Earth Leakage Leak Detector

Uses:

• Location of penetrations in waterproofing membranes
• Integrity proving of waterproofing membranes.

Applications:

Any flat or low-pitched structure using a non-conductive waterproofing membrane, whether exposed or ballasted (loose stone, paving slabs, landscaped) - see key features & benefits.

Operation:

A charged loop (freely laid around the area to be tested, with the area liberally wetted) carries a very low voltage pulse from a signal generator. Currents flowing to earth indicate the presence of penetrations in the waterproofing membrane, through which conductive moisture is moving.
A small, hand held, meter in contact with the wetted upper surface of the structure via two extended probes, measures the direction of the currents tracking across the upper surface towards the waterproofing membrane penetration(s).

Defects:

Any size of penetration through which moisture moves, down to 'invisible' pin-pricks, including defective seams. NB: this technique is not affected by ponded water lying beneath the waterproofing.