What are you looking for?
Bronkhorst
Datasheet L01V12

μ-FLOW L01V12

Ultra Low-Flow 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
μ-FLOWL01V12

Liquid Mass Flow Controllers for low flow rates

Bronkhorst® model L01V12 Liquid Flow Controllers (LFCs) are suited for precise measurement and control of flow ranges between 5…100 mg/h and 0,1...2 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.

μ-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. 5…100 mg/h
max. 0,1…2 g/h
(based on H2O)
Accuracy (incl. linearity) (based on actual calibration)± 2 % FS
Repeatability< 0,2 % FS (typical H2O)
Turndown ratio1:20 (5…100%)
Settling time (in control, typical)2 … 4 sec.
Operating temperature5 … 50 °C
Temperature sensitivity± 0,2% FS/°C
Max. Kv-value2,37x10-3
Max. fluid viscosity0.1 Pa*s
Attitude sensitivitynegligible
Warm-up timeapprox.10 min. for accuracy ± 2% FS
Mechanical parts
Material (wetted parts)stainless steel 316L/320;
other on request
Pressure rating (PN)100 bar abs
Max. ΔP10 bar dif.
Process connections1/16” or 1/8” OD compression type; other on request
(<1 g/h we advise to use 1/16" only)
Purge connection1/16” OD compression type
SealsKalrez®-6375;
others 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)
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 - µ-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 μ-FLOW L01V12
Download as PDF

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®!