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Related Experiment Videos

A meter for ultraviolet dose and irradiance.

M G Pepper, P J Mountford

    Physics in Medicine and Biology
    |March 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    A new portable meter accurately measures ultraviolet irradiance and dose using various detectors. This battery-powered device offers precise readings for scientific applications.

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    Area of Science:

    • Optoelectronics and Measurement Science
    • Applied Physics and Instrumentation

    Background:

    • Accurate measurement of ultraviolet (UV) irradiance is crucial for various scientific and industrial applications.
    • Existing monitoring devices may lack portability, flexibility, or precision.
    • The need for a versatile and reliable UV irradiance and dose measurement tool is evident.

    Purpose of the Study:

    • To develop a compact, portable, and battery-powered meter for monitoring and integrating UV irradiance.
    • To design a meter capable of accepting signals from multiple detector types, including thermopile and solid-state (GaAsP) diodes.
    • To achieve a high level of measurement accuracy for UV irradiance and dose.

    Main Methods:

    • Development of a portable, battery-operated UV irradiance meter.

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  • Integration of a variable scale factor to accommodate diverse detector sensitivities.
  • Implementation of manual and preset time operation modes.
  • Inclusion of outputs for computer or chart recorder interfacing.

    • Main Results:

    • The meter measures UV irradiance in the range of 100 microW cm-2 to 100 mW cm-2.
    • The measurable UV dose range is from 200 mJ cm-2 to 200 J cm-2.
    • The instrument displays irradiance, dose, and elapsed time.
    • An overall measurement uncertainty of approximately 1% was achieved.

    Conclusions:

    • A versatile and accurate portable UV irradiance and dose meter has been successfully developed.
    • The meter's design accommodates different detectors and offers flexible operation.
    • The low measurement uncertainty ensures reliable data collection for UV monitoring applications.