DBF vector level transmitter is used to continuously measure differential pressure of viscous, corrosive, precipitation, crystallization fluid and level of liquid in the open container or pressured container. It can equip with throttling device to measure flow of liquid, gas and vapor. User can use flat flange to measure gas and non-crystalline viscous liquid. The media can contact with diaphragm box and convert measured value into 0～10mA DC signal output.