High Voltage Pinhole Detector

The high-voltage pinhole detector creates an electric field on the coating surface by applying high-voltage direct current. When there are pinhole defects in the coating, breakdown discharge occurs. It is used to detect the continuity of anti-corrosion coatings on metal substrates and verify coating integrity in industrial protection fields such as pipelines and storage tanks.
Selection
When selecting, consider that the detection voltage range must cover the coating thickness requirements, the electrode type should match flat or curved surface detection, safety features include overload protection and grounding alarms, environmental adaptability meets on-site explosion-proof ratings, device weight affects portability, and battery life ensures sufficient field operation time.
type
Coated Film thickness
Voltage range

Terms

Standards

Instruments

0.6KV~ 31.5KV full scale high voltage output, voltage accuracy +/- (0.1KV + 3% reading), intelligent control to ensure that the display voltage is the test voltage, pulse discharge to reduce coating secondary damage, sound and light alarm and leakage point counting function.

$ 622.00

The integrated high voltage generator is used to overcome static electricity, the performance is stable and reliable, the output high voltage 2~ 30KV stepless continuous adjustable, the detection Film thickness range 0.05-15 mm, nickel-metal hydride battery power supply is suitable for field operations.

$ 583.00

Glass-lined, FRP, epoxy coal asphalt coatings of different thicknesses can be mass tested by high voltage detection technology. When the coatings have defects such as pinholing and bubbles, the instrument will emit bright sparks and sound and light alarms.

$ 1230.00

Adopting high voltage detection technology, it can sensitively find defects such as coating pinholing and bubbles, equipped with sound and light alarm system, and powered by nickel battery, which is convenient for field operation.

$ 590.00

Using high voltage DC technology, the maximum detection thickness is 36 mm, the voltage range is 0-30kV fully adjustable, with current limit protective coating and Sensitivity adjustment function, suitable for metallization or slightly wet coating detection.

$ 5992.00

Measurement range up to 1000GΩ, support polarization index test and AC/DC voltage detection, with backlight display and high voltage probe.

$ 232.00

0.6KV~ 31.5KV full scale high voltage output, voltage Accuracy +/- (0.1KV + 3% reading), intelligent control automatically match Coating thickness, pulse discharge to reduce secondary damage, prolong battery life.

$ 1041.00

The use of high voltage DC technology can detect 36mm thick coatings, with current limiting function to avoid coating damage, Sensitivity adjustment to adapt to metallization or slightly wet coatings, providing stability testing current and overcharge protection.

$ 6782.00

With 500V to 5000V four output voltage, Measurement range covers 0-1000GΩ, support polarization index test and AC/DC voltage detection, maximum short circuit current 1.3mA to ensure safe operation.

$ 232.00

With automatic self-inspection certificate voltage Adjustment, detection voltage 9V to 90V adjustable, thickness range 0~ 500μm, meet IP65 Protection Rating and weight only 180 grams easy to carry.

$ 1464.00

Measurement range of up to 99.9GΩ, support polarization index test and AC/DC voltage detection, with backlit display and overload protection.

$ 186.00

Pulse high voltage technology, detection thickness range 0.05-10 mm, output high voltage 0.6-30 KV stepless adjustable, with sound and light double alarm and automatic shutdown function, nickel-metal hydride battery power supply easy to carry.

$ 590.00

Suitable for high voltage molding sand test, compression stroke 2.50mm, load 1500g, with average calculation and MAX Maximum latch function, support USB and Bluetooth data communication.

$ 328.00

With 5000V output voltage and 1000GΩ Measurement range, it supports polarization index testing and USB data transmission, and the backlit display is easy to read measurement results in dark environments.

$ 310.00

Wide range, high resolution, with the measurement of DC voltage, AC voltage, absorption ratio and polarization index function, strong anti-interference ability, the use of shockproof, dustproof and moisture-proof structure.

$ 477.00

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