SFM3003-300-CET

Versatile digital flow and temperature sensor, -150 to +300 slm

The SFM3003 mass flow meter is Sensirion’s next-generation flow meter. Technically it is based on the SFM3019 meter that was brought onto the market during the Covid-19 pandemic to provide high volumes of flow meters for inspiratory flow measurements in medical ventilators. Compared to the SFM3019, the SFM3003 comes with a wider flow range as well as improved specifications. The flow of air, oxygen and mixtures thereof at rates between -30 and 300 slm is measured with excellent accuracy, reliability and long-term stability, and no recalibration is needed. The SFM3003 outputs an easily integrable digital I2C interface. The signal is internally linearized and temperature compensated. Furthermore, the SFM3003 flow meter has a very low pressure drop, ultra-fast response time and optimal signal-to-noise ratio. As part of the SFM3xxx platform, the SFM3003 is a versatile sensor solution for many different high-volume applications in which cost efficiency is the priority. The outstanding performance of the SFM3003 sensor is based on Sensirion’s patented CMOSens® Technology, which combines the sensor element, signal processing and digital calibration on a tiny microchip. The gas is measured by a thermal sensor element to provide an extended dynamic range and enhanced long-term stability compared to other flow-measuring technologies. Thanks to this proven CMOSens® Technology, the flow meter is perfectly suited for high-quality mass production and is the ideal choice for demanding and cost-sensitive OEM applications.

Specification

Gas flow
Full scale flow rate
-150 - 300
-150 - 300slm
Typical accuracy
±2.5% m.v.
±2.5% m.v.
Calibration
Air and O₂ and mixtures of air/O₂
Air and O₂ and mixtures of air/O₂
Sensor output
Flow and T
Flow and T
Maximum operating pressure
1.3
1.3bar
Fluidic connector ports
Medical cone (22 mm)
Medical cone (22 mm)
Generic
Supply voltage
2.7 - 5.5
2.7 - 5.5V
Average supply current
3800
3800uA
Max. supply current
5500
5500uA
Interfaces
I²C
I²C
Size (LxWxH)
82 x 35 x 32
82 x 35 x 32mm

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