HPM288 and HPM86 explosion proof pressure transmitter are certified by CNEX, the Ex grade is Exd II CT4-T6Gb, which can be safety used in hazardous environments. The explosion-proof pressure transmitter is widely used in the oil field industry, and plays a very important role in all aspects of oil field development, operation and production. It can also be used in chemical industry, when used in explosive places, it can effectively avoid the danger caused by static electricity and electric spark. It also can be a supporting facilities for petrol or gas station, the natural gas delivered to CNG filling stations can be measured at regulated pressure via the pressure transmitter. So that can stable and safety control the whole delivery process.