Sensirion mass flow controllers in stock at Mouser

7th July 2021
Mick Elliott

The SFC5500 digital multi-gas mass flow controllers from Sensirion are now being shipped by distributor Mouser Electronics.

These controllers are CMOSens-based devices that measure gas mass flow by the calorimetric principle based on heat transfer.

Sensirion says that they achieve unmatched ratings for speed, accuracy, and repeatability at a very attractive system cost.

A heater element on a thermally insulated membrane and two thermopiles located upstream and downstream are integrated on a single silicon chip.

In the presence of gas flow, the temperature distribution up and downstream is disturbed. This asymmetry is then measured.

A larger channel design makes the device more robust against particles, clogging, and humidified gases.

Due to the compact single-chip design and mounting between metal parts, CMOSens-based sensors are also very resistant to electromagnetic disturbances (EMC).

Applications for the controllers include analytical instruments, bioreactors, medical equipment, process control, and industrial automation. 

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