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Japanese Helium Leak Detection Equipment
Helium Leak Detection Equipment Description
Helium leak detector is a kind of gas leak detection equipment widely used in refrigeration, automobile, semiconductor and other industries.
Helium leak detector is an accurate and portable instrument, DoDo machine’s helium leak detector is equipped with a trolley for easy movement.
Helium itself is very safe and is an inert gas with small molecules. It is not easy to react with other substances, and its relative molecular mass is very small (only a little larger than hydrogen), which is suitable for detecting small leaks.
The helium leak detector has a helium recovery device, which can achieve extremely high sensitivity and repeatability. The helium leak detector is the optimal solution for leak detection and tightness testing under vacuum.
Helium Leak Detection Equipment Features
- Portable, with trolley
- High sensitivity 5×10-13Pa·m3/s
- Response time <0.5s
- Accessories use international famous brands
- The software comes with Helium Leak Rate Conversion
Helium Leak Detection Equipment Items
DA100
The most popular model, pumping speeds up to 16 cubic meters per hour meet most needs.
DA200
The most portable model, the whole machine is only 45kg, and the pumping speed is 1.8 cubic meters per hour, suitable for portable situations
Helium Leak Detection Machine Advantages
Global Warranty
Worry-free after-sales service for software and hardware, quick feedback from customer service within 7*24 hours
Experience
Multiple project experience to provide you with personalized advice
Easy Maintenance
No maintenance required within 3-5 years
Turnkey Machine
Simple and convenient, out of the box
Our Brand Customers
DoDo machine has cooperation with well-known brands all over the world
Our Suppliers
DoDo machine firmly believes in globalization, common accessories will increase the reliability and sustainability of the machine
All our accessories are suppliers of world-renowned brands, such as Mitsubishi Group, Omron, etc.
The core technology has independent intellectual property rights and is completely independent research and development.
We are not making ordinary consumer goods. Customers need to use them for 10 or even 30 years after purchase. Quality and durability are our primary considerations.
Physical Dimension DA100
Physical Dimension DA200
| Model | DA100 | DA200 |
| Minimum detectable leak rate (negative pressure method) | 5×10-13Pa·m3/s | 5×10-13Pa·m3/s |
| Minimum detectable leak rate (positive pressure method) | 5×10-9Pa·m3/s | 5×10-9Pa·m3/s |
| Leak rate display range | 1×10-1～1×10-13Pa·m3/s | 1×10-1～1×10-13Pa·m3/s |
| Air inlet pressure coarse inspection | 1500Pa | 1500Pa |
| Air inlet pressure moderate inspection | 200Pa | 200Pa |
| Air inlet pressure precision inspection | 40Pa | 40Pa |
| Start Time | ＜2min | ＜2min |
| Response time | ＜0.5s | ＜0.5s |
| Rough pump pumping speed | 16 m3/h | 1.8 m3/h |
| Weight | 83Kg | 45Kg |
| Dimensions (L*W*H mm) | 830*520*1000 | 510*510*360 |
Customer World-class refrigeration equipment manufacturer.
This refrigeration heat exchanger is used in automobiles. Automobile manufacturers have strict leak-proof requirements for accessories. Using helium detection is the most suitable solution.
What DoDo provides this time is our DA100 series of products, which can perfectly meet customer requirements.
Thermos cups are generally vacuum-insulated to achieve long-term heat preservation containers, and most of the materials are made of stainless steel.
Depending on the quality of the thermos cup (bottle), there are mainly the appearance and thermal insulation performance of the cup, which are the main technical indicators of the thermos cup. The vacuum sealing performance of high-quality thermos cups will be strictly checked during the production process, usually using the negative pressure helium injection method of a helium mass spectrometer leak detector to check for leaks.
For semi-finished thermos cups with tails (direct fusion welding) and thermos cups without tails (usually sealed and welded by vacuum furnace sintering process), check for leaks before sealing and welding. The picture below shows the DoDo brand helium mass spectrometer leak detector testing the tightness of the thermos product at the customer site.
Dodomachine provides a set of simple and portable helium leak detection solutions, which solves the quality inspection problem for customers and greatly improves the yield rate of factory products.
Oil tank trucks and low-temperature storage tanks achieve the purpose of heat insulation by vacuuming the interlayer through suction nozzles. However, after a period of use, due to possible leakage, the insulation performance will decline, and the liquid in the storage tank will absorb heat and vaporize or the gas will absorb heat and expand. As a result, the pressure of the inner tank rises, and then the safety valve is triggered to vent frequently. What the safety valve releases are the economic substances stored in the tank itself, which will cause economic losses and pose a safety hazard. However, since the leak point of the interlayer of the tank car is generally very small, it cannot be detected by conventional methods. At present, the most commonly used method is to use a helium mass spectrometer leak detector for leak detection.
During leak detection, the auxiliary pump starts to evacuate the interlayer. When the vacuum drops to a certain pressure, the leak detector starts to work, and then helium is injected into the suspicious position. After helium is injected, helium enters through the leak hole. Leak detection system, when the leak detector detects a helium signal, the leak rate will be different according to the size of the leak hole and displayed on the leak detector, at this time the position and time of the leak point can be accurately judged.
Note: Before leak detection, the welding slag in the vacuum system of the tanker should be removed, and the tank should be vacuumed with nitrogen to ensure the vacuum degree, grease and cleanliness in the container, and then dry the tank. The purpose of the cleaning treatment is to accurately find the location of the leak point when the surface is injected with helium, so that the leak hole will not be blocked by impurities such as oil. Because it contains molecular sieves, it needs to be heated and pre-vacuumized before leak detection. Because molecular sieves have adsorption properties, a large part of helium will be absorbed when helium is injected, so that the signal of helium in the leak detector itself is small, and the leak detection time is long. It will lead to poor leak detection effect, and it is difficult to accurately locate the leak point.
DoDo machine provides a set of simple and portable helium leak detection solutions to solve quality inspection problems for customers, greatly improving work efficiency and safety.
Irradiation accelerators, also known as electron accelerators, are mainly composed of vacuum acceleration structures (such as acceleration tubes), radio frequency acceleration chambers, and circular acceleration chambers. A certain acceleration electric field is generated in vacuum to accelerate particles. The high-energy electron beam irradiation produced by it can cause some substances to produce physical, chemical and biological effects. Irradiation technology has a wide range of uses. Irradiation cross-linked wire and cable is the result of the application of radiation technology in wire and cable. With the development of electric power, communications, automobiles, computers, offshore oil exploration, aviation and aerospace, and household appliances, the requirements for the performance of wire and cable insulation are getting higher and higher. The irradiation cross-linking process can make the molecular structure of the polymer material change from a linear structure to a three-dimensional network structure, thereby significantly improving the physical and chemical properties of the material.
Figure 1 Detect possible leaks
Irradiation accelerators can provide high-speed electron beams mainly due to the vacuum ring pipeline in the electromagnetic field, which is evacuated to a high vacuum by the vacuum pump group and maintained. If the vacuum cannot be maintained, it will interfere with the acceleration of the electron flow, making it difficult to produce expected A stream of high-energy particles to irradiate the product. Usually, the leak holes of the vacuum annular pipeline are extremely small channels, and it is necessary to use a helium mass spectrometer leak detector for leak detection. Mainly use the negative pressure method for leak detection, that is, connect the leak detection port of the helium mass spectrometer leak detector to the vacuum system of the coating machine, and spray on possible leaks.
DoDo machine helium mass spectrometer leak detectors are widely used in leak detection of vacuum system equipment (such as radiation accelerators, etc.). The above picture shows the on-site leak detection of accelerator equipment in a well-known cable factory. The helium mass spectrometer leak detector has won unanimous praise from many customers due to its boundary control, high sensitivity and ultra-stable characteristics.
Titanium steel composite plate is a plate used in the inner wall of power plant chimney. The main function is to prevent the corrosion of the inner wall of the chimney, and it has been more and more widely used in recent years. In the production of titanium steel clad plates, the common quality problems are: clad plate defects and welding defects. Among them, the former is mainly due to insufficient bonding rate, local surface cracks of titanium layer and steel layer, etc.; the latter mainly has pores, cracks, incomplete penetration, and slag inclusions.
Because the titanium-steel composite plate is made by welding two metal plates of different materials, vacuuming them, and then pressing them into shape. Therefore, if there is leakage at the weld, air will re-enter the interior of the plate after the plate is evacuated, causing bulges during pressing and forming, resulting in defective products. Therefore, the titanium-steel clad plate needs to be checked for helium after vacuuming to find out whether there is any leakage.
Dodomachine provides a set of simple and portable helium leak detection solutions, which solves the quality inspection problem for customers and greatly improves the yield rate of factory products.
Helium Leak Detection Equipment Buying Guide
Leaks in the walls of any structure cause the escape of gas or liquid within that structure and the helium leak detection test is a method to check if there is any leak present in different types of equipment.
Helium leak detection has different types of tests available that make sure that the quality and functionality of your system are on top and that you benefit from the best technologies without any problem.
1. What Are the Types of Industries That Need Helium Leak Detection?
With the increase in global warming, the need for refrigerators and air conditions is increasing and manufacturers are working hard to make the most eco-friendly equipment for the consumer.
The industries that make this equipment with the pressurized system and vacuums need helium leak detection the most. In these systems, a minute leak can affect the product’s functioning.
These leaks have to be detected with the help of helium leak detection because the gases escaping through the leak are sometimes dangerous and a hazard to the people working near it.
2. Why Is Helium Used for Helium Leak Detection?
Helium is a lightweight gas of only 4 molecular weights. This is what makes it perfect to be used as a tracer gas used for leak detection. It is an inert gas that is always found in an atomic state.
Helium is most widely used for leak detection due to its non-toxic, and easy escaping nature. It is the lightest gas that is also non-corrosive. Helium is used because it is easily detected by the mass spectrophotometer even when the smallest leak is present and it is detected when other gases are also present. You can use helium for inside and outside of both types of leak detection tests because it is safe to use.
3. What Are the Different Methods of Helium Leak Detection?
There are many methods that we can use to detect helium leak detection, some of them are costly and some are highly precise and are used in big industries. These methods of helium leak detection are,
1. Sniffer Method
In this method, helium is used to pinpoint the location of the leak in a system. This method is used mostly when any unit is installed and any problem hints that a leak is present.
You can also use it to check if a joint is leakproof or not. In this method, helium is placed in the system and when it escapes through the leaking point the leakage is determined, it is a method that has an inside-out approach.
The part to be tested is pressurized with the tracer gas so that tracer gas escapes through the leak. The sniffer is a device that is passed outside the system to check the point of leak. A leak detector sniffs the highest level of gas leaking and alerts, and this is how it works.
2. Accumulation Leak Detection
This is also an inside-out leak detection test in which we use helium, this method is less expensive. In the accumulation leak detection the system is placed in a chamber that is closed, the system we are checking for leaks is filled with helium.
If a leak is present the gas starts leaking and accumulating in the chamber. The leaked gas is calculated and the leak is determined by the wise technology sensor. This method is relatively less costly than the vacuum method and it is used in the refrigeration, and medical equipment industries.
3. Vacuum Helium Leak Detection
In vacuum helium leak detection the helium is used inside out the system in which we want to find the leak. In this method, the system or equipment is placed in a chamber and the vacuum is created by the pumps.
This is an expensive method but its benefits are also amazing it re-uses the helium that was placed in the system and vacuum helium leak detection is the most accurate leak detection test.
The mass spectrometer is used to check the helium gas, you can use it in automated equipment and testing before getting them out. You can check even the minute amount of gas lost in vacuum leak detection because it is very sensitive.
A helium mass spectrometer can tell you the place where a leak is present because of its efficient way of detecting helium. This method can detect helium even when there are other types of gases present which makes it the most sensitive and effective method.
4. Importance of Helium Leak Detection
Some types of machinery have to be leak free to work properly like refrigeration, aerospace, and heating equipment. Helium leak detection is a safe method that improves the safety, quality, and efficiency of this equipment.
Helium leak detection does not cause damage to the system and is checked for leaks, helium does not cause corrosion which makes it a perfect testing gas.
4. What Are the Industrial Applications of Helium Leak Detection?
Industries are the mass producers of our everyday equipment and helium leak detection helps in the standardization of making equipment. The main industries that use helium leak detection for their quality maintenance are
· Fuel Tanks
Helium leak testing is used in fuel tank industries because mostly these fuel tanks carry inflammable material and it is dangerous if there are even small leaks present. Helium is best to check the minor leaks because it is very light and helium leak detection is the best way to check leakage in fuel tanks.
· Pipelines
Pipelines are a big part of our everyday normal life, they are used in heating and cooling systems
And these need to be leakproof for working perfectly therefore on the industrial level helium leak detection is the method used to check the leaks.
· Refrigerators
Every household needs a refrigerator and these refrigerators have refrigerant gas that needs to be contained in them, even a minor leak can make the gas escape and the refrigerator won’t work properly.
Industries of refrigerators use helium leak detection because this is the most sensitive way of leak detection.
· Air-conditioners
Air-conditioner needs are increasing day by day because of the increased global warming, the air-conditioners have copper tubes that should not have any leakage to work properly. Helium leak detection is the main method the industrialists use to make sure there is no leakage.
· Pressurized Containers
Special vessels and pressurized containers are also made leakproof after checking with helium leak detection tests.
5. What Are the Benefits of Using Helium Leak Detection?
There are many benefits of using Helium Leak detection making it the most accurate and reliable method to check leaks in a system.
Versatile
Helium leak detection is a way to check leakage in a variety of products. You can use it not only in refrigeration and air-conditioning systems but it can be used in medical equipment, vacuum systems, and automotive devices made from metal, ceramics, and even plastic.
Helium leak detection can be used in two types of leak testing external or internal testing making it a versatile way of leak testing.
Precise
Helium leak detection is the most accurate way to check for leaks. By using this method you can easily point out the location of the leak and later on you can easily repair and reduce any risk of quality damage.
In this way, time wastage can be avoided and product quality is increased. The products are safe after testing because of the nature of helium gas. Helium leak detection can be used for costly equipment because of its sensitivity.
Highly Sensitive
Helium is best for leak detection because of its non-toxic nature. Helium can escape through the tiniest hole making it a sensitive gas for leakage. Helium can detect the smallest leaks because its molecular weight is very small.
6. Can We Use Helium Leak Detection in Any Other Industries than HVAC?
Helium leak detection can be used in the making and checking of gas equipment used in medicine, the examples are oxygen, nitrogen, and carbon-di-oxide gas.
Helium can also be used in the checking of vacuum systems in medicine example is MRI. It can be used in the leak detection of anesthesia and sterilization systems to avoid any mishap.
Helium leak detection can be used in the space equipment used in aircraft and rockets. In these types of equipment, vacuum conditions are followed and leak testing is necessary before using this equipment.
Conclusion
Helium leak detection is an effective method to check even minute leaks in different types of equipment used in the HVAC industry, medical instruments, and equipment used in rockets and vacuums. Helium is a non-toxic, non-corrosive, light molecular-weight gas that can escape from the smallest leak which makes it a highly sensitive gas in terms of leakage.
With training and experience helium leak detection can bring many benefits that include versatility, accuracy, and safety. These benefits make this method the best to detect leakage in any system, whose quality and performance are affected by leakages.
