There are numerous benefits associated with this thermal mass flow measuring system. In addition to the direct gas mass flow measurement possibility, temperature will be provided as an output, while the operating concept is a modular one and will result in high efficiency. Next, the software allows the user to select up to 20 pure and mixed gases, with a maximum of eight components. Note that the device can also be programmed for rectangular ducting installations and circular pipes, and users have the option to calibrate it with flow conditioner. Optionally, they can add a cold tap device for easy removal of non-toxic gases and low pressure applications.