SFM3505
UpcomingNext generation compact flow sensor family available in two performance levels
The SFM3505 is our next-generation compact digital flow meter, succeeding the proven SFM3119 and SFM3100. Featuring a completely re-engineered architecture, the SFM3505 delivers best-in-class performance with ultra-low noise and high accuracy across an extended flow range from –150 to +300 slm. The sensor is offered in two performance tiers, SFM3505-300 with standard and SFM3505-300-X with high accuracy.
Built on Sensirion’s latest 5th-generation CMOSens® Technology, the SFM3505 integrates the sensor element and advanced signal processing on a single microchip. This enables fast, stable, and fully calibrated digital output via a standard I²C interface, ensuring long-term reliability and robust operation over the sensor’s lifetime.
It is calibrated for air and oxygen and incorporates on-chip temperature compensation, ensuring precise measurements under varying conditions. Its optimized flow channel design enables minimal pressure drop across the full dynamic range, making it ideal for inspiratory flow measurements in applications such as mechanical ventilation, anesthesia, and gas mixing systems.
Specification
| Gas flow | |||
|---|---|---|---|
| Full scale flow rate -150 - 300 | -150 - 300 | slm | |
| Typical accuracy SFM3505-300: 2.3% m.v. SFM3505-300-X: 1.5% m.v. | SFM3505-300: 2.3% m.v. SFM3505-300-X: 1.5% m.v. | ||
| Calibration Air and O₂ | Air and O₂ | ||
| Sensor output Flow | Flow | ||
| Maximum operating pressure 1.65 | 1.65 | bar | |
| Fluidic connector ports O-Ring | O-Ring |
| Generic | |||
|---|---|---|---|
| Supply voltage 3.2 - 3.4 | 3.2 - 3.4 | V | |
| Max. supply current 10 | 10 | mA | |
| Interfaces I²C | I²C | ||
| Size (LxWxH) 57.5 x 27.5 x 29.4 | 57.5 x 27.5 x 29.4 | mm |
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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.
