E+H Promass A 500 Coriolis Flowmeter

Overview and High-Precision Measurement Principle The Endress+Hauser Promass A 500 Coriolis Flowmeter represents the pinnacle of precision measurement for low-flow applications. Operating on the proven Coriolis principle, the device generates controlled oscillation forces that directly measure mass flow, fluid density, and temperature without being affected by changes in pressure, temperature, viscosity, or flow profiles. Whether deployed for batching, dosing, or continuous monitoring, this flowmeter delivers unmatched accuracy for liquids and gases.

Innovative Design and Remote Versatility Designed as a high-performance remote system consisting of a separate transmitter and sensor, the Promass A 500 is ideal for installations subject to heavy vibrations, underground placement, or permanent immersion. The sensor features a unique, self-drainable single-tube geometry that eliminates product buildup, prevents internal clogging, and ensures hygienic integrity. Its robust wetted materials, including premium stainless steel (316/316L) and Alloy C22, guarantee superior resistance against aggressive and corrosive process fluids.

Advanced Connectivity and Smart Operation The Promass A 500 stands out for its exceptional system integration capabilities. It supports versatile communication interfaces, most notably HART protocol, allowing plant operators to stream primary and secondary dynamic variables effortlessly. The intuitive local display includes touch control and guided “Make-it-run” wizards for fast, error-free commissioning. Furthermore, integrated web server technology enables quick configuration and device monitoring via standard web browsers or mobile apps (SmartBlue) using a secure WLAN connection or CDI-RJ45 service interface.

Built-in Diagnostics and Heartbeat Technology To maximize plant availability and reduce maintenance overhead, the device incorporates advanced diagnostic functions aligned with NAMUR NE 107. Built-in Heartbeat Technology allows users to verify meter health and performance on-demand without interrupting the process, generating comprehensive verification reports for quality assurance and regulatory compliance.

Application Areas

• Chemical & Petrochemical Industry: Precise dosing and measurement of aggressive acids, solvents, and liquefied gases.

• Life Sciences & Food Processing: Hygienic applications requiring self-draining capabilities and smooth wetted surfaces.

• Oil & Gas Sector: High-pressure measurement lines and custody transfer applications.

• General Process Automation: Accurate monitoring of low-flow chemical additives, water treatment chemicals, and specialty gas flows.

 Technical Parameters

• Nominal Diameter Range: DN 1 to 4 (1/24″ to 1/8″)

• Measuring Principle: Coriolis mass flow measurement

• Max. Process Pressure: Up to 430.9 bar (6250 psi)

• Medium Temperature Range: Up to +205 °C (+401 °F)

• Ambient Temperature Range: -40 to +60 °C (-40 to +140 °F)

• Base Accuracy (Liquids): $\pm0.10\%$ o.r. (Mass/Volume flow)

• Base Accuracy (Gases): $\pm0.35\%$ o.r.

• Inputs/Outputs: Up to 4 freely configurable I/Os (Current output 4-20mA HART, pulse/frequency/switch output, relay output, status input)

• Communication Protocols: HART, optional FOUNDATION Fieldbus, PROFIBUS DP/PA, Modbus RS485, EtherNet/IP, PROFINET, Modbus TCP

• Degree of Protection: IP66/67 (Type 4X enclosure)

• Power Supply: DC 24V ($\pm20\%$) or AC 100 to 240V (-15 to $+10\%$)

FAQ

• Q: Is a field zero adjustment required after installation?

  • A: All meters are factory-calibrated under reference conditions. A field zero adjustment is generally unnecessary unless operating under extreme process temperatures, very high-viscosity media, low-pressure gas applications, or when striving for maximum accuracy at ultra-low flow rates.

• Q: How can I connect and configure the device remotely?

  • A: The device can be configured via its integrated web server using a standard web browser (via CDI-RJ45 service interface or optional WLAN), or through asset management tools like FieldCare and DeviceCare using HART protocol.

• Q: What should I do if the “Partially filled pipe” diagnostic warning appears?

  • A: Check the process pipeline for gas pockets or entrained air, ensure proper sensor orientation (avoiding highest points of pipelines), and adjust the detection limits within the setup menu if necessary.

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