What is the ideal electrode rate for measuring with high voltage holiday detectors?

The ideal electrode rate for measuring with high voltage holiday detectors is typically around 1 ft/second. This speed is considered optimal because it allows the detector's electrode to effectively travel along the surface being inspected without missing any potential disbonded areas or pinholes that may not be detected at either slower or much quicker speeds.

At this rate, the detector can provide a thorough assessment of the coating’s integrity, making it possible to identify defects accurately while maintaining a balance between speed and diagnostic capability. Moving too slowly might not capture all holiday signals effectively, while moving too quickly could lead to undetected flaws, as the electrode may not spend enough time in one location to register a potential holiday signal. Therefore, a measurement speed of 1 ft/second allows for a thorough and effective inspection process, ensuring that the integrity of the coating is appropriately evaluated.