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SL-86 series pinhole detector is used to detect the metal surface insulation coating can not see the naked eye pinhole, air gap, crack and other defects of the instrument, metal storage tanks, pipes, enamel and other metal surface coating It is widely used in oil and gas field anticorrosion insulation plant, oil construction company pipeline installation team, oil storage tank construction department of the anti-corrosion quality supervision and inspection of the instrument, the instrument is the ideal instrument, when the pinhole, the instrument produces spark and sound alarm, and record the defect point. The quality of technical supervision departments; gas companies, water companies metal pipe anti-corrosion quality testing; shipyards, petrochemical plants, military plants, machinery plants, enamel factory and large bridge construction unit coating anti-corrosion quality testing; pipeline transportation enterprises, Anti - aging layer detection and overhaul coating quality testing.

'Features'
1, the use of foreign high-voltage integrated micro-electronics generator to overcome the electrostatic phenomenon.
2, the use of planar design, full keyboard operation, improve the performance of the instrument;
3, pinhole automatic recording;
4, high-voltage output can be continuously adjusted according to need, and can automatically store the output high voltage;
5, the figures show the actual test voltage of high-voltage probe, to ensure the safety of coating;
6, the configuration of three kinds of exploration, can adapt to a variety of different occasions of detection;
7, the voltage is low, the automatic shutdown, improve the battery life;
8, fast intelligent charging, sufficient self-stop, without manual control;
9, the instrument line modular structure, three anti-design, thus greatly improving the instrument life and reliability of field use.

'Main Specifications'
1, measuring range: A type: 0.03-3.50mm (epoxy coal tar pitch) B type: 3.50-10.0mm (petroleum asphalt)
2, the output voltage: A type: 0.5-15.0KV B type: 15.0-35.0KV
3, the AC supply voltage: 220V ± 15%
4, the machine DC voltage: 9.6V
5, DC power consumption: < 5W

6, alarm delay: 1-2 seconds
7, the host volume: 235 × 210 × 65mm
8, the host weight: 3Kg (including the battery)
9, high-pressure gun volume: 370mm × φ40mm

'Detection principle and method'
Is a surface insulation coating pinhole, 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, to the alarm circuit and the counting circuit to produce a pulse Signal, the alarm sound and light alarm, the counter recorded once, according to this principle to achieve the purpose of coating and coating layer of defects in the coating count.