Are there any enthusiastic netizens who recommend a few easy to use medical leak testers to me?

Take a look at the specialty shop.

2killed, kkk loli routine is coming, hungry.

Bubble method: A certain pressure of gas is introduced into the closed workpiece cavity, and the workpiece is sunk into water (or other liquids) to observe whether there are bubbles overflowing. Or apply soapy water to the surface of the workpiece and observe whether there are air bubbles.

Bear. (backward, contaminated products, inefficient, unable to automate).

Pressure drop method: a certain pressure of gas is introduced into the closed workpiece cavity, and the pressure of the gas is detected again to observe whether the pressure is reduced, and whether there is leakage is judged according to the change of pressure. (Backward, effective.)

The rate is extremely low and the sensitivity is minimal).

Pressure difference method: The principle is similar to the pressure drop method, but the method is better. A certain pressure of gas is introduced into a closed workpiece cavity, and at the same time, a gas of the same pressure is introduced into a standard tank, and the standard tank is observed for a period of time.

The difference between the pressure in the body and the pressure inside the workpiece. This is more accurate than the pressure drop method, which excludes pressure deviations caused by changes in ambient temperature. However, the existing differential pressure gauge resolution on the market is only.

100 1000pa (the sensitivity has increased, and the efficiency is not high).

Leakage collection method: suitable for valve products, one side (cavity) is pressurized, and the other side (cavity) collects the leakage gas and reduces the volume of the cavity as much as possible to increase the rate of pressure change per unit leakage. Efficiency is average.

Ultrasonic detection method: The principle is that the leakage point will generate ultrasonic waves, and the leakage point can be found by using an ultrasonic detector. This is suitable for inspections that look for leaks in gas lines. (The accuracy is very poor, and the minimum detection is only 3 kg of pressure.)

Leakage under 100um aperture, the leakage velocity is more than 100,000 cubic millimeters per second).

Halogen gas leak detection method: the halogen gas of a certain pressure is passed into the closed workpiece cavity, and the halogen detector is used to detect whether there is halogen gas leakage outside the workpiece. (Accuracy is acceptable, and the minimum detectable leakage velocity is approximate.)

10 20 cubic millimeters per second, the efficiency is average, to be probed on all surfaces,)

Hydrogen helium leak detection method: The principle is similar to that of halogen gas leak detection method, except that hydrogen and helium gas with smaller molecular weight and faster movement speed is used, so the sensitivity is higher. At a standard pressure of 20 atmospheres, the rate of motion of water molecules is about.

1 2m s, the oxygen molecule movement rate is about 460m s, and the hydrogen molecule movement rate is about 1600m s. A certain pressure of helium is passed into a closed workpiece cavity, and then a helium mass spectrometer is used to detect the workpiece.

Whether there is hydrogen helium leakage around the cavity, this is the current method used for high-precision leak detection, compared with the previous methods, the accuracy is much improved, of course, the cost is also very high. (The highest sensitivity, in vacuum mode, when more than 100 million gas molecules per second are leaked, it can be detected, at about 5 cubic micron seconds, or 10 -13 cubic meters * Pa seconds at standard atmospheric pressure, and in atmospheric mode, the sensitivity is reduced by 4 orders of magnitude, about cubic millimeter seconds.) Not only is the equipment expensive, but also the need to consume expensive helium, and it is necessary to configure a vacuum pump, etc., and the efficiency is acceptable, and all surfaces should be scanned and detected when used).

What Gas Leak Detector?

Leak detectors for bearing inspection and lubrication failure monitoring Mechanical Fault Diagnosis Condensate valve inspection Pressure & Vacuum Leak Detection Leak amplification fluid applications Electrical Partial or Arc Discharge Detection Heat exchangers, boilers and condensers Ultrasonic sound test, fire electrical discharge, bearing, gear, gearbox, engine, pump cavitation, motor, compressor, operating equipment and lubrication failure detection, ultrasonic seal non-destructive test, cargo box, weld, door, gasket, electrical equipment detection, electrical partial discharge (corona), High-voltage arc, ignition, electric spark, leakage traces, insulation aging, power switches, transformers, relays, circuit breakers, busbars, insulation device detection, heat exchangers, boilers and coolers, condensers, exhaust systems, heating systems, pressure test, pressure vacuum, containers, air, oxygen, nitrogen, refrigerant leakage, valve valves, hydraulic valve seat leakage or blockage detection, steam valve, steam removal gate, air duct detection, mechanical fault diagnosis, ultrasonic sound test, automotive aircraft ship cockpit seal test, Transmission line detection, remote inspection, pipeline and pipeline leakage detection, general mechanical fault detection and troubleshooting.

Leak detection serves all walks of life, as long as there is a leakage environment, it is essential to detect potential hidden dangers to achieve the effect of leak detection and supplementation!

System application flexibility.

The application flexibility of the system involves the detection mode of the equipment, the detection medium, the measurement system, the operation mode, the automatic deviation correction function and the extension accessories.

1.The detection method will directly affect the test results, and choosing the right test method for the product to be tested will make the test effect the best.

2.The test medium should preferably be non-polluting and low-cost purified air.

3.The measurement system will automatically help you with the volume conversion.

4.Automatic deviation correction can effectively improve the detection accuracy and efficiency.

Leak testing includes a wide range: leak testing instruments, leak testing equipment, leak testing services to provide Liliang, leak detection evaluation files; Leak detectors can be used to check leaks in air, gas, steam, liquid conveying pipes, and various equipment.