uv energy detector

[MXD]

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]

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]

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]

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