Specs at a glance
-
Max. measurement error
Mass flow (liquid): ±0.1 %
Volume flow (liquid): ±0.1 %
Mass flow (gas): ±0.35 % Density (liquid): ±0.0005 g/cm³ -
Measuring range
0 to 450 kg/h (0 to 16.54 lb/min)
-
Medium temperature range
-50 to 205 °C (-58 to 401 °F)
-
Max. process pressure
430.9 bar (6250 psi)
-
Wetted materials
Measuring tube: stainless steel, 1.4435 (316/316L); Alloy C22
Field of application
The compact Promass A is ideal for continuous process control in demanding applications. Its unique self-drainable single-tube system enables accurate measurement of liquids and gases at lowest flow rates and high pressure. With its cost-effective genuine loop-powered technology and intrinsically safe design (Ex ia), Promass A 200 offers highest operational safety in hazardous areas. Heartbeat Technology ensures safe processes.
Measuring principle operates independently of physical fluid properties such as viscosity or density
Suitable for applications with smallest flow quantities in the chemical industry.
Device properties
Nominal diameter: DN 1 to 4 (1/24 to 1/8")
Process pressure up to 430.9 bar (6250 psi)
Medium temperature up to +205 °C (+401 °F)
Loop-powered technology
Robust dual-compartment housing
Plant safety: worldwide approvals (SIL, Haz. area)
Benefits
Space-saving installation – compact, lightweight sensor
Highest product quality – self-drainable measuring tube design in all line sizes
Optimum process safety – resistant to corrosive ambient conditions and internal clogging
Convenient device wiring – separate connection compartment
Safe operation – no need to open the device due to display with touch control, background lighting
Integrated verification – Heartbeat Technology
Videos
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Proline Promass A – the lightweight champion for lowest flow rates
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The Coriolis Flow Measuring Principle
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
-
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
Genuine loop-powered flowmeter for accurate measurement of lowest flow rates.
Suitable for applications with smallest flow quantities in the chemical industry. -
Sensor features
Space-saving installation – compact, lightweight sensor. Highest product quality – self-drainable measuring tube design in all line sizes. Optimum process safety – resistant to corrosive ambient conditions and internal clogging.
Nominal diameter: DN 1 to 4 (¹⁄₂₄ to ¹⁄₈"). Process pressure up to 430.9 bar (6250 psi). Medium temperature up to +205 °C (+401 °F). -
Transmitter features
Convenient device wiring – separate connection compartment. Safe operation – no need to open the device due to display with touch control, background lighting. Integrated verification – Heartbeat Technology.
Loop-powered technology. Robust dual-compartment housing. Plant safety: worldwide approvals (SIL, Haz. area). -
Nominal diameter range
DN 1 to 4 (¹⁄₂₄ to ¹⁄₈")
-
Wetted materials
Measuring tube: stainless steel, 1.4435 (316/316L); Alloy C22
-
Measured variables
Mass flow, density, temperature, volume flow, corrected volume flow, reference density
-
Max. measurement error
Mass flow (liquid): ±0.1 %
Volume flow (liquid): ±0.1 %
Mass flow (gas): ±0.35 % Density (liquid): ±0.0005 g/cm³ -
Measuring range
0 to 450 kg/h (0 to 16.54 lb/min)
-
Max. process pressure
430.9 bar (6250 psi)
-
Medium temperature range
-50 to 205 °C (-58 to 401 °F)
-
Ambient temperature range
-40 to 60 °C (-40 to +140 °F)
-
Sensor housing material
Stainless steel, 1.4404 (316L)
-
Transmitter housing material
Stainless steel, CF-3M (316L, 1.4404)
AlSi10MG, coated -
Degree of protection
IP66/67, Type 4X enclosure
-
Display/Operation
4-line backlit display with touch control (operation from outside)
Configuration via local display and operating tools possible
Remote display available -
Outputs
4‐20 mA HART (passive)
4‐20 mA (passive)
Pulse/frequency/switch output (passive) -
Inputs
None
-
Digital communication
HART, PROFIBUS PA, FOUNDATION Fieldbus
-
Power supply
DC 18 to 35 V (4‐20 mA HART with/without
pulse/frequency/switch)
DC 18 to 30 V (20 mA HART, 4‐20 mA)
DC 9 to 32 V (PROFIBUS PA) -
Hazardous area approvals
ATEX, IECEx, cCSAus, INMETRO, NEPSI, UK Ex
-
Product safety
CE, C-TICK
-
Functional safety
Functional safety according to IEC 61508, applicable in safety-relevant applications in accordance with IEC 61511
-
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, cGMP
-
Measuring principle
Coriolis
-
Product headline
Genuine loop-powered flowmeter for accurate measurement of lowest flow rates.
Suitable for applications with smallest flow quantities in the chemical industry. -
Sensor features
Space-saving installation – compact, lightweight sensor. Highest product quality – self-drainable measuring tube design in all line sizes. Optimum process safety – resistant to corrosive ambient conditions and internal clogging.
Nominal diameter: DN 1 to 4 (¹⁄₂₄ to ¹⁄₈"). Process pressure up to 430.9 bar (6250 psi). Medium temperature up to +205 °C (+401 °F). -
Transmitter features
Convenient device wiring – separate connection compartment. Safe operation – no need to open the device due to display with touch control, background lighting. Integrated verification – Heartbeat Technology.
Loop-powered technology. Robust dual-compartment housing. Plant safety: worldwide approvals (SIL, Haz. area). -
Nominal diameter range
DN 1 to 4 (¹⁄₂₄ to ¹⁄₈")
-
Wetted materials
Measuring tube: stainless steel, 1.4435 (316/316L); Alloy C22
-
Measured variables
Mass flow, density, temperature, volume flow, corrected volume flow, reference density
-
Max. measurement error
Mass flow (liquid): ±0.1 %
Volume flow (liquid): ±0.1 %
Mass flow (gas): ±0.35 % Density (liquid): ±0.0005 g/cm³ -
Measuring range
0 to 450 kg/h (0 to 16.54 lb/min)
-
Max. process pressure
430.9 bar (6250 psi)
-
Medium temperature range
-50 to 205 °C (-58 to 401 °F)
-
Ambient temperature range
-40 to 60 °C (-40 to +140 °F)
-
Sensor housing material
Stainless steel, 1.4404 (316L)
-
Transmitter housing material
Stainless steel, CF-3M (316L, 1.4404)
AlSi10MG, coated -
Degree of protection
IP66/67, Type 4X enclosure
-
Display/Operation
4-line backlit display with touch control (operation from outside)
Configuration via local display and operating tools possible
Remote display available -
Outputs
4‐20 mA HART (passive)
4‐20 mA (passive)
Pulse/frequency/switch output (passive) -
Inputs
None
-
Digital communication
HART, PROFIBUS PA, FOUNDATION Fieldbus
-
Power supply
DC 18 to 35 V (4‐20 mA HART with/without
pulse/frequency/switch)
DC 18 to 30 V (20 mA HART, 4‐20 mA)
DC 9 to 32 V (PROFIBUS PA) -
Hazardous area approvals
ATEX, IECEx, cCSAus, INMETRO, NEPSI, UK Ex
-
Product safety
CE, C-TICK
-
Functional safety
Functional safety according to IEC 61508, applicable in safety-relevant applications in accordance with IEC 61511
-
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, cGMP
-
Measuring principle
Coriolis
-
Product headline
Genuine loop-powered flowmeter for accurate measurement of lowest flow rates.
Suitable for applications with smallest flow quantities in the chemical industry. -
Sensor features
Space-saving installation – compact, lightweight sensor. Highest product quality – self-drainable measuring tube design in all line sizes. Optimum process safety – resistant to corrosive ambient conditions and internal clogging.
Nominal diameter: DN 1 to 4 (¹⁄₂₄ to ¹⁄₈"). Process pressure up to 430.9 bar (6250 psi). Medium temperature up to +205 °C (+401 °F). -
Transmitter features
Convenient device wiring – separate connection compartment. Safe operation – no need to open the device due to display with touch control, background lighting. Integrated verification – Heartbeat Technology.
Loop-powered technology. Robust dual-compartment housing. Plant safety: worldwide approvals (SIL, Haz. area). -
Nominal diameter range
DN 1 to 4 (¹⁄₂₄ to ¹⁄₈")
-
Wetted materials
Measuring tube: stainless steel, 1.4435 (316/316L); Alloy C22
-
Measured variables
Mass flow, density, temperature, volume flow, corrected volume flow, reference density
-
Max. measurement error
Mass flow (liquid): ±0.1 %
Volume flow (liquid): ±0.1 %
Mass flow (gas): ±0.35 % Density (liquid): ±0.0005 g/cm³ -
Measuring range
0 to 450 kg/h (0 to 16.54 lb/min)
-
Max. process pressure
430.9 bar (6250 psi)
-
Medium temperature range
-50 to 205 °C (-58 to 401 °F)
-
Ambient temperature range
-40 to 60 °C (-40 to +140 °F)
-
Sensor housing material
Stainless steel, 1.4404 (316L)
-
Transmitter housing material
Stainless steel, CF-3M (316L, 1.4404)
AlSi10MG, coated -
Degree of protection
IP66/67, Type 4X enclosure
-
Display/Operation
4-line backlit display with touch control (operation from outside)
Configuration via local display and operating tools possible
Remote display available -
Outputs
4‐20 mA HART (passive)
4‐20 mA (passive)
Pulse/frequency/switch output (passive) -
Inputs
None
-
Digital communication
HART, PROFIBUS PA, FOUNDATION Fieldbus
-
Power supply
DC 18 to 35 V (4‐20 mA HART with/without
pulse/frequency/switch)
DC 18 to 30 V (20 mA HART, 4‐20 mA)
DC 9 to 32 V (PROFIBUS PA) -
Hazardous area approvals
ATEX, IECEx, cCSAus, INMETRO, NEPSI, UK Ex
-
Product safety
CE, C-TICK
-
Functional safety
Functional safety according to IEC 61508, applicable in safety-relevant applications in accordance with IEC 61511
-
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
PED, CRN
-
Material certificates
3.1 material
-
Hygienic approvals and certificates
3-A, cGMP
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