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Back to catalog
New

SFM3304-D

Proximal single-use gas flow sensor in single packaging

The single-use SFM3304-D gas flow sensor is designed to be used in close proximity to patients. It accurately monitors both inspiratory and expiratory flows up to ±250slm with a bidirectional measurement and has an integrated heater that prevents condensation, allowing it to function in extremely humid conditions. It is robust and cost-effective and can easily be connected to respiratory breathing tubes due to its medical cones and clip-on electrical connection, while adding minimal dead space (<10mL). The SFM3304-D is individually packaged for protection and ease of use. The label on the individual packaging can be customized upon request, while a standard version is available for distribution.

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  • SFM3304-D

Specification

Gas flow
Full scale flow rate-250 - 250slm-250 - 250slm
Typical accuracy±3% m.v.±3% m.v.
Sensor outputAir, N2, O2, non-agressive gases and non-condensingAir, N2, O2, non-agressive gases and non-condensing
Maximum operating pressure1.14bar1.14bar
Fluidic connector portsMedical cone (22 mm)Medical cone (22 mm)
Generic
Supply voltage3.15 - 3.45V3.15 - 3.45V
InterfacesI²CI²C
Size (LxWxH)69.3 x 25.3 x 22mm69.3 x 25.3 x 22mm

Downloads

Datasheet SFM3304-xxx-D
  • 09/2025•
  • PDF•
  • 816.2 KB
DatasheetDownload Datasheet SFM3304-xxx-D09/2025Download Datasheet SFM3304-xxx-DPDFDownload Datasheet SFM3304-xxx-D816.2 KBDownload Datasheet SFM3304-xxx-D
Selection guide gas flow sensors
  • 12/2025•
  • PDF•
  • 563.3 KB
Application noteDownload Selection guide gas flow sensors12/2025Download Selection guide gas flow sensorsPDFDownload Selection guide gas flow sensors563.3 KBDownload Selection guide gas flow sensors
Arduino driver SFM3304
  • 02/2025•
  • Link•
SoftwareDownload Arduino driver SFM330402/2025Download Arduino driver SFM3304LinkDownload Arduino driver SFM3304Download Arduino driver SFM3304
Embedded driver SFM3304
  • 02/2025•
  • Link•
SoftwareDownload Embedded driver SFM330402/2025Download Embedded driver SFM3304LinkDownload Embedded driver SFM3304Download Embedded driver SFM3304
Python driver SFM3304
  • 02/2025•
  • Link•
SoftwareDownload Python driver SFM330402/2025Download Python driver SFM3304LinkDownload Python driver SFM3304Download Python driver SFM3304
Raspberry Pi driver SFM3304
  • 02/2025•
  • Link•
SoftwareDownload Raspberry Pi driver SFM330402/2025Download Raspberry Pi driver SFM3304LinkDownload Raspberry Pi driver SFM3304Download Raspberry Pi driver SFM3304
Sensirion_calibration_certification_gas_flow_sensors
  • PDF•
  • 114.2 KB
CertificateDownload Sensirion_calibration_certification_gas_flow_sensorsDownload Sensirion_calibration_certification_gas_flow_sensorsPDFDownload Sensirion_calibration_certification_gas_flow_sensors114.2 KBDownload Sensirion_calibration_certification_gas_flow_sensors
Product flyer SFM3304-D
  • 10/2023•
  • PDF•
  • 727.0 KB
FlyerDownload Product flyer SFM3304-D10/2023Download Product flyer SFM3304-DPDFDownload Product flyer SFM3304-D727.0 KBDownload Product flyer SFM3304-D
Clip-on cap/cable evaluation kit
  • 08/2026•
  • PDF•
  • 523.4 KB
Application noteDownload Clip-on cap/cable evaluation kit08/2026Download Clip-on cap/cable evaluation kitPDFDownload Clip-on cap/cable evaluation kit523.4 KBDownload Clip-on cap/cable evaluation kit
High humidity applications
  • 01/2021•
  • PDF•
  • 342.0 KB
Application noteDownload High humidity applications01/2021Download High humidity applicationsPDFDownload High humidity applications342.0 KBDownload High humidity applications
Reference and flow conversions
  • 09/2021•
  • PDF•
  • 293.7 KB
Application noteDownload Reference and flow conversions09/2021Download Reference and flow conversionsPDFDownload Reference and flow conversions293.7 KBDownload Reference and flow conversions
SEK-ControlCenter (all devices)
  • Link•
SoftwareDownload SEK-ControlCenter (all devices)Download SEK-ControlCenter (all devices)LinkDownload SEK-ControlCenter (all devices)Download SEK-ControlCenter (all devices)
STEP file SFM cap for AW/D type sensors
  • STEP•
  • 4.6 MB
Drawings/CADDownload STEP file SFM cap for AW/D type sensorsDownload STEP file SFM cap for AW/D type sensorsSTEPDownload STEP file SFM cap for AW/D type sensors4.6 MBDownload STEP file SFM cap for AW/D type sensors
REACH and RoHS declaration SFM/SGM
  • 04/2026•
  • PDF•
  • 104.6 KB
CertificateDownload REACH and RoHS declaration SFM/SGM04/2026Download REACH and RoHS declaration SFM/SGMPDFDownload REACH and RoHS declaration SFM/SGM104.6 KBDownload REACH and RoHS declaration SFM/SGM
Gas flow sensors brochure
  • 10/2025•
  • PDF•
  • 497.6 KB
FlyerDownload Gas flow sensors brochure10/2025Download Gas flow sensors brochurePDFDownload Gas flow sensors brochure497.6 KBDownload Gas flow sensors brochure
  • All products
  • •Gas flow sensors
  • •SFM3xxx-AW/D

Sensor evaluation

Buy the following products to evaluate this sensor

NameDescriptionSeriesCategory
SEK-SFM3xxx-AW/D Evaluation Kit (Gen. 2)Gas flow sensors evaluation kit SFM3xxx-AW/DSEK-SFMxxxxGas flow sensors

SEK-SFM3xxx-AW/D Evaluation Kit (Gen. 2)

Gas flow sensors evaluation kit SFM3xxx-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

Applications for this product

Mechanical ventilators

Precise and safe patient ventilation using ventilator flow sensors

Learn more

Anesthesia flow sensor

Unlock precise gas mixing at minimal flows with ultra-accurate anesthesia low flow sensors

Learn more

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