Catalog excerpts
Optical radiation Digital measuring head for erythema effective UV radiation (UVE) FLD7 03-UVE with ALMEMO® D7-connector Monitoring of UVE-radiation hazardous for human skin. Mobile measurements in meteorological, medical and biological applications. For connection to current measuring instruments ALMEMO® V7 : ALMEMO® 500, 710, 809, 202, 204 ALMEMO ® UVE-measuring head Erythema effective UV radiation The natural UV radiation oft he sun or the UV radiation of artificial sources has different effects to human skin dependant on the wavelength range. • The long-wave UV radiation (more than 313 nm, UVA) tans the skin and supports the human immune system. • The short-wave UV radiation (less than 313 nm, UVB/UVE) may cause irreversable damage. In the recommendation of the CIE ( Commission Internationale de l‘Eclairage) all spectral effect functions which can have a negative effect on the human skin are summarized. This recommendation is described in the DIN 5050 resp. ISO/CIE 17166 and valuated as a directive. UVE-measuring head FLD7 03-UVE The measuring head records the erythema effective UV radiation. The spectral sensitivity of the measuring head complies with the standards DIN 5050 and ISO/CIE 17166 and the Ordinance on Protection against the Harmful Effects of Artificial Ultraviolet Radiation (UV-Schutz-Verordnung - UVSV, published in the Federal Law Gazette 2011 Part I No. 37). The measurement results provide direct information about medically and biologically relevant correlations in this radiation range. DIN 5050 specifies four different skin types: Skin type I to IV. The UV Protection Ordinance - UVSV extends by two further skin types: skin type V and VI. The guideline for these six skin types are taken into account in the calculation of the various parameters. The measuring head is used in areas of medical and biological research, for the measurement of UV radiation equipment (for cosmetic purposes, medical treatments or other human applications), in weather information and forecasting systems, in climate research and for general popula- tion information.. A popular measure of „sunburn sensitivity“ is the UV index „UVI“, which is determined by the German Weather Service. The measuring head FLD7 03-UVE has a black anodized aluminum housing. The measurement is cos - corrected. The measuring head is suitable for measurements in dry environments. Digital measuring head with ALMEMO® D7-connector The measuring head works with its own AD converter. Extension cables and the ALMEMO® measuring instrument/data logger have no influence on the accuracy of the measurement..From the measured irradiance, all relevant measured variables are calculated and output to the ALMEMO® instrument. Different measuring channels can be selected and the measured variables can be displayed : • UV-index: relative irradiance related to 25 mW/m² • UVE irradiance (erythema-effective) in mW/m². • Dose (erythema effective irradiation) in J/m²: sum of irradiance over the irradiation period (energy). • Relative minimum erythema-effective dose (MED): Dose related to 1 MED (= erythema-effective threshold irradiation) of the set skin type according to DIN 5050 and UVSV. Example: 1 MED for skin type 2 (light-skinned European skin type) = 250 J/m². • Remaining time of irradiation in minutes until the dose 1 MED of the selected skin type is reached. • Current, predicted maximum irradiation time in minutes until the dose 1 MED of the selected skin type is reached. • Relative standard erythema effective dose (SED): Dose related to 1 SED (100 mW/m²) according to ISO 17166.
Open the catalog to page 1Optical radiation ALMEMO® D7 Technische Daten Measuring range UVE: Sensor system: Spectral sensitivity: Erythema effective spectral range: 250 … 298 ... 328 nm Max. spectral sensitivity: 295 nm Diffuser: Absolute error: Nominal temperature: Operating temperature: Dimensions: diameter height Weight (without cable) ALMEMO® connecting cable: fixed attached cable, 1,5 m, with ALMEMO® D7-connector ALMEMO® D7 connector Refresh rate: Settling time: 3 s (for data logger operation in sleep mode a sleep delay of 3 s has to be programmed) Power supply voltage: from 6 V from ALMEMO® instrument...
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