【Function
and Purpose】
Shengli
SL-186 online electrical spark detector is developed based on the Canadian
standard for online electrical spark detectors combing the practical conditions
in China, which is the dedicated equipment for coating quality detection of
metal pipelines during their production.
【Characteristics】
1.
Introduction of such foreign new technologies as microelectronic high-voltage
generator and PC control
2.
Adoption of 220V AC power supply, safe and reliable
3.
Low power consumption, small volume, less weight
4.
Easy, audible, visible, and convenient in operation, providing a fastest and
most reliable method for online detection of pipe coatings;
5.
Having solved the problem encountered by domestic counterparts which have
high-voltage static electricity, extremely safe for operators.
【Primary
Technical Parameters】
1.
Measuring range: 0.03-3.50mm (type A); 3.50-10.0mm (type B)
2.
High-voltage output: 0.5-15.0KV（type A）; 15.0-36.0KV（type
B）
3.
AC power supply: 220V±15%
4.
Power consumption: ＜5W
5.
Alarm delay: 1-2 seconds
6.
Main frame volume: 220×100×250mm3
7.
Main frame weight: 2.5kg
【Detection
Principle and Methodology】
The
resistance and the air gap density are very small at under coating,
metal-exposed, and leakage micropores on the anti-corrosive and insulative
coating of metal pipes, so when the high voltage passes through, the gap
breakdown forms to generate spark discharge, giving out a pulse signal to the
alarm circuit, and the alarm sounds with light. That’s how the online spark
detector conducts leakage detection on the anti-corrosive coating.
