The 1151/3351dp /GP remote differential pressure transmitter is a pressure sensor assembly designed to prevent media in the pipeline from directly entering the transmitter. The remote differential pressure transmitter and the transmitter are connected by fluid-filled capillaries. It is used to measure liquid level, flow rate and pressure of liquid, gas or vapor, and then convert them into 4 ~ 20mA DC signal output. 1151/3351dp /GP differential pressure transmitter with remote sealing device becomes 1151/3351dp /GP remote differential pressure/pressure transmitter, which still has various characteristics of 1151/3351dp /GP differential pressure/pressure transmitter. It can communicate with HART hand operator, set and monitor through it. Can avoid direct contact and transmitter isolation diaphragm measured medium, this method is applicable to the following several ways: 1, the effect of corrosion on the transmitter sensing elements have measured medium 2, needs to be measured medium and high temperature transmitter isolation 3, measured medium has suspended solids or 4 high viscosity medium, the medium to be tested by the lead pipe at the same time easy to curing or crystal 5, change the measured medium must strictly to purify the measuring head 6 and head need to maintain health, it is forbidden to pollution. Use object: corrosive or viscous liquid note: remote transmitter should not be used in vacuum. 1151/3351 dp/GP far eastone form of the differential pressure transmitter remote device has four kinds: 1, 1191 PFW flat type remote device (the standard 3 ", work pressure 2.5 MPa) 2, 1191 RTW thread installation type remote device (larger work pressure 10 MPa) 3, 1191 RFW flange installation type remote device type 4, 1191 efw insert cartridge remote device (standard 3 "or 4", work pressure 2.5 MPa) mixer type selection