Endress+Hauser Proline Promass A 100 Coriolis Flowmeter
The Endress+Hauser Proline Promass A 100 is a highly compact single-tube Coriolis flowmeter designed for measuring very small quantities of liquids and gases. Its combination of a small nominal diameter, high measurement accuracy and ultra-compact transmitter makes it particularly suitable for applications where both precise measurement and limited installation space are important.
Promass A 100 uses the Coriolis measuring principle, allowing direct mass flow measurement while also providing density and temperature information. Because Coriolis measurement is largely independent of physical fluid properties such as viscosity and density, the instrument can provide stable measurement performance across changing process conditions.
Designed for Very Small Flow Rates
The defining characteristic of Promass A 100 is its ability to accurately measure very small liquid and gas flow rates.
The sensor is available with nominal diameters from DN1 to DN4 (1/24 to 1/8 in), with a maximum measuring range of 0 to 450 kg/h. This makes it particularly suitable for laboratory-scale processes, dosing systems, skid-mounted equipment and other applications where conventional flowmeters may not provide sufficient sensitivity at low flow rates.
High-Accuracy Coriolis Measurement
Promass A 100 provides high measurement accuracy for both liquids and gases:
Liquid mass flow: ±0.1%
Liquid volume flow: ±0.1%
Gas mass flow: ±0.5%
Liquid density: ±0.0005 g/cm³
The instrument can measure multiple process variables, including mass flow, volume flow, density, temperature, corrected volume flow, reference density and concentration.
This multivariable capability can reduce the number of separate measurement points required in compact process systems.
Single-Tube Sensor Design
The single-tube Coriolis sensor provides a compact measurement solution while maintaining the advantages of direct mass flow measurement.
The measuring tube is designed to be self-draining, supporting process safety and hygienic applications. Wetted materials include 904L stainless steel and Alloy C22, with 316/316L available for selected connections.
Ultra-Compact Transmitter
The Promass A 100 features an ultra-compact transmitter housing, providing full measurement functionality while occupying minimal installation space.
This makes the instrument particularly attractive for:
System integrators
Skid builders
Equipment manufacturers
Compact process systems
Laboratory and pilot equipment
Space-constrained installations
The transmitter is available with a local display and provides an integrated web server for convenient device operation and configuration without requiring additional software or hardware.
High-Pressure Process Applications
Despite its compact size, Promass A 100 can handle demanding process conditions.
The maximum process pressure reaches 400 bar (5800 psi), while the medium temperature range is -50 to +205 °C (-58 to +401 °F), depending on the configuration.
This combination of small-flow measurement and high-pressure capability makes Promass A 100 suitable for specialized industrial applications where both characteristics are required.
Hygienic and Hazardous Area Applications
Promass A 100 offers approvals and certifications for a range of demanding applications, including 3-A, EHEDG and cGMP hygienic approvals.
Hazardous-area approvals include ATEX, IECEx, cCSAus, INMETRO, NEPSI and EAC, depending on the selected configuration.
This allows the flowmeter to be used across pharmaceutical, chemical, process and other specialized industrial environments.
No Inlet or Outlet Straight Run Required
The Coriolis measuring principle does not require conventional upstream and downstream straight pipe sections for flow conditioning.
This space-saving installation concept is especially valuable in compact skids and equipment packages, where available pipe routing space is limited.
Heartbeat Technology and Integrated Diagnostics
Promass A 100 incorporates Endress+Hauser Heartbeat Technology, providing integrated verification and diagnostic capabilities.
Heartbeat Technology allows measurement performance to be verified without removing the instrument from the process, helping users support preventive maintenance, measurement traceability and long-term process reliability.
Digital Communication
The Proline Promass A 100 supports multiple digital communication technologies, including:
HART
Modbus RS485
EtherNet/IP
PROFIBUS DP
PROFINET
This provides flexible integration into modern PLC, DCS and industrial automation systems.
Typical Applications
The Endress+Hauser Proline Promass A 100 is suitable for:
Very low liquid flow measurement
Very low gas flow measurement
Precision dosing
Chemical injection
Laboratory process measurement
Pilot plant applications
Skid-mounted process systems
Pharmaceutical processes
Biotechnology applications
High-pressure process measurement
Compact equipment and OEM systems
Continuous process control
Key Features
Single-tube Coriolis flowmeter
Designed for very small flow quantities
Suitable for liquids and gases
Nominal diameter DN1–DN4
Measuring range up to 450 kg/h
Liquid mass flow accuracy up to ±0.1%
Gas mass flow accuracy up to ±0.5%
Liquid density accuracy up to ±0.0005 g/cm³
Process pressure up to 400 bar
Medium temperature up to +205 °C
Self-draining measuring tube
Ultra-compact transmitter
No conventional inlet/outlet straight run required
Integrated web server
Heartbeat Technology
3-A, EHEDG and cGMP approvals
Multiple digital communication options
Suitable for compact, high-pressure and low-flow applications
