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  • All products
  • Gas flow sensors
  • SFM3xxx-AW/D

SFM3304-D

New

Proximal single-use gas flow sensor in single packaging for OEM

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 an OEM product: it is individually packaged with a customer-specific label, that allows direct end-customer delivery. For a proximal sensor available in catalog distribution, please see the SFM3300-D.

Contact sales

Specification

Gas flow
Full scale flow rate
-250 - 250
-250 - 250slm
Typical accuracy
±3% m.v.
±3% m.v.
Sensor output
Air, N2, O2, non-agressive gases and non-condensing
Air, N2, O2, non-agressive gases and non-condensing
Maximum operating pressure
1.14
1.14bar
Fluidic connector ports
Medical cone (22 mm)
Medical cone (22 mm)
Generic
Supply voltage
3.15 - 3.45
3.15 - 3.45V
Interfaces
I²C
I²C
Size (LxWxH)
69.3 x 25.3 x 22
69.3 x 25.3 x 22mm

Downloads

Datasheet SFM3304-xxx-D

09/2025

File

816.2 KB

Datasheet09/2025PDF816.2 KB
Cleaning methods SFM3x00-AW

01/2021

File

188.0 KB

Application note01/2021PDF188.0 KB
Selection guide gas flow sensors

06/2025

File

449.9 KB

Application note06/2025PDF449.9 KB
Arduino driver SFM3304

02/2025

Link

Software02/2025Link
Embedded driver SFM3304

02/2025

Link

Software02/2025Link
Python driver SFM3304

02/2025

Link

Software02/2025Link
Raspberry Pi driver SFM3304

02/2025

Link

Software02/2025Link
Product flyer SFM3304-D

10/2023

File

307.5 KB

Flyer10/2023PDF307.5 KB
Clip-on cap/cable evaluation kit

02/2025

File

498.6 KB

Application note02/2025PDF498.6 KB
High humidity applications

01/2021

File

342.0 KB

Application note01/2021PDF342.0 KB
Reference and flow conversions

09/2021

File

293.7 KB

Application note09/2021PDF293.7 KB
SEK-ControlCenter (all devices)

Link

SoftwareLink
STEP file SFM cap for AW/D type sensors

File

4.6 MB

Drawings/CADSTEP4.6 MB
REACH and RoHS declaration SFM/SGM

01/2025

File

122.8 KB

Certificate01/2025PDF122.8 KB
Gas flow sensors brochure

01/2024

File

497.6 KB

Flyer01/2024PDF497.6 KB

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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