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Datasheet L13I

LIQUI-FLOW™ 'Industrial Style' L13I

Digital Thermal Liquid Mass Flow Meter, Industrial Style

  • Fast and accurate measuring signal
  • Insensitive to mounting position
  • Suitable for liquids with low boiling points
  • Analog, RS232 or fieldbus communication
  • Rugged, IP65 enclosure

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LIQUI-FLOW™ 'Industrial Style'L13I

Liquid Mass Flow Meters for low flow rates, industrial style

Bronkhorst® model L13I Liquid Flow Meters (LFMs) are suited for precise measurement of flow ranges between 0,25…5 g/h and 5...100 g/h at operating pressures up to 100 bar. The LFM consists of a thermal mass flow sensor and a microprocessor based pc-board with signal and fieldbus conversion and a PID controller for optional mass flow control by means of a separately mounted control valve. The "Industrial Style" LIQUI-FLOW™ model is of rugged design (IP65) for use in industrial environments.

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%)
Operating temperature5 … 50 °C
Temperature sensitivity± 0,1% FS/°C
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
Process connectionscompression type or face seal (VCR/VCO) couplings
SealsFFKM/Kalrez®; other on request
Ingress protectionIP65
Electrical properties
Power supply+15 … 24 Vdc +/-10%
Max. power consumption meter
Supply
15 V
24 V		 at voltage I/O
100 mA
65 mA		 at current I/O
120 mA
85 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/RS2328 DIN (male)
PROFIBUS DPbus: 5-pin M12 (female);
power: 8 DIN (male)
CANopen® / DeviceNet™5-pin M12 (male)
FLOW-BUS/Modbus-RTU/ASCII5-pin M12 (male)
Modbus TCP / EtherNet/IP / POWERLINKbus: 2 x 5-pin M12 (female) (in/out);
power: 8 DIN (male);
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
FLOW-BUS
Modbus RTU/ASCII
PROFIBUS DP
Industrial Ethernet (EtherCAT, EtherNet/IP, Modbus-TCP, POWERLINK, PROFINET)
CANopen
Optional Bus and IO Configurations
Dimensional drawing
Dimensional drawing L13I
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®!