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 Promass 84 transmitter with touch control and a four line display Promass 84A measures accurately smallest quantities of liquids and gases for a wide range of very demanding applications. It will be the preferred solution for customers needing custody transfer measurement and using advanced functionalities like pulsating flow or fieldbuses.
● 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
● Quality – designed for custody transfer; featuring worldwide recognized metrological approvals
● Flexible data transfer options – numerous communication types
● Automatic recovery of data for servicing
● 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 2 to 4 (1/12 to 1/8″)
● Process pressure up to 400 bar (5800 psi)
● Medium temperature up to +200 °C (+392 °F)
● 4-line backlit display with touch control
● Device in compact or remote version
● Phase-shifted pulse, HART, Modbus RS485
Product headline
The single‐tube flowmeter for smallest quantities with custody transfer functionality. 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 2 to 4 (¹⁄₁₂ to ¹⁄₈”). Process pressure up to 400 bar (5800 psi).
Transmitter features
Quality – designed for custody transfer; featuring worldwide recognized metrological approvals. Flexible data transfer options – numerous communication types. Automatic recovery of data for servicing. 4‐line backlit display with touch control. Device in compact or remote version.
Nominal diameter range
DN 2 to 4 (¹⁄₁₂ 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
Max. measurement error
Mass flow (liquid): ±0.1 %
Volume flow (liquid): ±0.1 %
Mass flow (gas): ±0.5 %
Density (liquid): ±0.0005 g/cm³Measuring 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 +200 °C (–58 to +392 °F)
Ambient temperature range
Standard: –20 to +60 °C (–4 to +140 °F)
Option: –40 to +60 °C (–40 to +140 °F)Sensor housing material
1.4301 (304), corrosion resistant
Transmitter housing material
Powder‐coated die‐cast aluminium
1.4301 (304), sheet
CF3M (316L), castDegree of protection
IP67, type 4X enclosure. Remote transmitter: IP67, type 4X enclosure
Display/Operation
4‐line backlit display with touch control
(operation from outside)
Configuration via local display and operating tools possibleOutputs
4 modular outputs:
0‐20 mA (active)/4‐20 mA (active/passive)
Pulse/frequency/switch output (passive),
phase‐shifted pulse
RelayInputs
1 modular input: status
Digital communication
HART
Modbus RS485Power supply
DC 16 to 62 V
AC 85 to 260 V (45 to 65 Hz)
AC 20 to 55 V (45 to 65 Hz)Hazardous area approvals
ATEX, IECEx, FM, CSA, NEPSI, TIIS, EAC
Product safety
CE, C-tick, EAC marking
Metrological approvals and certificates
Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025), NAMUR Custody transfer approvals: MI-002 (gas), MI-005 (liquid) , PTB 7.251 (gas)
Pressure approvals and certificates
CRN
Material certificates
3.1 material
Hygienic approvals and certificates
3-A
