Home /Products/MPI Magnetic Particle Inspection/AC/DC Magnetic Particle Yoke – Portable NDT Flaw Detector for Surface & Near-Surface Defects

AC/DC Magnetic Particle Yoke – Portable NDT Flaw Detector for Surface & Near-Surface Defects

1 PIECE
MOQ
AC/DC Magnetic Particle Yoke – Portable NDT Flaw Detector for Surface & Near-Surface Defects
Features Gallery Product Description Chat Now
Features
Specifications
AC Lifting Force:: ≥45N (4.5kg) | DC Lifting Force: ≥177N (18kg)
Adjustable Pole Spacing:: 0-300mm (0-12")
Light Source:: UV 365nm + White LED Dual Mode
Continuous Operation:: 6-8 Hours
Weight:: 2.5kg (5.5lbs)
Compliance:: ASTM E1444 / E3024, ISO 9934-1, CE Certified
Highlight:

AC/DC magnetic particle yoke

,

portable NDT flaw detector

,

magnetic particle inspection tool
Basic Infomation
Place of Origin: CHINA
Brand Name: TESTECH
Certification: CE; ISO
Model Number: CDX-220 AC and DC
Payment & Shipping Terms
Packaging Details: In Carton
Delivery Time: within 5 days
Supply Ability: 500pcs
Product Description
AC/DC Magnetic Particle Yoke – Portable NDT Flaw Detector
Professional portable non-destructive testing equipment for detecting surface and near-surface defects in ferromagnetic materials.
Working Principle & Technology
AC Magnetic Yoke
  • Excitation Mode: Industrial frequency alternating current (AC 220V/50Hz)
  • Core Effect: Skin effect concentrates magnetic field on workpiece surface (0-2mm depth)
  • Advantage: Alternating magnetic field produces slight vibration for clearer defect indications
  • Lifting Force: ≥45N (approximately 4.5kg)
  • Adjustable Pole Distance: 10-220mm
DC Magnetic Yoke
  • Excitation Mode: Direct current (full-wave/half-wave rectified DC or battery DC)
  • Core Feature: Deep penetration performance reaching 0-6mm inside workpiece
  • Lifting Force: ≥177N (approximately 18kg)
  • Adjustable Pole Distance: Customizable for various applications
AC/DC Dual-purpose Magnetic Yoke
  • One-button AC/DC mode switching capability
  • Combines high surface sensitivity with deep subsurface detection
  • Built-in demagnetization function in AC mode
  • Ideal for complex inspection applications
Technical Comparison
Feature AC Magnetic Yoke DC Magnetic Yoke AC/DC Dual-purpose Yoke
Detection Depth Surface 0-2mm Subsurface 0-6mm 0-6mm by mode switch
Surface Sensitivity Extremely high Medium Extremely high in AC mode
Magnetic Field Alternating, skin effect, micro vibration Stable, deep penetration, no vibration Dual performance
Lifting Force ≥45N (4.5kg) ≥177N (18kg) Meets both standards
Demagnetization Built-in AC reverse demagnetization External demagnetizer needed Built-in AC demagnetization
Application Scope Welds, thin plates, surface cracks Thick plates, forgings, subsurface defects All-purpose universal use
Power Supply AC 220V/50Hz Battery / AC-DC rectifier AC 220V/50Hz
Structure & Specifications (Model CDX-220)
  • Magnetic Core: High-quality low-loss silicon steel sheet
  • Magnetic Pole Head: Flat / U type with 10-220mm adjustable distance
  • Housing: Full plastic insulated shell, impact-resistant design
  • Control System: Load control switch, indicator light, leakage-proof power cable
Main Parameters
Model: CDX-220
Rated Voltage: AC 220V 50Hz
Magnetization Mode: Alternating current magnetization
Flat Pole Lifting Force: ≥6kg (≥58.8N)
U-type Pole Sensitivity: Clear indications shown by No.2 magnetic field indicator
Adjustable Pole Distance: 10-220mm
Dimension: 170×150×50mm
Weight: 2.5kg
Application: Inspection of flat welds, fillet welds and special-shaped welds
Operation Specifications
  1. Apply lubricant to pin joints before use; inspect power cable, leakage protection device and switch performance
  2. Switch on after pole heads fully contact workpiece; turn off switch before separating equipment
  3. Recommended pole distance for AC yoke: 50-150mm; effective detection area is 50mm on both sides of pole connection line
  4. Regularly test lifting force with standard test block to meet standard requirements
  5. Demagnetization: Slowly move AC yoke back and forth over workpiece to finish demagnetization
Selection Guide
Choose AC Yoke: For surface cracks on welds, thin plates and castings requiring high sensitivity and convenient demagnetization
Choose DC Yoke: For subsurface defects on thick plates and forgings requiring deep magnetic penetration
Choose AC/DC Dual-purpose Yoke: For multi-scene complex inspection, providing both surface and subsurface flaw detection with one unit
Tag:

fluorescent mpi

magnetizing coils

magnetic flaw detection

Recommended Products
Get in touch with us
Contact Person : Linda
Tel : +86 13488765676
Characters Remaining(20/3000)
Get In Touch
Huihuang Guoji Building NO. 4, Shangdi 10 street Haididan district, Beijing City, CHINA
sales@testechgroup.com
+86 13488765676
About
Company Profile Factory Tour Quality Control Contact Us
Products
Non Destructive Testing EquipmentMPI Magnetic Particle InspectionCoating Thickness Gauge All Categories
Mail Us
Let us know your requirement. We will connect best products with you.
Sitemap │ Mobile Site │ Privacy Policy
China Good Quality Non Destructive Testing Equipment Supplier. © 2026 Testech Group Co., Ltd. All Rights Reserved.