Alicat Scientific

LS Series Liquid Flow Meters & Controllers

Monitor liquid flows down to 0.01 ccm with the fastest meter response time available in a liquid flow meter (20 ms)

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LS Series Liquid Flow Meters Controllers 11600

 Measure flow rate, line pressure and line temperature simultaneously, all in real time.  Alicat’s liquid flow meters offer accurate flow measurement and stable control for water or other liquids, including methanol, iso-propanol, ethanol, ammonia, dimethylether, iso-pentane, thiophene, iso-octane or heptane. All liquid flow meters include bleed screws for easy removal of air pockets.

 
For liquid flow measurement without a control valve, choose our L series of fast liquid flow meters, which measure flow, pressure and temperature in real time. Our LB series adds a rechargeable battery for easy audits of liquid flows outside of your lab. 
 
Instruments in the standard L or LB series are also available with an optional “S” configuration (LS or LBS) for use with corrosive liquids.  In this configuration, the flow body is upgraded to 316L stainless steel and the elastomers to FFKM.
 
Alicat’s liquid flow meters feature dual digital and analog communications by default and can be ordered with Ethernet/IP, EtherCAT, DeviceNet, Profibus or Modbus (RTU and TCP/IP) communications for easy integration into your digital industrial or laboratory network.  Other build options include your choice of display, output, and flow totalizers as well as performance options.  Need further customization?  Contact us and we’d be happy to help you build the instrument you need.
 
Each liquid flow meter comes with a NIST-traceable calibration certificate and an Alicat operating manual.  Power supply sold separately. 

 • Non-corrosive and corrosive liquids

• 2–100% of full scale measurement range
• −10–60°C operating temperature
Volumetric Flow Accuracy at Calibration Conditions1±2% of full scale
Repeatability (2σ)±0.2% of full scale
Flow Measurement Range2–100% of full scale
Temperature SensitivityVolumetric flow zero shift: 0.02% of full scale per °C from tare temperature Volumetric flow span shift: 0.02% of full scale per °C from calibration temperature
Operating Temperature Range−10–60°C
Temperature Accuracy±0.75°C
Operating Pressure Full Scale100 PSIG
Pressure Accuracy±0.5% of full scale
Totalizer Volume Uncertainty±0.5% of reading additional uncertainty
Sensor Response Time<1 ms
Typical Indication Response Time<10 ms, flow rate dependent
Typical Warm-Up Time<1 s
Mechanical
Minimum Operating PressureDifferential pressure must exceed model pressure drop, see below for details
Maximum Operating PressureDamage possible above 200 PSIG common mode pressure Damage possible above 75 PSI differential pressure
Ingress ProtectionIP40 (consult Alicat for weatherproofing options)
Wetted Materials302, 303, 304, and 316L stainless steel; FKM (Viton)
Communications
Analog I/O Options24–20 mA, 0–5 Vdc, 1–5 Vdc, 0–10 Vdc
Digital I/O Options2RS-232 Serial by default RS-485 Serial, Modbus RTU (over RS-232 or RS-485 serial), Modbus TCP/IP, DeviceNet, EtherCAT, EtherNet/IP, PROFIBUS Portable devices (LB Series): RS-232 over Micro-USB Type B
Electrical Connection Options6-pin locking, 8-pin mini-DIN, 8-pin M12, DB-9, DB-15 (contact Alicat for custom pinouts) Portable devices (LB Series): Power over Micro-USB Type B
Power Requirements30–5 Vdc output: 9-28 Vdc, 40 mA 0–10 Vdc output: 12-28 Vdc, 40 mA 4–20 mA output: 12-28 Vdc, 80mA Portable devices (LB Series): 5 Vdc, 1 A recommended via an outlet adapter to USB
Battery Life (LB Series)Monochrome LCD: 14-18 hours (backlight dependent) Color TFT: 8 hours
Digital Data Update Rate340 Hz at 19200 baud
Analog Data Update Rate31 kHz
Monochrome LCD or Color TFT Display with Integrated TouchpadSimultaneously displays flow, temperature, and pressure
Display Update Rate10 Hz
Analog Signal Accuracy±0.1% of full scale additional uncertainty

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