HD-120M High DC Voltage Online Porosity Holiday Detector
 
Principle
The detector generates a high DC voltage that is applied to the coating surface through a probe. The detector is connected to the substrate via the high voltage returned. When the probe is passed over a coating flaw, then the electrical circuit is completed and current flows from the probe to the substrate. As a result, audible and visual alarms are activated in the detector and a spark may be produced at the flaw.
Functions
On-Line Holiday Detector HD-120M is special testing equipment used to detect oil and gas pipelines, cables, enamel, metal tank, hull and other protective coatings flaws. It is professional and practical equipment.
 

 
Applications
1,oil and gas Anticorrosive factory, pipelining company, construction departments and qualitative inspect branch.
2,also use to gas company and water company pipeline inspecting
3,Shipbuilding, petrochemical plant, factory, machinery plant, enamel factory and bridge engineering anticorrosion-layer inspecting.
4,Pipeline transportation company anticorrosion-layer inspecting
Features
1,Microelectronic integrated high voltage generator, to overcome the electrostatic
2,Full keyboard operation, Improve performance
3,Automatic switch for High voltage and source voltage
4,Power on self test function
5,protective function when mistakenly entered
6,pinhole automatic counting
7,High voltage output can Continuous adjustment, auto-save the high voltage value
8,Display the actual test voltage, Ensure the safety of the coating
9,Three different poles to adapt different test
10,Modular structure, three-proofing design, long service life and reliability
 
 
Standard accessories