In the world of subsea oil and gas exploration, precision and durability are non-negotiable. ESI Technology, a leading manufacturer of high-performance pressure measurement solutions, continues to set the benchmark. Designed specifically to perform under extreme subsea conditions, this advanced sensor offers reliability, safety, and high accuracy in demanding offshore applications.

At ESI Technology, our commitment to innovation and engineering excellence is reflected in the PR3920 differential subsea pressure transmitter, developed to meet the rigorous demands of subsea environments. With cutting-edge features, robust construction, and a proven track record in subsea deployment, this transmitter is trusted by industry leaders worldwide.

Built on Silicon-on-Sapphire Sensor Technology

A standout feature of the PR3920 differential subsea pressure transmitter is its use of silicon-on-sapphire (SOS) sensor technology. This highly stable and durable sensing platform provides exceptional performance across a wide temperature range and high-pressure conditions. By bonding the silicon strain gauge to a sapphire substrate, we ensure minimal signal drift and long-term stability. The result is precise differential pressure measurement even after prolonged submersion at great depths.

Engineered for Subsea Extremes

With a standard sensing range of 0-50 bar DP and a line pressure capability of up to 690 bar, the PR3920 differential subsea pressure transmitter is specifically engineered to meet the pressure challenges of subsea systems. The design includes a remarkable secondary containment pressure of up to 1,200 bar, offering enhanced safety in the event of process failure or seal compromise.

Built to operate in depths of up to 3,000 meters below sea level, this transmitter withstands the crushing pressure of deep-sea environments while continuing to deliver reliable performance. Whether used in ROVs, subsea manifolds, or wellhead monitoring, the transmitter provides operators with critical data needed to maintain system integrity and efficiency.

Corrosion Resistance and Compliance

Subsea environments present not only pressure challenges but also aggressive corrosive conditions due to seawater exposure. The PR3920 differential subsea pressure transmitter features NACE-compliant construction, ensuring resistance to sulphide stress cracking and corrosion. This is critical for long-term reliability in offshore applications where exposure to harsh chemicals and saline environments is common.

To address the safety needs of hazardous zones, ESI Technology offers the PR3920 differential subsea pressure transmitter with optional ATEX and IECEx certifications. These options allow safe integration in explosive atmospheres typically encountered in offshore drilling platforms and subsea production facilities.

Customised Testing and Documentation Packages

At ESI Technology, we recognise that no two projects are the same. That’s why the PR3920 differential subsea pressure transmitter can be supplied with a range of customised test and certification packages. Hyperbaric testing ensures that the device performs reliably at simulated depth conditions, while Environmental Stress Screening (ESS) verifies its robustness under fluctuating temperature and vibration profiles.

Comprehensive documentation packages are also available to meet the traceability and quality requirements of global offshore operators. These include material certificates, test data, calibration reports, and compliance declarations to support seamless project integration and audit readiness.

High Accuracy Performance

Precision is at the core of what we do at ESI Technology. The PR3920 differential subsea pressure transmitter is available with a high-accuracy option, making it suitable for applications that demand superior measurement precision. Accurate differential pressure readings are essential for managing flow, filtration, and other dynamic processes in subsea production systems. Our sensors help ensure that decisions are based on reliable and consistent data.

Trusted by Industry Professionals

As a specialist in subsea and hazardous-area pressure instrumentation, ESI Technology has earned a reputation for delivering robust and trusted solutions. The PR3920 differential subsea pressure transmitter is the result of decades of engineering experience, quality manufacturing, and close collaboration with subsea system designers. Our in-house design, manufacturing, and testing capabilities enable us to respond quickly to specific customer requirements, ensuring each unit meets the highest standards of performance and reliability.

Conclusion

The PR3920 differential subsea pressure transmitter from ESI Technology is a robust, high-accuracy, and corrosion-resistant solution designed for the world’s toughest underwater conditions. From its advanced silicon-on-sapphire sensor technology to its hyperbaric test options and industry-compliant certifications, every aspect of the transmitter is crafted to deliver performance and peace of mind. Whether deployed at the seafloor or integrated into critical subsea infrastructure, it’s the reliable choice for pressure measurement in the deep.

To learn more about how ESI Technology can support your subsea pressure measurement needs, contact our team today.