mini CORI-FLOW Coriolis Flow Meter & Controller

Low Flow Coriolis Mass Flow Controllers for Gases and 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 ML120V21 Mass Flow Controller (MFC) is suited for highly accurate measurement and control of gas or liquid flow in the range of 0…200 g/h (which corresponds with 0…2,66 l_n/min when used on nitrogen) at operating pressures up to 5 bar.

The mass flow controller offers “multi-range” functionality: factory calibrated ranges can be rescaled by the user, maintaining the original accuracy specs. The instrument contains a microprocessor based pc-board with signal and fieldbus conversion and a PID controller for mass flow control by means of the integrated piezoelectric control valve.

Technical specifications

Measurement / control system

Flow rates	Liquid: 0…200 g/h (nominal flow rate: 100 g/h); Gas: 0…2.66 ln/min (N2); Full Scale (FS) value is user-configurable; advised minimum flow depends on fluid properties










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


Repeatability	± 0,05 % of rate ± ½(ZS* x 100/actual flow)%
Turndown ratio	1:100





Zero stability (ZS)	< ± 10 mg/h (Guaranteed at constant temperature and for unchanging process and environment conditions.)












Settling time (in control, typical)	1 sec.


Temperature effect	on zero: < 3 mg/h/°C; on span: < 0,005% Rd/°C; self heating (at zero flow): < 10°C (Depends on flow rate, heat capacity fluid, T amb., T fluid and cooling capacity.)



Operating temperature	0 … 70 °C


Mounting	any 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 (at full scale flow)





Leak integrity, outboard	< 2 x 10^-8 mbar l/s He




Warm-up time	> 30 min for optimum accuracy

Mechanical parts
Sensor	single tube, DN 0.25; frequency 170 Hz ± 20 Hz




Valve	piezoelectric valve (metal plunger)

Material (wetted parts)	stainless steel 316L or comparable


Pressure rating (PN)	5 bar g (higher on request); max. ΔP: 5 bar d





Process connections	compression type or face seal (VCR/VCO) couplings

Seals	Kalrez®
Weight	0,9 kg
Ingress protection	IP40

Electrical properties

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


Max. power consumption	max. 3 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, CANopen®, DeviceNet™, PROFINET, EtherCAT®, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK, FLOW-BUS

Electrical connection
Analog/RS232	9-pin D-connector (male);



PROFIBUS DP	bus: 9-pin D-connector (female); power: 9-pin D-connector (male);
CANopen® / DeviceNet™	5-pin M12-connector (male);

FLOW-BUS/Modbus-RTU/ASCII	RJ45 modular jack;

Modbus TCP / EtherNet/IP / POWERLINK	2 x RJ45 modular jack (in/out);



EtherCAT®/ PROFINET	2 x RJ45 modular jack (in/out);

Control valve options

External actuator options to be connected to the controller

Certification for hazardous areas

Approvals / certificates

Downloads

Brochures
mini CORI-FLOW ML120 brochure

Manuals
MINI CORI-FLOW ML120 manual
MINI CORI-FLOW ML120 Quick Start Guide

Hook-up diagrams
Analog I-O RS232
DeviceNet
EtherCAT
FLOW-BUS
Modbus RTU/ASCII
PROFIBUS DP
PROFINET
CANopen
EtherNet/IP
Modbus-TCP
POWERLINK
Optional Bus and IO Configurations

Dimensional drawing
Dimensional drawing ML120

Solids 3D
ML120Vxx 1-16 compr.type

mini CORI-FLOW™ ML120V21

Low Flow Coriolis Mass Flow Controllers for Gases and Liquids

Technical specifications

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