Lino LNT203 flush mounting 4-20ma diaphragm seal type pressure transmitter is is formed on the basis of the prototype of the general pressure transmitter, and is formed by adding a welded and sealed isolation diaphragm structure. Its welded sealing isolation diaphragm device has a variety of different process connection structures, especially suitable for pressure measurement in high temperature, high viscosity and easy to block occasions, and also suitable for pressure measurement in sanitary and medical occasions.