mini CORI-FLOW™ M12V11I

Low Flow Coriolis Mass Flow Controller for Gases

  • High accuracy, excellent repeatability
  • Fast response
  • Independent of fluid properties
  • Additional density and temperature output
  • Compact, rugged (IP65) design
  • Optional ATEX approval Cat.3, Zone 2
  • Valve function: Normally Opened
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mini CORI-FLOW™M12V11I

Low Flow Coriolis Mass Flow Controller for 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 M12V11I Mass Flow Controller (MFC) is suited for highly accurate control of gas flow ranges between 0,1…5 g/h and 4…200 g/h (which corresponds with 1,33…66,6 mln/min up to 0,05…2,66 ln/min when used on nitrogen) at operating pressures up to 100 bar (higher on request). 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 mass flow control by means of an integrated control valve (normally opened).

Technical specifications

Measurement / control system
Flow range (intermediate ranges available)min. 0,1…5 g/h;
max. 4…200 g/h
Mass flow accuracy± 0,5 % of rate
Repeatability±0,05% of rate ± ½(ZS* x 100/actual flow)%
Turndown ratio1:50
Zero stability (ZS)≤ ± 0,1 g/h
(Guaranteed at constant temperature and for unchanging process and environment conditions.)
Settling time (in control, typical)1 sec. (typical)
Temperature effecton zero: < 0,01 g/h/°C;
on span: < 0,001% Rd/°C;
self heating (at zero flow): < 15°C
(Depends on flow rate, heat capacity fluid, T amb., T fluid and cooling capacity.)
Operating temperature0 … 70 °C ;
for ATEX Cat.3, Zone 2 max. 50°C
MountingAny position, attitude sensitivity negligible.
Instrument to be rigidly bolted to a stiff and heavy mass or construction for guaranteed zero stability.
External shocks or vibrations should be avoided.
Temperature accuracy± 0,5 °C
Density accuracy≤ ± 5 kg/m³
Max. Kv-value3,4 x 10-4
Leak integrity, outboard< 2 x 10-9 mbar l/s He
Warm-up time> 30 min. for optimum accuracy
Mechanical parts
Sensorsingle tube, DN 0.25
Valve seatKalrez®-6375, other on request
Material (wetted parts)stainless steel 316L or comparable
Housingstainless steel 430F
Pressure rating (PN)100 bar abs
Process connectionscompression type or face seal couplings (welded)
Weight1,5 kg
Ingress protectionIP65 (weatherproof)
Electrical properties
Power supply+15…24 Vdc +/- 10%;
Max. ripple recommended: 50 mV tt
Max. power consumptionmax. 7 W
Analog output0…5 (10) Vdc, min. load impedance > 2 kΩ;
0 (4)…20 mA (sourcing), max. load impedance < 375 Ω
Analog setpoint0…5 (10) Vdc, min. load impedance > 100 kΩ;
0 (4)…20 mA (sourcing), max. load impedance ~ 250 Ω
Digital communicationstandard: RS232;
options: PROFIBUS DP, DeviceNet™, Modbus RTU or FLOW-BUS
Electrical connection
Analog/RS2328-pin DIN (male);
PROFIBUS DPbus: 5-pin M12 (female);
power: 8-pin DIN (male);
CANopen® / DeviceNet™5-pin M12 (male);
FLOW-BUS/Modbus-RTU/ASCII5-pin M12 (male);
Control valve options
External actuator options to be connected to the controller
Ex-proof specifications
Approvals / certificates

Technical specifications subject to change without notice.

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


MINI CORI-FLOW M12-M14 brochure

MINI CORI-FLOW Quick Installation Guide


Hook-up diagrams
Analog I-O RS232

Dimensional drawing
Meters - compression type weld adapters
Meters - VCR type machined adapters
Controllers - compression type weld adapters
Controllers - VCR type machined adapters
C5I Controllers - compression type weld adapters
C2I Controllers - compression type weld adapters
Controllers - on a 2 kg mass block
Controllers - on a 4 kg mass block

Bronkhorst USA inc.

57 South Commerce Way
Suite 120
USA - Bethlehem, PA 18017 
Tel.  +1-610-866-6750
[email protected]

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