When choose and buy ultrasonic flaw detector which a few respects should notice?Among the many types of flaw detector, ultrasonic flaw detector is the most popular. Because ultrasonic flaw detector can be convenient, fast, accurate, no damage to the work piece internal defects of the detection, positioning, evaluation and diagnosis. It can be used in both engineering field and laboratory. Therefore, ultrasonic flaw detector has been applied in power, chemical, petroleum, aerospace, aviation and other industries.

Because ultrasonic flaw detector is a kind of very professional instrument, not professional personnel, can not understand the pros and cons of this instrument, so many counterfeiters drill holes. Some domestic manufacturers make use of the digital ultrasonic flaw detection can be false characteristics, large-scale production and sales of substandard products. If you do not have professional testing tools, then the following ultrasonic flaw detector purchase guide can help you to identify the authenticity:

1, the price is very low, should understand the ultrasonic flaw detector market price, see if it is the right price, do not blindly covet cheap, the so-called is cheap without good goods.

2. Check whether the vertical linearity is qualified: adjust the gain to the maximum without connecting the probe. The waveform on the screen cannot exceed 10% of the screen.

3. There are still some indicators that need special test blocks. It is suggested that the new instrument should be sent to the provincial metrological testing institute for identification so as not to be deceived.

4. Pay attention to the production process and certification documents.

General ultrasound needs professional training. The consequence of using unqualified ultrasonic flaw detector is more serious. Because ultrasonic nondestructive testing is used in quality testing or safety testing, such as the occurrence of quality accidents or even endanger personal safety, you save a little money to buy back unqualified instruments will give you a very unfavorable situation. It is suggested that you do not just look at the advertisement exaggerating for a moment of cheap, to be realistic about the purchase of qualified flaw detector, responsible for the quality is equivalent to responsible for yourself.