I would concur regarding the colour being too cold, but I have seen previous pictures where digital cameras also do not show just how bright something is glowing (from work in engine testing with exhausts at a precisely measured 900°C) so would not be too critical on that alone. The visible banding is however of greater concern - should be a pretty consistent colour all over, but it is not which must have implications for the accuracy of the thermography (and heat conduction through walls).
On 13 October 2014 04:40, a.ashfield <[email protected]> wrote: > Jed, > > As someone experienced with working at these kinds of temperatures in the > glass industry, it was obvious that the temperature shown in the image is > way below the reported operating temperature. > I don't know whether this is because it was warming up, or because many > consumer cameras don't show red hot things correctly. > > I am now somewhat dated, but I would have used a type S platinum > thermocouple, at the reported temperature, for the reactor control and > would have reported that reading as a useful check against the IR reading. > I also wonder what they used for the heating element as that would have > to be good for 1500C > >
