Hampton Roads Automation

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Why Do Transformers Hum?

Why Do Transformers Hum?

Experienced electricians with a sense of humor will tell you, “It’s because they don’t know the words.” Recently, Swiss scientists have developed a more scientific theory on the reason for the hum associated with energized AC transformers.
Thermography and ASNT Certification

Thermography and ASNT Certification

In his commentary, ‘The 35 Undeniable Truths’, Rush Limbaugh states, “Words mean things.” This is especially true in thermography when it comes to one’s certification.
Measuring and Compensating for Reflected Temperature – Part 2

Measuring and Compensating for Reflected Temperature – Part 2

Non-contact thermometry provides a means for rapidly measuring object temperatures. To ensure measurement accuracy, all error sources must be considered and properly addressed. With this Tip, we discuss how to measure and compensate for Reflected Temperature using the Direct Method.
Measuring and Compensating for Reflected Temperature – Part 1

Measuring and Compensating for Reflected Temperature – Part 1

Non-contact thermometry provides a means for rapidly measuring object temperatures. To ensure measurement accuracy, all error sources must be considered and properly addressed. With this Tip, we discuss how to measure and compensate for Reflected Temperature using the Reflector Method.
Know Your Target

Know Your Target

When performing an infrared inspection, obtaining quality data relies on the use of proper equipment, thermographer training and knowledge of the system being inspected. It is imperative that a thermographer be familiar with the construction and operation of the object(s) to be imaged before the inspection begins.
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