With the development of the oil and gas industry, China’s oil and gas pipeline construction has made great progress. At present, pipeline transportation has become the main mode of oil and gas transportation. 60% of China’s existing oil and gas pipelines have been in operation for about 20 years, and some crude oil pipeline networks in the east have been in operation for more than 30 years. Due to pipeline corrosion and oil theft, many pipelines are seriously aged, and pipeline leaks often occur, causing energy waste and environmental pollution.

The traditional pipeline leak detection method is usually based on pressure sensors to collect pressure signals in the pipeline, and determine whether the pipeline is blocked or there is a leak point through pressure changes. This pipeline detection method requires the transmission and display of pressure signals when applied. However, when the transmission distance of the pressure signal is long, the use of traditional pressure detection devices to transmit pressure signals cannot meet the requirements for pressure signal acquisition and processing because of large background noise and pressure signal attenuation.

Therefore, in the oil production process, a stable and reliable pressure sensor is a powerful tool to ensure a continuous production process. Because if there is a measurement error, it may lead to shutdown, and the resulting economic losses will be huge. Therefore, this is the most basic demand for pressure sensors in the oil industry.

The oil industry is a precision processing industry, and has high requirements for the measurement accuracy of pressure sensors. In the control system, the higher the accuracy of the pressure sensor measurement value, the more accurate the control. The accuracy value of the pressure sensor in the oil industry reaches 0.075%, which can basically meet the use requirements.

The working principle of the oil pipeline pressure sensor is: the medium pressure directly acts on the diaphragm of the pressure sensor, causing the diaphragm to produce a micro-displacement proportional to the medium pressure, changing the resistance of the sensor and detecting this change in the electronic circuit, converting and outputting a standard signal corresponding to this pressure.

The requirements of the petrochemical industry for pressure sensors far exceed the above requirements, and also include “the type and range ratio of the pressure sensor bus”. Compared with adding pressure sensors, increasing the measurement range is more flexible, which brings great convenience to the design and application process.