Endress+Hauser Proline Promass A 200 Coriolis Flowmeter
The Endress+Hauser Proline Promass A 200 is a compact Coriolis flowmeter designed for accurate measurement of the lowest liquid and gas flow rates. With its single-tube sensor, loop-powered transmitter and compact construction, it is particularly suitable for demanding process applications where precise low-flow measurement, space efficiency and reliable operation are required.
The Promass A 200 uses the Coriolis mass flow measurement principle, providing direct mass flow measurement together with volume flow, density and temperature information. It is especially suitable for applications involving very small quantities in the chemical industry and other continuous process systems.
Accurate Measurement at Very Low Flow Rates
The key advantage of the Promass A 200 is its ability to measure very small flow quantities accurately.
The sensor is available in nominal diameters from DN1 to DN4 (1/24 to 1/8"), with a measuring range of up to 450 kg/h. This makes it suitable for applications where conventional flowmeters may struggle to provide reliable measurement at very low flow rates.
Typical applications include precision dosing, chemical injection, laboratory-scale processes and compact process equipment.
High-Accuracy Coriolis Measurement
The Promass A 200 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
Because Coriolis technology directly measures mass flow, the instrument can provide accurate process measurement without relying on separate pressure and temperature compensation for the primary mass flow measurement.
Compact Single-Tube Sensor
The Promass A sensor features a compact, lightweight single-tube design that helps reduce installation space and overall system footprint.
The measuring tube is self-draining, supporting process safety and applications where complete drainage of the measuring line is important. The sensor is also designed to resist corrosive ambient conditions and internal clogging.
The nominal diameter range of DN1 to DN4 makes the Promass A 200 particularly suitable for small process lines and equipment packages.
High-Pressure Flow Measurement
Despite its compact size, Promass A 200 is designed for demanding high-pressure applications.
The maximum process pressure can reach 430.9 bar (6250 psi), while the medium temperature range extends from -50 to +205 °C (-58 to +401 °F), depending on the configuration.
This combination of very low flow measurement and high-pressure capability makes the Promass A 200 suitable for specialized chemical and process applications.
Loop-Powered Technology
A major distinction of the Promass A 200 is its genuine loop-powered transmitter.
Loop-powered technology allows the instrument to operate using the existing current loop, simplifying electrical installation and making it attractive for applications where compact wiring and straightforward system integration are important.
The transmitter also features a separate connection compartment, while the display provides touch control and background lighting for convenient operation.
Safe Operation in Hazardous Areas
Promass A 200 is available with an intrinsically safe Ex ia design, providing a solution for hazardous-area applications.
Worldwide approvals and certifications, including SIL and hazardous-area approvals, allow the instrument to be configured for demanding industrial environments where process safety is a key consideration.
Suitable for Liquids, Gases and Density Measurement
The Promass A 200 can be configured for several measurement tasks, including:
Liquid flow measurement
Gas flow measurement
Density measurement
Concentration measurement
The instrument can provide mass flow, volume flow, density and temperature information, making it useful for process monitoring and quality control in chemical and other process industries.
Self-Draining Measuring Tube
The self-draining single-tube measuring system is an important feature for process applications where residual product inside the measuring tube needs to be minimized.
This design also helps reduce the risk of internal product accumulation and supports reliable operation in demanding process environments.
Heartbeat Technology
The Promass A 200 incorporates Endress+Hauser Heartbeat Technology, providing integrated verification and diagnostic functions.
Heartbeat Technology enables users to assess instrument performance and verify measurement reliability without removing the flowmeter from the process. This can support preventive maintenance, process reliability and reduced downtime.
Typical Applications
The Endress+Hauser Proline Promass A 200 is suitable for:
Very low-flow liquid measurement
Very low-flow gas measurement
Chemical injection
Precision dosing
Chemical process control
Continuous process measurement
Density and concentration measurement
High-pressure process measurement
Hazardous-area applications
Compact skid systems
Laboratory and pilot processes
Process equipment and OEM systems
Key Features
Coriolis mass flowmeter
Designed for very low flow rates
Compact 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
Loop-powered transmitter
Self-draining measuring tube
Compact and lightweight construction
Intrinsically safe Ex ia option
Hazardous-area and SIL approvals
Density and concentration measurement
Heartbeat Technology
Touch-control display
Suitable for demanding chemical and process applications
