The archived article describes thermal gas mass flow controllers that combine electronic signal processing with a regulating valve. Their design can provide stable flow regulation, supported communication interfaces, and application-specific input/output options.
Some configurations support changes to operating functions or the displayed range without removing the instrument from the system. The actual adjustment capability depends on the model and firmware. A software or display-range change does not necessarily change the physical sensor/valve range or remove a recalibration requirement; confirm the permitted settings before relying on them.
These features can simplify operation and reduce avoidable removal work when they are included in the supplied configuration. Choose the actual calibrated range, signal interface and control mode for the process rather than assuming every thermal MFC has the same functions.

Flowmethod designs, develops, manufactures and supports gas mass flow controllers, meters and custom gas-control and mixing systems. Configurations are matched to the customer's process and operating requirements.
For selection, installation or technical enquiries, contact Flowmethod: Mr. Dou, +86 180 3818 3381; doufeijin@hotmail.com. See Contact for the full contact list.
