RS Components
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Sensirion Liquid Flow Switch Flow Meter, 250 (Isopropyl Alcohol) → 220 (Water) ml/min, 250 (Isopropyl Alcohol) ml/min

This image is representative of the product range

On back order for despatch 15/01/2021, delivery within 7 working days from despatch date.
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Price (ex. GST) Each (In a Tray of 25)


(exc. GST)


(inc. GST)



RS Stock No.:
Mfr. Part No.:
COO (Country of Origin):
unitsPer unitPer Tray*
25 +$236.05$5,901.25
*price indicative

LG01-2000A Liquid Flow Switch & Bubble Detectors

The LG01-2000A family of liquid flow switches from Sensirion are able to detect liquid flow by millilitres per minute (ml/min). It also provides bubble detection.
When the flow rate is more than the desired flow switch point, the output signal is 5 V. If the flow rate is lower than this point the output signal is 0 V. This is also the case for when air/bubbles are sensed within the sensor’s flow channel.
This non-invasive liquid flow switch has a straight glass capillary flow path. This also enables chemical resistance and bio-compatibility.
An additional Connectivity Kit can be purchased separately for the LG01 liquid flow switches.

Features of the LG01 liquid flow switches:
Flow switch & bubble detector
Fast response time (100 ms)
Operating temperature: +10 to +50 °C

LG01-2000A090 switching point: 4.5 ml/min
LG01-2000A005 switching point: 0.25 ml/min

Part numbers:
8986738 - LG01-2000A005 / 1-100797-01
8986731 - LG01-2000A090 / 1-100796-01

Sensirion Liquid Flow Switches

Media MonitoredLiquid
Device TypeLiquid Flow Switch
Minimum Flow Rate250 (Isopropyl Alcohol)
Maximum Flow Rate220 (Water) ml/min, 250 (Isopropyl Alcohol) ml/min
Supply Voltage5 → 12 V
Pipe Diameter Range9.2 mm
Connection Type5 Pin PCB Header
Maximum Pressure3bar
MaterialBorosilicate Glass (Tube Material), FEP (Sealing), PEEk (Fitting)
Minimum Operating Temperature+10°C
Maximum Operating Temperature+50°C
Current Rating6.8 mA