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
Settling time (in control, typical)1 sec.
Operating temperature max0 70 °C
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
Material (wetted parts)stainless steel 316L or comparable
Pressure rating (PN)5 bar abs (higher on request)
Process connectionscompression type or face seal 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, DeviceNet™, PROFINET, EtherCAT®, Modbus RTU or ASCII, 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
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
PROFIBUS DP
PROFINET
CANopen
Optional Bus and IO Configurations

Dimensional drawing
Dimensional drawing ML120

Solids 3D
ML120Vxx 1-16 compr.type



Bronkhorst USA inc.

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

     
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