Specs at a glance
-
Max. measurement error
Mass flow (liquid): ±0.1 %
Volume flow (liquid): ±0.1 %
Mass flow (gas): ±0.5 %
Density (liquid): ±0.0005 g/cm³ -
Measuring range
0 to 450 kg/h (0 to 16.5 lb/min)
-
Medium temperature range
–50 to +205 °C (–58 to +401 °F)
-
Max. process pressure
PN 40, Class 300, 20K, 400 bar (5800 psi)
-
Wetted materials
Measuring tube: 1.4539 (904L); Alloy C22, 2.4602 (UNS N06022)
Connection: 1.4539 (904L); Alloy C22, 2.4602 (UNS N06022); 1.4404 (316/316L)
Field of application
Promass A is known for its highly accurate measurement of small quantities of liquids and gases for high pressure and low pressure. Combined with the smallest transmitter housing available today it delivers full performance on the smallest footprint. Promass A 100 is the preferred choice for system integrators, skid builders and equipment manufacturers. Available with an ultra-compact stainless steel hygienic housing it can be placed even into the most compact rigs.
Measuring principle operates independently of physical fluid properties such as viscosity or density
Measuring accurately smallest quantities of liquids and gases for continuous process control.
Device properties
Nominal diameter: DN 1 to 4 (1/24 to 1/8")
Process pressure up to 400 bar (5800 psi)
Medium temperature up to +205 °C (+401 °F)
Robust, ultra-compact transmitter housing
High ingress protection: IP69K
Local display available
Benefits
Highest process safety – self-drainable measuring tube design
Fewer process measuring points – multivariable measurement (flow, density, temperature)
Space-saving installation – no in/outlet run needs
Space-saving transmitter – full functionality on the smallest footprint
Time-saving local operation without additional software and hardware – integrated web server
Integrated verification – Heartbeat Technology
Videos
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The Coriolis Flow Measuring Principle
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Introduction of Proline Web server
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
-
Measuring principle
Coriolis
-
Product headline
The single-tube flowmeter for smallest flow quantities with an ultra-compact transmitter.
Measuring accurately smallest quantities of liquids and gases for continuous process control. -
Sensor features
Highest process safety – self‐drainable measuring tube design. Fewer process measuring points – multivariable measurement (flow, density, temperature). Space‐saving installation – no in-/outlet run needs.
Nominal diameter: DN 1 to 4 (¹⁄₂₄ to ¹⁄₈"). Process pressure up to 400 bar (5800 psi). Medium temperature up to +205 °C (+401 °F). -
Transmitter features
Space‐saving transmitter – full functionality on the smallest footprint. Time‐saving local operation without additional software and hardware – integrated web server. Integrated verification – Heartbeat Technology.
Robust, ultra-compact transmitter housing. Highest degree of protection: IP69. Local display available. -
Nominal diameter range
DN 1 to 4 (¹⁄₂₄ to ¹⁄₈")
-
Wetted materials
Measuring tube: 1.4539 (904L); Alloy C22, 2.4602 (UNS N06022)
Connection: 1.4539 (904L); Alloy C22, 2.4602 (UNS N06022); 1.4404 (316/316L) -
Measured variables
Mass flow, density, temperature, volume flow, corrected volume flow, reference density, concentration
-
Max. measurement error
Mass flow (liquid): ±0.1 %
Volume flow (liquid): ±0.1 %
Mass flow (gas): ±0.5 %
Density (liquid): ±0.0005 g/cm³ -
Measuring range
0 to 450 kg/h (0 to 16.5 lb/min)
-
Max. process pressure
PN 40, Class 300, 20K, 400 bar (5800 psi)
-
Medium temperature range
–50 to +205 °C (–58 to +401 °F)
-
Ambient temperature range
Standard: –40 to +60 °C (–40 to +140 °F)
Option: –50 to +60 °C (–58 to +140 °F) -
Sensor housing material
1.4301 (304), corrosion resistant
-
Transmitter housing material
Compact: AlSi10Mg, coated
Compact/ultra‐compact: 1.4301 (304) -
Degree of protection
Standard: IP66/67, type 4X enclosure
Option: IP69 -
Display/Operation
4‐line backlit display available (no local operation)
Configuration via web browser and operating tools possible -
Outputs
4‐20 mA HART (active)
Pulse/frequency/switch output (passive) -
Inputs
None
-
Digital communication
HART, Modbus RS485, EtherNet/IP, PROFIBUS DP, PROFINET
-
Power supply
DC 20 to 30 V
-
Hazardous area approvals
ATEX, IECEx, cCSAus, INMETRO, NEPSI, EAC
-
Other approvals and certificates
-
Product safety
CE, C-Tick, EAC marking
-
Metrological approvals and certificates
Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025)
Heartbeat Technology complies with the requirements for measurement traceability according to ISO 9001:2015 – Section 7.1.5.2 a (TÜV SÜD attestation) -
Pressure approvals and certificates
CRN
-
Material certificates
3.1 material
-
Hygienic approvals and certificates
3-A, EHEDG, cGMP
-
Measuring principle
Coriolis
-
Product headline
The single-tube flowmeter for smallest flow quantities with an ultra-compact transmitter.
Measuring accurately smallest quantities of liquids and gases for continuous process control. -
Sensor features
Highest process safety – self‐drainable measuring tube design. Fewer process measuring points – multivariable measurement (flow, density, temperature). Space‐saving installation – no in-/outlet run needs.
Nominal diameter: DN 1 to 4 (¹⁄₂₄ to ¹⁄₈"). Process pressure up to 400 bar (5800 psi). Medium temperature up to +205 °C (+401 °F). -
Transmitter features
Space‐saving transmitter – full functionality on the smallest footprint. Time‐saving local operation without additional software and hardware – integrated web server. Integrated verification – Heartbeat Technology.
Robust, ultra-compact transmitter housing. Highest degree of protection: IP69. Local display available. -
Nominal diameter range
DN 1 to 4 (¹⁄₂₄ to ¹⁄₈")
-
Wetted materials
Measuring tube: 1.4539 (904L); Alloy C22, 2.4602 (UNS N06022)
Connection: 1.4539 (904L); Alloy C22, 2.4602 (UNS N06022); 1.4404 (316/316L) -
Measured variables
Mass flow, density, temperature, volume flow, corrected volume flow, reference density, concentration
-
Max. measurement error
Mass flow (liquid): ±0.1 %
Volume flow (liquid): ±0.1 %
Mass flow (gas): ±0.5 %
Density (liquid): ±0.0005 g/cm³ -
Measuring range
0 to 450 kg/h (0 to 16.5 lb/min)
-
Max. process pressure
PN 40, Class 300, 20K, 400 bar (5800 psi)
-
Medium temperature range
–50 to +205 °C (–58 to +401 °F)
-
Ambient temperature range
Standard: –40 to +60 °C (–40 to +140 °F)
Option: –50 to +60 °C (–58 to +140 °F) -
Sensor housing material
1.4301 (304), corrosion resistant
-
Transmitter housing material
Compact: AlSi10Mg, coated
Compact/ultra-compact: 1.4301 (304) -
Degree of protection
Standard: IP66/67, type 4X enclosure
Option: IP69 -
Display/Operation
4‐line backlit display available (no local operation)
Configuration via web browser and operating tools possible -
Outputs
4‐20 mA HART (active)
Pulse/frequency/switch output (passive) -
Inputs
None
-
Digital communication
HART, Modbus RS485, EtherNet/IP, PROFIBUS DP, PROFINET
-
Power supply
DC 20 to 30 V
-
Hazardous area approvals
ATEX, IECEx, cCSAus, INMETRO, NEPSI, EAC
-
Product safety
CE, C-Tick, EAC marking
-
Metrological approvals and certificates
Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025), NAMUR
Heartbeat Technology complies with the requirements for measurement traceability according to ISO 9001:2015 – Section 7.1.5.2 a (TÜV SÜD attestation) -
Pressure approvals and certificates
CRN
-
Material certificates
3.1 material
-
Hygienic approvals and certificates
3-A, EHEDG, cGMP
-
Measuring principle
Coriolis
-
Product headline
The single-tube flowmeter for smallest flow quantities with an ultra-compact transmitter.
Measuring accurately smallest quantities of liquids and gases for continuous process control. -
Sensor features
Highest process safety – self‐drainable measuring tube design. Fewer process measuring points – multivariable measurement (flow, density, temperature). Space‐saving installation – no in-/outlet run needs.
Nominal diameter: DN 1 to 4 (¹⁄₂₄ to ¹⁄₈"). Process pressure up to 400 bar (5800 psi). Medium temperature up to +205 °C (+401 °F). -
Transmitter features
Space‐saving transmitter – full functionality on the smallest footprint. Time‐saving local operation without additional software and hardware – integrated web server. Integrated verification – Heartbeat Technology.
Robust, ultra-compact transmitter housing. Highest degree of protection: IP69. Local display available. -
Nominal diameter range
DN 1 to 4 (¹⁄₂₄ to ¹⁄₈")
-
Wetted materials
Measuring tube: 1.4539 (904L); Alloy C22, 2.4602 (UNS N06022)
Connection: 1.4539 (904L); Alloy C22, 2.4602 (UNS N06022); 1.4404 (316/316L) -
Measured variables
Mass flow, density, temperature, volume flow, corrected volume flow, reference density, concentration
-
Max. measurement error
Mass flow (liquid): ±0.1 %
Volume flow (liquid): ±0.1 %
Mass flow (gas): ±0.5 %
Density (liquid): ±0.0005 g/cm³ -
Measuring range
0 to 450 kg/h (0 to 16.5 lb/min)
-
Max. process pressure
PN 40, Class 300, 20K, 400 bar (5800 psi)
-
Medium temperature range
–50 to +205 °C (–58 to +401 °F)
-
Ambient temperature range
Standard: –40 to +60 °C (–40 to +140 °F)
Option: –50 to +60 °C (–58 to +140 °F) -
Sensor housing material
1.4301 (304), corrosion resistant
-
Transmitter housing material
Compact: AlSi10Mg, coated
Compact/ultra-compact: 1.4301 (304) -
Degree of protection
Standard: IP66/67, type 4X enclosure
Option: IP69 -
Display/Operation
4‐line backlit display available (no local operation)
Configuration via web browser and operating tools possible -
Outputs
4‐20 mA HART (active)
Pulse/frequency/switch output (passive) -
Inputs
None
-
Digital communication
HART, Modbus RS485, EtherNet/IP, PROFIBUS DP, PROFINET
-
Power supply
DC 20 to 30 V
-
Hazardous area approvals
ATEX, IECEx, cCSAus, INMETRO, NEPSI, EAC
-
Product safety
CE, C-Tick, EAC marking
-
Metrological approvals and certificates
Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025), NAMUR
Heartbeat Technology complies with the requirements for measurement traceability according to ISO 9001:2015 – Section 7.1.5.2 a (TÜV SÜD attestation) -
Pressure approvals and certificates
CRN
-
Material certificates
3.1 material
-
Hygienic approvals and certificates
3-A, EHEDG, cGMP
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