Portable hydrogen leakage high-precision measuring device

The utility model discloses a portable hydrogen leakage high-precision measuring device, which comprises a mounting bottom plate, and the top of the mounting bottom plate is detachably provided with a cover through a bolt; and a precision measuring main body is mounted at the top of the mounting bottom plate. According to the portable high-precision hydrogen leakage measuring device, as hydrogen is not uniformly distributed in the closed cavity, pumping type detection instead of diffusion type detection is adopted, and the pumping flow is accurately controlled, the problem that the hydrogen is small in mass, is easily gathered in a narrow space at the top and is not easy to detect can be solved; the influence on the gas concentration detection accuracy due to the damage to the whole gas atmosphere caused by overlarge flow can be avoided, and compared with other hydrogen sensors, the solid electrochemical sensor has the characteristics of small size, low power consumption, long service life, sensitive detectio