Knob Type Intelligent Frequency Conversion AC/DC Electric Spark Pinhole Detector for Coating Quality Inspection

The HUATEC HD-106A/B/C series knob-type intelligent frequency conversion electric spark pinhole detector utilizes advanced high-voltage detection technology for comprehensive inspection of coating integrity on conductive substrates.

• Detection of pinholes, cracks, and defects in non-conductive coatings on metal substrates
• Quality inspection of insulating and anticorrosive coatings on storage tanks, valves, and pipelines
• Plastic airtight joint testing and concrete coating layer air tightness tests
• Petrochemical pipeline corrosion inspection and enamel production quality control

• Military-grade gold-plated connectors for reliable performance
• Durable ABS casing with rugged construction
• Light touch waterproof membrane keyboard for easy operation
• AC/DC power supply with automatic switching capability
• Large capacity lithium-ion battery pack (energy efficient)
• Independent high-voltage safety button meeting international standards
• Intelligent frequency conversion technology suitable for humid environments
• Automatic probe recognition and self-calibration
• Digital display for battery voltage and output high voltage
• Acousto-optic alarm system for defect detection
• Precise voltage adjustment with high display accuracy
• Built-in overload protection

The detector applies pulse pressure to conductive substrates with insulating coatings. When defects like pinholes or cracks are present, the high voltage causes spark discharge at the gap, triggering the alarm circuit. This acousto-optic alarm system enables precise identification of coating quality issues.