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MIKASE LABORATORY - PT MITRA KATIGA SEJAHTERA / AGENT DAN DISTRIBUTOR ALAT UJI KUALITAS UDARA, AIR, CUACA , KEBISINGAN SERTA GETARAN

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    RADIOMETRIC PROBE....

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    Origin:
    Italy
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    Specification :

    The LP UVB 02 radiometer measures the global irradiance in the UVB spectral region on a plane surface ( Watt/ m2) . In particular, the instrument’ s spectral sensitivity is centered at 305nm with a 5nm band width ( FWHM) . The global irradiance is the sum of the direct solar irradiance and the sky diffuse irradiance on a
    surface parallel to the ground. In contrast to the visible spectrum where the direct
    component prevails over the diffuse component, in the UVB spectral region light is strongly diffused by atmosphere and thus the two components are equivalent.
    Therefore it is of primary importance for the instrument to be capable of measure
    both components accurately.
    The LP UVB 02 probe is typically used in the following sectors:
    • Monitoring the ozone layer. Indeed, the radiation around 295nm– 315nm is strongly absorbed by ozone located in the stratosphere, therefore each small variation of the ozone layer corresponds to an increase or decrease of the UV
    radiation reaching the ground.
    • Effects of UVB radiation ( the most harmful to human health) on living beings.
    • UVB radiation measurement in work spaces.
    The LP UVB 02 radiometer needs power to function. Power is required to amplify
    the weak signal generated by the photodiode. Indeed, the radiometer is a current/ voltage amplifier ( transimpedance amplifier) . This choice measures sun-produced
    UVB irradiance. Indeed, the need to use sophisticated filters ( partially attenuating the signal concerned) and the relatively weak sun-produced irradiation in this spectral area, in the best case, make the photodiode-generated current in the order of hundreds of pAmpere. So it is not possible to use cable meters or tens of meters long as the noise might be greater than the signal itself. Therefore the signal must be amplified.
    LP UVB 02 is robust and was manufactured to operate for long periods without maintenance ( if powered correctly) . This characteristic makes it suitable for location
    in meteorological stations.
    A platinum-resistance thermometer ( Pt100) is inserted inside the LP UVB 02 in
    order to control its temperature. Internal temperature must remain within its functioning range, otherwise measurements could be affected by higher systematic
    errors than those asserted in the manual. Exposure to temperature higher than
    + 60° C can alter the interferential-filters spectral characteristics.

    Technical characteristics
    UV MEASUREMENT
    Typical sensitivity: H5V/ ( W/ m2)
    Response time:

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