Most FLIR's read to below 0° and above 400°F.
I was told by 2 people who have various IR cameras that 32-212°F is the range that the readings are accurate in.
I feel this is an inexpensive way to learn about the process before investing thousands. One of the responders to my question about the range said his brothers most expensive unit was $45,000.00, his about 12K. He has also preordered the 1.
Tom