How to identify the authenticity of the ultrasonic flaw detector?

Since the ultrasonic flaw detector is a very professional instrument, it is impossible for non-professionals to understand this instrument at all, so many counterfeiters took advantage of loopholes. Some domestic manufacturers take advantage of the fact that digital ultrasonic flaw detection can be faked, and wantonly produce unqualified products.
If you do not have professional detection tools, the following simple detection methods can help you identify the authenticity:
1. When the probe is not connected, adjust the gain to the maximum. The waveform on the screen cannot exceed 10% of the screen. If it exceeds, the instrument is unqualified.
2. Check whether the vertical linearity is qualified and the method
3. There are still some indicators that require special test blocks. It is recommended that the new instrument be sent to the provincial metrology and testing institute for identification, so as not to be fooled.
4. The price is extremely low.
5. Pay attention to the production process and certification documents. Generally, ultrasound requires professional training.
The consequences of using unqualified ultrasonic flaw detectors are more serious. Since ultrasonic non-destructive testing is used in quality testing or safety testing, if a quality accident occurs or even endangers personal safety, the unqualified instrument you bought back after saving a little money will bring you a very disadvantageous situation. We condemn those counterfeiters, please improve your technology development level, don't harm others or yourself, if a major accident happens, it will also make you bankrupt and put yourself in prison.