Detection principle: When the fluid (gas or liquid) passes from the high pressure end to the low pressure end, it will be relatively "quiet" under normal conditions. Once the valve leaks or leaks, the fluid will flow through the leak point. Turbulence produces strong ultrasonic signals and can be detected by the DP82918 product even in noisy environments. Most valve leaks and internal leaks are recommended to be the most reliable. Valve leaks or internal leaks can be easily measured. The frequency modulation function of the instrument can highlight the fault signal and significantly reduce the interference of external sounds, even if multiple valves that are closely arranged are not affected.
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