'Function and use'
WN-68 series of spark leak detector is used to detect oil and gas pipelines, cables, enamel, metal tanks, hull and other metal surface corrosion insulation construction quality, aging, corrosion of micro-hole, air gap of a special testing equipment .
'Features'
● small size, light weight, reduce the detection of field work labor intensity.
● microelectronics integration of high-voltage generator to overcome the electrostatic phenomenon;
● use of digital display, to improve the output accuracy;
● High voltage and power supply voltage can be automatically converted;
● Fast intelligent charging, sufficient self-stop, no manual control;
● power supply using imported micro-switching power supply to improve performance;
● Power-on self-test function;
● anti-static, high-pressure mistaken input protection system;
● special protection, automatic adjustment function;
● Modular structure of the circuit, three anti-design, greatly improving the instrument life and reliability of field use.

'Main Specifications'
1, measuring range: A type: 0.03-3.5mm (to epoxy coal tar as the medium)

B type: 3.5-10.mm (with petroleum asphalt as the medium)

C type: 0.03-10.mm (with epoxy coal tar, petroleum pitch as the medium)
2, the output high voltage: A type: 0.5-15KV

Type B: 15-35KV

Type C: 0.5-35KV
3, display: digital display
4, high-pressure control system: analog digital regulator
5, DC power supply: 12v
6, power consumption: < 5w
7, alarm delay: 1-2 seconds
8, high-pressure gun: import high-voltage generator
9, Packing: aluminum packing box
10, the host size: 165mm × 155mm × 68mm11, the host weight: 1.5kg (with battery)

'Other Accessories'
Charger, high-voltage gloves, long cable, short connecting wire, connecting magnet, brush probe, grounding rod, random files

'Detection principle and method'
Metal surface insulation coating is too thin, leakage iron and leakage at the micro-hole resistance and air gap density is very small, when there is a high pressure through the formation of air gap breakdown spark discharge, the alarm circuit to generate a pulse signal, alarm The device issued a sound and light alarm, according to this principle to achieve the purpose of anti-corrosion coating.