapter UG11	Part number:  ACC 021 UG11 (specbos 1211-UV-2)  ACC 082 UG11 (specbos 2511-UV / 2501-UV)

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 such as specbos 2501-UV 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.

 

Download