With the widespread application of helium in the medical, scientific research and industrial fields, the demand for helium detection equipment is also increasing. These devices can accurately detect the concentration of helium and its leakage, providing safety protection for users, especially in the context of increasingly scarce helium resources, accurate monitoring of the use of helium has become crucial.
The working principle of helium detection system mainly relies on a variety of gas sensing technologies, including thermal conductivity, infrared absorption and mass spectrometry. Different detection methods are suitable for different application scenarios.
Among them, thermal conductivity is the most common detection method. The thermal conductivity of helium is different from other gases such as air. This feature allows the thermal conductivity method to effectively distinguish helium from other gases. When the gas passes through the sensor, the sensor detects the gas concentration based on the change in the thermal conductivity of the gas. The thermal conductivity method has high sensitivity and reliability and is widely used in various industrial and medical equipment.
The infrared absorption method is to determine the helium concentration by detecting the absorption of infrared light of a specific wavelength by the gas. Helium molecules have weak absorption of infrared rays, but this method can identify the presence of helium by comparing the absorption characteristics of different gases. This technology is often used in environmental monitoring and high-precision instruments.
In addition, mass spectrometry analyzes gas composition by measuring the mass and charge of gas molecules. This method is suitable for applications that require extremely high precision and sensitivity, such as laboratory research and detection of high-end equipment.
Helium leak detection equipment is usually equipped with an alarm system. When the helium concentration exceeds the set safety threshold, an alarm will automatically sound to remind the operator to take timely measures. Some helium detection equipment also has intelligent functions, supports remote monitoring and data recording, and ensures that users can grasp the operating status of the equipment at any time.
In general, helium detection equipment has played an important role in ensuring safety and improving resource utilization with its advanced technology and precise monitoring capabilities, and has become an indispensable equipment in all walks of life.