Wet Sponge Multi-voltage Tester

This handy and effective instrument can detect pinholes in non-conductive coatings on conductive substrates (e.g. steel or concrete). The unit is earthed to the substrate. The wet sponge probe is then applied onto the test surface. When the wetting solution has formed a sufficient conductive path
through flaws or pinholes, the detection is confirmed by an audible and visual alarm.

Features
3 selectable voltages of 9 – 67.5 – 90 VDC, for detection
capacity up to 500 µm.
Easy & safe operation, non destructive method
Compact unit with removable sponge/probe assembly
Standard delivery: handle & sponge, 5 m earth cable, PP 3
battery, carry case.
more

High Voltage Holiday Detector

This apparatus detects pinholes, vacuholes or flaws in coatings. The conductive background is earthed to instrument and a high voltage is applied by moving a brush across the coating. This value is a related to the coating dielectric strength. When a flaw is detected, then the current will spark through it whilst a light flashes and audible alarm sounds. For maximum safety a high impedance supply will collapse to zero upon detection.

Features
Capacity 1-20 or 2-40 kV, for coatings from 100 µm to
respectively 8 mm or to 12 mm
Precision ± 1%, resolution 0.01 kV
Compact & light weight, easy to use, single or
continuous test
Adjustable output by means of a multiturn knob
Probe hand with safety switch
Standard delivery: probe handle, band brush probe,
shoulder/neck strap, 5 m earth cable, 2 x PP 3
(± 10 h. operation @ 10kV), carry case
more