mini CORI-FLOW™ M12V14I

Low Flow Coriolis Mass Flow Controllers for Liquids

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 M12V14I Mass Flow Controller (MFC) is suited for highly accurate control of liquid flow ranges between 0,1…5 g/h and 4…200 g/h 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 closed).

Technical specifications

Measurement / control system
Flow range (intermediate ranges available)	min. 0,1…5 g/h max. 4…200 g/h
Mass flow accuracy	±0,2% of rate
Turndown	≥ 1:50
Repeatability	±0,05% of rate ± ½(ZS* x 100/flow)% based on digital output
Zero Stability (ZS)*	< ±0,02 g/h
Settling time (<2% of setpoint)	1 sec. (typical)
Max. Kv-value	3,4 x 10-4
Max. fluid viscosity	0.1 Pa*s
Operating temperature	0…70°C; for ATEX Cat.3, Zone 2 max. 50°C
Temperature effect**	on zero: < 0,01 g/h/°C; on span: < 0,001% Rd/°C; self heating (at zero flow): ≤ 15°C
Temperature accuracy	±0,5°C
Density accuracy	< ±5 kg/m3
Mounting***	Any position, attitude sensitivity negligible
Leak integrity (outboard)	< 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
Housing	stainless steel 430F
Sensor	single tube, DN 1.3
Pressure rating	100 bar abs
Process connections (welded)	compression type or face seal couplings
Purge connection	1/8” OD compression type or 1/8" VCR
Seals	metal
Valve seat	Kalrez®-6375, other on request
Weight	1,5 kg
Ingress protection (housing)	IP65 (weatherproof)

Electrical properties
Power supply	+15…24 Vdc +/- 10% Max. ripple recommended: 50 mV tt
Max. power consumption	max. 7 W
Analog output	0...5 (10) Vdc, min. load impedance > 2 kΩ; 0 (4)...20 mA (sourcing), max. load impedance < 375 Ω
Analog setpoint	0...5 (10) Vdc, min. load impedance > 100 kΩ; 0 (4)...20 mA (sourcing), max. load impedance ~ 250 Ω
Digital communication	standard: RS232; options: PROFIBUS DP, DeviceNet™, Modbus RTU or ASCII, FLOW-BUS

Electrical connection
Analog/RS232	8-pin DIN (male);
PROFIBUS DP	bus: 5-pin M12 (female); power: 8-pin DIN (male);
Devicenet™/FLOW-BUS/Modbus	5-pin M12 (male);

* Guaranteed at constant temperature and for unchanging process and environment conditions.
**   Depends on flow rate, heat capacity fluid, T amb., T fluid and cooling capacity.
***  To be rigidly bolted to a stiff and heavy mass or construction for guaranteed zero stability.
External shocks or vibrations should be avoided.
Technical specifications and dimensions subject to change without notice.