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Tear-Duct Test Defined---And Why it is Important for Your Thermal Camera

The “tear-duct test” is a recommended test to verify the calibration of your thermal camera. The suggestion follows that before the thermographer goes out to the factory floor to do a thermal scan (or house to do an energy audit/scan), he/she would turn the infrared camera on (also validating that the camera works and batteries […]

What to Inspect in Electrical Substations and Lines

While many know how critical it is to identify heat-related electrical problems prior to failure, too often they don’t inspect some of the most important equipment in a substation. That is what I’d like to cover this week: what to inspect and what might you find.

This OCB bushing shows a classic […]

The Basic Physics Behind Thermography

Understanding these basics will make you a better thermographer!

The first law of thermodynamics is a scientific law that states when mechanical work is transformed into heat, or when heat is transformed into work, the amount of work and heat are always equivalent. An advantage for thermographers is the fact that a byproduct of nearly all […]

Thermography Terms Explained: FOV, IFOV, IFOVmeasurement

Let’s define a few important acronyms that I am sure everyone has seen on infrared camera specification sheets, but may not understand very well:   FOV, IFOV, and IFOVmeasurement.

These are not just any acronyms—these describe very important performance specifications of your thermal imager.  It is important to understand not only what they mean, but what impact […]