The intelligent pressure transmitter has a great improvement over the conventional transmitter in terms of function, accuracy, reliability, maintenance and configuration. The intelligent pressure transmitter can not only measure the pressure and differential pressure, but also measure the flow rate of gas, steam and liquid in combination with related supporting devices. Measurement of level, volume and mass of liquids, etc.
Compared with ordinary pressure transmitters, the characteristics of intelligent pressure transmitters are as follows:
1. The intelligent pressure transmitter has the ability to automatically compensate, and can automatically compensate for its nonlinearity, temperature drift, time drift, etc. through software.
2. The intelligent pressure transmitter has two-way communication function. The microprocessor not only accepts and processes sensor data, but also feeds the information back to the sensor to adjust and control the measurement process.
3. The intelligent pressure transmitter can store and remember information, and can store the characteristic data, configuration information and compensation characteristics of the sensor.
4. The accuracy of the intelligent pressure transmitter is high, generally from 0.1 to 0.25.
5. The range of intelligent pressure transmitter is large, with a range ratio of 40, 50 or even 100.
6. The intelligent pressure transmitter can remotely set the zero position and range of the instrument on the handheld communicator (also known as the hand communicator).
7. The intelligent pressure transmitter adopts micromechanical and electronic processing technology, special integrated circuit, compact structure, strong reliability and small size.
8. Digital communication can be realized between the intelligent pressure transmitter and the DCS control system, which provides conditions for the fully digital fieldbus control system.
Intelligent pressure transmitters have been widely used in industrial process control, petroleum, chemical, metallurgy and many other industries.
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