uv energy detector

MXD · Aug 21, 2001

I am looking for any advice on how to measure uv ( ultra-violet )energy in the 254 mm wavelenght energy ,whatever sensor used will degrade fairly rapidly I was told .
Is there any system that will be immune to the energy and is cost effective .My aplication is water purification .

DrDoug · Aug 21, 2001

If the level of light to be detected is extremely low, look into photomultipliers. Wavelength sensitivity is set by the materials used for the photocathode. The material will be a metal, and will thus not degrade under the influence of the UV light like plastic or semiconductor material will. If the amount of light to be detected is large, try using a thermocouple detector, again with a metallic coating for the actual absorption of the light quanta. There is a large selection for each type of detector, so you can optimize to your application.

nbucska · Aug 21, 2001

Since you have high energy concentration, the simplest would
be to use a regular simple vacuum UV photocell. I think metallic Zn would be the ideal cathode -- you could just measure the saturation current.

<nbucska@pcperipherals.com>

Jerre · Mar 4, 2002

UV enhanced photodiodes will work and are generally less expensive the most UV Pototubes. Check out Edmund Scientific.

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uv energy detector

MXD

Industrial

DrDoug

Aerospace

nbucska

Electrical

Jerre

Mechanical

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