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Datasheet ML120V21

mini CORI-FLOW™ ML120V21

(Ultra) Low Flow Coriolis Mass Flow Controller

  • High accuracy
  • Fast response
  • Independent of fluid properties
  • Additional density and temperature output
  • Compact, space saving design
  • Very small internal volume
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mini CORI-FLOW™ML120V21

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 ln/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 ratesLiquid: 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 accuracyLiquid: ±0,2% Rd;
Gas: ±0,5% Rd
Repeatability± 0,05 % of rate ± ½(ZS* x 100/actual flow)%
Turndown ratio1:100
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 effecton 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 temperature0 … 70 °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 (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
Sensorsingle tube, DN 0.25; frequency 170 Hz ± 20 Hz
Valvepiezoelectric 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 connectionscompression type or face seal (VCR/VCO) couplings
SealsKalrez®
Weight0,9 kg
Ingress protectionIP40
Electrical properties
Power supply+15…24 Vdc +/- 10%
Max. ripple recommended: 50 mV tt
Max. power consumptionmax. 3 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, CANopen®, DeviceNet™, PROFINET, EtherCAT®, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK, FLOW-BUS
Electrical connection
Analog/RS2329-pin D-connector (male);
PROFIBUS DPbus: 9-pin D-connector (female);
power: 9-pin D-connector (male);
CANopen® / DeviceNet™5-pin M12-connector (male);
FLOW-BUS/Modbus-RTU/ASCIIRJ45 modular jack;
Modbus TCP / EtherNet/IP / POWERLINK2 x RJ45 modular jack (in/out);
EtherCAT®/ PROFINET2 x RJ45 modular jack (in/out);
Control valve options
External actuator options to be connected to the controller
Certification for hazardous areas
Approvals / certificates

Technical specifications subject to change without notice.

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

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
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Bronkhorst High-Tech designs and manufactures innovative instruments and subsystems for low-flow measurement and control for use in laboratories, machinery and industry. Driven by a strong sense of sustainability and with many years of experience, we offer an extensive range of (mass) flow meters and controllers for gases and liquids, based on thermal, Coriolis and ultrasonic measuring principles. Our global sales and service network provides local support in more than 40 countries. Discover Bronkhorst®!