Endress+Hauser Proline Promass A 500 Coriolis Flowmeter
The Endress+Hauser Proline Promass A 500 is a high-precision Coriolis flowmeter designed for accurate measurement of the smallest liquid and gas flow rates. It combines a compact single-tube sensor with a remote transmitter, making it suitable for demanding process applications where accurate low-flow measurement, installation flexibility and reliable process monitoring are required.
The Promass A 500 uses the Coriolis measurement principle, which provides direct mass flow measurement and is largely independent of fluid properties such as viscosity and density. In addition to mass flow, the instrument can measure volume flow, density and temperature, making it suitable for applications requiring multiple process variables from a single measuring point.
Designed for the Smallest Flow Rates
Promass A 500 is specifically designed for applications involving very small flow quantities. Its single-tube sensor is available in nominal diameters from DN1 to DN4 (1/24 to 1/8"), with a measuring range up to 450 kg/h.
This makes the flowmeter particularly suitable for:
Very low liquid flow measurement
Very low gas flow measurement
Precision dosing
Chemical injection
Continuous process control
Laboratory and pilot processes
Compact process skids
OEM process equipment
High-Accuracy Coriolis Measurement
The Promass A 500 provides high measurement accuracy for both liquids and gases:
Liquid mass flow: ±0.1%
Liquid volume flow: ±0.1%
Gas mass flow: ±0.35%
Liquid density: ±0.0005 g/cm³
Direct Coriolis mass flow measurement reduces the need for separate pressure and temperature compensation for the primary mass flow measurement, making the Promass A 500 a practical solution for precise process measurement.
Compact Single-Tube Sensor
The Promass A 500 features a compact and lightweight single-tube sensor designed for space-saving installation.
The measuring tube is self-drainable in all available line sizes, helping minimize residual product inside the sensor and supporting reliable process operation. The sensor is also designed to resist corrosive ambient conditions and internal clogging.
The wetted measuring tube is available in 1.4435 stainless steel (316/316L) and Alloy C22, depending on the selected configuration.
High-Pressure Low-Flow Measurement
Although designed for extremely small flow rates, Promass A 500 can operate under demanding pressure conditions.
The maximum process pressure is 430.9 bar (6250 psi), while the medium temperature range extends from -50 to +205 °C (-58 to +401 °F), depending on configuration.
This combination of very low flow measurement and high-pressure capability makes Promass A 500 particularly useful for specialized chemical and process applications.
Remote Transmitter for Flexible Installation
A major feature distinguishing the Promass A 500 from the A 300 is its remote transmitter configuration.
The sensor and transmitter are connected by a standard cable, allowing the transmitter to be installed separately from the measuring point. This provides greater flexibility when the sensor is installed in a restricted or difficult-to-access location.
The remote transmitter supports up to four I/Os, providing access to process and diagnostic information through flexible I/O and fieldbus configurations.
Flexible Connectivity and Digital Integration
The Proline transmitter provides numerous freely configurable I/O functions and fieldbus communication options.
This allows Promass A 500 to integrate into modern PLC, DCS and industrial automation systems, while reducing the need for multiple transmitter variants.
The transmitter also features a backlit display with touch control and WLAN access, simplifying commissioning, configuration and day-to-day operation.
Measurement of Liquids, Gases and Density
Promass A 500 supports several measurement tasks, including:
Mass flow
Volume flow
Corrected volume flow
Density
Reference density
Temperature
Density/concentration applications
This multivariable capability makes it suitable for process control, material monitoring and applications where accurate measurement of very small quantities is required.
Process Safety and Approvals
Promass A 500 is available with a range of industrial and hazardous-area approvals, including ATEX, IECEx, cCSAus, INMETRO and NEPSI.
Functional safety according to IEC 61508, applicable to safety-relevant applications in accordance with IEC 61511, is also supported. Hygienic approvals include 3-A and cGMP for applicable configurations.
Heartbeat Technology
The Promass A 500 incorporates Endress+Hauser Heartbeat Technology, providing integrated verification and diagnostic functions.
Heartbeat Technology helps users verify measurement performance and obtain device condition information without removing the flowmeter from the process. It can therefore support preventive maintenance, measurement traceability and improved plant availability.
Typical Applications
The Endress+Hauser Proline Promass A 500 is suitable for:
Very low-flow liquid measurement
Very low-flow gas measurement
Precision dosing
Chemical injection
Chemical process control
Pharmaceutical processing
Biotechnology applications
Density and concentration measurement
High-pressure process measurement
Compact process skids
OEM equipment
Laboratory and pilot plants
Continuous process monitoring
Key Features
Coriolis mass flowmeter
Designed for the smallest flow rates
Single-tube sensor
Nominal diameter DN1–DN4
Measuring range up to 450 kg/h
Liquid mass flow accuracy ±0.1%
Gas mass flow accuracy ±0.35%
Liquid density accuracy ±0.0005 g/cm³
Process pressure up to 430.9 bar
Medium temperature up to +205 °C
Compact, lightweight sensor
Self-drainable measuring tube
Remote transmitter
Up to 4 I/Os
Touch-control display
WLAN access
Flexible digital communication
Heartbeat Technology
ATEX, IECEx and other hazardous-area approvals
3-A and cGMP options
