Ultrasonic Detector

Ultrasonic detectors are mainly used for distance measurement, gravel, sterilization, etc., and can obtain better sound energy. Ultrasound is ubiquitous in people's lives.

If a container or pipe is filled with gas, when its internal pressure is stronger than the external pressure, due to the large internal and external pressure difference, once the container has a leak, gas will be flushed out of the leak hole. When the size of the leak hole is small and the Reynolds number is high, the turbulence will be formed when the gas blows out. The turbulence will produce a certain frequency sound wave near the leak hole. The frequency of the acoustic wave vibration is related to the size of the leak hole, and the ear hole is larger Audible sounds can be heard, and when the leak is small and the sound wave frequency is greater than 20 kHz, the human ear cannot hear it, but they can spread in the air and are called no-load ultrasonic waves. Ultrasound is a high-frequency short-wave signal, and its intensity rapidly decays as the propagation distance increases. Ultrasound has directionality. Using this feature, you can determine the correct leak location.

The ultrasonic detector leak detection system differs from the specific gas sensor in that it is limited to the specific gas that it is designed to sense, but is detected by sound.

Any gas passing through the leak hole will generate eddy currents, and there will be parts of the ultrasonic wave band, making the ultrasonic detector leak detection system able to sense any kind of gas leak.

Leak detection system with ultrasonic detector scan, you can hear the leak from the headphones or see the digital signal changes. The closer to the leak, the more obvious. If the field environment is noisy, use the rubber tube to narrow the receiving area and shield the antagonistic ultrasound.

In addition, the frequency adjustment capability of the leak detection system of the ultrasonic detector also reduces the background noise interference. Check the pneumatic system and test the pressure cables used by the telecommunications company. Tanks, tubing, and hoses can be inspected by pressurization, as well as vacuum systems, vortex exhaust, diesel engine fuel intake systems, vacuum chambers, ship spaces, watertight doors, material handling systems, pressure vessels and piping Internal and external air leakage.

Ultrasonic leak detector SDT is a leak detector for ultrasonic detection. It can inspect the air, gas, steam, liquid, etc., transmission pipelines and leaks of various equipment. If used in conjunction with an attached signal generator, it can also inspect the sealed state of refrigerators, sealed containers, air conditioning systems, tires, compressors, and various infusion pipelines. It is a powerful tool for improving the environment and saving energy.