What is a thermography test used for in maintenance?

• A. To measure static pressure.
• B. To balance rotating equipment.
• C. To detect abnormal heat patterns indicating potential faults.
• D. To calibrate temperature sensors.

Answer: (C)

Thermography in maintenance centers on using infrared imaging to visualize surface temperatures and spot abnormal heat in equipment. By capturing heat patterns, technicians can see hotspots that indicate problems such as overloaded electrical connections, loose terminals, bearing wear, misalignment, or insulation breakdown. Those hotspots are often warning signs before a failure occurs, making thermography a powerful predictive tool.

This is why the best choice is about detecting abnormal heat patterns indicating potential faults. Static pressure measurement is a fluid or gas parameter, not something a thermography camera reads. Balancing rotating equipment relies on vibration analysis and correction with specialized equipment, while thermography might reveal heat issues but isn’t the process used to balance. Calibrating temperature sensors involves comparing readings to known references and adjusting instruments, which is a calibration task rather than a diagnostic heat-imaging test.