Anyone using Bi Spectrual UV Cameras for substation, overhead line / distribution line inspection?

Note: The company I represent is a System Integrator for CEMs / Hg CEMs, also a distributor for instrumentation.

If I can be of anyones assistance please do not hesitate to ask.

Here is a copy of my line card,

http://i83.photobucket.com/albums/j297/tmullins23/linecard.jpg

How often does these cameras need to be calibrated? whats the maintenance schedule on the UV camera? thanks