Helium mass spectrometer leak detector is highly sensitive and accurate, widely used for sealing detection of electronic components, vacuum equipment, and pressure vessels. It can detect small leaks and ensure product quality and safety. The detection methods include helium spray method and vacuum box method.
Ensuring the sealing of products is crucial in modern industrial production and scientific research. Helium mass spectrometer leak detector has become an indispensable detection tool in many fields due to its high sensitivity and precise detection characteristics.
1. Testing samples
It can be widely applied to various types of product testing, including but not limited to the following categories:
Electronic components, such as integrated circuits and semiconductor devices, require extremely high sealing performance to prevent impurities such as water vapor and dust from entering and affecting their performance.
Vacuum equipment: such as vacuum furnaces, vacuum pumps, etc., ensure that they maintain the required vacuum level during operation.
Pressure vessels: such as gas storage tanks, pressure pipelines, etc., to prevent gas leaks from causing safety accidents.
2. Testing items
Sealing test: mainly tests whether there are leakage points and the degree of leakage in the product.
Vacuum degree detection: For products that need to work in a vacuum environment, check whether their vacuum degree meets the requirements.
Micro leak detection: capable of detecting extremely small leaks to ensure high product quality.
3. Testing method
Spray helium method: Spray helium gas at a certain pressure onto the surface of the tested product. If there is a leak point in the product, helium gas will enter the interior of the product through the leak point and be detected by a helium mass spectrometer leak detector. This method is suitable for detecting larger leakage points.
Vacuum box method: Place the tested product into a vacuum box and then vacuum the box. If there is a leakage point in the product, helium gas inside the box will enter the product through the leakage point and be detected by a helium mass spectrometer leak detector. This method is suitable for detecting small and precise products.
4. Testing instrument – helium mass spectrometer leak detector
The helium mass spectrometer leak detector mainly consists of a mass spectrometry chamber, an ion source, an analyzer, a collector, and other parts. Its working principle is to utilize the characteristics of small molecules, high diffusivity, and high penetration of helium gas. When helium gas enters the detection system through the leakage point, it is ionized into ions by the ion source, and then separated in the analyzer according to the mass to charge ratio of different ions. Finally, the signal of helium ions is detected by the collector.
The helium mass spectrometer leak detector has the following advantages:
High sensitivity: capable of detecting extremely small leaks, with a detection limit of up to 10 ⁻¹² Pa · m ³/s.
Quick detection: The detection speed is fast, and the product can be tested in a short period of time.
High accuracy: able to accurately determine the location of leakage points and the size of leakage.
In summary, helium mass spectrometer leak detectors play an important role in detecting product sealing. By testing different types of samples, the quality and safety of products can be ensured, providing reliable guarantees for industrial production and scientific research.
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