High Temperature Aerospace Pressure Transmitter HI6000 with Silicon-on-Sapphire Technology

In demanding aerospace applications, pressure measurement must remain stable and accurate even when exposed to extreme temperatures, vibration and chemically aggressive media. ESI Technology’s HI6000 has been designed specifically for these harsh environments, giving engineers confidence in their data and helping to keep critical systems operating safely and efficiently.

Why the high temperature aerospace pressure transmitter HI6000 is different

At the heart of the HI6000 is advanced Silicon-on-Sapphire sensor technology. This construction bonds a strain gauge circuit onto a sapphire substrate, which is then fused with titanium. The result is a highly resilient, very stable sensor element that can withstand constant media and ambient temperatures up to 135°C, and short-term exposure up to 150°C, without suffering the drift or degradation common in traditional pressure transmitters.

The transmitter’s titanium wetted parts further enhance robustness. Titanium offers excellent chemical compatibility with a wide range of hydraulic fluids, fuels and process media typically found in aerospace systems. This makes the HI6000 suitable for applications where stainless steel might be at risk of corrosion or stress cracking, extending service life and reducing maintenance requirements.

How the high temperature aerospace pressure transmitter performs in extreme environments

Aerospace systems demand absolute reliability, whether in propulsion, braking, fuel management or test stands. The HI6000 has been engineered to deliver consistent performance across a compensated temperature range from -25°C to +135°C. This wide operating window ensures measurements remain accurate even during rapid temperature swings, such as those experienced during altitude changes or engine start-up and shut-down cycles.

Pressure ranges are available up to 1,500 bar, allowing the unit to cover everything from low-pressure monitoring tasks to high-pressure hydraulic systems. A high accuracy version is also available for applications where even tighter tolerances are required, supporting more precise control loops and improved system efficiency.

The transmitter’s compact design is a significant advantage in aerospace platforms where space and weight are at a premium. By combining a small footprint with high performance, the HI6000 enables engineers to integrate reliable pressure measurement into locations that would previously have been inaccessible or impractical.

Integrating the high temperature aerospace pressure transmitter into your application

ESI Technology has developed the HI6000 to be a flexible solution that can be tailored to suit a wide variety of aerospace projects. A range of electrical outputs and pressure ranges can be specified, allowing the device to interface easily with existing control and monitoring systems. This flexibility is particularly valuable during retrofits or upgrades, where a direct replacement for older instrumentation can dramatically reduce installation time and complexity.

The rugged construction of the HI6000 means it is equally at home in development environments and production platforms. In test cells and rigs, engineers can rely on the high temperature aerospace pressure transmitter to deliver stable, repeatable measurements over long test campaigns, even when equipment is driven hard and exposed to extremes of temperature and pressure. Once designs are proven, the same technology can then be deployed on the aircraft or system itself, maintaining continuity of data from prototype through to service.

Compliance and quality assurance

Beyond performance, quality assurance is central to aerospace projects, where every component must meet stringent regulatory expectations and provide long-term confidence in mission-critical environments. The HI6000 is manufactured within ESI Technology’s AS9100D-approved quality management system, ensuring that every stage—from design control and material traceability to production, inspection and final test—follows internationally recognised aerospace standards. This formal approval gives engineers and procurement teams added assurance that the transmitters they select have been built under a rigorous, continually audited framework aligned with the requirements of major aerospace primes.

The HI6000 itself is produced using tightly controlled processes and full traceability, supporting the documentation and reliability evidence required across aerospace supply chains. Each transmitter can be supplied with calibration data, material and process records, and supporting certification, helping engineers demonstrate that their pressure measurement strategy meets internal quality procedures as well as wider industry expectations. This emphasis on documentation, repeatability and controlled change is especially valuable when multiple units are deployed across a fleet and long-term stability must be proven over many years of service.

Alongside manufacturing quality, ESI Technology offers detailed application guidance to help teams integrate the HI6000 effectively into their specific platform or subsystem. Engineers can access advice on port and connector selection, mounting arrangements, cable routing and protection from thermal or mechanical shock. This consultative support helps ensure each transmitter delivers optimum performance once installed, reduces commissioning effort and contributes to keeping programmes on schedule—an essential consideration in tightly managed aerospace development cycles.

Benefits of choosing ESI Technology for aerospace pressure measurement

When you partner with ESI Technology, you are working with a team that understands the specific challenges of aerospace engineering. From assisting with product selection to providing detailed technical support, our focus is on helping you choose the right instrumentation for your project and ensuring that it performs as expected throughout its life.

By specifying the HI6000, OEMs and system integrators can reduce the risk of unplanned downtime, improve system diagnostics and gain more reliable insight into how their equipment behaves in real-world conditions. The stability and robustness of the Silicon-on-Sapphire sensing element, combined with titanium construction and a proven track record in high temperature environments, make it an excellent choice for safety-critical and mission-critical applications.

Whether you are designing a new platform, upgrading existing systems or developing a test solution, the high temperature aerospace pressure transmitter HI6000 with Silicon-on-Sapphire technology provides a dependable foundation for accurate pressure measurement in demanding conditions. To discuss how the HI6000 can support your next aerospace project, speak to the team at ESI Technology today.