Not long ago, infrared cameras were 30-pound, cart-mounted
affairs that required hourly infusions of liquid nitrogen to keep
them running and a good imagination to interpret the resulting
images. Prices exceeded $60,000. How quickly all that has
In recent years, infrared has become widely used as a fast,
reliable, nondestructive testing technique for diagnostic and
quality-control inspections, especially moisture detection. Unlike
other moisture-detection techniques, 100 percent of a roof
typically can be inspected with infrared devices.
Since the introduction of infrared cameras, prices have dropped
significantly; image quality has improved; and cameras—now
weighing about 2 pounds—finally are being designed with end
users in mind. As a result, infrared thermography has become a
popular tool for roof system maintenance and building
However, the confusion many inevitably will face when trying to
make an intelligent decision about investments in infrared
technology still can pose a problem. With current prices ranging
from $6,000 to $60,000, it is important to carefully evaluate the
investment and the return you want to make. Fortunately, you do not
necessarily need a top-of-the-line system to...
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