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  • All products
  • Liquid flow sensors
  • SLF3x

SLF3S-4000B

Liquid flow sensing on a new level: flow rates up to 600 ml/min

With the new SLF3S-4000B high-flow sensor, Sensirion is moving into a new measurement dimension and now covers an extended measurement range from nanoliters to liters per minute. With the same look and feel as the existing SLF3x flow sensor family, the SLF3S-4000B offers several advantages. Users can continue to use existing cables or software for readout without customization, thus eliminating reprogramming processes. The complete liquid flow sensor portfolio benefits users who want to source their sensor technology from one specialist in automation solutions and fluid systems.

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Specification

Liquid flow
Full scale flow rate (H2O)
600
600ml/min
Accuracy (H2O)
5
5%
Repeatability (H2O)
0.5
0.5%
Full scale flow rate (IPA)
600
600ml/min
Accuracy (IPA)
10
10%
Repeatability (IPA)
0.5
0.5%
Maximum operating pressure
3
3bar
Fluidic connector ports
Barbed fittings
Barbed fittings
Generic
Supply voltage
3.2 - 3.8
3.2 - 3.8V
Max. supply current
6
6mA
Interfaces
I²C, RS485
I²C, RS485
Size (LxWxH)
48 x 15.5 x 8.6
48 x 15.5 x 8.6mm

Downloads

Datasheet SLF3S-4000B
  • 11/2022•
  • PDF•
  • 1.0 MB
Datasheet11/2022PDF1.0 MB
Auto heater management in dispensing applications SLF3x
  • 10/2022•
  • PDF•
  • 414.8 KB
Application note10/2022PDF414.8 KB
Auto heater management SLF3x
  • 10/2022•
  • XLSX•
  • 31.0 KB
Application note10/2022XLSX31.0 KB
Chemical resistance
  • 07/2020•
  • PDF•
  • 134.7 KB
Application note07/2020PDF134.7 KB
I2C address change SLF3x
  • 04/2024•
  • PDF•
  • 190.0 KB
Application note04/2024PDF190.0 KB
Sensor fluidic ports and tubing connections
  • 01/2024•
  • PDF•
  • 531.4 KB
Application note01/2024PDF531.4 KB
STEP file SLF3S-4000B
  • 05/2022•
  • STEP•
  • 3.4 MB
Drawings/CAD05/2022STEP3.4 MB
Engineering Guidelines of the SLF3x Series
  • 01/2024•
  • PDF•
  • 340.6 KB
Application note01/2024PDF340.6 KB
Formation, prevention and removal of biofilms
  • 07/2020•
  • PDF•
  • 294.8 KB
Application note07/2020PDF294.8 KB
Operating guidelines for liquid flow meter kits (SLF3x and LD20)
  • 06/2019•
  • PDF•
  • 552.3 KB
Application note06/2019PDF552.3 KB
Selection guide liquid flow sensors
  • 08/2020•
  • PDF•
  • 281.9 KB
Application note08/2020PDF281.9 KB
Arduino driver liquid flow
  • Link•
SoftwareLink
STEP File SLF3x Clamp
  • 05/2023•
  • STEP•
  • 2.3 MB
Drawings/CAD05/2023STEP2.3 MB
Calibration certification SLF3x
  • 11/2022•
  • PDF•
  • 154.2 KB
Certificate11/2022PDF154.2 KB
REACH and RoHS declaration Liquid Flow Meters
  • 04/2026•
  • PDF•
  • 102.7 KB
Certificate04/2026PDF102.7 KB
REACH and RoHS declaration SLF
  • 04/2026•
  • PDF•
  • 102.7 KB
Certificate04/2026PDF102.7 KB

Sensor evaluation

Buy the following products to evaluate this sensor

NameDescriptionSeriesCategory
EK-SLF3S-4000BLiquid flow evaluation kit SLF3S-4000BSLF3xLiquid flow sensors

EK-SLF3S-4000B

Liquid flow evaluation kit SLF3S-4000B

SLF3x

Liquid flow sensors

Download the respective viewer software to start measuring

Go to download center

Start testing our sensors fast and easy with the evaluation kits

How to get started

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Smart sensors for your application

Sensirion's sensor solutions are used in a wide range of applications and markets. Our reliable environmental and flow sensors improve energy efficiency, increase health and ensure safety and comfort.

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SLF3S-4000B

SLF3S-4000B Liquid Flow Sensor

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Global Distributors

Part numberQuantityDistributor nameCountryUploaded
SLF3S-4000B LIQUID FLOW SENSOR194DigiKeyDE, US, HK20.04.2026Buy
SLF3S-4000B LIQUID FLOW SENSOR96Mouser Electronics Inc.27 countries20.04.2026Buy