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**MPT-1 Multi-functional Magnetic Particle Detector**
**Model No.:** MPT-1
**HS Code:** 903180
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The **MPT-1 Multi-functional Magnetic Particle Detector** is a versatile and portable device designed for efficient magnetic particle inspection in various industrial applications. It combines the advantages of both portable and mobile models, making it ideal for on-site testing. The unit features two outlets at the base: one for probe type A and another for probe type D, while AC and DC currents require the use of the O-type coil probe.
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### I. Brief Description
The **MPT-1** is a multi-purpose magnetic detector that offers portability along with the performance typically found in larger, more stationary units. It is equipped with multiple probe types to suit different inspection needs. This makes it an excellent choice for detecting surface and subsurface flaws in metal components, especially in environments where mobility and flexibility are essential.
The machine uses SCR (Silicon Controlled Rectifier) firing circuits, ensuring stable and reliable operation. All electronic components undergo rigorous analysis and aging treatment, contributing to its long service life and minimal failure rate. Additionally, the output voltage is safe, making it suitable for use in areas where high-voltage equipment is not allowed.
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### II. Selection of Functions
**(1) D Type Probe (Electromagnetic Yoke Probe)**
This probe is ideal for inspecting flat surfaces and external surfaces using both AC and DC currents. It provides a strong magnetic field, allowing for effective detection of cracks and other defects.
**(2) A Type Probe (Horseshoe Probe)**
Designed for inspecting fillet welds and large parts, this probe is suitable for both AC and DC current applications. It allows for localized testing of inner and outer angles, making it highly effective for complex geometries.
**(3) O Type Probe (Ring Coil)**
This probe generates a magnetic field of up to 180 Oe, making it perfect for detecting cracks in workpieces that can be positioned within the coil. It is particularly useful for identifying fatigue cracks that are perpendicular to the axial direction. The O-type probe also supports demagnetization of tools and workpieces that have been accidentally magnetized during production.
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### III. Main Technical Parameters
1. **D Probe**
- Polar Distance: 50–200 mm (adjustable)
- Lifting Capacity: AC ≥ 5 kg, DC ≥ 18 kg (without joint)
- Working Current: ≥ 8 A
- Working Voltage: AC = 38 V, DC = 10 V
- Weight: 2.5 kg
2. **A Probe**
- Pole Distance: 20–160 mm
- Lifting Capacity: AC ≥ 4.5 kg, DC ≥ 18 kg
- Power Supply: AC = 38 V, DC = 10 V
- Weight: 2.0 kg
3. **O Probe**
- Center Magnetic Field: 180 Oe
- Working Voltage: AC = 38 V, DC = 10 V
- Internal Diameter: 150 mm
- Weight: 2.8 kg
4. **Main Frame Specifications**
- Power Supply: 220V ± 10%, 50 Hz, 5 A
- Dimensions: 262 × 130 × 228 mm
- Weight: 6.0 kg
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### IV. Operation and Maintenance
Before operating the MPT-1, always read the user manual carefully to understand the structure and technical specifications of the device. Check that the power supply matches the requirements of the instrument and that all connections are secure. Only turn on the power after confirming everything is in order.
**Operating Steps:**
1. Connect the plug to the power socket and attach the detection head to the output socket.
2. Turn on the power to activate the indicator light and enable the control circuit.
3. Ensure good contact between the detection head and the workpiece, then press the magnetization switch. The work lamp will illuminate, and after releasing the switch, the power will cut off.
4. Always switch off the main power after use.
**Troubleshooting Tips:**
- If the indicator light does not turn on and the device does not function, there may be a short circuit or overload issue.
- If the light is on but the probe fails to magnetize, check the main or control circuit.
- If the device magnetizes without activating the switch, there may be a problem with the control circuit or silicon diode.
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### V. Notes
1. **Work Intervals:** To prevent overheating, ensure magnetization time is ≤ 3 seconds, followed by a 5-second rest period.
2. **Power Check:** Before use, confirm that the power supply meets the required standards. Incorrect voltage may damage the device.
3. **Contact Quality:** Maintain good contact between the probe tip and the workpiece for optimal magnetization.
4. **Avoid Overload:** Although the device has built-in protection, avoid unnecessary load to extend its lifespan.
5. **Overheating:** If parts become excessively hot, stop usage immediately and investigate the cause.
6. **Storage Conditions:** Store the device and Accessories in a clean, dry, non-corrosive environment.
7. **Safety Precautions:** Be cautious when repairing the device due to high voltage risks.
8. **Power Switch:** Do not change the power setting while the magnetization switch is engaged.
9. **Grounding:** Ensure the device case is properly grounded.
10. **Professional Repair:** If you cannot resolve the fault, return the device to our factory service center for assistance.
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