Pulse Holiday Detector SPARK-1 is a device for detecting defects (thinning, microholes, cracks, etc.) in dielectric coatings on metals. The principle of operation of the device is based on the electrospark method.
A probe with electrode connected to one pole of the voltage source scans the surface of the tested object directly along the coating. The second pole of the voltage source from the ground connector is connected directly to the metal structure. The electronic unit fixes the gaps by voltage between the electrode and the conductive base.
Using the device is possible to do rapid nondestructive testing of the integrity of the coating of vessels (tanks, barrels, etc.), pipelines (inner and outer surfaces), ships and other structures with a coating thickness of up to 12 mm and more, with a discontinuity size of 0.1 mm.
Advantages:
- Reliability
- Small size and lightweight
- High capacity batteries
- Long battery life with enhanced battery
- Accurate digital voltage and sensitivity settings
- Indicator of batteries charge
- Sound defect signaling
| Measurement thickness range of tested coatings, no more | 12 mm |
| Measurement diameter range of the detected defects, not less | 0,1 mm^2 |
| Operation speed of electrode, not more | 25 cm/s |
| Output voltage | 0 – 40 kV |
| Output voltage resolution | 0.1 kV |
| Pulse frequency | 30 – 35 Hz |
| Batteries life, up to | 15 h |
| Weight of high-voltage transformer | 1,6 kg |
| Weight of electronic unit | 1,1 kg |
| Operating conditions | -40 to + 50 °C,Humidity 95% |
| Total weight with kit and package | 4 kg or 8kg (depends on the case) |