DJ-6-B holiday detector

Product Description

â… .Overview:
Type DJ**-B holiday detector is used to detect the quality of metal anti-corrosion coating. This detector can detect different thickness of coatings, such as glass lining, glass reinforced plastic, epoxy coal tar, rubber lining and so on. The detector will emit bright sparks and with sound alarm when something is wrong with the coating, such as the emergence of pinhole, air bubbles, fissures and cracks. As powered by Ni-MH battery, and with small size and light in weight, it is especially suitable for field operation. The detector is the essential tool used for detecting the quality of metal anti-corrosion coating and can be used widely in many industries including chemical, petroleum, rubber and ceramic, due to its sophisticated design and stable & reliable performances.
â…¡. Specification:
  1.Applicable detection thickness: 0.*5 ~ *0mm(Also can provide detection of coating in *0mm above instruments according to user needs )
2. Output High-voltage: 0.6kv~*0kv (stepless and continually adjustable)
3. Direct indication of output high-voltage
4. Battery:*2V/***0mA
5. Power consumption: about 5W
6. Volume of main detector: **0×**0×*8 mm
7. Back light
8.Instantaneous boot, and automatic shutdown
9.3–digit LCD displays output voltage, and with all-touch panel
*0. Alarm: Dual alarm with earphone and buzzer
 
 
 
 
Ⅲ.  Detection Principle and Structure Description:
1. Detection principle:the spark leak detector performs detection of the anti-corrosion coating by exerting a certain amount of pulse high-voltage on the surfaces of anti-corrosion coatings of various conductive matrix, and the pulse high-voltage will form air gap and breakdown, and result in spark discharge, and send a pulse signal to alarm circuit to occur sound alarm when it pass through, if the anti-corrosion coating is much thin, metal leaks or there are leakage pinholes.
2.2. Structure description: this instrument consists of three parts including main detector, high-voltage probe and probe.
(1) Main detector: comprising integrated control circuit, sound alarm detector, etc.
(2) High- voltage probe: comprising high-voltage generator, outlet of high-voltage output, etc.                  
(3) Probe: Copper brush probe.