In subsea environments where accuracy, durability and long-term stability are essential, selecting the right pressure measurement technology is critical. At ESI Technology, we specialise in advanced pressure monitoring solutions engineered to perform in the harshest conditions on the planet. One of our leading products designed specifically for underwater and subsea monitoring is the PR3930 Subsea Pressure Transmitter. This robust instrument delivers dependable performance for oceanographic research, offshore energy operations, underwater vehicles and long-term monitoring projects.

Built for Harsh Subsea Conditions

The subsea environment presents unique challenges: extreme pressure, rapid temperature shifts, corrosion, and long-term exposure to saltwater. The PR3930 Subsea Pressure Transmitter is purpose-built to withstand these demanding conditions through expert engineering and high-quality materials.

Each unit is constructed using marine-grade stainless steel or high-performance titanium, ensuring excellent resistance to seawater corrosion. This durability allows the PR3930 to perform consistently across extended deployments without degradation or drift, reducing downtime and ensuring continuity of critical measurement data.

Precision Through Advanced Silicon-on-Sapphire Technology

At the core of the PR3930 is ESI Technology’s proprietary Silicon-on-Sapphire (SoS) sensor technology. This innovation enhances accuracy, stability and repeatability, making the transmitter a preferred choice for applications where reliable pressure data is essential.

The sapphire substrate offers exceptional hardness and thermal stability, allowing the sensor to maintain its performance even when subjected to extreme conditions. For operators working in deep-water scenarios, this means consistent measurements, reduced maintenance requirements, and confidence in the data collected.

Designed for Deepwater Performance

The PR3930 Subsea Pressure Transmitter offers pressure ranges suitable for shallow, mid-depth and deep-water applications. Whether you require accurate pressure measurement for remotely operated vehicles (ROVs), subsea hydraulic systems or environmental monitoring, the PR3930 delivers precise results even at significant depths.

Its high-integrity sealing and rugged enclosure protect internal electronics from moisture ingress, ensuring the transmitter continues to operate reliably throughout long-term deployments.

Flexible Electrical and Mechanical Options

Understanding that subsea operations vary widely, ESI Technology engineers the PR3930 with flexibility in mind. The transmitter can be supplied with a range of:

• Electrical connections

• Output signal options

• Pressure port configurations

• Material choices based on environmental needs

This allows customers to specify the exact configuration required for their application, ensuring seamless integration into existing systems. With customisation available directly through ESI Technology’s expert engineering team, you receive a measurement instrument precisely tailored to your project requirements.

Long-Term Reliability Backed by ESI Technology Expertise

Every PR3930 Subsea Pressure Transmitter is manufactured in-house at ESI Technology, ensuring full quality control from design to final product testing. Each transmitter undergoes rigorous validation under simulated subsea conditions to verify accuracy, stability and resilience.

This meticulous approach provides complete confidence for operators who rely on accurate subsea data to make critical decisions related to safety, performance and environmental monitoring.

Applications of the PR3930 Subsea Pressure Transmitter

The versatility and resilience of the PR3930 make it suitable for a wide range of underwater and offshore applications. These include:

• Subsea control systems

• Remotely operated vehicles (ROVs)

• Autonomous underwater vehicles (AUVs)

• Offshore drilling operations

• Pipeline monitoring

• Oceanographic and hydrographic research

• Environmental monitoring systems

• Subsea hydraulic equipment

In each of these settings, the transmitter delivers the precision and durability required to keep operations running smoothly.

Supporting Your Project from Concept to Deployment

Choosing the right subsea instrumentation goes beyond selecting a product from a catalogue. ESI Technology provides comprehensive support from the initial specification stage through installation and long-term maintenance. Our engineering team works closely with customers to understand their operational challenges and recommend the most appropriate configuration for optimal performance.

As pressure measurement specialists, we provide more than equipment. We deliver reliable solutions backed by decades of experience, state-of-the-art manufacturing and a dedicated team committed to ensuring your project’s success.

Why Choose ESI Technology?

When it comes to subsea pressure measurement, you need a trusted manufacturer with a proven track record. ESI Technology’s commitment to quality, innovation and customer service ensures that every PR3930 Subsea Pressure Transmitter is engineered to exceed expectations. With flexible customisation, industry-leading sensor technology, and robust construction, the PR3930 is an essential tool for subsea professionals who value reliability and performance.