Electric spark detector, also known as electric spark leak detector, electric spark anti-corrosion coating leak detector, anti-corrosion coating leak detector, etc. It is a specialized instrument used to detect the quality of metal anti-corrosion coatings. This instrument can be used to perform quality testing on coatings of different thicknesses, such as enamel glass, fiberglass, epoxy coal tar, and rubber lining. When there are quality issues with the anti-corrosion coating, such as pinholes, bubbles, and cracks, the instrument will emit bright electric sparks and sound an alarm.

1. Principle of electric spark detector leak detection: The electric spark leak detector applies a certain amount of pulse high voltage to the surface of various conductive substrate anti-corrosion layers. If the anti-corrosion layer is too thin, there may be metal leakage or gas leakage pinholes. When the pulse high voltage passes through, it forms an air gap breakdown and generates spark discharge. At the same time, it sends a pulse signal to the alarm circuit, causing the alarm to sound an alarm, thus achieving the purpose of detecting the anti-corrosion layer.

2. Classification of electric spark detectors

Electric spark detectors can be divided into two types based on their usage and geographical location: direct current spark detectors and alternating current spark detectors. The direct current spark detector is mainly suitable for open site use such as field construction operations and convenient and fast use. Mainly powered by lead-acid batteries or nickel hydrogen batteries The AC spark detector is mainly suitable for use in enclosed and easily powered places such as factories and workshops. Mainly powered by a 220V power supply. According to the different classifications of electric spark detectors, users can choose the appropriate instrument based on their site conditions, and configure different detection probes such as low-voltage or high-voltage probes according to the different detection ranges.

3. The CY-300 DC spark detector is a high-voltage instrument used for detecting the quality of metal anti-corrosion coatings. The DC spark leak detector can be used to inspect the quality of coatings with different thicknesses, such as enamel glass, fiberglass, epoxy coal tar, and rubber lining. When there are quality issues with the anti-corrosion coating, such as pinholes, bubbles, cracks, and fissures, the instrument will emit bright electric sparks and sound an alarm. Due to being powered by batteries, it is particularly suitable for field operations.

The CY-300 DC spark detector has advanced design, stability and reliability, and can be widely used in the chemical, petroleum, rubber, and enamel industries. It is an essential tool for detecting the quality of metal anti-corrosion coatings.

Technical parameters of CY-300 DC spark detector:

1) Applicable detection thickness:

0.2~10mm (instruments for detecting anti-corrosion coatings of 10mm or more can also be provided according to user needs)

2) Output high voltage: KQD-10 type 0.3kv~30kv (continuously adjustable)

KQD-10B type 0.3kv~15kv (continuously adjustable)

KQD-10C type 0.3kv~20kv (continuously adjustable)

3) Direct indication of high voltage output value

4) DC power supply: 12V (lithium battery)

5) Power consumption: approximately 6W

6) Host volume: 220 × 130 × 88 mm3

7) Instantaneous manual startup, manual power-off shutdown

8) 3-digit LCD display output voltage, full touch panel

Anticorrosive materials	Thickness of anti-corrosion layer (mm)	Detecting voltage (kV)	Remarks
	0.2
Epoxy coal	0.4	4~5KV	If there are standards, they should be implemented according to the standards
bitumen	0.6	Or formulate
	0.8
	2	11
petroleum	3	15
bitumen	5.5	18
	7	20
	9	24
polyethylene	According to: 3249TC=V company conversion
adhesive tape	V： Voltage TC: Thickness of anti-corrosion coating
	Execute according to the acceptance standard SY4014-92
glass lining	Determine the detection voltage based on experience, generally 8KV~20KV
other	According to the design department's testing voltage or
Anticorrosive materials	It depends on the insulation performance of the material itself