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Do damp coatings or moist and humid conditions affect the operation of the PCWI Detector?

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Do damp coatings or moist and humid conditions affect the operation of the PCWI Detector?

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A7. As wet surfaces are generally conductive, this could affect the unit operationally. Atmospheric moisture is unlikely to do so. Some user preference exists for DC pulse units over direct DC units under wet operating conditions. This choice could be misleading, however, because the loss depends on the size of the electrode and the possible conductivity of the moisture. These circumstances could cause the test voltage to drop to such an extent that there is insufficient test voltage to locate faults.

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