Originally Posted by firemanjb
The 250 and 500 degree temps were two different tests. The first was 250 at 20 minutes. We had the cameras attached to 5 ft. poles so that the cameras were at the same height. There was a FF assigned to each TIC. Another FF was assigned to monitor air temp (with air monitioring temp gauges) in the surrounding area of the cameras and to make sure that the temp stayed at 250 for the duration. Another FF was assigned to stoke the fire to keep it at that level.
The 500 degree test came later on after the cameras had a chance to cool down. We used the same method.
You are right about the refresh rate. You validate that its working correctly when it IS invisible to the naked eye. When it is NOT, is when you have the problem.
Hope this answers your questions.