top of page
NDT Nordic Logo.png

Magnet-Coil/Coil

Magnet-Coil/Coil

Western Instruments' line of magnetizing and demagnetizing coils are designed for use in magnetic particle inspection (MPI/MT) and other magnetizing tasks in NDT. The product range includes several series covering everything from economical AC coils to heavy duty DC equipment for pre-weld demagnetization and downhole pipe certification. All coils are designed and manufactured in Edmonton, Alberta, Canada.


Key features and benefits

  • Several series adapted to different needs:
    WA Series – economical AC coil for basic inspection.
    WP series – medium duty AC/DC coils with pulsed DC capability and reversible polarities.
    WS series – powerful pulsating DC coils designed for drill pipes and high demands.
    WD/WDV series – heavy duty coils for demagnetization (pre-weld, pipelines) with full wave DC and AC selection.

  • Flexible connection and upgrade options such as variable DC, reversible polarization and foot switch for operation.

  • Designed for use in the field, inspection lines and industrial applications with demands for mobility and high performance.

  • Production in Canada ensures quality control and delivery to the global market.


Technical specifications

  • WA Series: ID sizes 8″ (203 mm), 10″ (254 mm), 12″ (305 mm), 14″ (356 mm). AC output over 4,000 Ampere turns at 115 V/60Hz, over 5,000 at 230V/50Hz. Weight e.g. WA-8 ≈6.8 kg.

  • WP Series: Same ID sizes as above, versions: AC-only, AC/DC (D-), AC/variable DC (DV-), AC/variable reversible DC (DVR-). DC outputs up to ~7,000 Ampere turns for certain models.

  • WD Series: Offered in large diameters (e.g. 8 5/8″ to 60″ / 219 mm to 1,524 mm) with full wave DC and AC options. Use for pre-weld demagnetization of pipes and structures.


Areas of application

  • Magnetic particle inspection (MPI/MT) of welds, pipes, shafts and components where magnetization is required to indicate defects.

  • Demagnetization of pipelines, flange connections, drilling equipment and other process equipment where residual magnetic fields must be removed before further work.

  • Field inspection and maintenance on oil & gas installations, pipelines, factories and the aerospace industry where a mobile magnetization solution is required.

  • Production lines and inspection workshops that require high repeatability and performance in magnetizing and demagnetizing tasks.

bottom of page