Azbil Corporation’s digital mass flow controller Model F4Q features high-speed response and high accuracy, providing at-a-glance understanding of control status. The F4Q’s large LED indicator allows users to immediately know the control status while the detailed LCD enables quick yet comprehensive understanding of the control status. Digital mass flow controllers use a built-in sensor and valve to control gas flow rates. Various data can be instantly checked on-site with the detailed display that shows a large amount of information, and the control status can be quickly understood by the color and state of the large LED indicator.