Critical Technical Advantages
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Extreme Pressure Capability: The Prowirl O is designed for safety and integrity in high-pressure steam and gas lines. It is rated for saturated steam mass flow up to PN 250 / Class 1500, ensuring reliable performance in high-energy power piping and upstream oil and gas applications.
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Multivariable Integration: The device offers integrated temperature and pressure measurement. This enables the transmitter to perform real-time density compensation, delivering accurate mass flow, heat flow, and energy readings without the need for an external flow computer.
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NACE Compliance: The sensor and meter body are fully compliant with NACE MR0175 and MR0103. This ensures the device is resistant to sulfide stress cracking, making it suitable for “sour gas” environments and other aggressive petrochemical processes.
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Premium Accuracy at Low Flow: Utilizing the same advanced meter body design as the rest of the Prowirl family, it maintains high linearity down to a Reynolds number (Re) of 10,000. This provides better process control during start-up or low-demand periods.
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Drift-Free Capacitive Sensor: The patented DSC (Differential Switched Capacitive) sensor is mechanically robust and primary-drift-free. It is designed to withstand the vibration and thermal shocks often found in high-pressure steam distribution headers.
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Heartbeat Technology: This suite allows for continuous self-monitoring and in situ verification. Operators can verify that the device is still within its original calibration specifications and generate a formal report without interrupting the high-pressure process.
Detailed Technical Performance Matrix
| Specification | Technical Details and Ranges |
| Measured Variables | Volume flow, temperature, pressure |
| Calculated Variables | Mass flow, energy flow, heat flow |
| Nominal Diameter | DN 15 to 300 (1/2″ to 12″) |
| Max. Pressure Rating | Up to PN 250 / ASME Class 1500 |
| Accuracy (Steam/Gas) | ±0.9% (o.r.) |
| Accuracy (Liquids) | ±0.75% (o.r.) |
| Medium Temperature | –200 to +400 °C (–328 to +752 °F) |
| Communication | HART, PROFIBUS PA, FOUNDATION Fieldbus, Modbus RS485, EtherNet/IP, PROFINET |
Primary Applications
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High-Pressure Steam Distribution: Monitoring the mass and energy of high-pressure superheated steam in power plants and large industrial complexes.
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Natural Gas Transmission: Accurate flow measurement in high-pressure pipelines and gas processing facilities.
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Sour Gas Service: Reliable metering in upstream oil and gas production where hydrogen sulfide (H2S) is present.
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Cryogenic High-Pressure Fluids: Measuring liquefied gases at high pressures in specialized industrial processes.
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Injection Systems: Monitoring high-pressure gas or liquid injection for enhanced oil recovery (EOR) or chemical processing.
