Working Principle of differential pressure transmitter : Pressure transmitter is used to measure level,density and pressure of liquid, gas or steam, and then convert pressure signal into 4~20mA/0~20MA/0~5VDC/1~5V/0~10VDC signals. Application Field of differential pressure transmitter : 1. Petroleum / Petrochemical / Chemical 2. The electricity / City gas 3. Pulp and paper 4. Iron and steel / Nonferrous metal / Ceramic 5, The mechanical / Shipbuilding industry Technical Parameters of differential pressure transmitter : 1. Measured Medium: Gas, liquid(no corrosion of stainless steel) 2. Measured Range: -0.1~0~0.001~100MPa(within any range) 3 Pressure Type: Negative pressure, absolute pressure, standard pressure, sealing pressure (not required default gauge) Corrugated cardboard boxes outer and foam paper inner packing size: 4x5x14cm