Critical Technical Advantages
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Multivariable Measurement: The Prowirl F 200 is more than a flowmeter; it is a complete energy computer. It simultaneously measures volume flow, temperature, and pressure. This allows the device to calculate the mass and energy of steam and gases in real-time, compensating for density changes without the need for an external flow computer.
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Wet Steam Detection and Measurement: In steam systems, “wet” steam (steam containing water droplets) carries less energy and can damage turbines or heat exchangers. The Prowirl F 200 can monitor steam quality (dryness fraction) and provide an alarm or a corrected mass flow value when wet steam is detected, protecting downstream assets.
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PremiumCal Accuracy: With the PremiumCal calibration option, the device offers exceptional linearity even at low Reynolds numbers (down to $Re$ 10,000). This ensures that the meter remains highly accurate during periods of low production or standby, where other vortex meters often fail to provide reliable data.
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Robust Capacitive Sensor: The patented DSC (Differential Switched Capacitive) sensor is designed to be primary-drift-free. It is resistant to temperature shocks and water hammer—common occurrences in steam lines—ensuring long-term calibration stability and a service life exceeding many years without maintenance.
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Heartbeat Technology: This integrated diagnostic suite provides continuous monitoring of the entire device, from the sensor to the electronics. It allows for traceable verification of the meter’s health according to ISO 9001, providing documented proof of performance without process interruption.
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Industrial Siphon Design: For versions with integrated pressure measurement, a unique siphon design protects the pressure cell from the high temperatures of steam. This allows the pressure sensor to be positioned flexibly, making installation easier in tight piping configurations.
Detailed Technical Performance Matrix
| Specification | Technical Details and Ranges |
| Measured Variables | Volume flow, temperature, pressure |
| Calculated Variables | Mass flow, energy flow, heat flow, steam quality |
| Nominal Diameter | DN 15 to 300 (1/2″ to 12″) |
| Accuracy (Steam/Gas) | ±0.9% (o.r.) / PremiumCal: ±0.6% |
| Accuracy (Liquids) | ±0.75% (o.r.) |
| Medium Temperature | –200 to +400 °C (–328 to +752 °F) |
| Max. Pressure | Up to PN 100 / ASME Class 600 |
| Communication | HART, PROFIBUS PA, FOUNDATION Fieldbus, Modbus RS485, EtherNet/IP, PROFINET |
Primary Applications
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Steam Energy Balancing: Measuring the mass and energy of saturated or superheated steam for boiler efficiency and internal cost allocation.
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Compressed Air Management: High-accuracy tracking of air consumption, compensated for pressure and temperature fluctuations to identify leaks and optimize compressor usage.
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Industrial Gas Measurement: Monitoring nitrogen, oxygen, argon, and other process gases in chemical and manufacturing plants.
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Cryogenic Applications: Accurate flow measurement of liquefied gases down to –200 °C.
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Wet Steam Monitoring: Protecting expensive equipment by detecting liquid carryover in steam distribution networks.
