Bronkhorst

mini CORI-FLOW™ MI140

Low Flow Coriolis Mass Flow Meter / Controller

  • High accuracy, excellent repeatability
  • Fast response
  • Independent of fluid properties
  • Additional density and temperature output
  • Compact, rugged (IP66/IP67) design, screw terminal connection
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mini CORI-FLOW™MI140

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

mini 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 MI140 Mass Flow Meter (MFM) is suited for highly accurate control of liquid flow in the range of 0…30 kg/h (which corresponds with 0…400 ln/min when used on nitrogen) at operating pressures up to 200 bar. The instruments are equipped with a robust IP66/IP67 weatherproof housing with screw terminal connections.

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 ratesLiquid: 0…30 kg/h (nominal flow rate: 10 kg/h);
Gas: 0…400 ln/min (N2);
Full Scale (FS) value user-configurable
Mass flow accuracyLiquid: ≤±0,1% Rd (of Reading), at calibration conditions at FS value;
Gas: ≤±0,5% Rd
Volume flow accuracyLiquid: ≤ ±0,2% Rd, at fixed density value;
Gas: ≤ ±0,5% Rd
RepeatabilityLiquid mass flow: ≤ ±0,05% Rd ± ½ZS (Zero Stability);
Gas mass flow: ≤ ±0,25% Rd ± ½ZS;
Density: ≤ ±1 kg/m3 (at calibration conditions at stable flow)
Turndown ratioup to 1:1000 (in digital mode)
Zero stability (ZS)< ± 6 g/h
(Guaranteed at constant temperature and for unchanging process and environment conditions.)
Response time (sensor)200 msec
Fluid temperature max-20 … +70 °C
Ambient temperature max-20 … +70 °C
MountingAny position, attitude sensitivity negligible.
External shocks or vibrations should be avoided.
Temperature sensitivity0,5 g/h/°C
Temperature accuracy± 0,5 °C
Density accuracy< ± 1 kg/m³ (at calibration conditions at stable flow), up to 2500 kg/m3
Max. fluid viscosity5000 cP
Leak integrity, outboardtested < 2 x 10-9 mbar l/s He
Warm-up time> 30 min for optimum accuracy
Mechanical parts
Sensorsingle tube, DN 1.14, Ra ≤0,8 µm
Material (wetted parts)stainless steel 316L / 1.4404
Housingstainless steel 316L / 1.4404;
silicon seal (bottom), NBR seal (cover)
Pressure rating (PN)200 bar abs
Process connectionscompression type or face seal (VCR/VCO) couplings, or Tri-Clamp flanges (welded)
Sealsnone (in fluid path)
Weight6 kg
Ingress protectionIP66/IP67
Electrical properties
Power supply+15…24 Vdc +/- 10%
Max. ripple recommended: 50 mV tt
Max. power consumptionmeter: max. 3 W;
controller: max 7 W
Analog output0…5 (10) Vdc, min. load impedance > 2 kΩ;
0 (4)…20 mA (sourcing),
  regular, max. load impedance < 375 Ω;
  with HART, load impedance 250...600 Ω
Analog setpoint(for MFM + pump or control valve)
0…5 (10) Vdc, min. load impedance > 100 kΩ
0 (4)…20 mA (sourcing), max. load impedance ~ 250 Ω
Digital communicationstandard: RS232;
options: CANopen®, DeviceNet™, EtherCAT®, PROFIBUS DP, PROFINET, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK, FLOW-BUS or HART
Electrical connection
Analog/RS232M20 gland
PROFIBUS DPM20 gland
CANopen® / DeviceNet™M20 gland
FLOW-BUS/Modbus-RTU/ASCIIM20 gland
Modbus TCP / EtherNet/IP / POWERLINKM20 gland
EtherCAT®/ PROFINETM20 gland
Control valve options
External actuator options to be connected to the controller
Ex-proof specifications
Approvals / certificates

Technical specifications subject to change without notice.

Control valve options
MI140+C0I: Gas flow control valve Kv-max= 6,6 x 10-2
MI140+C2I: Liquid flow control valve Kv-max= 2,3 x 10-3
MI140+C5I: Gas/Liquid flow control valve Kv-max= 6,6 x 10-2
MI140+F-004AI: Gas/Liquid flow control Kv-max= 3,0 x 10-1


Technical specifications and dimensions subject to change without notice.
Actual form, fit, function is subject to change in next release. 

For dimensional drawings and hook-up diagrams please visit the product page on our website

Downloads

Brochures
Datasheet Industrial mini CORI-FLOW Series MI1N0
mini CORI-FLOW overview brochure
CORI-FILL brochure

Manuals
Industrial mini CORI-FLOW manual

Hook-up diagrams
Analog I/O, RS232 and HART
FLOW-BUS
Modbus RTU/ASCII
PROFIBUS DP
Ethernet interfaces (EtherCAT, EtherNet/IP, Modbus-TCP, POWERLINK, PROFINET)
Optional Bus and IO Configurations

Dimensional drawing
Dimensional drawing MI1x0
Dimensions Weld Adapters


BRONKHORST (UK) Ltd

1 Kings Court
Willie Snaith Road
Newmarket Suffolk CB8 7TG
Tel. +44 1223 833222
sales@bronkhorst.co.uk

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