LG01-2000Axxx Liquid Flow Switch and Bubble Detector ■ Dtection of low liquid flow in the ml-Range ■ Totally non invasive ■ Ultra fast response time of 100 ms 1 Introduction LG01 The LG01 Liquid Flow Switch enables detection of flow of liquid in the range of ml/min. The output signal is 5V when the flow rate is higher than the specified Flow Switch Limit and 0V below this limit or when air or bubbles are found inside the sensors flow channel instead of liquid. Excellent chemical resistance and bio-compatibility are ensured: The flow path of the LG01 Liquid Flow Switch is formed by a simple, straight glass capillary. 2 Sensing Performance Table 1: Model specific performance of LG01-2000Axxx (all data for medium H2O, 20°C, 1 barabs unless otherwise noted) Parameter LG01-2000A090 LG01-2000A005 Maximum Flow Rate 50 220 ml/min Flow Switch Limit 4.5 0.25 ml/min Accuracya of Switching Point ±10 ±10 % Switching Hysteresis ±5 ±5 % Mounting Orientation Sensitivityb +2 +14 % Flow Detection Response Time 50 ms Response Time On Power-Up 120 ms Operating Temperature +10...+50 °C Ambient storage temperature -10...+60 °C 2.1 Operation with other Liquids than Water Due to the measurement principle the LG01 flow switch characteristics is changing with the thermal properties of the liquid. For aqueous solutions the data above is a good approximation. For hydrocarbon liquids such as oil, fuel, solvents and so on the Flow Switch Limit is increased by the factors below. Table 2: Increase of Flow Switch Level for LG01-2000Axxx using hydrocarbon liquids Parameter LG01-2000A090 LG01-2000A005 Approximate Multiplication Factor for Flow Switch Limit 2 5.5 A Maximum Flow Rate of 250 ml/min and more is possible with hydrocarbon liquids for all LG01-2000Axxx models. a Better available on request. b Shift of switching point if not mounted in normal position (which is horizontal flow channel) but with vertical flow channel. www.sensirion.com May_ 2011 _ V1.3 1/4

LG01 Liquid Flow Switch 3 Electrical and Mechanical Spcifications 3.1 Electrical Spcifications An electrical voltage output indicates flow above (5 V) or below (0 V) the Flow Switch Limit and/or air or bubbles inside the sensors flow channel. The product comes fully calibrated for water - for volume applications flow calibration for other media is available on request- Table 3: DC Characteristics. Parameter Conditions Min. Typ. Max. Units Power Supply DC, VDD 5 7 12a V Operating Current Vdd = 9 V, no load 6.8 mA Voltage Output High Flow>Flow Switch Limit and no air 5 V Voltage Output Low Flow<Flow...

LG01 Liquid Flow Switch 4 Physical Dimensions 5 Connectivity Kit The optional LG01 connectivity kit contains material for electrical and fluidic connections. ■ Assembled flat ribbon cable, 30 mm (1-100482-01) ■ 2x barb adapter to connect ID 1.6 mm (1/16") tubing (Value Plastics ABR004-J1A-2) ■ 2x barb adapter to connect ID 3.2 mm (1/8") tubing (Value Plastics ABR013-J1A-1) 6 Ordering Information The LG01 flow sensors can be ordered for OEM volume applications. Product Article Number LG01-2000A090 1-100796-01 LG01-2000A005 1-100797-01 LG01 Connectivity Kit 1-100814-01 7 Important Notices 7.1 Warning,...

LG01 Liquid Flow Switch IEN5IRION SENSOR COMPANY SENSIRION's faulty design, material, or workmanship; the dtective product shall be returned to SENSIRION's factory at the Buyer's expense; and the warranty period for any repaired or replaced product shall be limited to the unexpired portion of the original period. This warranty does not apply to any equipment which has not been installed and used within the specifications recommended by SENSIRION for the intended and proper use of the equipment. EXCEPT FOR THE WARRANTES EXPRESSLY SET FORTH HEREIN, SENSIRION MAKES NO WARRANTIES, EITHER EXPRESS...