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Pinhole/Holiday detector K2

Method of testing: High voltage technique.

Designation

Designed to locate all flaws (cracks, porosity, inadmissible thinning, etc.) in insulating coatings on conductive substrates by means of high voltage impulse. High voltage technique is ideal for inspecting pipelines.

Distinctive features

  • high safety due to pulsed operation mode;
  • safety switch incorporated in handle;
  • great kit of replaceable electrodes to control articles used for different purposes;
  • small dimensions and weight of a control unit and high-voltage transformer-holder ;
  • ability to control coatings on the concrete frame;
  • full range of electrodes available

Device version

Adjustable output voltage range

Maximum controlled thickness of insulating coatings

VT1

2...15kV

4 mm

VT2

5...30kV

7 mm

VT3

5...40kV

12 mm

Technical features

  • Device power source - built-in rechargeable battery.
  • Industrial for temperature range: from -20°C up to +45°.
  • Llow-temperature for temperature range: from -45°C up to +45°C.
  • Weight: - control unit weight:
    - 2.0 kg (with rechargeable battery),
    - high-voltage transformer-holder: VT1, VT2 - 1.3 kg, VT3 - 2.0 kg.
  • Operating time from charged battery: up to 6 hours.
  • Dimensions:
    - control unit: 220x155x75 mm;
    - high-voltage transformer-holder: VT1, VT2 - Ø50x350 mm, VT3- Ø110x350 mm.

    Delivery set

    Control unit, high-voltage transformer-holder VT, brash (fan) electrode, T-shaped electrode, extension rod, charging device, earth rod, magnet, earth clamp and earth lead (7,5 m), shoulder bag, case for storage and transportation.

    Device can include the following small-sized replaceable electrodes: T-shaped, crescent-shaped, brush-, fan, flat and rubber with gauging zone from 50 up to 400 mm.

    • Electrodes

    External pipe rolling spring electrodes

    Designation

    Used for testing the coatings on the outside of pipes. Available for pipes from 133 to 1500 mm diameter.







    Brash (fan) electrode

    Designation

    designed to define places of continuity violation on insulating coatings of pipes from 133 to 1500 mm diameter.





    Brash (hair) electrode

    Designation

    Designed to define places of continuity violation on insulating coatings.





    Internal pipe disk electrodes

    Designation

    Designed to define places of continuity violation of insulating coatings inside pipes.



    Crescent-shaped electrodes

    Designation

    Designed to define places of continuity violation on insulating coatings pipes from 25 to 1020 mm diameter.

    T-shaped electrodes

    Designation

    Designed to define places of continuity violation on insulating coatings of pipes with diameter from 25 to 1020 mm.





    Silicone rubber electrodes

    Designation

    Designed to define places of continuity violation on insulating coatings.

    • Straight silicone rubber electrodes
      Ideal for testing coatings on the large flat surfaces.








    • Round silicone rubber electrodes (with hole)
      Used to test coatings on the outside of small pipes (from 25 mm diameter).










    • Curved silicone rubber electrodes
      Used for testing the outside of pipes. Curved 180° for pipe sizes up to 800 mm , curved 90° for the larger sizes








    • Rubber ring electrodes
      Used for testing the outside of pipes.





    Special electrodes can sometimes be made to customers own specification.

    Pinhole/holiday detector

    1. Control unit Ground pin.
    2. High-voltage transformer-holder with brush (fan) electrode.
    3. High voltage lead.
    4. Earth rod.
    5. Magnet, earth clamp and earth lead.
    6. T-shaped electrode.
    7. Extension rod.
    8. Switch button

    NDT1 2009