Testing Through Overburden
Low Voltage / Wet ELD Testing
Electronic Leak Detection through ‘Overburden’ adds additional complexities that can impact testing accuracy. This is because more elements and layers are added to your assembly.
Figure 1
In figure 1, you will see a traditional ELD testing process where the electricity is grounded allowing to ELD unit to provide accurate breach detection.
Figure 2
In figure 2, notice the extra layer of insulation that stops the electricity from grounding. This masks breaches unless a grounding medium is installed.
While testing through overburden provides insight into breaches and leak locations, accuracy may be impacted.
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