Do fluctuations in ambient air pressure compromise the accuracy of your process readings? For critical applications like open tank level, line pressure, or blanket pressure monitoring, you need a device that isolates the process variable from environmental noise. Yokogawa's gauge pressure transmitters leverage advanced digital DPharp sensor technology to deliver precise, reliable measurements by comparing process pressure against real-time local ambient air pressure, ensuring data integrity for your most demanding operations.

Why Choose Yokogawa Gauge Pressure Transmitters? Solving Ambient Interference & Drift Challenges

Achieve unwavering confidence in your pressure monitoring with intelligent features that directly address common industrial pain points.

• Eliminate Errors from Ambient Pressure Fluctuations: Standard pressure readings can be skewed by changing weather or facility HVAC. A Yokogawa gauge pressure transmitter features a dedicated port that samples ambient air pressure in real-time, automatically compensating for these variations. This ensures your reading—whether positive (above ambient) or negative (below ambient)—reflects true process conditions, which is essential for accurate open tank level measurement .

• Unmatched Long-Term Stability for Critical Processes: Stop scheduling unnecessary recalibrations. The core of these instruments is the digital DPharp sensor, renowned for its exceptional stability. Depending on the series, you can expect ±0.1% of URL stability for up to 15 years, drastically reducing maintenance downtime and providing unwavering confidence in long-term data trends for applications like line pressure monitoring.

• High Performance with Rapid Response: Don't let lagging data put your process at risk. With a rapid response time of 90 milliseconds, these transmitters capture pressure transients instantly. Combined with high accuracy options up to ±0.025%, you get a complete picture of your process dynamics, enabling tighter control and improved safety.

Key Features for Demanding Industrial Applications

Engineered for longevity, precision, and safety:

• Proven Sensor Technology: The DPharp digital sensor is the industry standard for reliability, using advanced silicon resonant sensor technology to provide exceptional accuracy and repeatability over a wide range of pressures and temperatures.

• Flexible Mounting Options: Choose the configuration that fits your installation. Available in both traditional-mount and in-line mount styles to simplify installation and reduce hardware costs.

• Inherent Safety & Reliability: Designed for critical applications, these transmitters are backed by FMEDA reports and IEC 61508 certification for SIL 2 applications, ensuring they meet the highest functional safety standards.

• Superior Quality Control: Manufactured to a ±3σ specification conformance, guaranteeing that the performance you specify is the performance you get, unit after unit.

Technical Specifications at a Glance

Measurement Principle & Performance

• Measurement Type: Gauge Pressure (compensated against local ambient atmospheric pressure)

• Sensor Technology: Digital DPharp (Silicon Resonant Sensor)

• Typical Applications: Open tank level, line pressure, blanket pressure, filter monitoring

• Accuracy (Available Options):

• ±0.025% of Span (High Performance Models)

• ±0.040% of Span

• ±0.055% of Span

• Long-Term Stability:

• Up to ±0.1% of URL per 15 years (EJX Series High Performance)

• ±0.1% of URL per 10 years (EJA Series Standard)

• Response Time: 90 msec (standard)

Model Series & Mounting Styles

Yokogawa offers a comprehensive range to match any requirement:

Functional Safety & Compliance

• Safety Certification: IEC 61508 certified for use in SIL 2 safety instrumented functions

• Documentation: FMEDA reports available for safety lifecycle calculations

• Quality Conformance: Manufactured to ±3σ (three-sigma) specifications

Outputs & Communication

• Analog Output: 4-20 mA HART (standard on most models)

• Digital Protocols: FOUNDATION Fieldbus, PROFIBUS PA (available options)

• Local Indication: Optional digital indicator for on-site reading

Ready to Achieve Lab-Grade Pressure Stability in Your Process?

Whether you are monitoring a critical chemical reactor level or managing pipeline pressure, Yokogawa's gauge pressure transmitters deliver the precision and reliability you need.