Pressure reducing regulator with Endress+Hauser Proline Prowirl D200 vortex flowmeter and Cerabar PTC31B temperature transmitter

The Endress+Hauser Cerabar PTC31B is a premium, fully-featured digital pressure transmitter engineered for the most demanding process applications where superior accuracy, exceptional reliability, and comprehensive functionality are non-negotiable. It sits at the top of the Cerabar product line, representing the pinnacle of Endress+Hauser's pressure measurement technology. It is specifically designed to tackle complex challenges in critical industries such as oil and gas, chemical and petrochemical, power generation, and primary pharmaceutical manufacturing, where process safety, plant availability, and measurement integrity are paramount.

The Cerabar PTC31B is built around the advanced Ceraphire™ sensor, a single-crystal, sapphire-based sensor system. This represents a significant technological evolution from the standard ceramic sensors found in other models. The sensor consists of a unique, weld-seated sapphire diaphragm and a sapphire body, creating an extremely stable and robust measurement cell. The deflection of the diaphragm under process pressure is measured via an optical interferometric principle, which is inherently highly precise and immune to the electromagnetic interference that can affect traditional capacitive sensors. This cutting-edge technology results in unparalleled performance characteristics, including exceptional long-term stability, virtually zero hysteresis, and superior resistance to extreme static pressures and temperature fluctuations. The all-welded, oil-free sensor assembly eliminates potential leak points and ensures compatibility with a vast range of aggressive and ultra-pure media.

1. Unmatched Accuracy and Stability: The PTC31B delivers best-in-class accuracy, typically as high as ±0.03% of the calibrated span. The sapphire sensor's inherent properties ensure this accuracy is maintained over time, drastically reducing measurement uncertainty and the need for recalibration. This makes it ideal for custody transfer, fiscal metering, and other applications where even the smallest measurement error has significant financial or safety implications.

2. Enhanced Process Safety (SIL 3): A defining feature of the PTC31B is its capability to be used in the highest level of safety instrumented systems. It is certified for SIL 3 according to IEC 61508/IEC 61511 standards. This means a single device can be used to perform critical safety functions, such as high-integrity overpressure protection (HIPPS), without the need for redundant hardware in many cases, simplifying system design while maximizing safety.

3. Advanced Diagnostics and Heartbeat Technology: The transmitter is equipped with Endress+Hauser's proprietary Heartbeat Technology, which provides continuous on-demand self-monitoring and verification. It can automatically detect a wide range of potential issues, from sensor and electronics failures to process anomalies like blockages in impulse lines or leaks. This functionality supports predictive maintenance strategies, ensures compliance with proof test intervals for safety loops, and guarantees unprecedented process reliability, preventing unscheduled shutdowns.

4. Future-Proof Digital Integration: The PTC31B is designed for the digital plant of today and tomorrow. It natively supports all major digital communication protocols, including 4...20 mA HART, PROFIBUS PA, FOUNDATION Fieldbus, and Modbus RS485. This ensures seamless and lossless integration into any process control system or asset management platform, enabling advanced data utilization and centralized device management.

5. Robustness for Extreme Conditions: Built to perform in the harshest environments, the PTC31B boasts a rugged, all-welded stainless steel housing with a high ingress protection rating (IP66/67/69K). It is available with a wide range of process connections and diaphragm materials (e.g., Hastelloy, Gold) to handle highly corrosive, abrasive, or viscous media. Its performance remains stable under extreme conditions of temperature and pressure.

• Custody transfer and fiscal metering of natural gas or other hydrocarbons.

• Critical pressure measurement in safety instrumented systems (SIS) up to SIL 3.

• High-pressure and high-temperature applications in refinery and petrochemical processes.

• Chemical reactor pressure monitoring and control.

• Precision pressure control in pilot plants and advanced research facilities.

The Endress+Hauser Cerabar PTC31B is not merely a pressure transmitter; it is a sophisticated process safety and optimization tool. Its revolutionary sapphire sensor technology, combined with SIL 3 capability, powerful integrated diagnostics, and full digital connectivity, positions it as the ultimate solution for the most challenging and critical measurement points in modern industry. It is the instrument of choice for engineers who require the absolute highest level of performance, safety, and operational intelligence to protect their assets and optimize their processes.