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SFM3505-70-CO2
Next generation compact flow sensor calibrated for CO2 flow measurements
The SFM3505-70-CO2 features a completely re-engineered architecture and delivers best-in-class performance, offering ultra-low noise and high accuracy in a compact form factor. Its on-chip temperature compensator ensures precise measurements under varying conditions. The sensor’s minimal pressure drop across its full dynamic range maximises flexibility during integration into complex systems. The sensor offers a large CO2 flow range to enable fast CO2 gas delivery in applications such as insufflators and robotic surgery.
The SFM3505 is based on Sensirion’s latest 5th-generation CMOSens® Technology, which integrates the sensor element and advanced signal processing on a single microchip. This provides a fast, stable, and fully calibrated digital output via a standard I²C interface, ensuring long-term reliability and robust operation over the entire lifetime of the sensor.
Specification
| Gas flow | |||
|---|---|---|---|
| Full scale flow rate-30 - 70slm | -30 - 70 | slm | |
| Typical accuracyTotal VOC in ppb, CO2-eq in ppm | Total VOC in ppb, CO2-eq in ppm | ||
| CalibrationCO₂ | CO₂ | ||
| Sensor outputFlow | Flow | ||
| Maximum operating pressure1.65bar | 1.65 | bar | |
| Fluidic connector portsO-Ring | O-Ring |
| Generic | |||
|---|---|---|---|
| Supply voltage3.2 - 3.4V | 3.2 - 3.4 | V | |
| Max. supply current10mA | 10 | mA | |
| Size (LxWxH)57.5 x 27.5 x 29.4mm | 57.5 x 27.5 x 29.4 | mm |
Downloads
Sensor evaluation
Buy the following products to evaluate this sensor
| Name | Description | Series | Category |
|---|---|---|---|
 SEK-SFM3505 | Gas flow sensor evaluation kit SFM3505 | SFM3xxx | Gas flow sensors |
Download the respective viewer software to start measuring
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