Bronkhorst

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 ranges between 0,05…5 g/h and 2…200 g/h (which corresponds with 0,66 …66,6 mln/min up to 0,03…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 range (intermediate ranges available)min. 0,05…5 g/h;
max. 2…200 g/h
Mass flow accuracyLiquid: ±0,2% of rate;
Gas: ±0,5% of rate
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
Leak integrity, outboardOutboard < 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 abs (higher on request)
Process connectionscompression type or face seal (VCR/VCO) couplings (welded)
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, 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/IP2 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
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

Downloads

Brochures
mini CORI-FLOW ML120 brochure

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

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

Dimensional drawing
Dimensional drawing ML120

Solids 3D
ML120Vxx 1-16 compr.type


BRONKHORST (UK) Ltd

1 Kings Court
Willie Snaith Road
Newmarket Suffolk CB8 7TG
Tel. +44 1223 833222
[email protected]

      
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