The High Precision & Portable Helium Leak Detector, exemplified by the DX200 from Anhui Daxin Vacuum Technology Co., Ltd., is a cutting-edge solution designed for precise and efficient leak detection in various industries. This fully automatic helium mass spectrometer leak detector combines portability with exceptional performance, featuring a compact design ideal for use in vacuum industries and scientific research institutes. Utilizing advanced 180° non-uniform magnetic field technology and reverse diffusion principles, the DX200 offers automatic helium peak scanning, calibration, and range switching, ensuring rapid and accurate detection. With a high sensitivity capable of identifying leaks down to minute levels, it incorporates a unique gas circuit design that enhances helium pumping speed, reduces background clearance time, and prevents contamination. Equipped with a precision filtering device at the leak detection port, it effectively blocks foreign particles, making it a reliable tool for applications in aerospace, automotive, and refrigeration, all while being easy to operate and maintain.