Requirements for pressure sensors in the petrochemical industry

Requirements for pressure sensors in the petrochemical industry

Pressure sensors are one of the most used measurement devices in automatic control in the petrochemical industry. In large chemical projects, almost all pressure sensor applications are included: differential pressure, absolute pressure, gauge pressure, high pressure, micro differential pressure, high temperature, low temperature, as well as a variety of materials and special processing of remote flange pressure sensors.

In the process of modern continuous production, stable and reliable pressure sensors are a strong guarantee for the production process. Once there is a metering error, or even a shutdown failure, the ensuing economic loss will be incalculable. The stability and reliability of pressure sensors have become the primary demand for pressure sensors in the petrochemical industry.

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The demand for pressure sensors in the petrochemical industry is mainly concentrated in three aspects: reliability, stability and high precision. Usually, the measurement of the pressure sensor will drift with the change of the working environment and static pressure. In some small pressure or differential pressure measurements, this drift is likely to be more serious. Under different working conditions, the most correct measurement is obtained, so as to maintain the stability of production and ensure the consistency of the process, which is the embodiment of the stability of the pressure sensor, and it is also the requirement of the stability of the pressure sensor in the petrochemical industry.

On the basis of stability and reliability, high precision is the higher demand for pressure sensors in the petrochemical industry. The accuracy of the control depends on the accuracy of the measurement during the control process. The higher the measurement accuracy, the higher the control accuracy. Among them, reliability and many additional requirements, such as: range ratio, bus type, etc., depend on the structural design of the sensor, the level of machining technology and structural materials.

Corresponding to the measurement accuracy of the pressure sensor is the measurement accuracy and response speed of the pressure sensor, and corresponding to the stability of the pressure sensor is the temperature characteristics and static pressure characteristics of the pressure sensor and long-term stability. The demand for pressure sensors in the petrochemical industry is reflected in four aspects: measurement accuracy, rapid response, temperature characteristics and static pressure characteristics, and long-term stability.