Sensirion SFM4100 digital flow meter for non-aggressive gases in ventilation therapy

Equipped with a digital I2C interface, fully calibrated and with an impressively wide dynamic measuring range, the SFM4100 digital flow meter can be set up and calibrated for several different gases in parallel with the aid of the ‘Multigas’ function.

Sensirion’s CMOSens technology in the SFM4100 allows for self-test features for testing of the entire signal chain, from capture of the analogue signal through to amplification and A/D conversion, linearization and temperature compensation, while the sensor is in use. The sensor unit uses thermal measuring principles to achieve precise, rapid and reliable measurement of gas flow and the key component is the 3x5 mm sensor chip, which houses both the sensor element and the entire analysis electronics.

Other applications for the SFM4100 digital flow meter from Sensirion, besides mixing gaseous carriers for anaesthesia, include integration into other medical and analytical equipment and for tasks in process automation.