Specification

Gas flow
Full scale flow rate
±33
±33 slm
Typical accuracy
±3% m.v.
±3% m.v.
Calibration
AIR and O₂
AIR and O₂
Sensor output
Flow and T
Flow and T
Maximum operating pressure
1.1
1.1 bar
Fluidic connector ports
Medical cone (22 mm)
Medical cone (22 mm)
Generic
Supply voltage
4.75 - 5.6
4.75 - 5.6 V
Max. supply current
10000
10000 uA
Interfaces
I²C
I²C
Size (LxWxH)
60 x 22 x 21
60 x 22 x 21 mm³

Technical downloads

Name Type Date File Size
Datasheet SFM3400

01/2024

File

366.0 KB

Datasheet 01/2024 PDF 366.0 KB
Sample code SFM3000

10/2021

File

261.6 KB

Software 10/2021 ZIP 261.6 KB
STEP file SFM3400-AW

10/2021

File

4.2 MB

CAD 10/2021 STEP 4.2 MB
Product flyer SFM proximal flow sensors

04/2017

File

667.7 KB

Flyer 04/2017 PDF 667.7 KB
SEK-ControlCenter (all devices)

10/2021

Link

-

Viewer software 10/2021 Link -
Cleaning methods SFM3x00-AW

01/2021

File

188.0 KB

Application note 01/2021 PDF 188.0 KB
Clip-on cap/cable evaluation kit

09/2021

File

483.3 KB

Application note 09/2021 PDF 483.3 KB
Connector Interface for SFM3x00-AW and SFM3x00-D Flow Sensors

12/2017

File

483.3 KB

Application note 12/2017 PDF 483.3 KB
High humidity applications

01/2021

File

342.0 KB

Application note 01/2021 PDF 342.0 KB
Reference and flow conversions

09/2021

File

293.7 KB

Application note 09/2021 PDF 293.7 KB
SFM3xxx I²C Functional Description

05/2022

File

306.1 KB

Application note 05/2022 PDF 306.1 KB
STEP file SFM cap for AW/D type sensors

10/2021

File

4.6 MB

CAD 10/2021 STEP 4.6 MB
REACH and RoHS declaration SFM/SGM

02/2024

File

88.9 KB

Certificate 02/2024 PDF 88.9 KB
Mass flow controllers brochure chinese

02/2024

File

606.2 KB

Flyer 02/2024 PDF 606.2 KB
Overview of Sensirion gas flow meters

01/2024

File

1013.9 KB

Flyer 01/2024 PDF 1013.9 KB

Sensor evaluation

Buy the following products to evaluate this sensor

Name Description Series Category
SEK-SFM3XXX-AW/D EVALUATION KIT
Gas flow sensors evaluation kit SFM3x00-AW-D SEK-SFMxxxx Gas 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

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.