Low-pressure-drop digital flow meter

19 June 2012

Swiss sensor manufacturer Sensirion is launching the new digital SFM3000 mass flow meter

Swiss sensor manufacturer Sensirion is launching the new digital SFM3000 mass flow meter.

It has been designed for high-volume applications in medical devices, process automation and burner control. The flow channel is designed to achieve a very low-pressure drop of less than 3mbar through the sensor element. The flow meter bi-directionally measures the flow of air and other non-aggressive gases at rates up to 200slm with high accuracy and very high speed. It outputs a 14-bit digital signal at a 2kHz update rate. The signal is internally linearised and temperature compensated. Furthermore, the new mass flow meter operates from a 5V DC supply voltage and features a digital 2-wire interface, making it easy to connect directly to a microcontroller.

The performance of the SFM3000 gas flow sensor is based on Sensirion’s patented CMOSens Technology, which combines the sensor element, signal processing and digital calibration on a tiny microchip. Gas flow 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 the proven CMOSens technology, the flow meter is suited for high-quality mass production and is the ideal choice for demanding and cost-sensitive OEM applications in medical ventilation and anaesthesia, as well as process automation and burner control.
Datasheet (preliminary): http://www.sensirion.com/file/datasheet_sfm3000
Website: http://www.sensirion.com/en/sfm3000 

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