The petrochemical industry's requirements for pressure transmitter

The pressure sensor is one of the most used measuring devices in automatic control in the petrochemical industry. In large-scale chemical projects, almost all pressure sensor applications are included: differential pressure, absolute pressure, gauge pressure, high pressure, slight differential pressure, high temperature, low temperature, and remote flange pressure sensors of various materials and special processing .

In the process of modern continuous production, a stable and reliable pressure sensor is a strong guarantee for the production process. Once a metering error occurs, or even a shutdown failure occurs, the economic losses that follow will be uncountable. The stability and reliability of pressure sensors have become the primary demand for pressure sensors in the petrochemical industry.

The demand for pressure sensors in the petrochemical industry is mainly concentrated in three aspects: reliability, stability and high precision. Generally, the measurement of the pressure sensor will drift with changes in the working environment and static pressure. In some small pressure or differential pressure measurement occasions, this drift is likely to be more serious. Obtaining the most accurate measurement under different working conditions to maintain the stability of production and ensure the consistency of the process is a manifestation of the stability of the pressure sensor, and it is also a requirement for the stability of the pressure sensor in the petrochemical industry.

On the basis of stability and reliability, high precision is a 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: turndown ratio, bus type, etc., depend on the sensor's structural design, mechanical processing level and structural materials.

The measurement accuracy of the pressure sensor corresponds to the measurement accuracy and response speed of the pressure sensor, and the stability of the pressure sensor corresponds to the temperature characteristic, static pressure characteristic and long-term stability of the pressure sensor. 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.

       Nanjing Wotian Technology Co., Ltd. was established in 2005. It is a national high-tech enterprise, a private technology enterprise in Jiangsu Province, a special new small and medium-sized enterprise in Nanjing, and an outstanding private enterprise in Jiangning District; the company has been assessed as Nanjing Engineering Technology Research Center, Nanjing Engineering Research Center, Nanjing Enterprise Technology Center, Nanjing Postdoctoral Innovation Demonstration Base; It is the unit that participated in the formulation of the national standards for "Silicon Piezoresistive Pressure Sensitive Chips" and "Silicon-based Pressure Sensors".