Technological development pressure transmitter: pressure, differential pressure transmitter process variable transmitter is the most important class, wide range of applications, in addition to be used for pressure, differential pressure measurement, it can also used for flow, liquid Other parameters measured position, proportion and the like. A 5000t / d cement production line, in the key parts of the process must be set up pressure transmitter, such as kiln, kiln, preheater top and bottom levels, each time the wind and cooler each room, to monitor the process properly. According to statistics, a total of dry cement production line set up pressure transmitter is about 80 units. By measuring the pressure transmitter mechanism to points, the most commonly used capacitive, inductive, the proliferation of silicon, VW and so on. In addition to the accuracy of the measured DR kiln negative pressure type differential pressure transmitter is beyond 0.5%, most of the remaining 0.25 percent is Rosemount transmitters agency, which is characterized by the use of 4mA ~ 20mA transmission of analog gauges, Local display the header for the pointer Rosemount transmitter range, turndown ratio of 6: 1 or so, the stability of six months, which is the first generation of analog transmitters. The second generation of smart transmitters, so-called intelligent concept are: sensors and transmitters are driven by the microprocessor, and their communications with the ability to self diagnose. Smart pressure transmitter in addition to high accuracy (0.1% to 0.075%), Rosemount transmitters, large range ratio (up to 100: 1) and high stability (1 to 5 years) outside Rosemount Far East transmitter device, it is generally with HART protocol or the production company of the agreement, the latter's products also comply with international standards of FF fieldbus or PROFIBUS-PA protocol, it will be replaced by digital display table can also be operated by hand or in Remote control system configuration to achieve the set distance or remote modify transmitter configuration data. Transmitter (transmitter) is converted to an output signal of the sensor can be identified as controller signal (or the non-power sensor input is converted into an electrical signal while amplifying the order for remote measurement and control signal source) converter. Sensor and transmitter monitoring sources together constitute automatic control. Different physical needs of different sensors and the corresponding transmitter. Many types of transmitters used in industrial instrumentation above the main transmitter temperature transmitter, pressure transmitter, flow transmitter, current transducer, voltage transducer and so on. Many different types of transmitters, in general, is a signal emitted by the transmitter to the secondary instrument secondary instrument display the measured data. Rosemount transmitters Rosemount transmitters _ _ Hua Hui science and technology provided by the Jinan-Technology Co., Ltd. Jinan Huahui Technology Co., Ltd. (www.cnhuahui.com/) strong, credible, in Jinan, Shandong pressure instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead China-Technology into the brilliant and you work for a better future!