High-temperature-resistant corrosion-resistant anti-crystallization pressure and differential pressure transmitter isolation module

The invention relates to a high-temperature-resistant corrosion-resistant anti-crystallization pressure and differential pressure transmitter isolation module. The isolation module comprises a ripple diaphragm, a ripple flange, a capillary tube and a filling liquid. The ripple diaphragm is welded at the bottom of the ripple flange, the capillary tube goes deep into the ripple flange from the upper portion of the ripple flange, a communicating channel is arranged between the capillary tube and the ripple diaphragm, and the filling liquid fills the capillary tube and the communicating channel. A transmitter applying the module can realize measurement of high-temperature liquid-state sodium pressure and provides a pressure measurement means for sodium-cooled fast reactor and a test loop, and the structure of the pressure and differential pressure transmitter isolation module realizes high temperature and corrosion isolation; a heating apparatus realizes prevention of sodium crystallization obstruction; and a temperature additional error compensation function is realized, and the measurement precision is improved.