Product Critical Technical Advantages
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Engineering excellence in micro-flow sensitivity allows the Promass A to capture the smallest fluctuations in mass flow and density. Its specialized sensor geometry is optimized for DN 1 to 4 (1/24″ to 1/8″) line sizes, ensuring that even a few drops per minute are measured with industrial-grade reliability and repeatability.
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Precision engineering for high-pressure containment enables the meter to operate safely at pressures up to 400 bar (5800 psi). This makes it indispensable for high-pressure chemical injection and gas dosing applications where standard low-flow meters would suffer from mechanical fatigue or failure.
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Integration of operational intelligence through Heartbeat Technology provides a continuous internal health check of the measuring tubes and electronics. This integrated verification is critical for micro-flow applications, as it can detect minimal coating or abrasion that might otherwise lead to significant measurement drift in small-bore systems.
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Space-saving transmitter integration delivers the complete functionality of a high-end Coriolis meter in an ultra-compact housing. This design is specifically tailored for skid builders who must fit multiple measurement points into tight laboratory or production modules without sacrificing performance or digital connectivity.
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Highest process safety through a self-drainable design ensures that no residual fluid remains trapped within the measuring tube. This feature is vital for preventing localized corrosion and ensuring high-purity standards, especially when handling expensive or reactive specialty chemicals.
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Seamless local operation via the integrated web server allows for rapid commissioning and maintenance without the need for additional software or proprietary hardware. This “plug-and-play” capability reduces the time required for system setup and troubleshooting in complex, multi-meter environments.
Key Device Specifications
| Feature | Specification |
| Nominal Diameter | DN 1 to 4 (1/24″ to 1/8″) |
| Max. Process Pressure | 400 bar (5800 psi) |
| Medium Temperature | Up to +205 °C (+401 °F) |
| Ingress Protection | IP66/67/69 (Hygienic stainless steel available) |
| Measuring Variables | Mass flow, density, temperature, volume flow |
| Connectivity | EtherNet/IP, PROFINET, Modbus RS485, IO-Link |
Field of Application
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Chemical Dosing & Injection: The premier choice for the high-precision injection of catalysts, inhibitors, and additives into high-pressure process streams.
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Laboratory & Pilot Plants: Ideally suited for research environments where small-scale reactions require exact mass balance and real-time density monitoring.
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Gas Odorization: Used to accurately dose minute amounts of odorants into natural gas lines, ensuring safety compliance through precise mass flow control.
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Specialized Coating Systems: Ensures the consistent application of high-value coatings or lubricants in manufacturing processes where flow rates are extremely low.
