Bronkhorst

LIQUI-FLOW™ L23

數顯熱式液體質量流量計

  • 快速準確的測量信號
  • 對安裝位置不敏感
  • 非常小的內部體積
  • 適用於低沸點液體
  • 模擬、RS232 或現場總線通信
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LIQUI-FLOW™L23

Liquid Mass Flow Meters for low flow rates

Bronkhorst® model L23 Liquid Flow Meters (LFMs) are suited for precise measurement of flow ranges between 2…100 g/h and 20...1000 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.

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 DeviceNet™, PROFIBUS DP, Modbus, EtherCAT® or FLOW-BUS protocols.


Technical specifications

Measurement / control system
Flow range (intermediate ranges available)min. 2…100 g/h
max. 20…1000 g/h
(based on H2O)
Accuracy (incl. linearity) (based on actual calibration)± 1 % FS
Repeatability< 0,2 % FS (typical H2O)
Turndown ratio1:50 (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 protectionIP40
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/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);
EtherCAT®/ PROFINET2 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 series L10-L20 brochure
Manuals
General manual digital instruments
Operating instructions digital instruments
Hook-up diagrams
Analog IO - RS232
DeviceNet
EtherCAT
FLOW-BUS
Modbus
PROFIBUS DP
Dimensional drawing
Dimensional drawing LIQUI-FLOW L23


台灣柏朗豪斯特股份有限公司

新竹縣竹北市台元街三十八號四樓之一、二
Rm. 1 & 2, 4F., No.38, Taiyuan St., Zhubei City, Hsinchu County 302, Taiwan (R.O.C.)
電話 +886 3-5600-518
[email protected]

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