AC/DC Magnetic Particle Yoke – MPI Yokes QualiMPI-X1

AC/DC Magnetic Particle Yoke – MPI Yokes QualiMPI-X1 features a compact design, efficient layout, lightweight build, and easy portability. It's ideal for detecting surface and near-surface defects in ferromagnetic materials across a range of steel structures, including boilers, pressure vessels, pipelines, and welded assemblies used in industries such as energy, metallurgy, petrochemicals, and manufacturing.

This unit can operate directly on AC power and may also be configured with optional AC or DC magnetization for added flexibility and performance. It is particularly well-suited for inspecting weld seams on ships, elevated steel structures, and internal sections of pressure vessels.

 

Instructions for Use

• Connect one end of the probe wire to the electromagnetic yoke, and the other end to a 110V outlet (or to a DC or AC magnetization power source). Ensure all connections are secure.
• Make sure both magnetic poles of the yoke are in firm contact with the workpiece. Spray the area with a magnetic suspension solution either alcohol-based, black oil-based, water-based, or fluorescent (a UV light is required for fluorescent suspension). Press the switch on the yoke to begin magnetization. Release the switch to stop.
• After completing the inspection, disconnect the yoke from the power source.
• For extended use, follow this operating cycle: magnetization should last no longer than 3 seconds, followed by a rest period of at least 5 seconds.
• Ensure the magnetic poles are in full contact with the surface before activating the switch for effective magnetization.
• Always release the switch before removing the yoke from the surface. Avoid operating the device without contact between the magnetic poles and the workpiece to prevent overheating and potential damage.

With its compact design, efficient layout, lightweight build, and easy portability, this AC/DC Magnetic Particle Yoke – MPI Yokes is ideal for identifying surface and near-surface defects in ferromagnetic materials. It is widely applicable across industries such as power generation, metallurgy, petrochemicals, and manufacturing, and is well-suited for use on boilers, pressure vessels, pipelines, and various welded structures.

The device can operate directly on AC power and also supports both AC and DC magnetization power sources for flexible, efficient use. It is particularly effective for inspecting welds on ship hulls, elevated steel structures, and the interior surfaces of pressure vessels.

AC/DC Magnetic Particle Yoke – MPI Yokes QualiMPI-X1 Features

Two Operating Modes
The probe can be connected directly to a 110V AC power source for alternating current testing. Battery operation is also available as an alternative.

Adjustable Pole Spacing
The probe accommodates a wide range of workpieces, with an adjustable pole distance from 0 mm up to 200 mm for flexible and accurate flaw detection.

Three Power Supply Options
Compatible with single-phase AC power, AC magnetization power, and DC magnetization power. Users can freely select the power source that best suits their inspection needs.

Characteristics

Compact and Portable
Small size and lightweight design make it easy to carry. The magnetic yoke plugs directly into a standard power outlet—no control unit required.

Durable and Safe
Well-sealed with strong insulation, offering added safety during wet inspections.

Ergonomic Design
Comfortable grip supports extended use without causing wrist strain.

Reliable Performance
Designed for continuous operation without overheating, enabling uninterrupted flaw detection.

Flexible Lighting Options
Available with multiple lighting modes: no lighting, daylight, or UV light.

Enhanced Visibility
Equipped with a large light window, ideal for low-light environments.

Upgradeable Power Source
Compatible with optional AC/DC battery packs for added mobility.

AC/DC Magnetic Particle Yoke – MPI Yokes QualiMPI-X1 Technical Specifications

Model		QualiMPI-X1	QualiMPI-X1（W）	QualiMPI-X1（UV）
Voltage		110V
Temperature		-10～+40℃
Relative humidity		<80% noncondensing
Overall sensitivity		Manual grooving of A1 15/100 standard test piece is clearly displayed
AC current		AC2.2A
Magnetic field intensity		＞2kA/m	＞2kA/m	＞2kA/m
Duty cycle		＞50% Maximum excitation time 90 seconds
Lighting method		X	White light	UV light
Illumination/irradiance		X	≥2320Lux	≥5220uw/cm2
Light source window		X	82*22mm	82*22mm
Irradiation scope		X	230*110mm	230*110mm
Magnetic pole distance		0~220mm
Pole size		22*22mm
Power cord		3M
Pulling force	(AC)	≥7.1kg (69N)Voltage 220V (110V is also available), one movable joint
	(DC)	≥22.2kg (216N) (with DC battery pack)
Dimension		230mm x 125mm x 45mm
Weight		2.3kg

Standard Configuration

QualiMPI-X1	QualiMPI-X1（W）	QualiMPI-X1（UV）
AC/DC Magnetic Particle Yoke – MPI Yokes Power cord Instrument box Instructions, certificates and others	AC/DC Magnetic Particle Yoke – MPI Yokes (daylight) Power cord Instrument box Instructions, certificates and others	AC/DC Magnetic Particle Yoke – MPI Yokes (UV light) Power cord Instrument box Instructions, certificates and others

 

Optional components

 Bevel 1A                         Bevel 1B

A1 standard test piece       Pulling test piece 45N/118N/177N    Black oil suspension/contrast agent/fluorescent magnetic suspension

Belt, magnetic suspension backpack, magnetic yoke backpack, power backpack

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