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Eddy Metal Auto Handheld Ultrasonic Flaw Detector NDT High Precision​

Products Introduction:

Flaw detection is the most commonly used technique among all the applications of industrial ultrasonic testing. Generally, sound waves of high frequency are reflected from flaws and generate clear echo patterns.

Portable instruments record and display these echo patterns. Ultrasonic testing is a safe testing method that is widely used in various service industries and production process, particularly in applications where welds and structural metals are used. The paper gives an overview of the theory, practice and application of ultrasonic flaw detection.

Application:

It is widely used in furnace, pressure vessel, space, electricity, petroleum, Chemistry, offshore oil, piping, military, shipbuilding, automobile, machinery, metallurgy, metal processing, steelwork, rail transportation, nuclear power, universities, etc.

Ultrasonic Transducers

1. Non Destructive Ultrasonic Thickness Measurement

2. Eddy Current Array Theory,pactice and application

3. Measuringwall thickness in Blow Molding

4. A transducer is an instrument that is capable of converting energy from one state to another. Ultrasonic transducers can transform electrical energy into sound energy and vice versa.

For ultrasonic flaw detection, standard transducers employ an active element that is made of either a polymer, composite, or piezoelectric ceramic. When an electrical pulse of high voltage is applied to this element, it vibrates through a particular spectrum of frequencies and produces sound waves. When an incoming sound wave vibrates this element, it produces an electrical pulse.

In flaw detection applications, five types of ultrasonic transducers are usually employed. They include contact transducers, immersion transducers, delay line transducers, angle beam transducers, and dual element transducers.

Advanced Ultrasonic Flaw Detectors

NDT ultrasonic flaw detectors are compact and portable instruments based on microprocessor. They are ideal for shop and field applications and display an ultrasonic waveform that is easily understood by a trained operator, who detects and classifies the flaws in test pieces. The series comprises a waveform display, an ultrasonic pulser/receiver, a data logging module, and software and hardware for signal capture and analysis. In order to optimize the performance of transducer, pulse amplitude, damping and shape can be controlled. Likewise, in order to signal-to-noise ratios, receiver gain and bandwidth can be modified.

Procedure of Ultrasonic Flaw Detection

A trained operator can identify particular echo patterns related to the echo response from representative flaws and good parts. This can be done by utilizing correct reference standards and accepted test procedures along with a good knowledge of sound wave propagation. Two calibration standards such as straight beam testing and angle beam testing are used in ultrasonic flaw detection. The latter technique is commonly used in weld inspection.

Competitive Advantages:

1. Focused&professional on ultrosonic testing field

2. Leading manufacturer in NDT equipments and accessories

3. Powerfull strength to offer full support for customized design and order

4. Have long-term cooperation with world-wide famous brands

5. Most of our products have got test reports from famous companies overseas

6. Offer full range ultrosonic solutions including Phased array flaw detectors

7. Strong technical support from drawing till aftersales services

Frequency, Velocity and Wavelength

Most ultrasonic flaw detection applications use frequencies between 500 KHz and 10 MHz per second. At frequencies in the megahertz range, sound energy travels easily via most common materials and liquids, but does not pass efficiently via air or similar gasses. Also, sound waves of different types travel at different rate of velocities.

Additionally, wavelength refers to the distance between two subsequent points in the wave cycle as it passes via a medium. It is related to velocity and frequency. In ultrasonic flaw detection and ultrasonic thickness gaging, the minimum limit of detection is one-half wavelength and the minimum measurable thickness is one wavelength, respectively.

Characters of NDT industry ultrasonic portable flaw detector for sale 

1. 10 points of DAC curve function,auto-generated evaluation line, sizing line,rejection line.

2. Peak record function,curve surface amend function,AVG function.

3. envelope function:record the profile of the echo peak track.

4. Auto gain function:auto set the amplitude of selected echo to the desired value.

5. Illustrated function for the