Bronkhorst

LIQUI-FLOW™ L13V12

Digital Thermal Liquid Mass Flow Controller

  • Fast and accurate measuring signal
  • Insensitive to mounting position
  • Very small internal volume
  • Suitable for liquids with low boiling points
  • Analog, RS232 or fieldbus communication
Get a quote Downloads Datasheet
LIQUI-FLOW™L13V12

Liquid Mass Flow Controllers for low flow rates

Bronkhorst® model L13V12 Liquid Flow Controllers (LFCs) are suited for precise measurement and control of flow ranges between 0,25…5 g/h and 5...100 g/h at operating pressures up to 100 bar. The LFC consists of a thermal mass flow sensor and 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.

LIQUI-FLOW™ series are equipped with a digital pc-board, offering high accuracy, excellent temperature stability and fast response. The main digital pc-board contains all of the general functions needed for measurement and control. In addition to the standard RS232 output the instruments also offer analog I/O. As an option, an on-board interface can be mounted to provide CANopen®, DeviceNet™, EtherCAT®, PROFIBUS DP, PROFINET, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK or FLOW-BUS protocols.


Technical specifications

Measurement / control system
Flow range (intermediate ranges available)min. 0,25…5 g/h
max. 5…100 g/h
(based on H2O)
Accuracy (incl. linearity) (based on actual calibration)± 1 % FS
Repeatability< 0,2 % FS (typical H2O)
Turndown ratioFS <50 g/h : 1:20 (5...100%);
FS >50 g/h : 1:50 (2...100%)
Settling time (in control, typical)< 2 sec.
Operating temperature5 … 50 °C
Temperature sensitivity± 0,1% FS/°C
Max. Kv-value2,37x10-3
Attitude sensitivitynegligible
Warm-up time30 min. for optimum accuracy;
2 min for accuracy ± 2% FS
Mechanical parts
Material (wetted parts)stainless steel 316L/320
Pressure rating (PN)100 bar abs
Max. ΔP10 bar dif.
Process connectionscompression type or face seal (VCR/VCO) couplings
Purge connection1/16” OD compression type
SealsFFKM/Kalrez®; other on request
Ingress protectionIP40
Electrical properties
Power supply+15 … 24 Vdc +/-10%
Max. power consumption
Supply
15 V
24 V
at voltage I/O
285 mA
250 mA
at current I/O
305 mA
270 mA
extra for fieldbus
<75 mA
<50 mA
Analog output0…5 (10) Vdc or 0 (4)…20 mA (sourcing output)
Digital communicationstandard: RS232;
options: CANopen®, DeviceNet™, EtherCAT®, PROFIBUS DP, PROFINET, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK or 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)
EtherCAT®2 x RJ45 modular jack (in/out)
FLOW-BUS/Modbus-RTU/ASCIIRJ45 modular jack
Modbus TCP / EtherNet/IP / POWERLINK2 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
LIQUI-FLOW brochure
Manuals
Manual LIQUI-FLOW incl u-FLOW
Hook-up diagrams
Analog IO - 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 LIQUI-FLOW L13V12