Overview
MET804 Portable eddy current Flaw detector is a digital electromagnetic detection equipment designed based on the principle of electromagnetic induction. It adopts advanced digital electronic technology, eddy current technology and microprocessor technology, and is equipped with a 6-inch or 8-inch TFT LCD touch display screen. It integrates high Sensitivity, multi-channel detection, and intelligent data analytics. It can expand the functions of magnetic memory and coating thickness measurement. It is widely used in nondestructive testing and scientific research and teaching in metal pipes, wires, automotive parts, bearings and other fields.
Features
1. Modular compact design, small size, light weight, easy to carry.
2. With a wide test frequency range of 10Hz-10MHz (specification parameters are 10Hz-16MHz), it can meet a variety of metal detection requirements.
3. Adopt color TFT-LCD liquid crystal touch display, menu design, easy to operate.
4. One-button multi-mode switching can quickly detect surface defects of metal workpieces.
5. Expandable magnetic memory, coating thickness measurement, conductivity measurement and other customized functions.
6. Equipped with a large-capacity rechargeable battery to support long-term outdoor operation, and can also be directly connected to a 220V power supply.
7. Compatible and flexible customization of various types of Probe (such as inner wear, outer wear, flat, etc.).
8. It can realize multi-channel and multi-frequency simultaneous online detection and limited mixing, with high detection efficiency and Sensitivity.
9. Using eddy current impedance plane and time base scanning display technology, the signal can be displayed in multiple windows on the same screen in real time.
10. Chinese and English version one-click switching, support automatic/manual amplitude and phase adjustment, fast digital analog electronic equilibrating.
11. With real-time alarm output, it supports a variety of alarm window modes and non-equal amplitude and asymmetric phase alarm area settings.
12. Adopt professional "digital filtering" to effectively suppress interference and ensure detection accuracy and stability.
13. Mass storage of detection programs and data, with full intelligent processing functions such as signal acquisition, reading, transmission, analysis, storage, playback and printout.
Principle
Eddy current detection is based on the principle of electromagnetic induction. The instrument loads an excitation signal into the Probe coil, and the alternating magnetic field generated by the coil will induce eddy current on the metal surface when it is close to the metal surface. The intensity, phase and distribution of eddy current are affected by the electrical conductivity of the specimen. The magnetic field generated by the eddy current itself will in turn change the impedance of the detection coil. When there are defects or material performance changes on the conductor surface or near the surface, the intensity and distribution of eddy current will change, which in turn will cause changes in the voltage and impedance of the detection coil. By detecting this change, the instrument indirectly determines the existence of defects or material performance changes.
Applications
High-speed nondestructive testing of various metal pipe rods and wires, quality control links in the manufacturing of metal parts such as bearings, rings, and auto parts, universities, scientific research and testing, etc
Standards
ASME、GB/T、YB、EN、JIG、API-5L、API-5CL、MH/T
Steps
The information does not provide specific operation steps.
Notice
• operating temperature: 0 ℃ - + 45 ℃.
Storage temperature: -20 ° C - + 50 ° C.
• relative humidity: ≤ 85%.
• The surrounding environment should have no strong vibration, no strong magnetic field, no corrosive medium and serious dust.
