Name: Corona 40 – Flat Roof Leak Detector Kit
Brand: NDT1 KRAFT

Description

The Corona 40 Flat Roof Leak Detector Kit is designed for non-destructive detection of leaks and discontinuities in waterproofing membranes and dielectric roof coatings installed over conductive substrates such as concrete, steel or aluminium foil.

The high-voltage dry test method detects pinholes, cracks, punctures and other defects without the need to wet the membrane. This makes the system suitable for rapid inspection of large roof areas both during installation and as part of maintenance or quality-control procedures.

A dedicated electrode system provides a test width of up to 1 m, allowing efficient inspection of flat surfaces, while interchangeable electrodes can be used for edges, joints and complex-shaped areas. The system is suitable for flat roofs, waterproofing systems and other large-area dielectric membranes applied over conductive substrates.

Features

Specialized solution for flat-roof and waterproofing inspection
Dry high-voltage test method — no wetting of the membrane required
Detection of pinholes, cracks, punctures, leaks and other membrane discontinuities
Inspection width up to 1 meter in a single pass
Fast inspection of large roof areas
Suitable for waterproofing inspection on concrete, steel and other conductive substrates
Adjustable test voltage from 4 to 40 kV
High stability of voltage on electrode
Inspection of dielectric membranes and coatings up to 25 mm thick
Adjustable sensitivity
Grounding capability at different locations on the roof
Interchangeable electrodes for large flat areas, edges, joints and complex geometries
Modular T-shaped tubular electrode with adjustable inspection width
High safety due to pulsed operation mode
Two rechargeable batteries supplied as standard
Long grounding wire — up to 50 m in the standard kit
Small dimensions and light weight

Basic technical characteristics

Technical data	Corona 40 – Flat roof leak detector kit	Units
coating thickness range	0.5-25	mm
voltage on electrode adjustment range	4-40	kV
type of indication of voltage amplitude on electrode	digital (3-digit)
output voltage adjustment resolution	0.1	kV
Device power source — built-in rechargeable battery:	industrial for temperature range: -20 °C…+45 °C
Device power source — built-in rechargeable battery:	low-temperature for temperature range: -45 °C…+45 °C
inspection voltage stability	5	%
Weight:	control unit (with battery): 1.5 kg
Weight:	high-voltage transformer-holder VT-40 – 1.3 kg
Operating time from charged battery	up to 8 hours
Overall dimensions:	control unit: 205×165×56
Overall dimensions:	high-voltage transformer-holder VT-40 – Ø55×380 mm

Delivery set

control unit
high-voltage transformer-holder VT-40
brush (fan) electrode and 1 meter T-shaped electrode
two extension rods
charging device
two rechargeable lead-acid batteries
up to 50 m ground wire with magnet and crocodile clip
operating manual
case for control unit
case for storage and transportation

The device can be completed with additional rechargeable batteries and the following replaceable electrodes:

— T-shaped electrode of small dimensions, brush (fan) electrode, flat rubber and hair electrodes with inspection zone from 50 to 400 mm

Electrodes

Corona 40 - Flat roof leak detector kit – view 5

Special electrodes can be made according to customer’s own specification.

Catalogue