Introduction of Industrial Automation Instrument
Industrial automation instruments refer to instruments used in industrial automation production and control, aiming to monitor, record, control and adjust production parameters, in order to achieve automation of the production process and improve the accuracy, efficiency and stability of the production process. Industrial automation instruments can be classified into: pressure, temperature, flow, level, signal and so on.
Types of industrial automation instruments
1.Pressure instruments
Pressure instruments are instruments used to measure the pressure of a fluid and generally convert pressure signal into electrical information. It can be divided into differential pressure transmitter, pressure gauge, pressure switch and pressure transmitter.
The differential pressure transmitter measures the pressure difference of two points, commonly used are differential pressure level gauge and differential pressure flow meter. The pressure gauge and pressure switch are used for measuring, sending out alarm signal and controlling. The application of pressure transmitter is more versatile, which is mainly used for the remote measurement of pressure value and playing an important role in the field of automation.
2.Temperature instruments
The temperature instrument is an instrument used to measure the temperature of a medium. Commonly used temperature instruments include thermometer, thermocouple and thermal resistance. The thermometer indicates the temperature of the medium directly by its mechanical structure, and is mainly used for simple temperature measurement. The thermocouples and thermal resistance mainly convert the temperature information into electrical signals, and the thermocouple is the most common temperature measurement element.
3.Flow Instruments
Flow instruments are instruments used to measure fluid flow. The measurement of fluid flow generally uses volumetric flow meter, velocity Flow meter and mass flow meter. The vortex flow meter and movable type (target) flow meter is often used as velocity flow meter, because of the requirements on the medium, most of flow meter is only suitable for single medium measurement.
4.Level Instruments
The level instrument is an instrument for measuring the level of a liquid or material in a container. Commonly used instruments include float type level switch, pressure type level gauge, live type level gauge and ultrasonic level gauge. Float type level switch is a mechanical type level switch, its structure is relatively simple, relatively low cost, generally can be used to control alarm or open and close control automation; Pressure type level gauge is used to measure the pressure of a liquid or material directly, and can measure level or pressure accurately; Live type level gauge is mainly used for level measurement in low pressure condition; Ultrasonic level guage is a non-contact measuring instrument based on the principle of ultrasonic wave.
Conclusion
The industrial automation instrument plays a key role in the production and control of industrial automation. It can monitor, record, control and adjust production parameters, so as to improve the accuracy, efficiency and stability of the production process. Currently, industrial automation instrument can be divided into pressure instruments, temperature instruments, flow instruments, level instruments and other different types. In the application, various instruments should be selected according to the specific requirements of the process.
