Product Critical Technical Advantages
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Engineering excellence in micro-flow sensitivity utilizes a unique single-tube design optimized for DN 1 to 4 (1/24″ to 1/8″) line sizes. This architecture provides the high sensitivity required to capture minute mass flow and density changes, ensuring stable and repeatable control for the most delicate dosing applications.
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Precision engineering for extreme pressure containment allows the Promass A 300 to operate safely and accurately at pressures up to 430.9 bar (6250 psi). This robustness is essential for high-pressure chemical injection and gas distribution systems where measurement integrity must be maintained under intense mechanical stress.
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Integration of operational intelligence through Heartbeat Technology provides continuous internal diagnostics and documented verification without interrupting the process. This feature is vital for micro-flow systems, as it can detect the slightest internal coating or tube wear, ensuring long-term measurement reliability and extending recalibration cycles.
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Full access to process and diagnostic data is enabled by the Proline 300 transmitter, which supports numerous, freely combinable I/Os and modern Ethernet-based protocols. With integrated WLAN access and a backlit display with touch control, operators can configure, maintain, and troubleshoot the device wirelessly or directly at the meter without opening the housing.
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Highest product quality through a self-drainable design ensures that no residual fluid remains trapped within the 1/4-inch or 1/8-inch tubes. This geometry is highly resistant to internal clogging and facilitates rapid cleaning, which is critical for maintaining high purity standards and preventing localized corrosion in sensitive process lines.
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Space-saving and lightweight installation allows the Promass A 300 to be integrated into compact modular skids and laboratory rigs where space is at a premium. Because the Coriolis principle is independent of the flow profile, it requires no straight inlet or outlet piping runs, providing ultimate flexibility in piping design.
Key Device Specifications
| Feature | Specification |
| Nominal Diameter | DN 1 to 4 (1/24″ to 1/8″) |
| Max. Process Pressure | 430.9 bar (6250 psi) |
| Medium Temperature | Up to +205 °C (+401 °F) |
| Transmitter Housing | Compact dual-compartment with up to 3 I/Os |
| Connectivity | Ethernet/IP, PROFINET, Modbus RS485, WLAN |
| Measuring Variables | Mass flow, density, temperature, volume flow |
Field of Application
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Specialty Chemical Industry: Ideal for the continuous, high-precision dosing of expensive catalysts, reactants, and additives where exact mass balance is required for product quality.
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High-Pressure Gas Dosing: Used in gas odorization and high-pressure fuel injection systems where small quantities of gas must be metered accurately and safely.
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Pilot Plants & Laboratories: The standard for research and development environments that require the highest data granularity and remote access to multi-variable measurement data.
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Pharmaceutical Manufacturing: Applied in the precise delivery of active ingredients into continuous manufacturing lines where a self-draining, high-pressure sensor is necessary.
