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計測機器 Apogee Instruments MU-250のPDF オーナーズマニュアルをオンラインで閲覧またはダウンロードできます。Apogee Instruments MU-250 17 ページ。 Ultraviolet meter

INTRODUCTION

Ultraviolet (UV) radiation constitutes a portion of the electromagnetic spectrum from 100 to 400 nm and is further

subdivided into three wavelength ranges: UV-A (315 to 400 nm), UV-B (280 to 315 nm), and UV-C (100 to 280 nm).

Much of the UV-B and all of the UV-C wavelengths from the sun are absorbed by Earth's atmosphere. There are

also multiple artificial UV light sources available.

Most UV sensors designed for sunlight measurements are sensitive to UV radiation in the UV-A or UV-B ranges.

Apogee Instruments MU-200 series UV-A meters detect UV radiation from 300 to 400 nm and are calibrated in

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energy flux density units of watts per square meter (W m

, equal to Joules per second per square meter). The

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output can also be expressed in photon flux density units of micromoles per square meter per second (µmol m

Typical applications of UV meters include incoming UV radiation measurement in outdoor environments or in

laboratory use with artificial light sources (e.g., germicidal lamps).

Apogee Instruments MU-200 series UV-A meters are connected by cable to an anodized aluminum housing (MU-

250). Separate sensors consist of a photodiode and filter, and are potted solid with no internal air space. MU series

meters provide a real-time photon flux or energy flux (menu selectable) reading on the LCD display that

determines the UV radiation incident on a planar surface (does not have to be horizontal), where the radiation

emanates from all angles of a hemisphere. MU series meters include manual and automatic data logging features

for making spot-check measurements or calculating integrated daily total values.