Nexisense Digital Explosion-Proof Pressure Transmitter: Application Practices in Petrochemical and Industrial Automation Fields

In the petrochemical industry and industrial automation field, pressure monitoring is a critical link for ensuring production safety and efficiency. The Nexisense digital explosion-proof pressure transmitter integrates high-precision measurement, explosion-proof safety design, and user-friendly operation features. It is suitable for flammable and explosive environments as well as high-intensity production scenarios, helping enterprises achieve real-time data acquisition and process optimization.

Product Overview

The Nexisense digital explosion-proof pressure transmitter is specifically designed for high-risk environments and is equipped with an LCD digital display that supports direct on-site reading of pressure values. The product adopts an aluminum alloy explosion-proof enclosure with an explosion protection rating of Exd II CT6 Gb and an ingress protection rating of IP67, effectively resisting dust, moisture, and explosive gases.

In petrochemical workshops and automated production lines, this type of transmitter not only provides accurate data but also simplifies the commissioning process, making it a reliable component for process control in many enterprises. With the advancement of intelligent transformation, its HART protocol support further enhances system integration capabilities.

Detailed Measurement Method

The digital explosion-proof pressure transmitter operates based on the diffused silicon piezoresistive principle. The process pressure acts on the sensitive sensing element, causing resistance changes, which are amplified and digitally compensated before outputting a standard 4–20 mA current signal. Optional HART protocol enables digital communication and supports remote configuration.

Built-in wide temperature compensation and nonlinearity correction technologies ensure stable accuracy under temperature fluctuations. The on-site LCD displays real-time pressure values, and button operation allows zero-point shifting and range adjustment without additional tools. This approach combines the advantages of both analog and digital technologies, making it suitable for dynamic monitoring and static control.

Main Advantages

The Nexisense digital explosion-proof pressure transmitter demonstrates multiple advantages in petrochemical and automation fields. First is high safety: the flameproof structure and certified protection level ensure stable operation in hazardous areas and reduce potential accident risks. Second is ease of operation: the LCD display and on-site buttons support rapid calibration, significantly reducing commissioning time.

Strong adaptability is another key feature: the two-wire design allows easy replacement of traditional devices and supports HART integration into modern control systems. Reliable accuracy is ensured through digital compensation technology, minimizing errors and providing excellent long-term stability. In addition, the transmitter offers outstanding environmental resistance, including anti-interference and corrosion resistance, making it suitable for continuous operation. These features help enterprises improve efficiency while controlling maintenance costs.

Application Scenario Analysis

In the petrochemical industry, digital explosion-proof pressure transmitters are used for monitoring raw material transfer pipelines, reactors, and storage tanks, providing accurate pressure data to support process adjustment and safety alarms. In flammable and explosive workshops, the explosion-proof enclosure ensures that the device does not become an ignition source.

In industrial automation, they are applied in hydraulic and pneumatic systems, light industry and metallurgical production lines, and process control systems. Data is transmitted in real time to PLC or DCS systems to achieve closed-loop regulation. The on-site display function allows operators to monitor conditions conveniently without interrupting production.

Other application scenarios include natural gas processing and pharmaceutical equipment. The deployment of Nexisense products in these fields helps achieve intelligent management and effective risk prevention.

Technical Parameter Reference

Typical measurement range of the Nexisense digital explosion-proof pressure transmitter is 0–100 MPa (customizable), with an accuracy of ±0.25%FS. Output is 4–20 mA (HART optional), power supply 12–36 VDC, two-wire system.

Explosion protection rating is Exd II CT6 Gb, ingress protection IP67, and operating temperature range −40°C to 80°C. It features an LCD display with button calibration. Overload capacity is 200%FS, response time < 10 ms. Process connections are M20×1.5 or G1/2, with 316L stainless steel wetted parts. Selection should consider the process medium and environment to ensure compatibility.

Installation and Maintenance

Installation must be completed in a non-explosive area, using explosion-proof cable sealing. After fixation, grounding should be checked. Commissioning is carried out via button settings for zero and range, with optional remote configuration using HART tools.

Maintenance includes quarterly inspection of the enclosure and display, with cleaning using a soft cloth and neutral detergent. Annual calibration is recommended using a standard pressure source. In explosion-proof areas, the integrity of flameproof gaps should be inspected to prevent corrosion. Nexisense design simplifies maintenance, extends service life, and reduces downtime.

FAQ

How is the digital display operated?
Zero-point and range adjustments are completed via on-site buttons without disassembly.

Which control systems are supported?
The 4–20 mA signal is compatible with traditional systems, while HART supports digital integration.

How is it applied in high-temperature environments?
Wide temperature compensation ensures stable operation from −40°C to 80°C; isolation measures are recommended beyond this range.

Which hazardous areas are covered by the explosion-proof certification?
The Exd II CT6 Gb certification is suitable for Zone 1 and Zone 2 hazardous areas.

Conclusion

With its safety-focused design, precise measurement performance, and convenient operation features, the Nexisense digital explosion-proof pressure transmitter provides comprehensive support for petrochemical and industrial automation applications. From on-site display to remote communication, each function contributes to production optimization. Standardized use and maintenance can maximize its value and promote safer and more efficient industry development. It is recommended to select models based on specific operating conditions to build a reliable measurement and control system.