The digital transmission mode is connected with the sensor, and the 32 point scale variable automatically converts the differential pressure into the liquid level, volume, mass or other variables;

　　The zero adjustment function of the system reduces the difficulty of zero adjustment and calibration;

　　Adopt four wire system 4-20mA HART communication;

　　Simplified installation. No need for pipe rack, impulse pipe, capillary and other hardware, greatly reducing the insulation and heat tracing limit;

　　The pressure sensor can be directly installed on the container to improve the response speed;

　　Improve the measurement accuracy. The cable replaces the capillary, eliminating the error caused by the temperature;

　　Two pressure sensors are connected locally to ensure the synchronization of communication and eliminate the error caused by static pressure change without DCS programming;

　　Shorten the time of installation, maintenance and shutdown, reduce the demand of spare parts, and reduce the overall operation cost of users.