Guenter, Your idea of Thermal Imaging is worthwhile, but is severly limited by available technologies.
For instance, I could not find a reasonably priced and easilty available Sight Glass pipe fitting that is rated for 1000 psi and 1000K; otherwise, I would immediately implement a camera monitoring system for my reactor. If you know of where I could find such a Sight Glass, or better still, a camera or Thermal Imager that can be placed "inside" the reactor; please let me know. Jojo
