CORI-FLOW Coriolis Flow Meters/ Controllers

Low Flow Coriolis Mass Flow Meters / Controllers for Liquid and Gases

CORI-FLOW™ Mass Flow Meters and Controllers are precise and compact instruments, based on the Coriolis measuring principle, designed to cover the needs of the low flow market. Bronkhorst^® model M54 Mass Flow Meter (MFM) is suited for highly accurate measurement of gas or liquid flow in the range of 0...100 kg/h (which corresponds with 0…1333 l_n/min when used on nitrogen) at operating pressures up to 200 bar. The instruments are equipped with a robust IP65 weatherproof housing and are optionally available with ATEX approval for use in Zone 2 hazardous areas.

The instrument contains a microprocessor based pc-board with signal and fieldbus conversion and a PID controller for optional mass flow control by means of a separately mounted control valve or pump.

Technical specifications

Measurement / control system

Flow rates	Liquid: 0…100 kg/h (nominal flow rate: 50 kg/h); Gas: 0…1333 ln/min (N2); Full Scale (FS) value is user-configurable










Mass flow accuracy	Liquid: ±0,2% Rd; Gas: ±0,5% Rd


Repeatability	± 0,1 % RD
Turndown ratio	up to 1:100





Zero stability (ZS)	< ± 0,05 kg/h (Guaranteed at constant temperature and for unchanging process and environmental conditions.)



















Operating temperature	standard: 0…70°C; max. 50°C for ATEX Cat.3, Zone 2; max. 120°C for special version with remote electronics (130°C ≤ 1 hour allowed for CIP)


Mounting	Any position, attitude sensitivity negligible; External shocks or vibrations should be avoided.













Leak integrity, outboard	tested < 2 x 10^-9 mbar l/s He




Warm-up time	> 30 min for optimum accuracy

Mechanical parts







Material (wetted parts)	stainless steel 316L or comparable; optional: Hastelloy-C22


Pressure rating (PN)	200 bar abs





Process connections	compression type or face seal (VCR/VCO) couplings, or Tri-Clamp flanges (welded)

Seals	metal

Ingress protection	IP65 (weatherproof)

Electrical properties

Power supply	+15…24 Vdc +/- 10% Max. ripple recommended: 50 mV tt


Max. power consumption	Meter: approx. 80 mA at 15 Vdc







Analog output	0…5 (10) Vdc, min. load impedance > 2 kΩ; 0 (4)…20 mA (sourcing), max. load impedance < 375 Ω
Analog setpoint	(for MFM + pump or control valve) 0…5 (10) Vdc, min. load impedance > 424 kΩ; 0 (4)…20 mA (sourcing), max. load impedance ~ 250 Ω






Digital communication	standard: RS232; options: PROFIBUS DP, DeviceNet™, Modbus RTU or FLOW-BUS

Electrical connection
Analog/RS232	8-pin DIN (male);



PROFIBUS DP	bus: 5-pin M12 (female); power: 8-pin DIN (male);
CANopen® / DeviceNet™	5-pin M12 (male);

FLOW-BUS/Modbus-RTU/ASCII	5-pin M12 (male);

Control valve options





M54+C0I: Gas flow control valve	Kv-max= 6,6 x 10^-2
M54+C2I: Liquid flow control valve	Kv-max= 2,3 x 10^-3
M54+C5I: Gas/Liquid flow control valve	Kv-max= 6,6 x 10^-2
M54+F-004AI: Gas/Liquid flow control	Kv-max= 3,0 x 10^-1
M54+F-004BI: Gas/Liquid flow control	Kv-max= 1,0

External actuator options to be connected to the controller

Ex-proof specifications

Approvals / certificates

Downloads

Brochures
CORI-FLOW M54-M55 brochure
CORI-FILL brochure

Manuals
Manual CORI-FLOW
Manual CORI-FILL

Certificates
ATEX: KEMA 10ATEX0111X
KCs certificate

Hook-up diagrams
Analog I-O RS232
DeviceNet
FLOW-BUS
Modbus
PROFIBUS DP

Dimensional drawing
M52 - M53 - M54 - M55 Mass Flow Meters
M5x MFM with C0I - C2I control valve
M5x MFM with C5I control valve
M5x MFM with F-004AI control valve
Dimensions Weld Adapters